perf(search): 为浏览路径补部分复合索引 (0012)

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Merge pull request '新增联系我们页面' (#25 ) from devin/1782277231-contact-us into main
2026-06-24 05:33:31 +00:00 · 2026-06-24 13:02:07 +08:00 · 2026-06-24 05:00:31 +00:00 · 2026-06-24 12:46:03 +08:00 · 2026-06-24 04:44:05 +00:00 · 2026-06-24 12:36:17 +08:00
134 changed files with 19707 additions and 87 deletions
@@ -0,0 +1,14 @@
+.git
+**/node_modules
+admin-frontend/dist
+public-frontend/dist
+api/server
+*.test
+*.out
+__pycache__
+.venv
+.pytest_cache
+.ruff_cache
+.env
+.env.*
+!.env.example
@@ -5,3 +5,8 @@ POSTGRES_PASSWORD=change-me
 POSTGRES_DB=opengoods
 MINIO_ROOT_USER=opengoods
 MINIO_ROOT_PASSWORD=change-me
+
+# Admin console (served at /ping). Set a strong password and a random JWT secret.
+GOODS_ADMIN_USER=admin
+GOODS_ADMIN_PASSWORD=change-me
+GOODS_ADMIN_JWT_SECRET=change-me-to-a-long-random-string
@@ -18,6 +18,15 @@ dist/
 .env.*
 !.env.example

+# Node / admin frontend
+node_modules/
+
+# Keep the embedded SPA placeholders (real builds are injected during Docker build)
+!api/internal/adminweb/dist/
+!api/internal/adminweb/dist/index.html
+!api/internal/publicweb/dist/
+!api/internal/publicweb/dist/index.html
+
 # OS / editors
 .DS_Store
 *.swp
@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="zh">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>天工商品档案公共仓 · 管理后台</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
@@ -0,0 +1,26 @@
+{
+  "name": "opengoods-admin-frontend",
+  "private": true,
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "lucide-react": "^0.344.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.2.55",
+    "@types/react-dom": "^18.2.19",
+    "@vitejs/plugin-react": "^4.2.1",
+    "autoprefixer": "^10.4.17",
+    "postcss": "^8.4.35",
+    "tailwindcss": "^3.4.1",
+    "typescript": "^5.3.3",
+    "vite": "^5.1.0"
+  }
+}
@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
@@ -0,0 +1,211 @@
+import { useEffect, useState } from "react";
+import { api, clearToken, getToken } from "./api";
+import Login from "./components/Login";
+import ProductList from "./components/ProductList";
+import ProductDetail from "./components/ProductDetail";
+import SubmissionsPage from "./components/SubmissionsPage";
+import ApiKeysPage from "./components/ApiKeysPage";
+import CategoriesPage from "./components/CategoriesPage";
+import BrandsPage from "./components/BrandsPage";
+import StatsPage from "./components/StatsPage";
+import AuditLogPage from "./components/AuditLogPage";
+import { BarChart3, FolderTree, Inbox, KeyRound, LogOut, Package, ScrollText, Tag } from "lucide-react";
+
+type Tab =
+  | "overview"
+  | "products"
+  | "submissions"
+  | "categories"
+  | "brands"
+  | "audit"
+  | "keys";
+type View = { name: "list" } | { name: "detail"; id: string };
+
+export default function App() {
+  const [authed, setAuthed] = useState(false);
+  const [checking, setChecking] = useState(true);
+  const [username, setUsername] = useState("");
+  const [tab, setTab] = useState<Tab>("products");
+  const [pending, setPending] = useState<number | null>(null);
+  const [view, setView] = useState<View>({ name: "list" });
+  const [navIds, setNavIds] = useState<string[]>([]);
+
+  useEffect(() => {
+    if (!authed) return;
+    api
+      .listSubmissions("pending", 1, 1)
+      .then((r) => setPending(r.pending))
+      .catch(() => undefined);
+  }, [authed]);
+
+  useEffect(() => {
+    if (!getToken()) {
+      setChecking(false);
+      return;
+    }
+    api
+      .me()
+      .then((r) => {
+        setUsername(r.username);
+        setAuthed(true);
+      })
+      .catch(() => clearToken())
+      .finally(() => setChecking(false));
+  }, []);
+
+  function onLoggedIn(name: string) {
+    setUsername(name);
+    setAuthed(true);
+    setView({ name: "list" });
+  }
+
+  function logout() {
+    clearToken();
+    setAuthed(false);
+    setUsername("");
+  }
+
+  if (checking) {
+    return (
+      <div className="flex h-full items-center justify-center text-gray-500">
+        加载中…
+      </div>
+    );
+  }
+
+  if (!authed) return <Login onLoggedIn={onLoggedIn} />;
+
+  return (
+    <div className="flex h-full flex-col">
+      <header className="flex items-center justify-between bg-white px-6 py-3 shadow-sm">
+        <div className="flex items-center gap-6">
+          <div className="flex items-center gap-2 text-lg font-semibold text-gray-800">
+            <Package className="h-5 w-5 text-emerald-600" />
+            天工商品档案公共仓 · 后台
+          </div>
+          <nav className="flex items-center gap-1 text-sm">
+            <button
+              onClick={() => setTab("overview")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "overview"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <BarChart3 className="h-4 w-4" /> 数据概览
+            </button>
+            <button
+              onClick={() => {
+                setTab("products");
+                setView({ name: "list" });
+              }}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "products"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <Package className="h-4 w-4" /> 商品档案
+            </button>
+            <button
+              onClick={() => setTab("submissions")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "submissions"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <Inbox className="h-4 w-4" /> 待审核投稿
+              {pending != null && pending > 0 && (
+                <span className="ml-1 text-xs bg-amber-500 text-white rounded-full px-1.5">
+                  {pending}
+                </span>
+              )}
+            </button>
+            <button
+              onClick={() => {
+                setTab("categories");
+                setView({ name: "list" });
+              }}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "categories"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <FolderTree className="h-4 w-4" /> 分类管理
+            </button>
+            <button
+              onClick={() => setTab("brands")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "brands"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <Tag className="h-4 w-4" /> 品牌管理
+            </button>
+            <button
+              onClick={() => setTab("audit")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "audit"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <ScrollText className="h-4 w-4" /> 操作日志
+            </button>
+            <button
+              onClick={() => setTab("keys")}
+              className={`px-3 py-1.5 rounded-md flex items-center gap-1.5 ${
+                tab === "keys"
+                  ? "bg-emerald-50 text-emerald-700"
+                  : "text-gray-600 hover:bg-gray-100"
+              }`}
+            >
+              <KeyRound className="h-4 w-4" /> API 密钥
+            </button>
+          </nav>
+        </div>
+        <div className="flex items-center gap-4 text-sm text-gray-600">
+          <span>{username}</span>
+          <button
+            onClick={logout}
+            className="flex items-center gap-1 rounded px-2 py-1 text-gray-500 hover:bg-gray-100 hover:text-gray-800"
+          >
+            <LogOut className="h-4 w-4" /> 退出
+          </button>
+        </div>
+      </header>
+      <main className="flex-1 overflow-auto p-6">
+        {tab === "overview" ? (
+          <StatsPage />
+        ) : tab === "audit" ? (
+          <AuditLogPage />
+        ) : tab === "keys" ? (
+          <ApiKeysPage />
+        ) : tab === "categories" ? (
+          <CategoriesPage />
+        ) : tab === "brands" ? (
+          <BrandsPage />
+        ) : tab === "submissions" ? (
+          <SubmissionsPage onPending={setPending} />
+        ) : view.name === "list" ? (
+          <ProductList
+            onOpen={(id, ids) => {
+              setNavIds(ids);
+              setView({ name: "detail", id });
+            }}
+          />
+        ) : (
+          <ProductDetail
+            id={view.id}
+            ids={navIds}
+            onNavigate={(id) => setView({ name: "detail", id })}
+            onBack={() => setView({ name: "list" })}
+          />
+        )}
+      </main>
+    </div>
+  );
+}
@@ -0,0 +1,206 @@
+// API base derives from Vite's BASE_URL (/ping/) so it matches the nginx prefix.
+const API_BASE = `${import.meta.env.BASE_URL}api`;
+const TOKEN_KEY = "opengoods_admin_token";
+
+export function getToken(): string | null {
+  return localStorage.getItem(TOKEN_KEY);
+}
+
+export function setToken(token: string) {
+  localStorage.setItem(TOKEN_KEY, token);
+}
+
+export function clearToken() {
+  localStorage.removeItem(TOKEN_KEY);
+}
+
+export class ApiError extends Error {
+  status: number;
+  constructor(status: number, message: string) {
+    super(message);
+    this.status = status;
+  }
+}
+
+async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
+  const headers: Record<string, string> = {
+    "Content-Type": "application/json",
+    ...(options.headers as Record<string, string>),
+  };
+  const token = getToken();
+  if (token) headers.Authorization = `Bearer ${token}`;
+
+  const res = await fetch(`${API_BASE}${path}`, { ...options, headers });
+  if (res.status === 401) {
+    clearToken();
+    throw new ApiError(401, "登录已过期，请重新登录");
+  }
+  const text = await res.text();
+  const data = text ? JSON.parse(text) : null;
+  if (!res.ok) {
+    const msg = data?.error?.message || `请求失败 (${res.status})`;
+    throw new ApiError(res.status, msg);
+  }
+  return data as T;
+}
+
+export const api = {
+  login: (username: string, password: string) =>
+    request<{ token: string; username: string }>("/login", {
+      method: "POST",
+      body: JSON.stringify({ username, password }),
+    }),
+  me: () => request<{ username: string }>("/me"),
+  listProducts: (
+    q: string,
+    page: number,
+    size: number,
+    sort?: string,
+    order?: string,
+  ) =>
+    request<{
+      items: import("./types").ProductRow[];
+      page: number;
+      size: number;
+      total: number;
+      completeness_fields: string[];
+    }>(
+      `/products?q=${encodeURIComponent(q)}&page=${page}&size=${size}` +
+        (sort ? `&sort=${sort}&order=${order || "asc"}` : ""),
+    ),
+  getProduct: (id: string) =>
+    request<import("./types").ProductDetail>(`/products/${id}`),
+  createProduct: (body: unknown) =>
+    request<import("./types").ProductDetail>("/products", {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+  updateProduct: (id: string, body: unknown) =>
+    request<import("./types").ProductDetail>(`/products/${id}`, {
+      method: "PUT",
+      body: JSON.stringify(body),
+    }),
+  listAudit: (id: string) =>
+    request<{ items: import("./types").AuditEntry[] }>(`/products/${id}/audit`),
+  addImage: (id: string, url: string, kind: string) =>
+    request<import("./types").ProductImage>(`/products/${id}/images`, {
+      method: "POST",
+      body: JSON.stringify({ url, kind }),
+    }),
+  deleteImage: (id: string, imageId: string) =>
+    request<{ status: string }>(`/products/${id}/images/${imageId}`, {
+      method: "DELETE",
+    }),
+  addMsrp: (id: string, body: unknown) =>
+    request<import("./types").MSRP>(`/products/${id}/msrp`, {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+  deleteMsrp: (id: string, msrpId: string) =>
+    request<{ status: string }>(`/products/${id}/msrp/${msrpId}`, {
+      method: "DELETE",
+    }),
+  addBarcode: (id: string, body: unknown) =>
+    request<import("./types").Barcode>(`/products/${id}/barcodes`, {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+  deleteBarcode: (id: string, barcodeId: string) =>
+    request<{ status: string }>(`/products/${id}/barcodes/${barcodeId}`, {
+      method: "DELETE",
+    }),
+  setPrimaryBarcode: (id: string, barcodeId: string) =>
+    request<import("./types").Barcode>(
+      `/products/${id}/barcodes/${barcodeId}/primary`,
+      { method: "POST" },
+    ),
+  listBrands: () =>
+    request<{ items: import("./types").Brand[] }>("/brands"),
+  createBrand: (name: string) =>
+    request<import("./types").Brand>("/brands", {
+      method: "POST",
+      body: JSON.stringify({ name }),
+    }),
+  updateBrand: (id: string, name: string) =>
+    request<import("./types").Brand>(`/brands/${id}`, {
+      method: "PUT",
+      body: JSON.stringify({ name }),
+    }),
+  mergeBrands: (id: string, targetId: string) =>
+    request<import("./types").Brand>(`/brands/${id}/merge`, {
+      method: "POST",
+      body: JSON.stringify({ target_id: targetId }),
+    }),
+  deleteBrand: (id: string) =>
+    request<{ status: string }>(`/brands/${id}`, { method: "DELETE" }),
+  listKindFields: (kind: string) =>
+    request<{ items: import("./types").KindField[]; kind: string }>(
+      `/kind-fields?kind=${encodeURIComponent(kind)}`,
+    ),
+  listCategories: () =>
+    request<{ items: import("./types").Category[] }>("/categories"),
+  createCategory: (body: import("./types").CategoryInput) =>
+    request<import("./types").Category>("/categories", {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+  updateCategory: (id: string, body: import("./types").CategoryInput) =>
+    request<import("./types").Category>(`/categories/${id}`, {
+      method: "PUT",
+      body: JSON.stringify(body),
+    }),
+  deleteCategory: (id: string) =>
+    request<{ status: string }>(`/categories/${id}`, { method: "DELETE" }),
+  listSubmissions: (status: string, page: number, size: number) =>
+    request<{
+      items: import("./types").SubmissionRow[];
+      page: number;
+      size: number;
+      total: number;
+      pending: number;
+    }>(`/submissions?status=${encodeURIComponent(status)}&page=${page}&size=${size}`),
+  getSubmission: (id: string) =>
+    request<import("./types").SubmissionDetail>(`/submissions/${id}`),
+  approveSubmission: (id: string) =>
+    request<import("./types").ProductDetail>(`/submissions/${id}/approve`, {
+      method: "POST",
+    }),
+  rejectSubmission: (id: string, note: string) =>
+    request<{ status: string }>(`/submissions/${id}/reject`, {
+      method: "POST",
+      body: JSON.stringify({ note }),
+    }),
+  listApiKeys: () =>
+    request<{ items: import("./types").ApiKey[] }>("/keys"),
+  createApiKey: (body: {
+    name: string;
+    owner_email?: string;
+    tier?: string;
+    rate_limit_per_min?: number;
+    quota_total?: number;
+  }) =>
+    request<{ key: string; item: import("./types").ApiKey; warning: string }>(
+      "/keys",
+      { method: "POST", body: JSON.stringify(body) },
+    ),
+  revokeApiKey: (id: string) =>
+    request<{ status: string }>(`/keys/${id}`, { method: "DELETE" }),
+  stats: () => request<import("./types").AdminStats>("/stats"),
+  auditLog: (page: number, size: number) =>
+    request<{
+      items: import("./types").AuditLogRow[];
+      page: number;
+      size: number;
+      total: number;
+    }>(`/audit?page=${page}&size=${size}`),
+  bulkProducts: (body: {
+    ids: string[];
+    action: "status" | "category";
+    status?: string;
+    category_id?: string | null;
+  }) =>
+    request<{ status: string; affected: number }>("/products/bulk", {
+      method: "POST",
+      body: JSON.stringify(body),
+    }),
+};
@@ -0,0 +1,304 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { ApiKey } from "../types";
+import { Copy, KeyRound, Plus, Trash2 } from "lucide-react";
+
+const TIERS = [
+  { key: "free", label: "免费 (free)", rate: 120, quota: 1000 },
+  { key: "registered", label: "注册用户 (registered)", rate: 300, quota: 100000 },
+  { key: "partner", label: "合作方 (partner)", rate: 600, quota: 0 },
+  { key: "internal", label: "内部 (internal)", rate: 6000, quota: 0 },
+];
+
+function tierLabel(tier: string): string {
+  return TIERS.find((t) => t.key === tier)?.label ?? tier;
+}
+
+export default function ApiKeysPage() {
+  const [rows, setRows] = useState<ApiKey[]>([]);
+  const [error, setError] = useState("");
+  const [creating, setCreating] = useState(false);
+  const [newKey, setNewKey] = useState<string | null>(null);
+
+  async function load() {
+    setError("");
+    try {
+      const res = await api.listApiKeys();
+      setRows(res.items);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "加载失败");
+    }
+  }
+
+  useEffect(() => {
+    load();
+  }, []);
+
+  async function revoke(id: string, name: string) {
+    if (!confirm(`确认吊销密钥「${name}」？使用该密钥的请求将立即被拒绝。`)) return;
+    try {
+      await api.revokeApiKey(id);
+      await load();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "操作失败");
+    }
+  }
+
+  return (
+    <div className="mx-auto max-w-4xl">
+      <div className="flex items-center justify-between mb-4">
+        <div>
+          <h2 className="text-lg font-semibold text-gray-800 flex items-center gap-2">
+            <KeyRound className="h-5 w-5 text-emerald-600" /> API 密钥
+          </h2>
+          <p className="text-sm text-gray-500 mt-1">
+            公开 API 免费只读，匿名也可调用（低额度）。签发密钥可获得更高速率上限并归属用量。
+          </p>
+        </div>
+        <button
+          onClick={() => setCreating(true)}
+          className="px-4 py-2 rounded-lg bg-emerald-600 text-white text-sm font-medium hover:bg-emerald-700 flex items-center gap-1.5"
+        >
+          <Plus className="h-4 w-4" /> 签发密钥
+        </button>
+      </div>
+
+      {error && (
+        <div className="mb-3 bg-red-50 text-red-700 text-sm rounded px-4 py-2">{error}</div>
+      )}
+
+      {newKey && (
+        <div className="mb-4 bg-amber-50 border border-amber-200 rounded-lg p-4">
+          <div className="text-sm font-medium text-amber-800 mb-1">
+            密钥已生成，请立即复制保存——它只显示这一次。
+          </div>
+          <div className="flex items-center gap-2">
+            <code className="flex-1 bg-white border rounded px-3 py-2 text-sm break-all">
+              {newKey}
+            </code>
+            <button
+              onClick={() => navigator.clipboard?.writeText(newKey)}
+              className="px-3 py-2 rounded border text-sm text-gray-600 hover:bg-gray-50 flex items-center gap-1"
+            >
+              <Copy className="h-4 w-4" /> 复制
+            </button>
+            <button
+              onClick={() => setNewKey(null)}
+              className="px-3 py-2 rounded text-sm text-gray-500 hover:bg-gray-100"
+            >
+              我已保存
+            </button>
+          </div>
+        </div>
+      )}
+
+      {creating && (
+        <CreateKeyForm
+          onClose={() => setCreating(false)}
+          onCreated={(plaintext) => {
+            setCreating(false);
+            setNewKey(plaintext);
+            load();
+          }}
+        />
+      )}
+
+      <div className="bg-white border rounded-lg overflow-hidden">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-gray-500 text-left">
+            <tr>
+              <th className="px-4 py-2 font-medium">名称</th>
+              <th className="px-4 py-2 font-medium">前缀</th>
+              <th className="px-4 py-2 font-medium">级别</th>
+              <th className="px-4 py-2 font-medium">速率/分钟</th>
+              <th className="px-4 py-2 font-medium">用量(今日/累计)</th>
+              <th className="px-4 py-2 font-medium">累计配额</th>
+              <th className="px-4 py-2 font-medium">状态</th>
+              <th className="px-4 py-2 font-medium"></th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {rows.length === 0 ? (
+              <tr>
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                  暂无密钥
+                </td>
+              </tr>
+            ) : (
+              rows.map((k) => (
+                <tr key={k.id} className={k.revoked_at ? "opacity-50" : ""}>
+                  <td className="px-4 py-2 text-gray-800">
+                    {k.name}
+                    {k.owner_email && (
+                      <span className="block text-xs text-gray-400">{k.owner_email}</span>
+                    )}
+                  </td>
+                  <td className="px-4 py-2 text-gray-500">
+                    <code>{k.key_prefix}…</code>
+                  </td>
+                  <td className="px-4 py-2 text-gray-600">{tierLabel(k.tier)}</td>
+                  <td className="px-4 py-2 text-gray-600">{k.rate_limit_per_min}</td>
+                  <td className="px-4 py-2 text-gray-600">
+                    {k.usage.today} / {k.usage.total}
+                  </td>
+                  <td className="px-4 py-2 text-gray-600">
+                    {k.quota_total > 0 ? (
+                      <span className={k.usage.total >= k.quota_total ? "text-red-600" : ""}>
+                        {k.usage.total.toLocaleString()} / {k.quota_total.toLocaleString()}
+                      </span>
+                    ) : (
+                      <span className="text-gray-400">不限</span>
+                    )}
+                  </td>
+                  <td className="px-4 py-2">
+                    {k.revoked_at ? (
+                      <span className="text-xs rounded px-2 py-0.5 bg-red-50 text-red-700">
+                        已吊销
+                      </span>
+                    ) : (
+                      <span className="text-xs rounded px-2 py-0.5 bg-emerald-50 text-emerald-700">
+                        启用中
+                      </span>
+                    )}
+                  </td>
+                  <td className="px-4 py-2 text-right">
+                    {!k.revoked_at && (
+                      <button
+                        onClick={() => revoke(k.id, k.name)}
+                        className="text-gray-400 hover:text-red-600"
+                        title="吊销"
+                      >
+                        <Trash2 className="h-4 w-4" />
+                      </button>
+                    )}
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
+
+function CreateKeyForm({
+  onClose,
+  onCreated,
+}: {
+  onClose: () => void;
+  onCreated: (plaintext: string) => void;
+}) {
+  const [name, setName] = useState("");
+  const [ownerEmail, setOwnerEmail] = useState("");
+  const [tier, setTier] = useState("free");
+  const [rate, setRate] = useState(120);
+  const [quota, setQuota] = useState(1000);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState("");
+
+  function pickTier(t: string) {
+    setTier(t);
+    const def = TIERS.find((x) => x.key === t);
+    if (def) {
+      setRate(def.rate);
+      setQuota(def.quota);
+    }
+  }
+
+  async function submit() {
+    if (!name.trim()) {
+      setError("名称不能为空");
+      return;
+    }
+    setBusy(true);
+    setError("");
+    try {
+      const res = await api.createApiKey({
+        name: name.trim(),
+        owner_email: ownerEmail.trim() || undefined,
+        tier,
+        rate_limit_per_min: rate,
+        quota_total: quota,
+      });
+      onCreated(res.key);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "创建失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  return (
+    <div className="mb-4 bg-white border rounded-lg p-5">
+      <h3 className="font-medium text-gray-700 mb-3">签发新密钥</h3>
+      {error && <div className="mb-3 bg-red-50 text-red-700 text-sm rounded px-3 py-2">{error}</div>}
+      <div className="grid grid-cols-2 gap-4">
+        <label className="block">
+          <span className="text-xs text-gray-500">名称 *</span>
+          <input
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            placeholder="例如：我的 App / 合作方 X"
+          />
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">负责人邮箱（可选）</span>
+          <input
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={ownerEmail}
+            onChange={(e) => setOwnerEmail(e.target.value)}
+            placeholder="owner@example.com"
+          />
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">级别</span>
+          <select
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1 bg-white"
+            value={tier}
+            onChange={(e) => pickTier(e.target.value)}
+          >
+            {TIERS.map((t) => (
+              <option key={t.key} value={t.key}>
+                {t.label}
+              </option>
+            ))}
+          </select>
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">速率上限（次/分钟）</span>
+          <input
+            type="number"
+            min={1}
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={rate}
+            onChange={(e) => setRate(Math.max(1, parseInt(e.target.value || "1", 10)))}
+          />
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">累计配额（总调用次数，0=不限）</span>
+          <input
+            type="number"
+            min={0}
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={quota}
+            onChange={(e) => setQuota(Math.max(0, parseInt(e.target.value || "0", 10)))}
+          />
+        </label>
+      </div>
+      <div className="mt-4 flex gap-2">
+        <button
+          onClick={submit}
+          disabled={busy}
+          className="px-4 py-2 rounded bg-emerald-600 text-white text-sm hover:bg-emerald-700 disabled:opacity-60"
+        >
+          生成
+        </button>
+        <button onClick={onClose} className="px-4 py-2 rounded border text-sm text-gray-600">
+          取消
+        </button>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,115 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { AuditLogRow } from "../types";
+import { ScrollText } from "lucide-react";
+
+const ACTION_LABEL: Record<string, string> = {
+  create: "新建",
+  update: "修改",
+  delete: "删除",
+  add_image: "添加图片",
+  delete_image: "删除图片",
+  bulk_status: "批量改状态",
+  bulk_category: "批量改分类",
+};
+
+const ENTITY_LABEL: Record<string, string> = {
+  product: "商品",
+  category: "分类",
+  brand: "品牌",
+};
+
+export default function AuditLogPage() {
+  const [rows, setRows] = useState<AuditLogRow[]>([]);
+  const [total, setTotal] = useState(0);
+  const [page, setPage] = useState(1);
+  const size = 30;
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    setError("");
+    api
+      .auditLog(page, size)
+      .then((r) => {
+        setRows(r.items);
+        setTotal(r.total);
+      })
+      .catch((e) => setError(e instanceof ApiError ? e.message : "加载失败"));
+  }, [page]);
+
+  const pages = Math.max(1, Math.ceil(total / size));
+
+  return (
+    <div className="mx-auto max-w-5xl">
+      <h2 className="mb-4 flex items-center gap-2 text-lg font-semibold text-gray-800">
+        <ScrollText className="h-5 w-5 text-emerald-600" /> 操作日志
+        <span className="text-sm font-normal text-gray-400">共 {total} 条</span>
+      </h2>
+
+      {error && (
+        <div className="mb-3 rounded bg-red-50 px-4 py-2 text-sm text-red-700">{error}</div>
+      )}
+
+      <div className="overflow-hidden rounded-lg border bg-white">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-left text-xs uppercase text-gray-500">
+            <tr>
+              <th className="px-4 py-2 font-medium">时间</th>
+              <th className="px-4 py-2 font-medium">操作人</th>
+              <th className="px-4 py-2 font-medium">动作</th>
+              <th className="px-4 py-2 font-medium">对象</th>
+              <th className="px-4 py-2 font-medium">字段</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {rows.length === 0 ? (
+              <tr>
+                <td colSpan={5} className="px-4 py-8 text-center text-gray-400">
+                  暂无记录
+                </td>
+              </tr>
+            ) : (
+              rows.map((e) => (
+                <tr key={e.id} className="hover:bg-gray-50">
+                  <td className="whitespace-nowrap px-4 py-2 text-gray-500">
+                    {new Date(e.created_at).toLocaleString()}
+                  </td>
+                  <td className="px-4 py-2 text-gray-700">{e.actor}</td>
+                  <td className="px-4 py-2 text-gray-700">
+                    {ACTION_LABEL[e.action] || e.action}
+                  </td>
+                  <td className="px-4 py-2 text-gray-600">
+                    {ENTITY_LABEL[e.entity] || e.entity}
+                  </td>
+                  <td className="px-4 py-2 text-xs text-gray-400">
+                    {e.fields.length ? e.fields.join(", ") : "—"}
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      <div className="mt-4 flex items-center justify-end gap-2 text-sm text-gray-600">
+        <button
+          disabled={page <= 1}
+          onClick={() => setPage((p) => p - 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          上一页
+        </button>
+        <span>
+          {page} / {pages}
+        </span>
+        <button
+          disabled={page >= pages}
+          onClick={() => setPage((p) => p + 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          下一页
+        </button>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,305 @@
+import { useEffect, useMemo, useState } from "react";
+import { api, ApiError } from "../api";
+import type { Brand } from "../types";
+import { Tag, Pencil, Plus, Trash2, GitMerge, Search } from "lucide-react";
+
+type EditState = { id: string; name: string };
+type MergeState = { source: Brand; targetId: string };
+
+export default function BrandsPage() {
+  const [rows, setRows] = useState<Brand[]>([]);
+  const [error, setError] = useState("");
+  const [query, setQuery] = useState("");
+  const [creating, setCreating] = useState(false);
+  const [newName, setNewName] = useState("");
+  const [edit, setEdit] = useState<EditState | null>(null);
+  const [merge, setMerge] = useState<MergeState | null>(null);
+  const [busy, setBusy] = useState(false);
+
+  async function load() {
+    setError("");
+    try {
+      const res = await api.listBrands();
+      setRows(res.items);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "加载失败");
+    }
+  }
+
+  useEffect(() => {
+    load();
+  }, []);
+
+  const filtered = useMemo(() => {
+    const q = query.trim().toLowerCase();
+    if (!q) return rows;
+    return rows.filter((b) => b.name.toLowerCase().includes(q));
+  }, [rows, query]);
+
+  function fail(e: unknown, fallback: string) {
+    setError(e instanceof ApiError ? e.message : fallback);
+  }
+
+  async function create() {
+    if (!newName.trim()) return;
+    setBusy(true);
+    setError("");
+    try {
+      await api.createBrand(newName.trim());
+      setNewName("");
+      setCreating(false);
+      await load();
+    } catch (e) {
+      fail(e, "新建失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function saveEdit() {
+    if (!edit || !edit.name.trim()) return;
+    setBusy(true);
+    setError("");
+    try {
+      await api.updateBrand(edit.id, edit.name.trim());
+      setEdit(null);
+      await load();
+    } catch (e) {
+      fail(e, "保存失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function remove(b: Brand) {
+    if (!confirm(`确认删除品牌「${b.name}」？`)) return;
+    setError("");
+    try {
+      await api.deleteBrand(b.id);
+      await load();
+    } catch (e) {
+      fail(e, "删除失败");
+    }
+  }
+
+  async function doMerge() {
+    if (!merge || !merge.targetId) return;
+    const target = rows.find((b) => b.id === merge.targetId);
+    if (
+      !confirm(
+        `将「${merge.source.name}」的 ${merge.source.product_count} 个商品并入「${target?.name}」，并删除「${merge.source.name}」？`,
+      )
+    )
+      return;
+    setBusy(true);
+    setError("");
+    try {
+      await api.mergeBrands(merge.source.id, merge.targetId);
+      setMerge(null);
+      await load();
+    } catch (e) {
+      fail(e, "合并失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  return (
+    <div className="mx-auto max-w-4xl">
+      <div className="flex items-center justify-between mb-4">
+        <div>
+          <h2 className="text-lg font-semibold text-gray-800 flex items-center gap-2">
+            <Tag className="h-5 w-5 text-emerald-600" /> 品牌管理
+          </h2>
+          <p className="text-sm text-gray-500 mt-1">
+            维护品牌名录。可重命名、删除未被引用的品牌，或将重复品牌合并到一起。
+          </p>
+        </div>
+        <button
+          onClick={() => {
+            setCreating(true);
+            setNewName("");
+          }}
+          className="px-4 py-2 rounded-lg bg-emerald-600 text-white text-sm font-medium hover:bg-emerald-700 flex items-center gap-1.5"
+        >
+          <Plus className="h-4 w-4" /> 新建品牌
+        </button>
+      </div>
+
+      {error && (
+        <div className="mb-3 bg-red-50 text-red-700 text-sm rounded px-4 py-2">{error}</div>
+      )}
+
+      <div className="mb-3 relative w-72">
+        <Search className="absolute left-2 top-2.5 h-4 w-4 text-gray-400" />
+        <input
+          value={query}
+          onChange={(e) => setQuery(e.target.value)}
+          placeholder="筛选品牌名"
+          className="w-full rounded border border-gray-300 py-2 pl-8 pr-3 text-sm focus:border-emerald-500 focus:outline-none"
+        />
+      </div>
+
+      {creating && (
+        <div className="mb-4 bg-white border rounded-lg p-5">
+          <h3 className="font-medium text-gray-700 mb-3">新建品牌</h3>
+          <div className="flex items-end gap-2">
+            <label className="block flex-1">
+              <span className="text-xs text-gray-500">品牌名称 *</span>
+              <input
+                autoFocus
+                className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+                value={newName}
+                onChange={(e) => setNewName(e.target.value)}
+                onKeyDown={(e) => e.key === "Enter" && create()}
+                placeholder="例如：可口可乐"
+              />
+            </label>
+            <button
+              onClick={create}
+              disabled={busy}
+              className="px-4 py-2 rounded bg-emerald-600 text-white text-sm hover:bg-emerald-700 disabled:opacity-60"
+            >
+              保存
+            </button>
+            <button
+              onClick={() => setCreating(false)}
+              className="px-4 py-2 rounded border text-sm text-gray-600"
+            >
+              取消
+            </button>
+          </div>
+        </div>
+      )}
+
+      {merge && (
+        <div className="mb-4 bg-white border rounded-lg p-5">
+          <h3 className="font-medium text-gray-700 mb-3 flex items-center gap-1.5">
+            <GitMerge className="h-4 w-4 text-emerald-600" /> 合并品牌
+          </h3>
+          <p className="text-sm text-gray-500 mb-3">
+            把「{merge.source.name}」（{merge.source.product_count} 个商品）合并到下面选择的品牌，源品牌将被删除。
+          </p>
+          <div className="flex items-end gap-2">
+            <label className="block flex-1">
+              <span className="text-xs text-gray-500">合并到</span>
+              <select
+                className="w-full border rounded-md px-3 py-2 text-sm mt-1 bg-white"
+                value={merge.targetId}
+                onChange={(e) => setMerge({ ...merge, targetId: e.target.value })}
+              >
+                <option value="">（请选择目标品牌）</option>
+                {rows
+                  .filter((b) => b.id !== merge.source.id)
+                  .map((b) => (
+                    <option key={b.id} value={b.id}>
+                      {b.name}（{b.product_count}）
+                    </option>
+                  ))}
+              </select>
+            </label>
+            <button
+              onClick={doMerge}
+              disabled={busy || !merge.targetId}
+              className="px-4 py-2 rounded bg-emerald-600 text-white text-sm hover:bg-emerald-700 disabled:opacity-60"
+            >
+              合并
+            </button>
+            <button
+              onClick={() => setMerge(null)}
+              className="px-4 py-2 rounded border text-sm text-gray-600"
+            >
+              取消
+            </button>
+          </div>
+        </div>
+      )}
+
+      <div className="bg-white border rounded-lg overflow-hidden">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-gray-500 text-left">
+            <tr>
+              <th className="px-4 py-2 font-medium">品牌</th>
+              <th className="px-4 py-2 font-medium">商品数</th>
+              <th className="px-4 py-2 font-medium"></th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {filtered.length === 0 ? (
+              <tr>
+                <td colSpan={3} className="px-4 py-8 text-center text-gray-400">
+                  {rows.length === 0 ? "暂无品牌" : "无匹配品牌"}
+                </td>
+              </tr>
+            ) : (
+              filtered.map((b) => (
+                <tr key={b.id} className="hover:bg-gray-50">
+                  <td className="px-4 py-2 text-gray-800">
+                    {edit && edit.id === b.id ? (
+                      <input
+                        autoFocus
+                        className="border rounded px-2 py-1 text-sm w-64"
+                        value={edit.name}
+                        onChange={(e) => setEdit({ ...edit, name: e.target.value })}
+                        onKeyDown={(e) => {
+                          if (e.key === "Enter") saveEdit();
+                          if (e.key === "Escape") setEdit(null);
+                        }}
+                      />
+                    ) : (
+                      <span className="font-medium">{b.name}</span>
+                    )}
+                  </td>
+                  <td className="px-4 py-2 text-gray-600">{b.product_count}</td>
+                  <td className="px-4 py-2 text-right whitespace-nowrap">
+                    {edit && edit.id === b.id ? (
+                      <>
+                        <button
+                          onClick={saveEdit}
+                          disabled={busy}
+                          className="text-emerald-600 hover:text-emerald-700 text-xs mr-3"
+                        >
+                          保存
+                        </button>
+                        <button
+                          onClick={() => setEdit(null)}
+                          className="text-gray-400 hover:text-gray-600 text-xs"
+                        >
+                          取消
+                        </button>
+                      </>
+                    ) : (
+                      <>
+                        <button
+                          onClick={() => setEdit({ id: b.id, name: b.name })}
+                          className="text-gray-400 hover:text-emerald-600 mr-3"
+                          title="重命名"
+                        >
+                          <Pencil className="h-4 w-4" />
+                        </button>
+                        <button
+                          onClick={() => setMerge({ source: b, targetId: "" })}
+                          className="text-gray-400 hover:text-emerald-600 mr-3"
+                          title="合并到其它品牌"
+                        >
+                          <GitMerge className="h-4 w-4" />
+                        </button>
+                        <button
+                          onClick={() => remove(b)}
+                          className="text-gray-400 hover:text-red-600"
+                          title="删除"
+                        >
+                          <Trash2 className="h-4 w-4" />
+                        </button>
+                      </>
+                    )}
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,311 @@
+import { useEffect, useMemo, useState } from "react";
+import { api, ApiError } from "../api";
+import type { Category, CategoryInput } from "../types";
+import { FolderTree, Pencil, Plus, Trash2 } from "lucide-react";
+
+type FormState = {
+  mode: "create" | "edit";
+  id?: string;
+  name_zh: string;
+  name_en: string;
+  slug: string;
+  parent_id: string; // "" = top level
+  gpc_brick_code: string;
+};
+
+function emptyForm(parentId = ""): FormState {
+  return {
+    mode: "create",
+    name_zh: "",
+    name_en: "",
+    slug: "",
+    parent_id: parentId,
+    gpc_brick_code: "",
+  };
+}
+
+export default function CategoriesPage() {
+  const [rows, setRows] = useState<Category[]>([]);
+  const [error, setError] = useState("");
+  const [form, setForm] = useState<FormState | null>(null);
+
+  async function load() {
+    setError("");
+    try {
+      const res = await api.listCategories();
+      setRows(res.items);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "加载失败");
+    }
+  }
+
+  useEffect(() => {
+    load();
+  }, []);
+
+  async function remove(c: Category) {
+    if (!confirm(`确认删除分类「${c.name_zh}」(${c.path})？`)) return;
+    setError("");
+    try {
+      await api.deleteCategory(c.id);
+      await load();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "删除失败");
+    }
+  }
+
+  return (
+    <div className="mx-auto max-w-5xl">
+      <div className="flex items-center justify-between mb-4">
+        <div>
+          <h2 className="text-lg font-semibold text-gray-800 flex items-center gap-2">
+            <FolderTree className="h-5 w-5 text-emerald-600" /> 分类管理
+          </h2>
+          <p className="text-sm text-gray-500 mt-1">
+            维护商品分类树。英文标识(slug)用于分类路径，新建后不可修改；可重命名、移动层级、删除空分类。
+          </p>
+        </div>
+        <button
+          onClick={() => setForm(emptyForm())}
+          className="px-4 py-2 rounded-lg bg-emerald-600 text-white text-sm font-medium hover:bg-emerald-700 flex items-center gap-1.5"
+        >
+          <Plus className="h-4 w-4" /> 新建顶级分类
+        </button>
+      </div>
+
+      {error && (
+        <div className="mb-3 bg-red-50 text-red-700 text-sm rounded px-4 py-2">{error}</div>
+      )}
+
+      {form && (
+        <CategoryForm
+          form={form}
+          categories={rows}
+          onClose={() => setForm(null)}
+          onSaved={() => {
+            setForm(null);
+            load();
+          }}
+          onError={setError}
+        />
+      )}
+
+      <div className="bg-white border rounded-lg overflow-hidden">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-gray-500 text-left">
+            <tr>
+              <th className="px-4 py-2 font-medium">名称</th>
+              <th className="px-4 py-2 font-medium">路径</th>
+              <th className="px-4 py-2 font-medium">GPC</th>
+              <th className="px-4 py-2 font-medium">商品数</th>
+              <th className="px-4 py-2 font-medium"></th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {rows.length === 0 ? (
+              <tr>
+                <td colSpan={5} className="px-4 py-8 text-center text-gray-400">
+                  暂无分类
+                </td>
+              </tr>
+            ) : (
+              rows.map((c) => (
+                <tr key={c.id} className="hover:bg-gray-50">
+                  <td className="px-4 py-2 text-gray-800">
+                    <span style={{ paddingLeft: `${c.level * 18}px` }} className="inline-flex items-center gap-2">
+                      {c.level > 0 && <span className="text-gray-300">└</span>}
+                      <span className="font-medium">{c.name_zh}</span>
+                      {c.name_en && <span className="text-xs text-gray-400">{c.name_en}</span>}
+                    </span>
+                  </td>
+                  <td className="px-4 py-2 text-gray-500">
+                    <code className="text-xs">{c.path}</code>
+                  </td>
+                  <td className="px-4 py-2 text-gray-500 text-xs">{c.gpc_brick_code || "—"}</td>
+                  <td className="px-4 py-2 text-gray-600">{c.product_count}</td>
+                  <td className="px-4 py-2 text-right whitespace-nowrap">
+                    <button
+                      onClick={() => setForm(emptyForm(c.id))}
+                      className="text-gray-400 hover:text-emerald-600 mr-3"
+                      title="新增子分类"
+                    >
+                      <Plus className="h-4 w-4" />
+                    </button>
+                    <button
+                      onClick={() =>
+                        setForm({
+                          mode: "edit",
+                          id: c.id,
+                          name_zh: c.name_zh,
+                          name_en: c.name_en ?? "",
+                          slug: c.path,
+                          parent_id: c.parent_id ?? "",
+                          gpc_brick_code: c.gpc_brick_code ?? "",
+                        })
+                      }
+                      className="text-gray-400 hover:text-emerald-600 mr-3"
+                      title="编辑"
+                    >
+                      <Pencil className="h-4 w-4" />
+                    </button>
+                    <button
+                      onClick={() => remove(c)}
+                      className="text-gray-400 hover:text-red-600"
+                      title="删除"
+                    >
+                      <Trash2 className="h-4 w-4" />
+                    </button>
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
+
+function CategoryForm({
+  form,
+  categories,
+  onClose,
+  onSaved,
+  onError,
+}: {
+  form: FormState;
+  categories: Category[];
+  onClose: () => void;
+  onSaved: () => void;
+  onError: (msg: string) => void;
+}) {
+  const [state, setState] = useState<FormState>(form);
+  const [busy, setBusy] = useState(false);
+
+  // When editing, the node itself and its descendants are not valid parents.
+  const parentOptions = useMemo(() => {
+    if (state.mode === "create") return categories;
+    const self = categories.find((c) => c.id === state.id);
+    if (!self) return categories;
+    return categories.filter(
+      (c) => c.id !== self.id && !c.path.startsWith(self.path + "."),
+    );
+  }, [categories, state.mode, state.id]);
+
+  function set<K extends keyof FormState>(key: K, value: FormState[K]) {
+    setState((s) => ({ ...s, [key]: value }));
+  }
+
+  async function submit() {
+    if (!state.name_zh.trim()) {
+      onError("分类名称不能为空");
+      return;
+    }
+    setBusy(true);
+    onError("");
+    const body: CategoryInput = {
+      name_zh: state.name_zh.trim(),
+      name_en: state.name_en.trim() || null,
+      parent_id: state.parent_id || null,
+      gpc_brick_code: state.gpc_brick_code.trim() || null,
+    };
+    if (state.mode === "create") body.slug = state.slug.trim() || null;
+    try {
+      if (state.mode === "create") {
+        await api.createCategory(body);
+      } else if (state.id) {
+        await api.updateCategory(state.id, body);
+      }
+      onSaved();
+    } catch (e) {
+      onError(e instanceof ApiError ? e.message : "保存失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  return (
+    <div className="mb-4 bg-white border rounded-lg p-5">
+      <h3 className="font-medium text-gray-700 mb-3">
+        {state.mode === "create" ? "新建分类" : "编辑分类"}
+      </h3>
+      <div className="grid grid-cols-2 gap-4">
+        <label className="block">
+          <span className="text-xs text-gray-500">中文名称 *</span>
+          <input
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={state.name_zh}
+            onChange={(e) => set("name_zh", e.target.value)}
+            placeholder="例如：饮料"
+          />
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">英文名称（可选）</span>
+          <input
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={state.name_en}
+            onChange={(e) => set("name_en", e.target.value)}
+            placeholder="Beverages"
+          />
+        </label>
+        <label className="block">
+          <span className="text-xs text-gray-500">上级分类</span>
+          <select
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1 bg-white"
+            value={state.parent_id}
+            onChange={(e) => set("parent_id", e.target.value)}
+          >
+            <option value="">（顶级分类）</option>
+            {parentOptions.map((c) => (
+              <option key={c.id} value={c.id}>
+                {"\u00A0".repeat(c.level * 2)}
+                {c.name_zh} ({c.path})
+              </option>
+            ))}
+          </select>
+        </label>
+        {state.mode === "create" ? (
+          <label className="block">
+            <span className="text-xs text-gray-500">英文标识 slug（可选，留空自动生成）</span>
+            <input
+              className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+              value={state.slug}
+              onChange={(e) => set("slug", e.target.value)}
+              placeholder="beverages"
+            />
+          </label>
+        ) : (
+          <label className="block">
+            <span className="text-xs text-gray-500">路径（不可修改）</span>
+            <input
+              className="w-full border rounded-md px-3 py-2 text-sm mt-1 bg-gray-50 text-gray-400"
+              value={state.slug}
+              disabled
+            />
+          </label>
+        )}
+        <label className="block">
+          <span className="text-xs text-gray-500">GPC Brick 编码（可选）</span>
+          <input
+            className="w-full border rounded-md px-3 py-2 text-sm mt-1"
+            value={state.gpc_brick_code}
+            onChange={(e) => set("gpc_brick_code", e.target.value)}
+            placeholder="10000224"
+          />
+        </label>
+      </div>
+      <div className="mt-4 flex gap-2">
+        <button
+          onClick={submit}
+          disabled={busy}
+          className="px-4 py-2 rounded bg-emerald-600 text-white text-sm hover:bg-emerald-700 disabled:opacity-60"
+        >
+          保存
+        </button>
+        <button onClick={onClose} className="px-4 py-2 rounded border text-sm text-gray-600">
+          取消
+        </button>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,75 @@
+import { useState } from "react";
+import { api, setToken } from "../api";
+import { Package } from "lucide-react";
+
+export default function Login({
+  onLoggedIn,
+}: {
+  onLoggedIn: (username: string) => void;
+}) {
+  const [username, setUsername] = useState("");
+  const [password, setPassword] = useState("");
+  const [error, setError] = useState("");
+  const [loading, setLoading] = useState(false);
+
+  async function submit(e: React.FormEvent) {
+    e.preventDefault();
+    setError("");
+    setLoading(true);
+    try {
+      const r = await api.login(username, password);
+      setToken(r.token);
+      onLoggedIn(r.username);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "登录失败");
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  return (
+    <div className="flex h-full items-center justify-center">
+      <form
+        onSubmit={submit}
+        className="w-80 rounded-xl bg-white p-8 shadow-md"
+      >
+        <div className="mb-6 flex flex-col items-center gap-2">
+          <Package className="h-8 w-8 text-emerald-600" />
+          <h1 className="text-lg font-semibold text-gray-800">
+            天工商品档案公共仓 · 管理后台
+          </h1>
+        </div>
+        {error && (
+          <div className="mb-4 rounded bg-red-50 px-3 py-2 text-sm text-red-600">
+            {error}
+          </div>
+        )}
+        <label className="mb-3 block">
+          <span className="mb-1 block text-sm text-gray-600">用户名</span>
+          <input
+            value={username}
+            onChange={(e) => setUsername(e.target.value)}
+            className="w-full rounded border border-gray-300 px-3 py-2 text-sm focus:border-emerald-500 focus:outline-none"
+            autoFocus
+          />
+        </label>
+        <label className="mb-5 block">
+          <span className="mb-1 block text-sm text-gray-600">密码</span>
+          <input
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            className="w-full rounded border border-gray-300 px-3 py-2 text-sm focus:border-emerald-500 focus:outline-none"
+          />
+        </label>
+        <button
+          type="submit"
+          disabled={loading}
+          className="w-full rounded bg-emerald-600 py-2 text-sm font-medium text-white hover:bg-emerald-700 disabled:opacity-60"
+        >
+          {loading ? "登录中…" : "登录"}
+        </button>
+      </form>
+    </div>
+  );
+}
@@ -0,0 +1,972 @@
+import { useEffect, useMemo, useState } from "react";
+import { api } from "../api";
+import {
+  AuditEntry,
+  Brand,
+  Category,
+  FIELD_LABELS,
+  KindField,
+  ProductDetail as Detail,
+} from "../types";
+import {
+  ArrowLeft,
+  ChevronLeft,
+  ChevronRight,
+  Plus,
+  Save,
+  Trash2,
+  AlertCircle,
+  History,
+  Star,
+} from "lucide-react";
+
+const GTIN_TYPES = ["EAN13", "EAN8", "UPC", "ITF14", "GTIN14"];
+const PACK_LEVELS: { value: string; label: string }[] = [
+  { value: "each", label: "消费单元" },
+  { value: "case", label: "箱" },
+  { value: "pallet", label: "托盘" },
+];
+
+const NUTRIMENT_KEYS: { key: string; label: string }[] = [
+  { key: "energy_kcal", label: "能量 (kcal)" },
+  { key: "energy_kj", label: "能量 (kJ)" },
+  { key: "fat", label: "脂肪 (g)" },
+  { key: "saturated_fat", label: "饱和脂肪 (g)" },
+  { key: "carbohydrates", label: "碳水 (g)" },
+  { key: "sugars", label: "糖 (g)" },
+  { key: "proteins", label: "蛋白质 (g)" },
+  { key: "salt", label: "盐 (g)" },
+];
+
+const STATUS_OPTIONS = [
+  { value: "active", label: "在用" },
+  { value: "merged", label: "已合并" },
+  { value: "deprecated", label: "已停用" },
+];
+
+const ACTION_LABEL: Record<string, string> = {
+  update: "编辑",
+  add_image: "新增图片",
+  delete_image: "删除图片",
+  add_msrp: "新增建议零售价",
+  delete_msrp: "删除建议零售价",
+  add_barcode: "新增条码",
+  delete_barcode: "删除条码",
+  set_primary_barcode: "设为主条码",
+};
+
+function Card({
+  title,
+  children,
+}: {
+  title: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="rounded-lg border border-gray-200 bg-white p-5">
+      <h3 className="mb-4 text-sm font-semibold text-gray-700">{title}</h3>
+      {children}
+    </div>
+  );
+}
+
+function Field({
+  label,
+  children,
+}: {
+  label: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <label className="block">
+      <span className="mb-1 block text-xs text-gray-500">{label}</span>
+      {children}
+    </label>
+  );
+}
+
+const inputCls =
+  "w-full rounded border border-gray-300 px-3 py-2 text-sm focus:border-emerald-500 focus:outline-none";
+
+export default function ProductDetail({
+  id,
+  onBack,
+  ids = [],
+  onNavigate,
+}: {
+  id: string;
+  onBack: () => void;
+  ids?: string[];
+  onNavigate?: (id: string) => void;
+}) {
+  const navIndex = ids.indexOf(id);
+  const prevId = navIndex > 0 ? ids[navIndex - 1] : null;
+  const nextId =
+    navIndex >= 0 && navIndex < ids.length - 1 ? ids[navIndex + 1] : null;
+  const [d, setD] = useState<Detail | null>(null);
+  const [brands, setBrands] = useState<Brand[]>([]);
+  const [categories, setCategories] = useState<Category[]>([]);
+  const [audit, setAudit] = useState<AuditEntry[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [saving, setSaving] = useState(false);
+  const [msg, setMsg] = useState("");
+  const [error, setError] = useState("");
+
+  // editable form state
+  const [name, setName] = useState("");
+  const [gtin, setGtin] = useState("");
+  const [brandName, setBrandName] = useState("");
+  const [categoryId, setCategoryId] = useState("");
+  const [netValue, setNetValue] = useState("");
+  const [netUnit, setNetUnit] = useState("");
+  const [country, setCountry] = useState("");
+  const [status, setStatus] = useState("active");
+  const [ingredients, setIngredients] = useState("");
+  const [allergens, setAllergens] = useState("");
+  const [additives, setAdditives] = useState("");
+  const [nutriments, setNutriments] = useState<Record<string, string>>({});
+  const [basis, setBasis] = useState("");
+  const [serving, setServing] = useState("");
+  const [nutriScore, setNutriScore] = useState("");
+  const [kindFields, setKindFields] = useState<KindField[]>([]);
+  const [attrs, setAttrs] = useState<Record<string, string>>({});
+
+  function hydrate(detail: Detail) {
+    setD(detail);
+    setName(detail.name);
+    setGtin(detail.gtin || "");
+    setBrandName(detail.brand || "");
+    setCategoryId(detail.category_id || "");
+    setNetValue(detail.net_content_value?.toString() || "");
+    setNetUnit(detail.net_content_unit || "");
+    setCountry(detail.country_of_origin || "");
+    setStatus(detail.status);
+    setIngredients(detail.ingredients_text || "");
+    setAllergens(detail.allergens.join(", "));
+    setAdditives(detail.additives.join(", "));
+    const nm: Record<string, string> = {};
+    if (detail.nutriments) {
+      for (const [k, v] of Object.entries(detail.nutriments)) nm[k] = String(v);
+    }
+    setNutriments(nm);
+    setBasis(detail.nutrition_basis || "");
+    setServing(detail.serving_size || "");
+    setNutriScore(detail.nutri_score || "");
+    const am: Record<string, string> = {};
+    if (detail.attributes) {
+      for (const [k, v] of Object.entries(detail.attributes)) {
+        am[k] = v == null ? "" : Array.isArray(v) ? v.join(", ") : String(v);
+      }
+    }
+    setAttrs(am);
+  }
+
+  function reload() {
+    setLoading(true);
+    Promise.all([api.getProduct(id), api.listAudit(id)])
+      .then(([detail, a]) => {
+        hydrate(detail);
+        setAudit(a.items);
+      })
+      .catch((e) => setError(e.message))
+      .finally(() => setLoading(false));
+  }
+
+  useEffect(() => {
+    reload();
+    api.listBrands().then((r) => setBrands(r.items)).catch(() => {});
+    api.listCategories().then((r) => setCategories(r.items)).catch(() => {});
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [id]);
+
+  const missing = useMemo(() => d?.missing ?? [], [d]);
+
+  const selectedKind = useMemo(() => {
+    const c = categories.find((x) => x.id === categoryId);
+    return c?.archive_kind || d?.archive_kind || "generic";
+  }, [categories, categoryId, d]);
+
+  useEffect(() => {
+    if (selectedKind && selectedKind !== "food") {
+      api
+        .listKindFields(selectedKind)
+        .then((r) => setKindFields(r.items))
+        .catch(() => setKindFields([]));
+    } else {
+      setKindFields([]);
+    }
+  }, [selectedKind]);
+
+  const specGroups = useMemo(() => {
+    const groups: { label: string; fields: KindField[] }[] = [];
+    for (const f of kindFields) {
+      let g = groups.find((x) => x.label === f.group_label);
+      if (!g) {
+        g = { label: f.group_label, fields: [] };
+        groups.push(g);
+      }
+      g.fields.push(f);
+    }
+    return groups;
+  }, [kindFields]);
+
+  const attrLabels = useMemo(() => {
+    const m: Record<string, string> = {};
+    for (const f of kindFields) m[f.field_key] = f.label_zh;
+    return m;
+  }, [kindFields]);
+
+  function parseList(s: string): string[] {
+    return s
+      .split(",")
+      .map((x) => x.trim())
+      .filter(Boolean);
+  }
+
+  async function save() {
+    setSaving(true);
+    setMsg("");
+    setError("");
+    const nm: Record<string, number> = {};
+    for (const [k, v] of Object.entries(nutriments)) {
+      const n = parseFloat(v);
+      if (!Number.isNaN(n)) nm[k] = n;
+    }
+    let attributes: Record<string, unknown> | undefined;
+    if (selectedKind !== "food") {
+      attributes = {};
+      for (const f of kindFields) {
+        const raw = (attrs[f.field_key] ?? "").trim();
+        if (raw === "") continue;
+        if (f.field_type === "number") {
+          const n = parseFloat(raw);
+          if (!Number.isNaN(n)) attributes[f.field_key] = n;
+        } else if (f.field_type === "list") {
+          attributes[f.field_key] = parseList(raw);
+        } else {
+          attributes[f.field_key] = raw;
+        }
+      }
+    }
+    const body = {
+      gtin: gtin.trim() || null,
+      name: name.trim(),
+      brand_name: brandName.trim() || null,
+      brand_id: brandName.trim() ? undefined : null,
+      category_id: categoryId || null,
+      net_content_value: netValue.trim() ? parseFloat(netValue) : null,
+      net_content_unit: netUnit.trim() || null,
+      country_of_origin: country.trim() || null,
+      status,
+      ingredients_text: ingredients.trim() || null,
+      allergens: parseList(allergens),
+      additives: parseList(additives),
+      nutriments: nm,
+      nutrition_basis: basis || null,
+      serving_size: serving.trim() || null,
+      nutri_score: nutriScore || null,
+      ...(attributes !== undefined ? { attributes } : {}),
+    };
+    try {
+      const updated = await api.updateProduct(id, body);
+      hydrate(updated);
+      const a = await api.listAudit(id);
+      setAudit(a.items);
+      setMsg("已保存");
+      setTimeout(() => setMsg(""), 2500);
+    } catch (e) {
+      setError(e instanceof Error ? e.message : "保存失败");
+    } finally {
+      setSaving(false);
+    }
+  }
+
+  if (loading) {
+    return <div className="text-gray-400">加载中…</div>;
+  }
+  if (!d) {
+    return (
+      <div>
+        <button onClick={onBack} className="text-emerald-600">
+          返回
+        </button>
+        <p className="mt-4 text-red-600">{error || "未找到商品"}</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="mx-auto max-w-5xl space-y-5">
+      <div className="flex items-center justify-between">
+        <div className="flex items-center gap-2">
+          <button
+            onClick={onBack}
+            className="flex items-center gap-1 text-sm text-gray-600 hover:text-gray-900"
+          >
+            <ArrowLeft className="h-4 w-4" /> 返回列表
+          </button>
+          {ids.length > 1 && navIndex >= 0 && (
+            <div className="ml-2 flex items-center gap-1 text-sm">
+              <button
+                onClick={() => prevId && onNavigate?.(prevId)}
+                disabled={!prevId}
+                className="flex items-center gap-1 rounded border border-gray-300 px-2 py-1 text-gray-600 hover:bg-gray-50 disabled:opacity-40"
+              >
+                <ChevronLeft className="h-4 w-4" /> 上一个
+              </button>
+              <span className="text-xs text-gray-400">
+                {navIndex + 1} / {ids.length}
+              </span>
+              <button
+                onClick={() => nextId && onNavigate?.(nextId)}
+                disabled={!nextId}
+                className="flex items-center gap-1 rounded border border-gray-300 px-2 py-1 text-gray-600 hover:bg-gray-50 disabled:opacity-40"
+              >
+                下一个 <ChevronRight className="h-4 w-4" />
+              </button>
+            </div>
+          )}
+        </div>
+        <div className="flex items-center gap-3">
+          {msg && <span className="text-sm text-emerald-600">{msg}</span>}
+          {error && <span className="text-sm text-red-600">{error}</span>}
+          <span className="text-xs text-gray-400">
+            质量分 {Math.round(d.quality_score * 100)}
+          </span>
+          <button
+            onClick={save}
+            disabled={saving}
+            className="flex items-center gap-1 rounded bg-emerald-600 px-4 py-2 text-sm text-white hover:bg-emerald-700 disabled:opacity-60"
+          >
+            <Save className="h-4 w-4" /> {saving ? "保存中…" : "保存"}
+          </button>
+        </div>
+      </div>
+
+      {missing.length > 0 && (
+        <div className="flex items-center gap-2 rounded-lg border border-amber-200 bg-amber-50 px-4 py-3 text-sm text-amber-700">
+          <AlertCircle className="h-4 w-4" />
+          待补全字段：
+          {missing.map((f) => FIELD_LABELS[f] || attrLabels[f] || f).join("、")}
+        </div>
+      )}
+
+      <Card title="基础信息">
+        <div className="grid grid-cols-2 gap-4">
+          <Field label="名称 *">
+            <input
+              className={inputCls}
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+            />
+          </Field>
+          <Field label="条码 (GTIN)">
+            <input
+              className={inputCls}
+              value={gtin}
+              onChange={(e) => setGtin(e.target.value)}
+            />
+          </Field>
+          <Field label="品牌（不存在将自动创建）">
+            <input
+              className={inputCls}
+              list="brand-list"
+              value={brandName}
+              onChange={(e) => setBrandName(e.target.value)}
+            />
+            <datalist id="brand-list">
+              {brands.map((b) => (
+                <option key={b.id} value={b.name} />
+              ))}
+            </datalist>
+          </Field>
+          <Field label="品类">
+            <select
+              className={inputCls}
+              value={categoryId}
+              onChange={(e) => setCategoryId(e.target.value)}
+            >
+              <option value="">（未分类）</option>
+              {categories.map((c) => (
+                <option key={c.id} value={c.id}>
+                  {"\u00A0".repeat(c.level * 2)}
+                  {c.name_zh} ({c.path})
+                </option>
+              ))}
+            </select>
+          </Field>
+          <Field label="净含量">
+            <input
+              className={inputCls}
+              type="number"
+              step="any"
+              value={netValue}
+              onChange={(e) => setNetValue(e.target.value)}
+            />
+          </Field>
+          <Field label="净含量单位 (g/ml/cl…)">
+            <input
+              className={inputCls}
+              value={netUnit}
+              onChange={(e) => setNetUnit(e.target.value)}
+            />
+          </Field>
+          <Field label="产地">
+            <input
+              className={inputCls}
+              value={country}
+              onChange={(e) => setCountry(e.target.value)}
+            />
+          </Field>
+          <Field label="状态">
+            <select
+              className={inputCls}
+              value={status}
+              onChange={(e) => setStatus(e.target.value)}
+            >
+              {STATUS_OPTIONS.map((o) => (
+                <option key={o.value} value={o.value}>
+                  {o.label}
+                </option>
+              ))}
+            </select>
+          </Field>
+        </div>
+      </Card>
+
+      {selectedKind === "food" && (
+      <Card title="配料与营养">
+        <div className="mb-4 grid grid-cols-2 gap-4">
+          <Field label="配料表">
+            <textarea
+              className={inputCls}
+              rows={3}
+              value={ingredients}
+              onChange={(e) => setIngredients(e.target.value)}
+            />
+          </Field>
+          <div className="grid grid-cols-2 gap-4">
+            <Field label="过敏原（逗号分隔）">
+              <input
+                className={inputCls}
+                value={allergens}
+                onChange={(e) => setAllergens(e.target.value)}
+              />
+            </Field>
+            <Field label="添加剂（逗号分隔）">
+              <input
+                className={inputCls}
+                value={additives}
+                onChange={(e) => setAdditives(e.target.value)}
+              />
+            </Field>
+            <Field label="营养基准">
+              <select
+                className={inputCls}
+                value={basis}
+                onChange={(e) => setBasis(e.target.value)}
+              >
+                <option value="">（未设置）</option>
+                <option value="per_100g">每 100g</option>
+                <option value="per_100ml">每 100ml</option>
+                <option value="per_serving">每份</option>
+              </select>
+            </Field>
+            <Field label="份量">
+              <input
+                className={inputCls}
+                value={serving}
+                onChange={(e) => setServing(e.target.value)}
+              />
+            </Field>
+            <Field label="Nutri-Score (A-E)">
+              <input
+                className={inputCls}
+                maxLength={1}
+                value={nutriScore}
+                onChange={(e) =>
+                  setNutriScore(e.target.value.toUpperCase())
+                }
+              />
+            </Field>
+          </div>
+        </div>
+        <div className="grid grid-cols-4 gap-3">
+          {NUTRIMENT_KEYS.map((n) => (
+            <Field key={n.key} label={n.label}>
+              <input
+                className={inputCls}
+                type="number"
+                step="any"
+                value={nutriments[n.key] ?? ""}
+                onChange={(e) =>
+                  setNutriments((prev) => ({ ...prev, [n.key]: e.target.value }))
+                }
+              />
+            </Field>
+          ))}
+        </div>
+      </Card>
+      )}
+
+      {selectedKind !== "food" && kindFields.length > 0 && (
+        <Card title="规格参数">
+          {specGroups.map((grp) => (
+            <div key={grp.label} className="mb-4 last:mb-0">
+              {grp.label && (
+                <h4 className="mb-2 text-xs font-medium text-gray-500">
+                  {grp.label}
+                </h4>
+              )}
+              <div className="grid grid-cols-3 gap-3">
+                {grp.fields.map((f) => (
+                  <Field
+                    key={f.field_key}
+                    label={f.unit ? `${f.label_zh} (${f.unit})` : f.label_zh}
+                  >
+                    {f.field_type === "select" ? (
+                      <select
+                        className={inputCls}
+                        value={attrs[f.field_key] ?? ""}
+                        onChange={(e) =>
+                          setAttrs((prev) => ({
+                            ...prev,
+                            [f.field_key]: e.target.value,
+                          }))
+                        }
+                      >
+                        <option value="">（未设置）</option>
+                        {f.options.map((o) => (
+                          <option key={o} value={o}>
+                            {o}
+                          </option>
+                        ))}
+                      </select>
+                    ) : f.field_type === "textarea" ? (
+                      <textarea
+                        className={inputCls}
+                        rows={3}
+                        value={attrs[f.field_key] ?? ""}
+                        onChange={(e) =>
+                          setAttrs((prev) => ({
+                            ...prev,
+                            [f.field_key]: e.target.value,
+                          }))
+                        }
+                      />
+                    ) : (
+                      <input
+                        className={inputCls}
+                        type={f.field_type === "number" ? "number" : "text"}
+                        step={f.field_type === "number" ? "any" : undefined}
+                        placeholder={f.placeholder ?? undefined}
+                        value={attrs[f.field_key] ?? ""}
+                        onChange={(e) =>
+                          setAttrs((prev) => ({
+                            ...prev,
+                            [f.field_key]: e.target.value,
+                          }))
+                        }
+                      />
+                    )}
+                  </Field>
+                ))}
+              </div>
+            </div>
+          ))}
+        </Card>
+      )}
+
+      <BarcodesCard product={d} onChange={reload} onError={setError} />
+      <ImagesCard
+        product={d}
+        onChange={reload}
+        onError={setError}
+      />
+      <MsrpCard product={d} onChange={reload} onError={setError} />
+
+      <Card title="操作记录">
+        {audit.length === 0 ? (
+          <p className="text-sm text-gray-400">暂无记录</p>
+        ) : (
+          <ul className="space-y-2 text-sm">
+            {audit.map((a) => (
+              <li
+                key={a.id}
+                className="flex items-center gap-3 text-gray-600"
+              >
+                <History className="h-3.5 w-3.5 text-gray-400" />
+                <span className="text-gray-400">{a.created_at}</span>
+                <span className="font-medium text-gray-700">{a.actor}</span>
+                <span>{ACTION_LABEL[a.action] || a.action}</span>
+                {a.fields.length > 0 && (
+                  <span className="text-gray-400">
+                    [{a.fields.map((f) => FIELD_LABELS[f] || f).join("、")}]
+                  </span>
+                )}
+              </li>
+            ))}
+          </ul>
+        )}
+      </Card>
+    </div>
+  );
+}
+
+function BarcodesCard({
+  product,
+  onChange,
+  onError,
+}: {
+  product: Detail;
+  onChange: () => void;
+  onError: (m: string) => void;
+}) {
+  const [gtin, setGtin] = useState("");
+  const [gtinType, setGtinType] = useState("EAN13");
+  const [packLevel, setPackLevel] = useState("each");
+  const [region, setRegion] = useState("");
+  const [busy, setBusy] = useState(false);
+
+  async function add() {
+    if (!gtin.trim()) return;
+    setBusy(true);
+    try {
+      await api.addBarcode(product.id, {
+        gtin: gtin.trim(),
+        gtin_type: gtinType,
+        pack_level: packLevel,
+        region: region.trim() || null,
+        is_primary: false,
+      });
+      setGtin("");
+      setRegion("");
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "添加失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+  async function remove(barcodeId: string) {
+    try {
+      await api.deleteBarcode(product.id, barcodeId);
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "删除失败");
+    }
+  }
+  async function makePrimary(barcodeId: string) {
+    try {
+      await api.setPrimaryBarcode(product.id, barcodeId);
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "设置失败");
+    }
+  }
+
+  return (
+    <Card title="条码（一品多码，主条码镜像到 GTIN）">
+      <div className="mb-3 space-y-2">
+        {product.barcodes.length === 0 && (
+          <span className="text-sm text-gray-400">暂无条码</span>
+        )}
+        {product.barcodes.map((b) => (
+          <div
+            key={b.id}
+            className="flex items-center gap-3 rounded border border-gray-100 bg-gray-50 px-3 py-2 text-sm"
+          >
+            <button
+              onClick={() => !b.is_primary && makePrimary(b.id)}
+              title={b.is_primary ? "主条码" : "设为主条码"}
+              disabled={b.is_primary}
+              className={
+                b.is_primary
+                  ? "text-amber-500"
+                  : "text-gray-300 hover:text-amber-500"
+              }
+            >
+              <Star
+                className="h-4 w-4"
+                fill={b.is_primary ? "currentColor" : "none"}
+              />
+            </button>
+            <span className="font-mono font-medium text-gray-800">
+              {b.gtin}
+            </span>
+            <span className="rounded bg-gray-200 px-1.5 py-0.5 text-[11px] text-gray-600">
+              {b.gtin_type}
+            </span>
+            <span className="text-gray-500">
+              {PACK_LEVELS.find((p) => p.value === b.pack_level)?.label ||
+                b.pack_level}
+            </span>
+            <span className="flex-1 text-gray-400">{b.region || ""}</span>
+            <button
+              onClick={() => remove(b.id)}
+              className="text-gray-400 hover:text-red-600"
+            >
+              <Trash2 className="h-4 w-4" />
+            </button>
+          </div>
+        ))}
+      </div>
+      <div className="flex flex-wrap items-end gap-2">
+        <Field label="条码 (GTIN)">
+          <input
+            className="w-44 rounded border border-gray-300 px-3 py-2 text-sm"
+            value={gtin}
+            onChange={(e) => setGtin(e.target.value)}
+            placeholder="8/12/13/14 位"
+          />
+        </Field>
+        <Field label="类型">
+          <select
+            className="rounded border border-gray-300 px-2 py-2 text-sm"
+            value={gtinType}
+            onChange={(e) => setGtinType(e.target.value)}
+          >
+            {GTIN_TYPES.map((t) => (
+              <option key={t} value={t}>
+                {t}
+              </option>
+            ))}
+          </select>
+        </Field>
+        <Field label="包装层级">
+          <select
+            className="rounded border border-gray-300 px-2 py-2 text-sm"
+            value={packLevel}
+            onChange={(e) => setPackLevel(e.target.value)}
+          >
+            {PACK_LEVELS.map((p) => (
+              <option key={p.value} value={p.value}>
+                {p.label}
+              </option>
+            ))}
+          </select>
+        </Field>
+        <Field label="地区（可选）">
+          <input
+            className="w-20 rounded border border-gray-300 px-3 py-2 text-sm"
+            value={region}
+            onChange={(e) => setRegion(e.target.value.toUpperCase())}
+          />
+        </Field>
+        <button
+          onClick={add}
+          disabled={busy}
+          className="flex items-center gap-1 rounded bg-gray-700 px-3 py-2 text-sm text-white hover:bg-gray-800 disabled:opacity-60"
+        >
+          <Plus className="h-4 w-4" /> 添加
+        </button>
+      </div>
+    </Card>
+  );
+}
+
+function ImagesCard({
+  product,
+  onChange,
+  onError,
+}: {
+  product: Detail;
+  onChange: () => void;
+  onError: (m: string) => void;
+}) {
+  const [url, setUrl] = useState("");
+  const [kind, setKind] = useState("front");
+
+  async function add() {
+    if (!url.trim()) return;
+    try {
+      await api.addImage(product.id, url.trim(), kind);
+      setUrl("");
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "添加失败");
+    }
+  }
+  async function remove(imageId: string) {
+    try {
+      await api.deleteImage(product.id, imageId);
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "删除失败");
+    }
+  }
+
+  return (
+    <Card title="图片（仅存 URL）">
+      <div className="mb-3 flex flex-wrap gap-3">
+        {product.images.length === 0 && (
+          <span className="text-sm text-gray-400">暂无图片</span>
+        )}
+        {product.images.map((im) => (
+          <div
+            key={im.id}
+            className="relative h-24 w-24 overflow-hidden rounded border border-gray-200"
+          >
+            <img
+              src={im.url}
+              alt={im.kind}
+              className="h-full w-full object-cover"
+            />
+            <button
+              onClick={() => remove(im.id)}
+              className="absolute right-1 top-1 rounded bg-black/50 p-1 text-white hover:bg-black/70"
+            >
+              <Trash2 className="h-3 w-3" />
+            </button>
+            <span className="absolute bottom-0 left-0 bg-black/50 px-1 text-[10px] text-white">
+              {im.kind}
+            </span>
+          </div>
+        ))}
+      </div>
+      <div className="flex items-center gap-2">
+        <input
+          className={inputCls}
+          placeholder="图片 URL"
+          value={url}
+          onChange={(e) => setUrl(e.target.value)}
+        />
+        <select
+          className="rounded border border-gray-300 px-2 py-2 text-sm"
+          value={kind}
+          onChange={(e) => setKind(e.target.value)}
+        >
+          <option value="front">正面</option>
+          <option value="ingredients">配料</option>
+          <option value="nutrition">营养</option>
+          <option value="other">其他</option>
+        </select>
+        <button
+          onClick={add}
+          className="flex items-center gap-1 whitespace-nowrap rounded bg-gray-700 px-3 py-2 text-sm text-white hover:bg-gray-800"
+        >
+          <Plus className="h-4 w-4" /> 添加
+        </button>
+      </div>
+    </Card>
+  );
+}
+
+function MsrpCard({
+  product,
+  onChange,
+  onError,
+}: {
+  product: Detail;
+  onChange: () => void;
+  onError: (m: string) => void;
+}) {
+  const [amount, setAmount] = useState("");
+  const [currency, setCurrency] = useState("CNY");
+  const [region, setRegion] = useState("CN");
+  const [date, setDate] = useState("");
+  const [note, setNote] = useState("");
+
+  async function add() {
+    const a = parseFloat(amount);
+    if (Number.isNaN(a)) return;
+    try {
+      await api.addMsrp(product.id, {
+        amount: a,
+        currency,
+        region,
+        effective_date: date || null,
+        note: note.trim() || null,
+      });
+      setAmount("");
+      setNote("");
+      setDate("");
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "添加失败");
+    }
+  }
+  async function remove(msrpId: string) {
+    try {
+      await api.deleteMsrp(product.id, msrpId);
+      onChange();
+    } catch (e) {
+      onError(e instanceof Error ? e.message : "删除失败");
+    }
+  }
+
+  return (
+    <Card title="官方建议零售价（MSRP 快照，非售卖）">
+      <div className="mb-3 space-y-2">
+        {product.msrp.length === 0 && (
+          <span className="text-sm text-gray-400">暂无记录</span>
+        )}
+        {product.msrp.map((m) => (
+          <div
+            key={m.id}
+            className="flex items-center gap-3 rounded border border-gray-100 bg-gray-50 px-3 py-2 text-sm"
+          >
+            <span className="font-medium text-gray-800">
+              {m.amount} {m.currency}
+            </span>
+            <span className="text-gray-500">{m.region}</span>
+            <span className="text-gray-400">{m.effective_date || ""}</span>
+            <span className="flex-1 text-gray-400">{m.note || ""}</span>
+            <button
+              onClick={() => remove(m.id)}
+              className="text-gray-400 hover:text-red-600"
+            >
+              <Trash2 className="h-4 w-4" />
+            </button>
+          </div>
+        ))}
+      </div>
+      <div className="flex flex-wrap items-end gap-2">
+        <Field label="金额">
+          <input
+            className="w-28 rounded border border-gray-300 px-3 py-2 text-sm"
+            type="number"
+            step="any"
+            value={amount}
+            onChange={(e) => setAmount(e.target.value)}
+          />
+        </Field>
+        <Field label="币种">
+          <input
+            className="w-20 rounded border border-gray-300 px-3 py-2 text-sm"
+            value={currency}
+            onChange={(e) => setCurrency(e.target.value.toUpperCase())}
+          />
+        </Field>
+        <Field label="地区">
+          <input
+            className="w-20 rounded border border-gray-300 px-3 py-2 text-sm"
+            value={region}
+            onChange={(e) => setRegion(e.target.value.toUpperCase())}
+          />
+        </Field>
+        <Field label="生效日期">
+          <input
+            className="rounded border border-gray-300 px-3 py-2 text-sm"
+            type="date"
+            value={date}
+            onChange={(e) => setDate(e.target.value)}
+          />
+        </Field>
+        <Field label="备注">
+          <input
+            className="w-40 rounded border border-gray-300 px-3 py-2 text-sm"
+            value={note}
+            onChange={(e) => setNote(e.target.value)}
+          />
+        </Field>
+        <button
+          onClick={add}
+          className="flex items-center gap-1 rounded bg-gray-700 px-3 py-2 text-sm text-white hover:bg-gray-800"
+        >
+          <Plus className="h-4 w-4" /> 添加
+        </button>
+      </div>
+    </Card>
+  );
+}
@@ -0,0 +1,574 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import { Brand, Category, FIELD_LABELS, ProductRow } from "../types";
+import { Search, AlertCircle, Plus, ChevronUp, ChevronDown, ChevronsUpDown } from "lucide-react";
+
+type SortKey =
+  | "name"
+  | "brand"
+  | "gtin"
+  | "category_path"
+  | "status"
+  | "quality_score";
+
+const STATUS_LABEL: Record<string, string> = {
+  active: "在用",
+  merged: "已合并",
+  deprecated: "已停用",
+};
+
+function QualityBadge({ score }: { score: number }) {
+  const pct = Math.round(score * 100);
+  const color =
+    score >= 0.8
+      ? "bg-emerald-100 text-emerald-700"
+      : score >= 0.5
+        ? "bg-amber-100 text-amber-700"
+        : "bg-red-100 text-red-700";
+  return (
+    <span className={`rounded px-2 py-0.5 text-xs font-medium ${color}`}>
+      {pct}
+    </span>
+  );
+}
+
+function SortableTh({
+  label,
+  sortKey,
+  sort,
+  order,
+  onSort,
+}: {
+  label: string;
+  sortKey: SortKey;
+  sort: SortKey | "";
+  order: "asc" | "desc";
+  onSort: (key: SortKey) => void;
+}) {
+  const active = sort === sortKey;
+  return (
+    <th className="px-4 py-3">
+      <button
+        type="button"
+        onClick={() => onSort(sortKey)}
+        className={`flex items-center gap-1 uppercase hover:text-gray-700 ${
+          active ? "text-emerald-600" : ""
+        }`}
+      >
+        {label}
+        {!active ? (
+          <ChevronsUpDown className="h-3.5 w-3.5 text-gray-300" />
+        ) : order === "asc" ? (
+          <ChevronUp className="h-3.5 w-3.5" />
+        ) : (
+          <ChevronDown className="h-3.5 w-3.5" />
+        )}
+      </button>
+    </th>
+  );
+}
+
+export default function ProductList({
+  onOpen,
+}: {
+  onOpen: (id: string, ids: string[]) => void;
+}) {
+  const [q, setQ] = useState("");
+  const [input, setInput] = useState("");
+  const [page, setPage] = useState(1);
+  const [size, setSize] = useState(20);
+  const [sort, setSort] = useState<SortKey | "">("");
+  const [order, setOrder] = useState<"asc" | "desc">("asc");
+  const [jump, setJump] = useState("");
+  const [rows, setRows] = useState<ProductRow[]>([]);
+  const [total, setTotal] = useState(0);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState("");
+  const [creating, setCreating] = useState(false);
+  const [selected, setSelected] = useState<Set<string>>(new Set());
+  const [categories, setCategories] = useState<Category[]>([]);
+  const [bulkStatus, setBulkStatus] = useState("");
+  const [bulkCategory, setBulkCategory] = useState("");
+  const [bulkBusy, setBulkBusy] = useState(false);
+
+  function reload() {
+    setLoading(true);
+    setError("");
+    api
+      .listProducts(q, page, size, sort || undefined, order)
+      .then((r) => {
+        setRows(r.items);
+        setTotal(r.total);
+      })
+      .catch((e) => setError(e.message))
+      .finally(() => setLoading(false));
+  }
+
+  useEffect(() => {
+    setSelected(new Set());
+    reload();
+  }, [q, page, size, sort, order]);
+
+  function toggleSort(key: SortKey) {
+    setPage(1);
+    if (sort !== key) {
+      setSort(key);
+      setOrder("asc");
+    } else if (order === "asc") {
+      setOrder("desc");
+    } else {
+      setSort("");
+      setOrder("asc");
+    }
+  }
+
+  useEffect(() => {
+    api.listCategories().then((r) => setCategories(r.items)).catch(() => {});
+  }, []);
+
+  function toggle(id: string) {
+    setSelected((prev) => {
+      const next = new Set(prev);
+      if (next.has(id)) next.delete(id);
+      else next.add(id);
+      return next;
+    });
+  }
+
+  function toggleAll() {
+    setSelected((prev) =>
+      prev.size === rows.length ? new Set() : new Set(rows.map((r) => r.id)),
+    );
+  }
+
+  async function applyBulkStatus() {
+    if (!bulkStatus || selected.size === 0) return;
+    setBulkBusy(true);
+    setError("");
+    try {
+      await api.bulkProducts({
+        ids: [...selected],
+        action: "status",
+        status: bulkStatus,
+      });
+      setSelected(new Set());
+      setBulkStatus("");
+      reload();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "批量操作失败");
+    } finally {
+      setBulkBusy(false);
+    }
+  }
+
+  async function applyBulkCategory() {
+    if (selected.size === 0) return;
+    setBulkBusy(true);
+    setError("");
+    try {
+      await api.bulkProducts({
+        ids: [...selected],
+        action: "category",
+        category_id: bulkCategory || null,
+      });
+      setSelected(new Set());
+      setBulkCategory("");
+      reload();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "批量操作失败");
+    } finally {
+      setBulkBusy(false);
+    }
+  }
+
+  const pages = Math.max(1, Math.ceil(total / size));
+
+  return (
+    <div className="mx-auto max-w-6xl">
+      <div className="mb-4 flex items-center justify-between">
+        <h2 className="text-xl font-semibold text-gray-800">
+          商品档案 <span className="text-sm font-normal text-gray-400">共 {total} 条</span>
+        </h2>
+        <form
+          onSubmit={(e) => {
+            e.preventDefault();
+            setPage(1);
+            setQ(input.trim());
+          }}
+          className="flex items-center gap-2"
+        >
+          <div className="relative">
+            <Search className="absolute left-2 top-2.5 h-4 w-4 text-gray-400" />
+            <input
+              value={input}
+              onChange={(e) => setInput(e.target.value)}
+              placeholder="按名称 / 条码搜索"
+              className="w-64 rounded border border-gray-300 py-2 pl-8 pr-3 text-sm focus:border-emerald-500 focus:outline-none"
+            />
+          </div>
+          <button className="rounded bg-emerald-600 px-3 py-2 text-sm text-white hover:bg-emerald-700">
+            搜索
+          </button>
+          <button
+            type="button"
+            onClick={() => setCreating(true)}
+            className="flex items-center gap-1 rounded bg-gray-700 px-3 py-2 text-sm text-white hover:bg-gray-800"
+          >
+            <Plus className="h-4 w-4" /> 新建商品
+          </button>
+        </form>
+      </div>
+
+      {creating && (
+        <CreateProductModal
+          onClose={() => setCreating(false)}
+          onCreated={(id) => {
+            setCreating(false);
+            onOpen(id, [id]);
+          }}
+        />
+      )}
+
+      {error && (
+        <div className="mb-3 rounded bg-red-50 px-3 py-2 text-sm text-red-600">
+          {error}
+        </div>
+      )}
+
+      {selected.size > 0 && (
+        <div className="mb-3 flex flex-wrap items-center gap-3 rounded-lg border border-emerald-200 bg-emerald-50 px-4 py-3 text-sm">
+          <span className="font-medium text-emerald-800">
+            已选 {selected.size} 项
+          </span>
+          <div className="flex items-center gap-1.5">
+            <span className="text-gray-500">改状态</span>
+            <select
+              value={bulkStatus}
+              onChange={(e) => setBulkStatus(e.target.value)}
+              className="rounded border border-gray-300 bg-white px-2 py-1"
+            >
+              <option value="">选择</option>
+              <option value="active">在用</option>
+              <option value="deprecated">已停用</option>
+              <option value="merged">已合并</option>
+            </select>
+            <button
+              onClick={applyBulkStatus}
+              disabled={bulkBusy || !bulkStatus}
+              className="rounded bg-emerald-600 px-3 py-1 text-white hover:bg-emerald-700 disabled:opacity-50"
+            >
+              应用
+            </button>
+          </div>
+          <div className="flex items-center gap-1.5">
+            <span className="text-gray-500">改分类</span>
+            <select
+              value={bulkCategory}
+              onChange={(e) => setBulkCategory(e.target.value)}
+              className="rounded border border-gray-300 bg-white px-2 py-1"
+            >
+              <option value="">（未分类）</option>
+              {categories.map((c) => (
+                <option key={c.id} value={c.id}>
+                  {"\u00A0".repeat(c.level * 2)}
+                  {c.name_zh}
+                </option>
+              ))}
+            </select>
+            <button
+              onClick={applyBulkCategory}
+              disabled={bulkBusy}
+              className="rounded bg-emerald-600 px-3 py-1 text-white hover:bg-emerald-700 disabled:opacity-50"
+            >
+              应用
+            </button>
+          </div>
+          <button
+            onClick={() => setSelected(new Set())}
+            className="text-gray-500 hover:text-gray-700"
+          >
+            取消选择
+          </button>
+        </div>
+      )}
+
+      <div className="overflow-hidden rounded-lg border border-gray-200 bg-white">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-left text-xs uppercase text-gray-500">
+            <tr>
+              <th className="w-10 px-4 py-3">
+                <input
+                  type="checkbox"
+                  checked={rows.length > 0 && selected.size === rows.length}
+                  onChange={toggleAll}
+                  aria-label="全选"
+                />
+              </th>
+              <SortableTh label="名称" sortKey="name" sort={sort} order={order} onSort={toggleSort} />
+              <SortableTh label="品牌" sortKey="brand" sort={sort} order={order} onSort={toggleSort} />
+              <SortableTh label="条码" sortKey="gtin" sort={sort} order={order} onSort={toggleSort} />
+              <SortableTh label="品类" sortKey="category_path" sort={sort} order={order} onSort={toggleSort} />
+              <SortableTh label="状态" sortKey="status" sort={sort} order={order} onSort={toggleSort} />
+              <SortableTh label="质量分" sortKey="quality_score" sort={sort} order={order} onSort={toggleSort} />
+              <th className="px-4 py-3">缺失字段</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-100">
+            {loading ? (
+              <tr>
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                  加载中…
+                </td>
+              </tr>
+            ) : rows.length === 0 ? (
+              <tr>
+                <td colSpan={8} className="px-4 py-8 text-center text-gray-400">
+                  暂无数据
+                </td>
+              </tr>
+            ) : (
+              rows.map((r) => (
+                <tr
+                  key={r.id}
+                  onClick={() => onOpen(r.id, rows.map((x) => x.id))}
+                  className={`cursor-pointer hover:bg-emerald-50/50 ${
+                    selected.has(r.id) ? "bg-emerald-50/60" : ""
+                  }`}
+                >
+                  <td
+                    className="px-4 py-3"
+                    onClick={(e) => e.stopPropagation()}
+                  >
+                    <input
+                      type="checkbox"
+                      checked={selected.has(r.id)}
+                      onChange={() => toggle(r.id)}
+                      aria-label="选择"
+                    />
+                  </td>
+                  <td className="px-4 py-3 font-medium text-gray-800">{r.name}</td>
+                  <td className="px-4 py-3 text-gray-600">{r.brand || "—"}</td>
+                  <td className="px-4 py-3 font-mono text-xs text-gray-500">
+                    {r.gtin || "—"}
+                  </td>
+                  <td className="px-4 py-3 text-xs text-gray-500">
+                    {r.category_path || "—"}
+                  </td>
+                  <td className="px-4 py-3 text-gray-600">
+                    {STATUS_LABEL[r.status] || r.status}
+                  </td>
+                  <td className="px-4 py-3">
+                    <QualityBadge score={r.quality_score} />
+                  </td>
+                  <td className="px-4 py-3">
+                    {r.missing.length === 0 ? (
+                      <span className="text-xs text-emerald-600">完整</span>
+                    ) : (
+                      <span className="flex items-center gap-1 text-xs text-amber-600">
+                        <AlertCircle className="h-3.5 w-3.5" />
+                        {r.missing
+                          .map((f) => FIELD_LABELS[f] || f)
+                          .join("、")}
+                      </span>
+                    )}
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      <div className="mt-4 flex flex-wrap items-center justify-end gap-2 text-sm text-gray-600">
+        <div className="mr-auto flex items-center gap-1">
+          <span>每页</span>
+          <select
+            value={size}
+            onChange={(e) => {
+              setSize(Number(e.target.value));
+              setPage(1);
+            }}
+            className="rounded border border-gray-300 px-2 py-1"
+          >
+            {[20, 50, 100].map((n) => (
+              <option key={n} value={n}>
+                {n}
+              </option>
+            ))}
+          </select>
+          <span>条 · 共 {total} 条</span>
+        </div>
+        <button
+          disabled={page <= 1}
+          onClick={() => setPage((p) => p - 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          上一页
+        </button>
+        <span>
+          {page} / {pages}
+        </span>
+        <button
+          disabled={page >= pages}
+          onClick={() => setPage((p) => p + 1)}
+          className="rounded border border-gray-300 px-3 py-1 disabled:opacity-50"
+        >
+          下一页
+        </button>
+        <form
+          onSubmit={(e) => {
+            e.preventDefault();
+            const n = Number(jump);
+            if (Number.isFinite(n) && n >= 1) {
+              setPage(Math.min(Math.max(1, Math.trunc(n)), pages));
+              setJump("");
+            }
+          }}
+          className="flex items-center gap-1"
+        >
+          <span>跳至</span>
+          <input
+            value={jump}
+            onChange={(e) => setJump(e.target.value.replace(/[^0-9]/g, ""))}
+            placeholder={String(page)}
+            className="w-14 rounded border border-gray-300 px-2 py-1 text-center"
+            aria-label="跳转页码"
+          />
+          <button
+            type="submit"
+            className="rounded border border-gray-300 px-3 py-1 hover:bg-gray-50"
+          >
+            前往
+          </button>
+        </form>
+      </div>
+    </div>
+  );
+}
+
+function CreateProductModal({
+  onClose,
+  onCreated,
+}: {
+  onClose: () => void;
+  onCreated: (id: string) => void;
+}) {
+  const [name, setName] = useState("");
+  const [gtin, setGtin] = useState("");
+  const [brand, setBrand] = useState("");
+  const [categoryId, setCategoryId] = useState("");
+  const [brands, setBrands] = useState<Brand[]>([]);
+  const [categories, setCategories] = useState<Category[]>([]);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    api.listBrands().then((r) => setBrands(r.items)).catch(() => {});
+    api.listCategories().then((r) => setCategories(r.items)).catch(() => {});
+  }, []);
+
+  async function submit() {
+    if (!name.trim()) {
+      setError("名称不能为空");
+      return;
+    }
+    setBusy(true);
+    setError("");
+    try {
+      const created = await api.createProduct({
+        name: name.trim(),
+        gtin: gtin.trim() || null,
+        brand_name: brand.trim() || null,
+        category_id: categoryId || null,
+        status: "active",
+      });
+      onCreated(created.id);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "新建失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  return (
+    <div className="fixed inset-0 z-20 flex items-center justify-center bg-black/30">
+      <div className="w-full max-w-md rounded-lg bg-white p-6 shadow-lg">
+        <h3 className="mb-4 text-base font-semibold text-gray-800">新建商品</h3>
+        {error && (
+          <div className="mb-3 rounded bg-red-50 px-3 py-2 text-sm text-red-600">
+            {error}
+          </div>
+        )}
+        <div className="space-y-3">
+          <label className="block">
+            <span className="text-xs text-gray-500">名称 *</span>
+            <input
+              autoFocus
+              className="mt-1 w-full rounded border border-gray-300 px-3 py-2 text-sm"
+              value={name}
+              onChange={(e) => setName(e.target.value)}
+              placeholder="商品名称"
+            />
+          </label>
+          <label className="block">
+            <span className="text-xs text-gray-500">条码 (GTIN，可选)</span>
+            <input
+              className="mt-1 w-full rounded border border-gray-300 px-3 py-2 text-sm"
+              value={gtin}
+              onChange={(e) => setGtin(e.target.value)}
+              placeholder="8/12/13/14 位"
+            />
+          </label>
+          <label className="block">
+            <span className="text-xs text-gray-500">品牌（不存在将自动创建，可选）</span>
+            <input
+              list="create-brand-list"
+              className="mt-1 w-full rounded border border-gray-300 px-3 py-2 text-sm"
+              value={brand}
+              onChange={(e) => setBrand(e.target.value)}
+            />
+            <datalist id="create-brand-list">
+              {brands.map((b) => (
+                <option key={b.id} value={b.name} />
+              ))}
+            </datalist>
+          </label>
+          <label className="block">
+            <span className="text-xs text-gray-500">品类（可选）</span>
+            <select
+              className="mt-1 w-full rounded border border-gray-300 bg-white px-3 py-2 text-sm"
+              value={categoryId}
+              onChange={(e) => setCategoryId(e.target.value)}
+            >
+              <option value="">（未分类）</option>
+              {categories.map((c) => (
+                <option key={c.id} value={c.id}>
+                  {"\u00A0".repeat(c.level * 2)}
+                  {c.name_zh} ({c.path})
+                </option>
+              ))}
+            </select>
+          </label>
+        </div>
+        <p className="mt-3 text-xs text-gray-400">
+          创建后将进入详情页，可继续补全营养、图片、多条码等信息。
+        </p>
+        <div className="mt-4 flex justify-end gap-2">
+          <button
+            onClick={onClose}
+            className="rounded border px-4 py-2 text-sm text-gray-600"
+          >
+            取消
+          </button>
+          <button
+            onClick={submit}
+            disabled={busy}
+            className="rounded bg-emerald-600 px-4 py-2 text-sm text-white hover:bg-emerald-700 disabled:opacity-60"
+          >
+            {busy ? "创建中…" : "创建并编辑"}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}
@@ -0,0 +1,125 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { AdminStats } from "../types";
+import { BarChart3, Package, CheckCircle2, Tag, FolderTree, Inbox } from "lucide-react";
+
+const STATUS_LABEL: Record<string, string> = {
+  active: "在用",
+  merged: "已合并",
+  deprecated: "已停用",
+};
+
+function Card({
+  icon,
+  label,
+  value,
+  hint,
+}: {
+  icon: React.ReactNode;
+  label: string;
+  value: string | number;
+  hint?: string;
+}) {
+  return (
+    <div className="rounded-lg border bg-white p-5">
+      <div className="flex items-center gap-2 text-sm text-gray-500">
+        {icon}
+        {label}
+      </div>
+      <div className="mt-2 text-2xl font-semibold text-gray-800">{value}</div>
+      {hint && <div className="mt-1 text-xs text-gray-400">{hint}</div>}
+    </div>
+  );
+}
+
+export default function StatsPage() {
+  const [stats, setStats] = useState<AdminStats | null>(null);
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    api
+      .stats()
+      .then(setStats)
+      .catch((e) => setError(e instanceof ApiError ? e.message : "加载失败"));
+  }, []);
+
+  return (
+    <div className="mx-auto max-w-5xl">
+      <h2 className="mb-4 flex items-center gap-2 text-lg font-semibold text-gray-800">
+        <BarChart3 className="h-5 w-5 text-emerald-600" /> 数据概览
+      </h2>
+
+      {error && (
+        <div className="mb-3 rounded bg-red-50 px-4 py-2 text-sm text-red-700">{error}</div>
+      )}
+
+      {!stats ? (
+        <div className="text-sm text-gray-400">加载中…</div>
+      ) : (
+        <>
+          <div className="grid grid-cols-2 gap-4 md:grid-cols-3">
+            <Card
+              icon={<Package className="h-4 w-4" />}
+              label="商品总数"
+              value={stats.products.toLocaleString()}
+            />
+            <Card
+              icon={<CheckCircle2 className="h-4 w-4 text-emerald-600" />}
+              label="合格档案"
+              value={stats.qualified.toLocaleString()}
+              hint={`质量分 ≥ ${stats.min_score} 且在用`}
+            />
+            <Card
+              icon={<BarChart3 className="h-4 w-4" />}
+              label="平均质量分"
+              value={Math.round(stats.avg_quality * 100)}
+              hint="满分 100"
+            />
+            <Card
+              icon={<Tag className="h-4 w-4" />}
+              label="品牌数"
+              value={stats.brands.toLocaleString()}
+            />
+            <Card
+              icon={<FolderTree className="h-4 w-4" />}
+              label="分类数"
+              value={stats.categories.toLocaleString()}
+            />
+            <Card
+              icon={<Inbox className="h-4 w-4" />}
+              label="待审核投稿"
+              value={stats.pending_submissions.toLocaleString()}
+            />
+          </div>
+
+          <div className="mt-6 rounded-lg border bg-white p-5">
+            <h3 className="mb-3 text-sm font-medium text-gray-700">按状态分布</h3>
+            <div className="space-y-2">
+              {Object.keys(stats.by_status).length === 0 ? (
+                <div className="text-sm text-gray-400">暂无数据</div>
+              ) : (
+                Object.entries(stats.by_status).map(([st, n]) => {
+                  const pct = stats.products > 0 ? (n / stats.products) * 100 : 0;
+                  return (
+                    <div key={st} className="flex items-center gap-3 text-sm">
+                      <span className="w-16 text-gray-600">
+                        {STATUS_LABEL[st] || st}
+                      </span>
+                      <div className="h-3 flex-1 overflow-hidden rounded bg-gray-100">
+                        <div
+                          className="h-full bg-emerald-500"
+                          style={{ width: `${pct}%` }}
+                        />
+                      </div>
+                      <span className="w-12 text-right text-gray-500">{n}</span>
+                    </div>
+                  );
+                })
+              )}
+            </div>
+          </div>
+        </>
+      )}
+    </div>
+  );
+}
@@ -0,0 +1,314 @@
+import { useEffect, useState } from "react";
+import { api, ApiError } from "../api";
+import type { SubmissionDetail, SubmissionRow } from "../types";
+import { FIELD_LABELS } from "../types";
+import { ArrowLeft, Check, X } from "lucide-react";
+
+const STATUS_TABS = [
+  { key: "pending", label: "待审核" },
+  { key: "approved", label: "已通过" },
+  { key: "rejected", label: "已驳回" },
+];
+
+const STATUS_BADGE: Record<string, string> = {
+  pending: "bg-amber-50 text-amber-700",
+  approved: "bg-emerald-50 text-emerald-700",
+  rejected: "bg-red-50 text-red-700",
+};
+const STATUS_TEXT: Record<string, string> = {
+  pending: "待审核",
+  approved: "已通过",
+  rejected: "已驳回",
+};
+
+export default function SubmissionsPage({ onPending }: { onPending?: (n: number) => void }) {
+  const [tab, setTab] = useState("pending");
+  const [rows, setRows] = useState<SubmissionRow[]>([]);
+  const [openId, setOpenId] = useState<string | null>(null);
+  const [error, setError] = useState("");
+
+  async function load() {
+    setError("");
+    try {
+      const res = await api.listSubmissions(tab, 1, 50);
+      setRows(res.items);
+      onPending?.(res.pending);
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "加载失败");
+    }
+  }
+
+  useEffect(() => {
+    load();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [tab]);
+
+  if (openId) {
+    return (
+      <SubmissionView
+        id={openId}
+        onBack={() => {
+          setOpenId(null);
+          load();
+        }}
+      />
+    );
+  }
+
+  return (
+    <div className="mx-auto max-w-5xl">
+      <div className="flex items-center gap-2 mb-4">
+        {STATUS_TABS.map((t) => (
+          <button
+            key={t.key}
+            onClick={() => setTab(t.key)}
+            className={`px-3 py-1.5 rounded-md text-sm ${
+              tab === t.key
+                ? "bg-emerald-600 text-white"
+                : "bg-white border text-gray-600 hover:bg-gray-50"
+            }`}
+          >
+            {t.label}
+          </button>
+        ))}
+      </div>
+
+      {error && (
+        <div className="mb-3 bg-red-50 text-red-700 text-sm rounded px-4 py-2">{error}</div>
+      )}
+
+      <div className="bg-white border rounded-lg overflow-hidden">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50 text-gray-500 text-left">
+            <tr>
+              <th className="px-4 py-2 font-medium">商品名称</th>
+              <th className="px-4 py-2 font-medium">条码</th>
+              <th className="px-4 py-2 font-medium">投稿人</th>
+              <th className="px-4 py-2 font-medium">类型</th>
+              <th className="px-4 py-2 font-medium">提交时间</th>
+              <th className="px-4 py-2 font-medium">状态</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y">
+            {rows.length === 0 ? (
+              <tr>
+                <td colSpan={6} className="px-4 py-8 text-center text-gray-400">
+                  暂无投稿
+                </td>
+              </tr>
+            ) : (
+              rows.map((r) => (
+                <tr
+                  key={r.id}
+                  onClick={() => setOpenId(r.id)}
+                  className="cursor-pointer hover:bg-gray-50"
+                >
+                  <td className="px-4 py-2 text-gray-800">{r.name}</td>
+                  <td className="px-4 py-2 text-gray-500">{r.gtin || "—"}</td>
+                  <td className="px-4 py-2 text-gray-500">{r.submitter_name || "匿名"}</td>
+                  <td className="px-4 py-2">
+                    <span className="text-xs text-gray-500">
+                      {r.matched ? "补全已有商品" : "新建商品"}
+                    </span>
+                  </td>
+                  <td className="px-4 py-2 text-gray-500">
+                    {new Date(r.created_at).toLocaleString()}
+                  </td>
+                  <td className="px-4 py-2">
+                    <span className={`text-xs rounded px-2 py-0.5 ${STATUS_BADGE[r.status]}`}>
+                      {STATUS_TEXT[r.status]}
+                    </span>
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+    </div>
+  );
+}
+
+function Field({ label, value }: { label: string; value: React.ReactNode }) {
+  if (value === null || value === undefined || value === "") return null;
+  return (
+    <div className="flex py-1.5 text-sm">
+      <div className="w-28 shrink-0 text-gray-400">{label}</div>
+      <div className="text-gray-800 break-all">{value}</div>
+    </div>
+  );
+}
+
+function SubmissionView({ id, onBack }: { id: string; onBack: () => void }) {
+  const [d, setD] = useState<SubmissionDetail | null>(null);
+  const [error, setError] = useState("");
+  const [busy, setBusy] = useState(false);
+  const [rejecting, setRejecting] = useState(false);
+  const [reason, setReason] = useState("");
+
+  useEffect(() => {
+    api.getSubmission(id).then(setD).catch((e) => setError(e.message));
+  }, [id]);
+
+  async function approve() {
+    if (!confirm("确认通过该投稿？将写入正式商品库并记录来源 community。")) return;
+    setBusy(true);
+    setError("");
+    try {
+      await api.approveSubmission(id);
+      onBack();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "操作失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  async function reject() {
+    setBusy(true);
+    setError("");
+    try {
+      await api.rejectSubmission(id, reason.trim());
+      onBack();
+    } catch (e) {
+      setError(e instanceof ApiError ? e.message : "操作失败");
+    } finally {
+      setBusy(false);
+    }
+  }
+
+  if (error && !d) {
+    return (
+      <div>
+        <button onClick={onBack} className="text-sm text-gray-500 flex items-center gap-1 mb-4">
+          <ArrowLeft className="h-4 w-4" /> 返回
+        </button>
+        <div className="bg-red-50 text-red-700 text-sm rounded px-4 py-3">{error}</div>
+      </div>
+    );
+  }
+  if (!d) return <div className="text-gray-400">加载中…</div>;
+
+  const p = d.payload;
+  const nutri = Object.entries(p.nutriments || {});
+
+  return (
+    <div className="mx-auto max-w-3xl">
+      <button onClick={onBack} className="text-sm text-gray-500 flex items-center gap-1 mb-4">
+        <ArrowLeft className="h-4 w-4" /> 返回投稿队列
+      </button>
+
+      <div className="flex items-center justify-between">
+        <h2 className="text-lg font-semibold text-gray-800">{p.name}</h2>
+        <span className={`text-xs rounded px-2 py-0.5 ${STATUS_BADGE[d.status]}`}>
+          {STATUS_TEXT[d.status]}
+        </span>
+      </div>
+
+      {error && <div className="mt-3 bg-red-50 text-red-700 text-sm rounded px-4 py-2">{error}</div>}
+
+      {d.target_product_id && (
+        <div className="mt-3 text-sm bg-blue-50 text-blue-700 rounded px-4 py-2">
+          该条码已存在商品，通过后将<b>补全已有商品</b>（仅覆盖本次提供的字段）。
+        </div>
+      )}
+
+      <div className="bg-white border rounded-lg p-5 mt-4">
+        <h3 className="font-medium text-gray-700 mb-2">投稿内容</h3>
+        <Field label="商品名称" value={p.name} />
+        <Field label="条码" value={p.gtin} />
+        <Field label="品牌" value={p.brand_name} />
+        <Field
+          label="净含量"
+          value={p.net_content_value != null ? `${p.net_content_value} ${p.net_content_unit || ""}` : null}
+        />
+        <Field label="产地" value={p.country_of_origin} />
+        <Field label="配料" value={p.ingredients_text} />
+        {nutri.length > 0 && (
+          <Field
+            label="营养成分"
+            value={
+              <span>
+                {p.nutrition_basis ? `(${p.nutrition_basis}) ` : ""}
+                {nutri.map(([k, v]) => `${FIELD_LABELS[k] || k}:${v}`).join("，")}
+              </span>
+            }
+          />
+        )}
+        {p.images && p.images.length > 0 && (
+          <Field
+            label="图片"
+            value={
+              <div className="flex flex-wrap gap-2">
+                {p.images.map((im, i) => (
+                  <a key={i} href={im.url} target="_blank" rel="noreferrer">
+                    <img src={im.url} alt="" className="h-20 w-20 object-cover rounded border" />
+                  </a>
+                ))}
+              </div>
+            }
+          />
+        )}
+      </div>
+
+      <div className="bg-white border rounded-lg p-5 mt-4">
+        <h3 className="font-medium text-gray-700 mb-2">投稿人 / 备注</h3>
+        <Field label="称呼" value={p.submitter_name || "匿名"} />
+        <Field label="联系方式" value={p.submitter_contact} />
+        <Field label="备注" value={p.note} />
+        <Field label="提交时间" value={new Date(d.created_at).toLocaleString()} />
+        {d.reviewed_by && <Field label="审核人" value={d.reviewed_by} />}
+        {d.review_note && <Field label="驳回原因" value={d.review_note} />}
+        {d.result_product_id && <Field label="收录商品ID" value={d.result_product_id} />}
+      </div>
+
+      {d.status === "pending" && (
+        <div className="mt-5">
+          {rejecting ? (
+            <div className="bg-white border rounded-lg p-4">
+              <label className="block text-xs text-gray-500 mb-1">驳回原因</label>
+              <input
+                className="w-full border rounded-md px-3 py-2 text-sm"
+                value={reason}
+                onChange={(e) => setReason(e.target.value)}
+                placeholder="例如：资料无法核实 / 重复投稿"
+              />
+              <div className="mt-3 flex gap-2">
+                <button
+                  onClick={reject}
+                  disabled={busy}
+                  className="px-4 py-2 rounded bg-red-600 text-white text-sm hover:bg-red-700 disabled:opacity-60"
+                >
+                  确认驳回
+                </button>
+                <button
+                  onClick={() => setRejecting(false)}
+                  className="px-4 py-2 rounded border text-sm text-gray-600"
+                >
+                  取消
+                </button>
+              </div>
+            </div>
+          ) : (
+            <div className="flex gap-3">
+              <button
+                onClick={approve}
+                disabled={busy}
+                className="px-5 py-2.5 rounded-lg bg-emerald-600 text-white font-medium hover:bg-emerald-700 disabled:opacity-60 flex items-center gap-1.5"
+              >
+                <Check className="h-4 w-4" /> 通过并收录
+              </button>
+              <button
+                onClick={() => setRejecting(true)}
+                disabled={busy}
+                className="px-5 py-2.5 rounded-lg border text-gray-700 font-medium hover:bg-gray-50 flex items-center gap-1.5"
+              >
+                <X className="h-4 w-4" /> 驳回
+              </button>
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
@@ -0,0 +1,16 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+html,
+body,
+#root {
+  height: 100%;
+}
+
+body {
+  margin: 0;
+  background: #f3f4f6;
+  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
+    Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
+}
@@ -0,0 +1,10 @@
+import React from "react";
+import ReactDOM from "react-dom/client";
+import App from "./App";
+import "./index.css";
+
+ReactDOM.createRoot(document.getElementById("root")!).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+);
@@ -0,0 +1,219 @@
+export interface ProductRow {
+  id: string;
+  gtin: string | null;
+  name: string;
+  brand: string | null;
+  category_path: string | null;
+  status: string;
+  quality_score: number;
+  missing: string[];
+  updated_at: string;
+}
+
+export interface Barcode {
+  id: string;
+  gtin: string;
+  gtin_type: string;
+  pack_level: string;
+  region: string | null;
+  is_primary: boolean;
+}
+
+export interface ProductImage {
+  id: string;
+  url: string;
+  kind: string;
+  license: string | null;
+}
+
+export interface MSRP {
+  id: string;
+  amount: number;
+  currency: string;
+  region: string;
+  effective_date: string | null;
+  source_url: string | null;
+  note: string | null;
+}
+
+export interface ProductDetail {
+  id: string;
+  gtin: string | null;
+  name: string;
+  brand_id: string | null;
+  brand: string | null;
+  category_id: string | null;
+  category_path: string | null;
+  archive_kind: string;
+  attributes: Record<string, unknown>;
+  net_content_value: number | null;
+  net_content_unit: string | null;
+  country_of_origin: string | null;
+  status: string;
+  quality_score: number;
+  ingredients_text: string | null;
+  allergens: string[];
+  additives: string[];
+  nutriments: Record<string, number> | null;
+  nutrition_basis: string | null;
+  serving_size: string | null;
+  nutri_score: string | null;
+  barcodes: Barcode[];
+  images: ProductImage[];
+  msrp: MSRP[];
+  missing: string[];
+  updated_at: string;
+}
+
+export interface Brand {
+  id: string;
+  name: string;
+  product_count: number;
+}
+
+export interface Category {
+  id: string;
+  name_zh: string;
+  name_en: string | null;
+  path: string;
+  level: number;
+  parent_id: string | null;
+  gpc_brick_code: string | null;
+  archive_kind: string;
+  product_count: number;
+}
+
+export interface KindField {
+  kind: string;
+  field_key: string;
+  group_label: string;
+  label_zh: string;
+  field_type: string;
+  unit: string | null;
+  options: string[];
+  placeholder: string | null;
+  sort_order: number;
+  qualified: boolean;
+}
+
+export interface CategoryInput {
+  name_zh: string;
+  name_en?: string | null;
+  slug?: string | null;
+  parent_id?: string | null;
+  gpc_brick_code?: string | null;
+}
+
+export interface AuditEntry {
+  id: string;
+  actor: string;
+  action: string;
+  fields: string[];
+  created_at: string;
+}
+
+export interface AuditLogRow {
+  id: string;
+  actor: string;
+  action: string;
+  entity: string;
+  entity_id: string | null;
+  fields: string[];
+  created_at: string;
+}
+
+export interface AdminStats {
+  products: number;
+  qualified: number;
+  min_score: number;
+  by_status: Record<string, number>;
+  brands: number;
+  categories: number;
+  pending_submissions: number;
+  avg_quality: number;
+}
+
+export interface SubmissionRow {
+  id: string;
+  gtin: string | null;
+  name: string;
+  status: string;
+  submitter_name: string | null;
+  matched: boolean;
+  created_at: string;
+  reviewed_at: string | null;
+}
+
+export interface SubmissionImage {
+  url: string;
+  kind: string;
+}
+
+export interface SubmissionPayload {
+  gtin: string | null;
+  name: string;
+  brand_name: string | null;
+  category_id: string | null;
+  net_content_value: number | null;
+  net_content_unit: string | null;
+  country_of_origin: string | null;
+  ingredients_text: string | null;
+  nutriments: Record<string, number> | null;
+  nutrition_basis: string | null;
+  serving_size: string | null;
+  nutri_score: string | null;
+  images: SubmissionImage[] | null;
+  submitter_name: string | null;
+  submitter_contact: string | null;
+  note: string | null;
+}
+
+export interface SubmissionDetail {
+  id: string;
+  status: string;
+  gtin: string | null;
+  name: string;
+  submitter_name: string | null;
+  submitter_contact: string | null;
+  note: string | null;
+  review_note: string | null;
+  reviewed_by: string | null;
+  reviewed_at: string | null;
+  created_at: string;
+  target_product_id: string | null;
+  result_product_id: string | null;
+  payload: SubmissionPayload;
+  existing_product?: ProductDetail;
+}
+
+export interface ApiKeyUsage {
+  total: number;
+  today: number;
+  last_used_at?: number | null;
+}
+
+export interface ApiKey {
+  id: string;
+  name: string;
+  key_prefix: string;
+  owner_email: string | null;
+  tier: string;
+  rate_limit_per_min: number;
+  quota_total: number;
+  revoked_at: string | null;
+  created_by: string | null;
+  created_at: string;
+  usage: ApiKeyUsage;
+}
+
+export const FIELD_LABELS: Record<string, string> = {
+  name: "名称",
+  gtin: "条码",
+  brand: "品牌",
+  category: "品类",
+  net_content: "净含量",
+  country_of_origin: "产地",
+  nutriments: "营养成分",
+  ingredients: "配料",
+  image: "图片",
+};
@@ -0,0 +1 @@
+/// <reference types="vite/client" />
@@ -0,0 +1,6 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: ["./index.html", "./src/**/*.{ts,tsx}"],
+  theme: { extend: {} },
+  plugins: [],
+};
@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "useDefineForClassFields": true,
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx",
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}
@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "skipLibCheck": true,
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "allowSyntheticDefaultImports": true,
+    "strict": true
+  },
+  "include": ["vite.config.ts"]
+}
@@ -0,0 +1,9 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+// Served under /ping by the admin Go binary; base must match the nginx prefix.
+export default defineConfig({
+  base: "/ping/",
+  plugins: [react()],
+  build: { outDir: "dist", emptyOutDir: true },
+});
@@ -0,0 +1,29 @@
+# Admin console image: builds the SPA (node), embeds it into the Go admin
+# binary, and ships a static scratch runtime. Build context is the repo root.
+
+# Stage 1: build the admin SPA.
+FROM node:22-alpine AS web
+WORKDIR /web
+ENV npm_config_registry=https://registry.npmmirror.com
+COPY admin-frontend/package.json admin-frontend/package-lock.json* ./
+RUN npm ci || npm install
+COPY admin-frontend/ ./
+RUN npm run build
+
+# Stage 2: build the Go admin binary with the SPA embedded.
+FROM golang:1.23-alpine AS build
+ENV GOPROXY=https://goproxy.cn,direct
+WORKDIR /src
+COPY api/go.mod api/go.sum ./
+RUN go mod download
+COPY api/ ./
+RUN rm -rf internal/adminweb/dist && mkdir -p internal/adminweb/dist
+COPY --from=web /web/dist/ internal/adminweb/dist/
+RUN CGO_ENABLED=0 go build -o /out/admin ./cmd/admin
+
+# Stage 3: minimal runtime.
+FROM scratch
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /out/admin /admin
+EXPOSE 8080
+ENTRYPOINT ["/admin"]
@@ -1,14 +1,29 @@
-# Build stage
+# Public API image: builds the public SPA (homepage + search + contribute),
+# embeds it into the Go read-only server binary, and ships a static scratch
+# runtime (used where gcr.io/distroless is not reachable). Build context is the
+# repo root.
+
+# Stage 1: build the public SPA.
+FROM node:22-alpine AS web
+WORKDIR /web
+ENV npm_config_registry=https://registry.npmmirror.com
+COPY public-frontend/package.json public-frontend/package-lock.json* ./
+RUN npm ci || npm install
+COPY public-frontend/ ./
+RUN npm run build
+
+# Stage 2: build the Go server binary with the SPA embedded.
 FROM golang:1.23-alpine AS build
 ENV GOPROXY=https://goproxy.cn,direct
 WORKDIR /src
-COPY go.mod go.sum ./
+COPY api/go.mod api/go.sum ./
 RUN go mod download
-COPY . .
+COPY api/ ./
+RUN rm -rf internal/publicweb/dist && mkdir -p internal/publicweb/dist
+COPY --from=web /web/dist/ internal/publicweb/dist/
 RUN CGO_ENABLED=0 go build -o /out/server ./cmd/server

-# Runtime stage: scratch + ca-certs copied from the build image.
-# Used for deployments where gcr.io/distroless is not reachable.
+# Stage 3: minimal runtime.
 FROM scratch
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=build /out/server /server
@@ -0,0 +1,86 @@
+// Command admin starts the OpenGoods admin console (authenticated write API +
+// embedded SPA), served under a base path (default /ping).
+package main
+
+import (
+	"context"
+	"crypto/rand"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/baicai2026-baicai/goods/api/internal/adminhandler"
+	"github.com/baicai2026-baicai/goods/api/internal/adminstore"
+	"github.com/baicai2026-baicai/goods/api/internal/adminweb"
+	"github.com/baicai2026-baicai/goods/api/internal/auth"
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
+)
+
+func getenv(key, fallback string) string {
+	if v, ok := os.LookupEnv(key); ok && v != "" {
+		return v
+	}
+	return fallback
+}
+
+func main() {
+	addr := getenv("GOODS_ADMIN_ADDR", ":8080")
+	dbURL := getenv("OPENGOODS_DATABASE_URL", "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable")
+	basePath := getenv("GOODS_ADMIN_BASE_PATH", "/ping")
+	username := getenv("GOODS_ADMIN_USER", "admin")
+
+	// Password: prefer a bcrypt hash; otherwise hash a plaintext password.
+	var passwordHash []byte
+	if h := os.Getenv("GOODS_ADMIN_PASSWORD_HASH"); h != "" {
+		passwordHash = []byte(h)
+	} else if p := os.Getenv("GOODS_ADMIN_PASSWORD"); p != "" {
+		hashed, err := bcrypt.GenerateFromPassword([]byte(p), bcrypt.DefaultCost)
+		if err != nil {
+			log.Fatalf("failed to hash admin password: %v", err)
+		}
+		passwordHash = hashed
+	} else {
+		log.Fatal("set GOODS_ADMIN_PASSWORD or GOODS_ADMIN_PASSWORD_HASH")
+	}
+
+	secret := []byte(os.Getenv("GOODS_ADMIN_JWT_SECRET"))
+	if len(secret) == 0 {
+		secret = make([]byte, 32)
+		if _, err := rand.Read(secret); err != nil {
+			log.Fatalf("failed to generate jwt secret: %v", err)
+		}
+		log.Print("warning: GOODS_ADMIN_JWT_SECRET not set; using a random secret (tokens invalidate on restart)")
+	}
+
+	ctx := context.Background()
+	pool, err := pgxpool.New(ctx, dbURL)
+	if err != nil {
+		log.Fatalf("failed to create db pool: %v", err)
+	}
+	defer pool.Close()
+
+	pingCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
+	defer cancel()
+	if err := pool.Ping(pingCtx); err != nil {
+		log.Printf("warning: database not reachable at startup: %v", err)
+	}
+
+	authn := auth.New(username, passwordHash, secret, 12*time.Hour)
+	usage := ratelimit.New(getenv("OPENGOODS_REDIS_URL", "redis://localhost:6379/0"))
+	h := adminhandler.New(adminstore.New(pool), authn, basePath, adminweb.Dist()).
+		WithUsage(usage)
+
+	srv := &http.Server{
+		Addr:              addr,
+		Handler:           h.Router(),
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+	log.Printf("OpenGoods admin console listening on %s (base path %s)", addr, basePath)
+	if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+		log.Fatalf("server error: %v", err)
+	}
+}
@@ -11,6 +11,8 @@ import (

 	"github.com/baicai2026-baicai/goods/api/internal/config"
 	"github.com/baicai2026-baicai/goods/api/internal/handler"
+	"github.com/baicai2026-baicai/goods/api/internal/publicweb"
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
 	"github.com/baicai2026-baicai/goods/api/internal/store"
 )

@@ -30,7 +32,13 @@ func main() {
 		log.Printf("warning: database not reachable at startup: %v", err)
 	}

-	h := handler.New(store.New(pool))
+	limiter := ratelimit.New(cfg.RedisURL)
+	if !limiter.Enabled() {
+		log.Print("warning: Redis not configured; public API rate limiting disabled")
+	}
+	h := handler.New(store.New(pool), publicweb.Dist()).
+		WithRateLimit(limiter, cfg.AnonRateLimitPerMin).
+		WithQuotas(cfg.AnonTotalQuota, cfg.RegisteredRateLimitPerMin, cfg.RegisteredQuotaTotal)

 	srv := &http.Server{
 		Addr:              cfg.Addr,
@@ -5,13 +5,17 @@ go 1.23.4
 require (
 	github.com/go-chi/chi/v5 v5.1.0
 	github.com/jackc/pgx/v5 v5.7.2
+	github.com/redis/go-redis/v9 v9.18.0
+	golang.org/x/crypto v0.31.0
 )

 require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
-	golang.org/x/crypto v0.31.0 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
 	golang.org/x/sync v0.10.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
 )
@@ -1,6 +1,14 @@
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/go-chi/chi/v5 v5.1.0 h1:acVI1TYaD+hhedDJ3r54HyA6sExp3HfXq7QWEEY/xMw=
 github.com/go-chi/chi/v5 v5.1.0/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
@@ -11,13 +19,21 @@ github.com/jackc/pgx/v5 v5.7.2 h1:mLoDLV6sonKlvjIEsV56SkWNCnuNv531l94GaIzO+XI=
 github.com/jackc/pgx/v5 v5.7.2/go.mod h1:ncY89UGWxg82EykZUwSpUKEfccBGGYq1xjrOpsbsfGQ=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/redis/go-redis/v9 v9.18.0 h1:pMkxYPkEbMPwRdenAzUNyFNrDgHx9U+DrBabWNfSRQs=
+github.com/redis/go-redis/v9 v9.18.0/go.mod h1:k3ufPphLU5YXwNTUcCRXGxUoF1fqxnhFQmscfkCoDA0=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
+github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
+go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
+go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 golang.org/x/crypto v0.31.0 h1:ihbySMvVjLAeSH1IbfcRTkD/iNscyz8rGzjF/E5hV6U=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
 golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=
@@ -0,0 +1,70 @@
+package adminhandler
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+
+	"github.com/go-chi/chi/v5"
+
+	"github.com/baicai2026-baicai/goods/api/internal/adminstore"
+	"github.com/baicai2026-baicai/goods/api/internal/auth"
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
+)
+
+// apiKeyView is an issued key plus its usage counters.
+type apiKeyView struct {
+	adminstore.APIKeyRow
+	Usage ratelimit.UsageStat `json:"usage"`
+}
+
+// ListAPIKeys returns all issued keys with usage stats merged in.
+func (h *Handler) ListAPIKeys(w http.ResponseWriter, r *http.Request) {
+	keys, err := h.store.ListAPIKeys(r.Context())
+	if h.handleErr(w, err) {
+		return
+	}
+	views := make([]apiKeyView, 0, len(keys))
+	for _, k := range keys {
+		v := apiKeyView{APIKeyRow: k}
+		if h.usage != nil {
+			v.Usage = h.usage.Usage(r.Context(), k.ID)
+		}
+		views = append(views, v)
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": views})
+}
+
+// CreateAPIKey issues a new key and returns its plaintext exactly once.
+func (h *Handler) CreateAPIKey(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.APIKeyInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "名称不能为空")
+		return
+	}
+	if in.Tier != "" && in.Tier != "free" && in.Tier != "registered" && in.Tier != "partner" && in.Tier != "internal" {
+		writeError(w, http.StatusBadRequest, "bad_request", "tier 取值无效")
+		return
+	}
+	plaintext, row, err := h.store.CreateAPIKey(r.Context(), in, auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, map[string]any{
+		"key":     plaintext,
+		"item":    row,
+		"warning": "请立即复制保存此密钥，它只显示这一次，无法再次查看。",
+	})
+}
+
+// RevokeAPIKey disables a key. Subsequent requests with it are rejected.
+func (h *Handler) RevokeAPIKey(w http.ResponseWriter, r *http.Request) {
+	if err := h.store.RevokeAPIKey(r.Context(), chi.URLParam(r, "id")); h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "revoked"})
+}
@@ -0,0 +1,748 @@
+// Package adminhandler wires up the authenticated admin console: a JSON write
+// API mounted under a base path (default /ping) plus the embedded SPA.
+package adminhandler
+
+import (
+	"encoding/json"
+	"errors"
+	"io/fs"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+
+	"github.com/baicai2026-baicai/goods/api/internal/adminstore"
+	"github.com/baicai2026-baicai/goods/api/internal/auth"
+	"github.com/baicai2026-baicai/goods/api/internal/gtin"
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
+)
+
+// Handler holds the admin dependencies.
+type Handler struct {
+	store       *adminstore.Store
+	authn       *auth.Authenticator
+	basePath    string
+	spa         fs.FS
+	submitLimit *rateLimiter
+	usage       *ratelimit.Limiter
+}
+
+// New constructs an admin Handler. basePath is e.g. "/ping" (no trailing slash).
+func New(store *adminstore.Store, authn *auth.Authenticator, basePath string, spa fs.FS) *Handler {
+	basePath = "/" + strings.Trim(basePath, "/")
+	return &Handler{
+		store:       store,
+		authn:       authn,
+		basePath:    basePath,
+		spa:         spa,
+		submitLimit: newRateLimiter(5, 10*time.Minute),
+	}
+}
+
+// WithUsage attaches a Redis-backed limiter used to read per-key usage counters
+// for the API-key management view. Optional; without it usage shows as zero.
+func (h *Handler) WithUsage(l *ratelimit.Limiter) *Handler {
+	h.usage = l
+	return h
+}
+
+// Router builds the HTTP handler.
+func (h *Handler) Router() http.Handler {
+	r := chi.NewRouter()
+	r.Use(middleware.RequestID)
+	r.Use(middleware.RealIP)
+	r.Use(middleware.Recoverer)
+
+	r.Route(h.basePath, func(r chi.Router) {
+		r.Get("/healthz", func(w http.ResponseWriter, _ *http.Request) {
+			writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+		})
+		r.Post("/api/login", h.Login)
+
+		r.Group(func(r chi.Router) {
+			r.Use(h.authn.Middleware)
+			r.Get("/api/me", h.Me)
+			r.Get("/api/stats", h.Stats)
+			r.Get("/api/audit", h.ListAllAudit)
+			r.Get("/api/products", h.ListProducts)
+			r.Post("/api/products", h.CreateProduct)
+			r.Post("/api/products/bulk", h.BulkProducts)
+			r.Get("/api/products/{id}", h.GetProduct)
+			r.Put("/api/products/{id}", h.UpdateProduct)
+			r.Get("/api/products/{id}/audit", h.ListAudit)
+			r.Post("/api/products/{id}/images", h.AddImage)
+			r.Delete("/api/products/{id}/images/{imageID}", h.DeleteImage)
+			r.Post("/api/products/{id}/msrp", h.AddMSRP)
+			r.Delete("/api/products/{id}/msrp/{msrpID}", h.DeleteMSRP)
+			r.Post("/api/products/{id}/barcodes", h.AddBarcode)
+			r.Delete("/api/products/{id}/barcodes/{barcodeID}", h.DeleteBarcode)
+			r.Post("/api/products/{id}/barcodes/{barcodeID}/primary", h.SetPrimaryBarcode)
+			r.Get("/api/brands", h.ListBrands)
+			r.Post("/api/brands", h.CreateBrand)
+			r.Put("/api/brands/{id}", h.UpdateBrand)
+			r.Post("/api/brands/{id}/merge", h.MergeBrands)
+			r.Delete("/api/brands/{id}", h.DeleteBrand)
+			r.Get("/api/kind-fields", h.ListKindFields)
+			r.Get("/api/categories", h.ListCategories)
+			r.Post("/api/categories", h.CreateCategory)
+			r.Put("/api/categories/{id}", h.UpdateCategory)
+			r.Delete("/api/categories/{id}", h.DeleteCategory)
+
+			r.Get("/api/submissions", h.ListSubmissions)
+			r.Get("/api/submissions/{id}", h.GetSubmission)
+			r.Post("/api/submissions/{id}/approve", h.ApproveSubmission)
+			r.Post("/api/submissions/{id}/reject", h.RejectSubmission)
+
+			r.Get("/api/keys", h.ListAPIKeys)
+			r.Post("/api/keys", h.CreateAPIKey)
+			r.Delete("/api/keys/{id}", h.RevokeAPIKey)
+		})
+
+		r.Handle("/*", http.HandlerFunc(h.serveSPA))
+	})
+
+	// Public, unauthenticated contribution endpoint (proxied at /api/public/*).
+	// Submissions enter a moderation queue and never touch products until an
+	// admin approves them.
+	r.Post("/api/public/submissions", h.CreateSubmission)
+
+	return r
+}
+
+func (h *Handler) serveSPA(w http.ResponseWriter, r *http.Request) {
+	rel := strings.TrimPrefix(r.URL.Path, h.basePath)
+	rel = strings.TrimPrefix(rel, "/")
+	if rel == "" {
+		rel = "index.html"
+	}
+	if f, err := h.spa.Open(rel); err == nil {
+		f.Close()
+		http.StripPrefix(h.basePath+"/", http.FileServer(http.FS(h.spa))).ServeHTTP(w, r)
+		return
+	}
+	// SPA fallback: serve index.html for client-side routes.
+	index, err := h.spa.Open("index.html")
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	defer index.Close()
+	data, _ := fs.ReadFile(h.spa, "index.html")
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	_, _ = w.Write(data)
+}
+
+// ---------- auth ----------
+
+// Login authenticates and returns a bearer token.
+func (h *Handler) Login(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		Username string `json:"username"`
+		Password string `json:"password"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	token, err := h.authn.Login(body.Username, body.Password)
+	if err != nil {
+		writeError(w, http.StatusUnauthorized, "unauthorized", "用户名或密码错误")
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"token": token, "username": body.Username})
+}
+
+// Me returns the current authenticated user.
+func (h *Handler) Me(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, map[string]string{"username": auth.UserFrom(r.Context())})
+}
+
+// ---------- products ----------
+
+// ListProducts returns a paginated product list.
+func (h *Handler) ListProducts(w http.ResponseWriter, r *http.Request) {
+	q := r.URL.Query().Get("q")
+	sort := r.URL.Query().Get("sort")
+	order := r.URL.Query().Get("order")
+	page, size := pageParams(r)
+	items, total, err := h.store.ListProducts(r.Context(), q, sort, order, size, (page-1)*size)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{
+		"items": items, "page": page, "size": size, "total": total,
+		"completeness_fields": adminstore.CompletenessFields,
+	})
+}
+
+// GetProduct returns full editable detail.
+func (h *Handler) GetProduct(w http.ResponseWriter, r *http.Request) {
+	d, err := h.store.GetProduct(r.Context(), chi.URLParam(r, "id"))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, d)
+}
+
+// CreateProduct adds a new product with core fields; the rest is filled in via
+// the detail editor.
+func (h *Handler) CreateProduct(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.ProductInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "名称不能为空")
+		return
+	}
+	d, err := h.store.CreateProduct(r.Context(), auth.UserFrom(r.Context()), in)
+	if errors.Is(err, adminstore.ErrDuplicateGTIN) {
+		writeError(w, http.StatusConflict, "duplicate_gtin", "该条码(GTIN)已被其它商品使用")
+		return
+	}
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, d)
+}
+
+// Stats returns the dashboard overview counters.
+func (h *Handler) Stats(w http.ResponseWriter, r *http.Request) {
+	st, err := h.store.Stats(r.Context())
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, st)
+}
+
+// ListAllAudit returns a page of the global operations audit log.
+func (h *Handler) ListAllAudit(w http.ResponseWriter, r *http.Request) {
+	page, size := pageParams(r)
+	items, total, err := h.store.ListAllAudit(r.Context(), size, (page-1)*size)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{
+		"items": items, "page": page, "size": size, "total": total,
+	})
+}
+
+type bulkInput struct {
+	IDs        []string `json:"ids"`
+	Action     string   `json:"action"`
+	Status     string   `json:"status"`
+	CategoryID *string  `json:"category_id"`
+}
+
+// BulkProducts applies a status or category change to many products at once.
+func (h *Handler) BulkProducts(w http.ResponseWriter, r *http.Request) {
+	var in bulkInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if len(in.IDs) == 0 {
+		writeError(w, http.StatusBadRequest, "bad_request", "未选择任何商品")
+		return
+	}
+	actor := auth.UserFrom(r.Context())
+	var (
+		affected int
+		err      error
+	)
+	switch in.Action {
+	case "status":
+		affected, err = h.store.BulkSetStatus(r.Context(), actor, in.IDs, in.Status)
+	case "category":
+		affected, err = h.store.BulkSetCategory(r.Context(), actor, in.IDs, in.CategoryID)
+	default:
+		writeError(w, http.StatusBadRequest, "bad_request", "未知的批量操作")
+		return
+	}
+	switch {
+	case errors.Is(err, adminstore.ErrInvalidStatus):
+		writeError(w, http.StatusBadRequest, "invalid_status", "无效的状态值")
+		return
+	case errors.Is(err, adminstore.ErrInvalidParent):
+		writeError(w, http.StatusBadRequest, "invalid_parent", "目标分类无效")
+		return
+	case errors.Is(err, adminstore.ErrNoTargets):
+		writeError(w, http.StatusBadRequest, "bad_request", "未选择任何商品")
+		return
+	}
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"status": "ok", "affected": affected})
+}
+
+// UpdateProduct applies an edit.
+func (h *Handler) UpdateProduct(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.ProductInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "名称不能为空")
+		return
+	}
+	d, err := h.store.UpdateProduct(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), in)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, d)
+}
+
+// ListAudit returns audit history for a product.
+func (h *Handler) ListAudit(w http.ResponseWriter, r *http.Request) {
+	items, err := h.store.ListAudit(r.Context(), chi.URLParam(r, "id"), 100)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": items})
+}
+
+// AddImage adds an image URL.
+func (h *Handler) AddImage(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		URL  string `json:"url"`
+		Kind string `json:"kind"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil || strings.TrimSpace(body.URL) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "图片 URL 不能为空")
+		return
+	}
+	im, err := h.store.AddImage(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), body.URL, body.Kind)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, im)
+}
+
+// DeleteImage removes an image.
+func (h *Handler) DeleteImage(w http.ResponseWriter, r *http.Request) {
+	err := h.store.DeleteImage(r.Context(), chi.URLParam(r, "id"), chi.URLParam(r, "imageID"), auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// AddMSRP adds a suggested-retail-price snapshot.
+func (h *Handler) AddMSRP(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.MSRPInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	m, err := h.store.AddMSRP(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), in)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, m)
+}
+
+// DeleteMSRP removes an MSRP snapshot.
+func (h *Handler) DeleteMSRP(w http.ResponseWriter, r *http.Request) {
+	err := h.store.DeleteMSRP(r.Context(), chi.URLParam(r, "id"), chi.URLParam(r, "msrpID"), auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// ---------- barcodes ----------
+
+// AddBarcode validates and attaches a barcode to a product. A code already
+// owned by another product yields 409 with the conflicting product so the
+// operator can de-duplicate; an invalid GTIN yields 400.
+func (h *Handler) AddBarcode(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.BarcodeInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	b, err := h.store.AddBarcode(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), in)
+	if h.handleBarcodeErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, b)
+}
+
+// DeleteBarcode removes a barcode; a primary one is replaced automatically.
+func (h *Handler) DeleteBarcode(w http.ResponseWriter, r *http.Request) {
+	err := h.store.DeleteBarcode(r.Context(), chi.URLParam(r, "id"), chi.URLParam(r, "barcodeID"), auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// SetPrimaryBarcode marks one barcode primary and mirrors it to product.gtin.
+func (h *Handler) SetPrimaryBarcode(w http.ResponseWriter, r *http.Request) {
+	b, err := h.store.SetPrimaryBarcode(r.Context(), chi.URLParam(r, "id"), chi.URLParam(r, "barcodeID"), auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, b)
+}
+
+// handleBarcodeErr maps barcode-specific errors (GTIN validation, ownership
+// conflict) to client-facing statuses, falling back to handleErr otherwise.
+func (h *Handler) handleBarcodeErr(w http.ResponseWriter, err error) bool {
+	if err == nil {
+		return false
+	}
+	var conflict *adminstore.ConflictError
+	if errors.As(err, &conflict) {
+		writeJSON(w, http.StatusConflict, map[string]any{
+			"error": map[string]string{"code": "barcode_conflict", "message": err.Error()},
+			"conflict": map[string]string{
+				"gtin":         conflict.GTIN,
+				"product_id":   conflict.ProductID,
+				"product_name": conflict.ProductName,
+			},
+		})
+		return true
+	}
+	if errors.Is(err, gtin.ErrEmpty) || errors.Is(err, gtin.ErrFormat) ||
+		errors.Is(err, gtin.ErrCheck) || errors.Is(err, gtin.ErrRestricted) {
+		writeError(w, http.StatusBadRequest, "invalid_gtin", err.Error())
+		return true
+	}
+	return h.handleErr(w, err)
+}
+
+// ListBrands returns brand options.
+func (h *Handler) ListBrands(w http.ResponseWriter, r *http.Request) {
+	items, err := h.store.ListBrands(r.Context())
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": items})
+}
+
+// ListKindFields returns the editable spec field template for an archive kind.
+func (h *Handler) ListKindFields(w http.ResponseWriter, r *http.Request) {
+	kind := strings.TrimSpace(r.URL.Query().Get("kind"))
+	if kind == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "缺少 kind 参数")
+		return
+	}
+	items, err := h.store.ListKindFields(r.Context(), kind)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": items, "kind": kind})
+}
+
+// ListCategories returns category options.
+func (h *Handler) ListCategories(w http.ResponseWriter, r *http.Request) {
+	items, err := h.store.ListCategories(r.Context())
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"items": items})
+}
+
+// CreateCategory adds a category node.
+func (h *Handler) CreateCategory(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.CategoryInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.NameZH) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "分类名称不能为空")
+		return
+	}
+	c, err := h.store.CreateCategory(r.Context(), auth.UserFrom(r.Context()), in)
+	if h.handleCategoryErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, c)
+}
+
+// UpdateCategory renames and/or moves a category node.
+func (h *Handler) UpdateCategory(w http.ResponseWriter, r *http.Request) {
+	var in adminstore.CategoryInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.NameZH) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "分类名称不能为空")
+		return
+	}
+	c, err := h.store.UpdateCategory(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), in)
+	if h.handleCategoryErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, c)
+}
+
+// DeleteCategory removes a leaf category that no product uses.
+func (h *Handler) DeleteCategory(w http.ResponseWriter, r *http.Request) {
+	err := h.store.DeleteCategory(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()))
+	if h.handleCategoryErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// handleCategoryErr maps category-specific errors to client statuses, falling
+// back to handleErr otherwise.
+func (h *Handler) handleCategoryErr(w http.ResponseWriter, err error) bool {
+	if err == nil {
+		return false
+	}
+	switch {
+	case errors.Is(err, adminstore.ErrDuplicatePath):
+		writeError(w, http.StatusConflict, "duplicate_path", "该分类路径已存在，请换一个英文标识(slug)")
+		return true
+	case errors.Is(err, adminstore.ErrCategoryHasChildren):
+		writeError(w, http.StatusConflict, "has_children", "该分类存在子分类，请先删除或移动其子分类")
+		return true
+	case errors.Is(err, adminstore.ErrCategoryInUse):
+		writeError(w, http.StatusConflict, "in_use", "仍有商品归属于该分类，请先改归其它分类")
+		return true
+	case errors.Is(err, adminstore.ErrInvalidParent):
+		writeError(w, http.StatusBadRequest, "invalid_parent", "上级分类无效（不存在或不能移动到自身/子级下）")
+		return true
+	}
+	return h.handleErr(w, err)
+}
+
+type brandInput struct {
+	Name string `json:"name"`
+}
+
+type brandMergeInput struct {
+	TargetID string `json:"target_id"`
+}
+
+// CreateBrand adds a brand.
+func (h *Handler) CreateBrand(w http.ResponseWriter, r *http.Request) {
+	var in brandInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "品牌名称不能为空")
+		return
+	}
+	b, err := h.store.CreateBrand(r.Context(), auth.UserFrom(r.Context()), in.Name)
+	if h.handleBrandErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, b)
+}
+
+// UpdateBrand renames a brand.
+func (h *Handler) UpdateBrand(w http.ResponseWriter, r *http.Request) {
+	var in brandInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "品牌名称不能为空")
+		return
+	}
+	b, err := h.store.UpdateBrand(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), in.Name)
+	if h.handleBrandErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, b)
+}
+
+// MergeBrands folds one brand's products into another, then deletes the source.
+func (h *Handler) MergeBrands(w http.ResponseWriter, r *http.Request) {
+	var in brandMergeInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.TargetID) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "请选择合并目标品牌")
+		return
+	}
+	b, err := h.store.MergeBrands(r.Context(), chi.URLParam(r, "id"), in.TargetID, auth.UserFrom(r.Context()))
+	if h.handleBrandErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, b)
+}
+
+// DeleteBrand removes a brand no product references.
+func (h *Handler) DeleteBrand(w http.ResponseWriter, r *http.Request) {
+	err := h.store.DeleteBrand(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()))
+	if h.handleBrandErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// handleBrandErr maps brand-specific errors to client statuses.
+func (h *Handler) handleBrandErr(w http.ResponseWriter, err error) bool {
+	if err == nil {
+		return false
+	}
+	switch {
+	case errors.Is(err, adminstore.ErrDuplicateBrand):
+		writeError(w, http.StatusConflict, "duplicate_brand", "该品牌名称已存在")
+		return true
+	case errors.Is(err, adminstore.ErrBrandInUse):
+		writeError(w, http.StatusConflict, "in_use", "仍有商品使用该品牌，请先改用其它品牌或合并")
+		return true
+	case errors.Is(err, adminstore.ErrInvalidMerge):
+		writeError(w, http.StatusBadRequest, "invalid_merge", "合并目标无效（不存在或与源品牌相同）")
+		return true
+	}
+	return h.handleErr(w, err)
+}
+
+// ---------- submissions ----------
+
+// CreateSubmission accepts an anonymous public contribution into the queue.
+func (h *Handler) CreateSubmission(w http.ResponseWriter, r *http.Request) {
+	if !h.submitLimit.allow(realIP(r)) {
+		writeError(w, http.StatusTooManyRequests, "rate_limited", "提交过于频繁，请稍后再试")
+		return
+	}
+	var in adminstore.SubmissionInput
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 1<<20)).Decode(&in); err != nil {
+		writeError(w, http.StatusBadRequest, "bad_request", "invalid body")
+		return
+	}
+	if strings.TrimSpace(in.Name) == "" {
+		writeError(w, http.StatusBadRequest, "bad_request", "商品名称不能为空")
+		return
+	}
+	id, err := h.store.CreateSubmission(r.Context(), in, realIP(r))
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, "internal_error", err.Error())
+		return
+	}
+	writeJSON(w, http.StatusCreated, map[string]string{"id": id, "status": "pending"})
+}
+
+// ListSubmissions returns the moderation queue (admin).
+func (h *Handler) ListSubmissions(w http.ResponseWriter, r *http.Request) {
+	status := r.URL.Query().Get("status")
+	page, size := pageParams(r)
+	items, total, err := h.store.ListSubmissions(r.Context(), status, size, (page-1)*size)
+	if h.handleErr(w, err) {
+		return
+	}
+	pending, _ := h.store.PendingSubmissionCount(r.Context())
+	writeJSON(w, http.StatusOK, map[string]any{
+		"items": items, "page": page, "size": size, "total": total, "pending": pending,
+	})
+}
+
+// GetSubmission returns full submission detail (admin).
+func (h *Handler) GetSubmission(w http.ResponseWriter, r *http.Request) {
+	d, err := h.store.GetSubmission(r.Context(), chi.URLParam(r, "id"))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, d)
+}
+
+// ApproveSubmission applies a contribution to the product store (admin).
+func (h *Handler) ApproveSubmission(w http.ResponseWriter, r *http.Request) {
+	d, err := h.store.ApproveSubmission(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()))
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, d)
+}
+
+// RejectSubmission rejects a contribution with a reviewer note (admin).
+func (h *Handler) RejectSubmission(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		Note string `json:"note"`
+	}
+	_ = json.NewDecoder(r.Body).Decode(&body)
+	err := h.store.RejectSubmission(r.Context(), chi.URLParam(r, "id"), auth.UserFrom(r.Context()), body.Note)
+	if h.handleErr(w, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "rejected"})
+}
+
+// ---------- helpers ----------
+
+func realIP(r *http.Request) string {
+	if ip := r.Header.Get("X-Forwarded-For"); ip != "" {
+		if i := strings.IndexByte(ip, ','); i >= 0 {
+			return strings.TrimSpace(ip[:i])
+		}
+		return strings.TrimSpace(ip)
+	}
+	if ip := r.Header.Get("X-Real-IP"); ip != "" {
+		return ip
+	}
+	return r.RemoteAddr
+}
+
+func (h *Handler) handleErr(w http.ResponseWriter, err error) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, adminstore.ErrNotFound) {
+		writeError(w, http.StatusNotFound, "not_found", "资源不存在")
+		return true
+	}
+	if errors.Is(err, adminstore.ErrConflict) {
+		writeError(w, http.StatusConflict, "conflict", "该投稿已被处理")
+		return true
+	}
+	writeError(w, http.StatusInternalServerError, "internal_error", err.Error())
+	return true
+}
+
+func pageParams(r *http.Request) (page, size int) {
+	page = atoiDefault(r.URL.Query().Get("page"), 1)
+	if page < 1 {
+		page = 1
+	}
+	size = atoiDefault(r.URL.Query().Get("size"), 20)
+	if size < 1 {
+		size = 20
+	}
+	if size > 100 {
+		size = 100
+	}
+	return page, size
+}
+
+func atoiDefault(s string, fallback int) int {
+	if s == "" {
+		return fallback
+	}
+	n := 0
+	for _, c := range s {
+		if c < '0' || c > '9' {
+			return fallback
+		}
+		n = n*10 + int(c-'0')
+	}
+	return n
+}
+
+func writeJSON(w http.ResponseWriter, status int, body any) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(body)
+}
+
+func writeError(w http.ResponseWriter, status int, code, message string) {
+	writeJSON(w, status, map[string]any{"error": map[string]string{"code": code, "message": message}})
+}
@@ -0,0 +1,41 @@
+package adminhandler
+
+import (
+	"sync"
+	"time"
+)
+
+// rateLimiter is a simple fixed-window per-key limiter used to throttle
+// anonymous public submissions (basic anti-spam; captcha can be added later).
+type rateLimiter struct {
+	mu     sync.Mutex
+	hits   map[string][]time.Time
+	limit  int
+	window time.Duration
+}
+
+func newRateLimiter(limit int, window time.Duration) *rateLimiter {
+	return &rateLimiter{hits: map[string][]time.Time{}, limit: limit, window: window}
+}
+
+// allow reports whether the key may proceed, recording the hit if so.
+func (r *rateLimiter) allow(key string) bool {
+	now := time.Now()
+	cutoff := now.Add(-r.window)
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	kept := r.hits[key][:0]
+	for _, t := range r.hits[key] {
+		if t.After(cutoff) {
+			kept = append(kept, t)
+		}
+	}
+	if len(kept) >= r.limit {
+		r.hits[key] = kept
+		return false
+	}
+	r.hits[key] = append(kept, now)
+	return true
+}
@@ -0,0 +1,349 @@
+// Package adminstore is the read/write data-access layer for the admin console.
+// Unlike the public store (read-only), it performs INSERT/UPDATE/DELETE and
+// records field-level provenance (source = "manual") plus an audit_log entry
+// for every write, then recomputes product.quality_score.
+package adminstore
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// ErrNotFound is returned when a requested row does not exist.
+var ErrNotFound = errors.New("not found")
+
+// Store wraps a pgx pool for admin operations.
+type Store struct {
+	pool *pgxpool.Pool
+}
+
+// New constructs an admin Store.
+func New(pool *pgxpool.Pool) *Store { return &Store{pool: pool} }
+
+// Ping verifies DB connectivity.
+func (s *Store) Ping(ctx context.Context) error { return s.pool.Ping(ctx) }
+
+// CompletenessFields mirrors ingestion/opengoods/etl/quality.py COMPLETENESS_FIELDS.
+var CompletenessFields = []string{
+	"name", "gtin", "brand", "category", "net_content",
+	"country_of_origin", "nutriments", "ingredients", "image",
+}
+
+// ---------- list ----------
+
+// ProductRow is a list-view row for the admin product table.
+type ProductRow struct {
+	ID           string   `json:"id"`
+	GTIN         *string  `json:"gtin"`
+	Name         string   `json:"name"`
+	Brand        *string  `json:"brand"`
+	CategoryPath *string  `json:"category_path"`
+	Status       string   `json:"status"`
+	QualityScore float64  `json:"quality_score"`
+	Missing      []string `json:"missing"`
+	UpdatedAt    string   `json:"updated_at"`
+}
+
+// productSortColumns whitelists the sortable list columns, mapping the API sort
+// key to a SQL expression. NULLs sort last regardless of direction.
+var productSortColumns = map[string]string{
+	"name":          "p.name",
+	"brand":         "b.name",
+	"gtin":          "p.gtin",
+	"category_path": "c.path",
+	"status":        "p.status",
+	"quality_score": "p.quality_score",
+	"updated_at":    "p.updated_at",
+}
+
+// productOrderBy returns a safe ORDER BY clause for the given sort key/direction,
+// falling back to the default (most recently updated first) for unknown keys.
+func productOrderBy(sort, order string) string {
+	col, ok := productSortColumns[sort]
+	if !ok {
+		return "p.updated_at DESC"
+	}
+	dir := "ASC"
+	if strings.EqualFold(order, "desc") {
+		dir = "DESC"
+	}
+	return col + " " + dir + " NULLS LAST, p.updated_at DESC"
+}
+
+// ListProducts returns a paginated, optionally name/gtin-filtered list.
+func (s *Store) ListProducts(ctx context.Context, q, sort, order string, limit, offset int) ([]ProductRow, int, error) {
+	args := []any{}
+	where := "WHERE 1=1"
+	if q != "" {
+		args = append(args, q)
+		where += " AND (p.name ILIKE '%' || $1 || '%' OR p.gtin ILIKE '%' || $1 || '%')"
+	}
+
+	var total int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM product p "+where, args...).Scan(&total); err != nil {
+		return nil, 0, err
+	}
+
+	qualified, err := s.kindQualifiedKeys(ctx, s.pool)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	args = append(args, limit, offset)
+	sql := `
+SELECT p.id, p.gtin, p.name, b.name, c.path::text, p.status, p.quality_score,
+       p.updated_at, COALESCE(c.archive_kind, 'generic'), p.attributes,
+       (p.brand_id IS NOT NULL) AS has_brand,
+       (p.category_id IS NOT NULL) AS has_cat,
+       (p.net_content_canonical IS NOT NULL) AS has_net,
+       (p.country_of_origin IS NOT NULL AND p.country_of_origin <> '') AS has_country,
+       (f.nutriments IS NOT NULL AND f.nutriments::text <> '{}') AS has_nutri,
+       (f.ingredients_text IS NOT NULL AND f.ingredients_text <> '') AS has_ing,
+       EXISTS (SELECT 1 FROM product_image pi WHERE pi.product_id = p.id) AS has_img
+FROM product p
+LEFT JOIN brand b ON b.id = p.brand_id
+LEFT JOIN category c ON c.id = p.category_id
+LEFT JOIN food_detail f ON f.product_id = p.id ` + where +
+		" ORDER BY " + productOrderBy(sort, order) +
+		" LIMIT $" + strconv.Itoa(len(args)-1) + " OFFSET $" + strconv.Itoa(len(args))
+
+	rows, err := s.pool.Query(ctx, sql, args...)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+
+	out := []ProductRow{}
+	for rows.Next() {
+		var r ProductRow
+		var hasBrand, hasCat, hasNet, hasCountry, hasNutri, hasIng, hasImg bool
+		var kind string
+		var attributes []byte
+		var updated time.Time
+		if err := rows.Scan(&r.ID, &r.GTIN, &r.Name, &r.Brand, &r.CategoryPath, &r.Status,
+			&r.QualityScore, &updated, &kind, &attributes,
+			&hasBrand, &hasCat, &hasNet, &hasCountry,
+			&hasNutri, &hasIng, &hasImg); err != nil {
+			return nil, 0, err
+		}
+		r.UpdatedAt = updated.Format(time.RFC3339)
+		attrs := map[string]any{}
+		if len(attributes) > 0 {
+			_ = json.Unmarshal(attributes, &attrs)
+		}
+		qkeys := qualified[kind]
+		present := map[string]bool{
+			"name":              r.Name != "",
+			"gtin":              r.GTIN != nil && *r.GTIN != "",
+			"brand":             hasBrand,
+			"category":          hasCat,
+			"net_content":       hasNet,
+			"country_of_origin": hasCountry,
+			"nutriments":        hasNutri,
+			"ingredients":       hasIng,
+			"image":             hasImg,
+		}
+		for _, k := range qkeys {
+			present[k] = attrPresent(attrs, k)
+		}
+		r.Missing = []string{}
+		for _, f := range completenessKeys(kind, qkeys) {
+			if !present[f] {
+				r.Missing = append(r.Missing, f)
+			}
+		}
+		out = append(out, r)
+	}
+	return out, total, rows.Err()
+}
+
+// ---------- detail ----------
+
+// ProductImage is one image row.
+type ProductImage struct {
+	ID      string  `json:"id"`
+	URL     string  `json:"url"`
+	Kind    string  `json:"kind"`
+	License *string `json:"license"`
+}
+
+// MSRP is one suggested-retail-price snapshot.
+type MSRP struct {
+	ID            string  `json:"id"`
+	Amount        float64 `json:"amount"`
+	Currency      string  `json:"currency"`
+	Region        string  `json:"region"`
+	EffectiveDate *string `json:"effective_date"`
+	SourceURL     *string `json:"source_url"`
+	Note          *string `json:"note"`
+}
+
+// ProductDetail is the full editable view of a product.
+type ProductDetail struct {
+	ID              string         `json:"id"`
+	GTIN            *string        `json:"gtin"`
+	Name            string         `json:"name"`
+	BrandID         *string        `json:"brand_id"`
+	Brand           *string        `json:"brand"`
+	CategoryID      *string        `json:"category_id"`
+	CategoryPath    *string        `json:"category_path"`
+	ArchiveKind     string         `json:"archive_kind"`
+	Attributes      map[string]any `json:"attributes"`
+	NetContentValue *float64       `json:"net_content_value"`
+	NetContentUnit  *string        `json:"net_content_unit"`
+	CountryOfOrigin *string        `json:"country_of_origin"`
+	Status          string         `json:"status"`
+	QualityScore    float64        `json:"quality_score"`
+	IngredientsText *string        `json:"ingredients_text"`
+	Allergens       []string       `json:"allergens"`
+	Additives       []string       `json:"additives"`
+	Nutriments      map[string]any `json:"nutriments"`
+	NutritionBasis  *string        `json:"nutrition_basis"`
+	ServingSize     *string        `json:"serving_size"`
+	NutriScore      *string        `json:"nutri_score"`
+	Barcodes        []Barcode      `json:"barcodes"`
+	Images          []ProductImage `json:"images"`
+	MSRP            []MSRP         `json:"msrp"`
+	Missing         []string       `json:"missing"`
+	UpdatedAt       string         `json:"updated_at"`
+}
+
+// GetProduct returns the full editable detail for one product.
+func (s *Store) GetProduct(ctx context.Context, id string) (*ProductDetail, error) {
+	var d ProductDetail
+	var nutriments []byte
+	var attributes []byte
+	var updated time.Time
+	err := s.pool.QueryRow(ctx, `
+SELECT p.id, p.gtin, p.name, p.brand_id, b.name, p.category_id, c.path::text,
+       COALESCE(c.archive_kind, 'generic'), p.attributes,
+       p.net_content_value, p.net_content_unit, p.country_of_origin, p.status,
+       p.quality_score, p.updated_at,
+       f.ingredients_text, f.allergens, f.additives, f.nutriments,
+       f.nutrition_basis, f.serving_size, f.nutri_score
+FROM product p
+LEFT JOIN brand b ON b.id = p.brand_id
+LEFT JOIN category c ON c.id = p.category_id
+LEFT JOIN food_detail f ON f.product_id = p.id
+WHERE p.id = $1`, id).Scan(
+		&d.ID, &d.GTIN, &d.Name, &d.BrandID, &d.Brand, &d.CategoryID, &d.CategoryPath,
+		&d.ArchiveKind, &attributes,
+		&d.NetContentValue, &d.NetContentUnit, &d.CountryOfOrigin, &d.Status,
+		&d.QualityScore, &updated,
+		&d.IngredientsText, &d.Allergens, &d.Additives, &nutriments,
+		&d.NutritionBasis, &d.ServingSize, &d.NutriScore,
+	)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	d.UpdatedAt = updated.Format(time.RFC3339)
+	d.Attributes = map[string]any{}
+	if len(attributes) > 0 {
+		_ = json.Unmarshal(attributes, &d.Attributes)
+	}
+	if len(nutriments) > 0 {
+		_ = json.Unmarshal(nutriments, &d.Nutriments)
+	}
+	if d.Allergens == nil {
+		d.Allergens = []string{}
+	}
+	if d.Additives == nil {
+		d.Additives = []string{}
+	}
+
+	bcs, err := s.listBarcodes(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	d.Barcodes = bcs
+
+	imgs, err := s.listImages(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	d.Images = imgs
+
+	msrps, err := s.listMSRP(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	d.MSRP = msrps
+
+	qualified, err := s.kindQualifiedKeys(ctx, s.pool)
+	if err != nil {
+		return nil, err
+	}
+	d.Missing = missingFromDetail(&d, qualified[d.ArchiveKind])
+	return &d, nil
+}
+
+func missingFromDetail(d *ProductDetail, qualifiedAttrKeys []string) []string {
+	present := map[string]bool{
+		"name":              d.Name != "",
+		"gtin":              d.GTIN != nil && *d.GTIN != "",
+		"brand":             d.BrandID != nil,
+		"category":          d.CategoryID != nil,
+		"net_content":       d.NetContentValue != nil,
+		"country_of_origin": d.CountryOfOrigin != nil && *d.CountryOfOrigin != "",
+		"nutriments":        len(d.Nutriments) > 0,
+		"ingredients":       d.IngredientsText != nil && *d.IngredientsText != "",
+		"image":             len(d.Images) > 0,
+	}
+	for _, k := range qualifiedAttrKeys {
+		present[k] = attrPresent(d.Attributes, k)
+	}
+	missing := []string{}
+	for _, f := range completenessKeys(d.ArchiveKind, qualifiedAttrKeys) {
+		if !present[f] {
+			missing = append(missing, f)
+		}
+	}
+	return missing
+}
+
+func (s *Store) listImages(ctx context.Context, productID string) ([]ProductImage, error) {
+	rows, err := s.pool.Query(ctx,
+		"SELECT id, url, kind, license FROM product_image WHERE product_id = $1 ORDER BY id", productID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []ProductImage{}
+	for rows.Next() {
+		var im ProductImage
+		if err := rows.Scan(&im.ID, &im.URL, &im.Kind, &im.License); err != nil {
+			return nil, err
+		}
+		out = append(out, im)
+	}
+	return out, rows.Err()
+}
+
+func (s *Store) listMSRP(ctx context.Context, productID string) ([]MSRP, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT id, amount, currency, region, effective_date::text, source_url, note
+FROM product_msrp WHERE product_id = $1 ORDER BY effective_date DESC NULLS LAST`, productID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []MSRP{}
+	for rows.Next() {
+		var m MSRP
+		if err := rows.Scan(&m.ID, &m.Amount, &m.Currency, &m.Region, &m.EffectiveDate, &m.SourceURL, &m.Note); err != nil {
+			return nil, err
+		}
+		out = append(out, m)
+	}
+	return out, rows.Err()
+}
@@ -0,0 +1,136 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgconn"
+
+	"github.com/baicai2026-baicai/goods/api/internal/apikey"
+)
+
+// APIKeyRow is an admin-facing view of an issued API key (never the secret).
+type APIKeyRow struct {
+	ID              string  `json:"id"`
+	Name            string  `json:"name"`
+	KeyPrefix       string  `json:"key_prefix"`
+	OwnerEmail      *string `json:"owner_email"`
+	Tier            string  `json:"tier"`
+	RateLimitPerMin int     `json:"rate_limit_per_min"`
+	QuotaTotal      int64   `json:"quota_total"`
+	RevokedAt       *string `json:"revoked_at"`
+	CreatedBy       *string `json:"created_by"`
+	CreatedAt       string  `json:"created_at"`
+}
+
+// APIKeyInput holds the fields accepted when issuing a key.
+type APIKeyInput struct {
+	Name            string `json:"name"`
+	OwnerEmail      string `json:"owner_email"`
+	Tier            string `json:"tier"`
+	RateLimitPerMin int    `json:"rate_limit_per_min"`
+	QuotaTotal      int64  `json:"quota_total"`
+}
+
+// CreateAPIKey issues a new key, returning the one-time plaintext alongside the
+// stored row. Only the SHA-256 hash and a short display prefix are persisted.
+func (s *Store) CreateAPIKey(ctx context.Context, in APIKeyInput, createdBy string) (plaintext string, row APIKeyRow, err error) {
+	tier := in.Tier
+	if tier == "" {
+		tier = "free"
+	}
+	rate := in.RateLimitPerMin
+	if rate <= 0 {
+		rate = 120
+	}
+	quota := in.QuotaTotal
+	if quota < 0 {
+		quota = 0
+	}
+	var owner *string
+	if e := strings.TrimSpace(in.OwnerEmail); e != "" {
+		owner = &e
+	}
+
+	key, hash, prefix, err := apikey.Generate()
+	if err != nil {
+		return "", row, err
+	}
+
+	var revoked, created *time.Time
+	var createdByOut *string
+	err = s.pool.QueryRow(ctx, `
+INSERT INTO api_key (name, key_prefix, key_hash, owner_email, tier, rate_limit_per_min, quota_total, created_by)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+RETURNING id, name, key_prefix, owner_email, tier, rate_limit_per_min, quota_total, revoked_at, created_by, created_at`,
+		strings.TrimSpace(in.Name), prefix, hash, owner, tier, rate, quota, createdBy,
+	).Scan(&row.ID, &row.Name, &row.KeyPrefix, &row.OwnerEmail, &row.Tier,
+		&row.RateLimitPerMin, &row.QuotaTotal, &revoked, &createdByOut, &created)
+	if err != nil {
+		return "", row, err
+	}
+	row.CreatedBy = createdByOut
+	if created != nil {
+		row.CreatedAt = created.Format(time.RFC3339)
+	}
+	return key, row, nil
+}
+
+// ListAPIKeys returns all keys (active first, newest first).
+func (s *Store) ListAPIKeys(ctx context.Context) ([]APIKeyRow, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT id, name, key_prefix, owner_email, tier, rate_limit_per_min, quota_total, revoked_at, created_by, created_at
+FROM api_key
+ORDER BY (revoked_at IS NULL) DESC, created_at DESC`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []APIKeyRow{}
+	for rows.Next() {
+		var r APIKeyRow
+		var revoked, created *time.Time
+		if err := rows.Scan(&r.ID, &r.Name, &r.KeyPrefix, &r.OwnerEmail, &r.Tier,
+			&r.RateLimitPerMin, &r.QuotaTotal, &revoked, &r.CreatedBy, &created); err != nil {
+			return nil, err
+		}
+		if revoked != nil {
+			v := revoked.Format(time.RFC3339)
+			r.RevokedAt = &v
+		}
+		if created != nil {
+			r.CreatedAt = created.Format(time.RFC3339)
+		}
+		out = append(out, r)
+	}
+	return out, rows.Err()
+}
+
+// RevokeAPIKey marks a key revoked. Revoking an already-revoked or missing key
+// returns ErrNotFound.
+func (s *Store) RevokeAPIKey(ctx context.Context, id string) error {
+	tag, err := s.pool.Exec(ctx,
+		"UPDATE api_key SET revoked_at = now() WHERE id = $1 AND revoked_at IS NULL", id)
+	if err != nil {
+		if isInvalidUUID(err) {
+			return ErrNotFound
+		}
+		return err
+	}
+	if tag.RowsAffected() == 0 {
+		return ErrNotFound
+	}
+	return nil
+}
+
+// isInvalidUUID reports whether err is a Postgres invalid-UUID-text error,
+// which happens when a non-UUID id is supplied.
+func isInvalidUUID(err error) bool {
+	var pgErr *pgconn.PgError
+	if errors.As(err, &pgErr) {
+		return pgErr.Code == "22P02"
+	}
+	return false
+}
@@ -0,0 +1,270 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+
+	"github.com/jackc/pgx/v5"
+
+	"github.com/baicai2026-baicai/goods/api/internal/gtin"
+)
+
+// Barcode is one GS1 trade item number attached to a product.
+type Barcode struct {
+	ID        string  `json:"id"`
+	GTIN      string  `json:"gtin"`
+	GTINType  string  `json:"gtin_type"`
+	PackLevel string  `json:"pack_level"`
+	Region    *string `json:"region"`
+	IsPrimary bool    `json:"is_primary"`
+}
+
+// BarcodeInput is the payload for attaching a barcode to a product.
+type BarcodeInput struct {
+	GTIN      string  `json:"gtin"`
+	GTINType  string  `json:"gtin_type"`
+	PackLevel string  `json:"pack_level"`
+	Region    *string `json:"region"`
+	IsPrimary bool    `json:"is_primary"`
+}
+
+// ConflictError signals that a barcode is already attached to another product,
+// so the operator must de-duplicate instead of creating a clash.
+type ConflictError struct {
+	GTIN        string
+	ProductID   string
+	ProductName string
+}
+
+func (e *ConflictError) Error() string { return "条码已被其他商品占用：" + e.GTIN }
+
+func validPackLevel(p string) string {
+	switch p {
+	case "each", "case", "pallet":
+		return p
+	default:
+		return "each"
+	}
+}
+
+func validGTINType(t, normalized string) string {
+	switch t {
+	case "EAN8", "UPC", "EAN13", "ITF14", "GTIN14":
+		return t
+	default:
+		return gtin.InferType(normalized)
+	}
+}
+
+func (s *Store) listBarcodes(ctx context.Context, productID string) ([]Barcode, error) {
+	rows, err := s.pool.Query(ctx,
+		`SELECT id, gtin, gtin_type, pack_level, region, is_primary
+		 FROM product_barcode WHERE product_id = $1
+		 ORDER BY is_primary DESC, gtin`, productID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []Barcode{}
+	for rows.Next() {
+		var b Barcode
+		if err := rows.Scan(&b.ID, &b.GTIN, &b.GTINType, &b.PackLevel, &b.Region, &b.IsPrimary); err != nil {
+			return nil, err
+		}
+		out = append(out, b)
+	}
+	return out, rows.Err()
+}
+
+// barcodeOwner returns the product currently owning a barcode, if any.
+func barcodeOwner(ctx context.Context, q pgx.Tx, code string) (productID, productName string, found bool, err error) {
+	err = q.QueryRow(ctx,
+		`SELECT pb.product_id, p.name FROM product_barcode pb
+		 JOIN product p ON p.id = pb.product_id WHERE pb.gtin = $1`, code).
+		Scan(&productID, &productName)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return "", "", false, nil
+	}
+	if err != nil {
+		return "", "", false, err
+	}
+	return productID, productName, true, nil
+}
+
+// AddBarcode validates and attaches a barcode to a product, recording audit.
+// A barcode already owned by another product yields a *ConflictError.
+func (s *Store) AddBarcode(ctx context.Context, productID, actor string, in BarcodeInput) (*Barcode, error) {
+	code, err := gtin.Normalize(in.GTIN)
+	if err != nil {
+		return nil, err
+	}
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	// Product must exist.
+	var exists bool
+	if err := tx.QueryRow(ctx, "SELECT EXISTS(SELECT 1 FROM product WHERE id=$1)", productID).Scan(&exists); err != nil {
+		return nil, err
+	}
+	if !exists {
+		return nil, ErrNotFound
+	}
+
+	// Globally unique: a barcode owned by any product (this one included)
+	// is a conflict the operator must resolve by de-duplicating.
+	if owner, name, found, err := barcodeOwner(ctx, tx, code); err != nil {
+		return nil, err
+	} else if found {
+		return nil, &ConflictError{GTIN: code, ProductID: owner, ProductName: name}
+	}
+
+	// Make this the primary barcode when requested or when none exists yet.
+	makePrimary := in.IsPrimary
+	if !makePrimary {
+		var hasPrimary bool
+		if err := tx.QueryRow(ctx,
+			"SELECT EXISTS(SELECT 1 FROM product_barcode WHERE product_id=$1 AND is_primary)", productID).
+			Scan(&hasPrimary); err != nil {
+			return nil, err
+		}
+		makePrimary = !hasPrimary
+	}
+	if makePrimary {
+		if _, err := tx.Exec(ctx,
+			"UPDATE product_barcode SET is_primary=false WHERE product_id=$1 AND is_primary", productID); err != nil {
+			return nil, err
+		}
+	}
+
+	srcID, _ := s.manualSourceID(ctx, tx)
+	var srcArg any
+	if srcID != "" {
+		srcArg = srcID
+	}
+
+	var b Barcode
+	err = tx.QueryRow(ctx, `
+INSERT INTO product_barcode (product_id, gtin, gtin_type, pack_level, region, is_primary, source_id)
+VALUES ($1,$2,$3,$4,$5,$6,$7)
+RETURNING id, gtin, gtin_type, pack_level, region, is_primary`,
+		productID, code, validGTINType(in.GTINType, code), validPackLevel(in.PackLevel),
+		in.Region, makePrimary, srcArg).
+		Scan(&b.ID, &b.GTIN, &b.GTINType, &b.PackLevel, &b.Region, &b.IsPrimary)
+	if err != nil {
+		return nil, err
+	}
+
+	if makePrimary {
+		if _, err := tx.Exec(ctx, "UPDATE product SET gtin=$2 WHERE id=$1", productID, code); err != nil {
+			return nil, err
+		}
+	}
+	if _, err := s.recomputeQualityTx(ctx, tx, productID); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	_ = s.writeAudit(ctx, actor, "add_barcode", "product", &productID, []string{"gtin"}, nil, b)
+	return &b, nil
+}
+
+// DeleteBarcode removes a barcode; if it was primary, another is promoted.
+func (s *Store) DeleteBarcode(ctx context.Context, productID, barcodeID, actor string) error {
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback(ctx)
+
+	var code string
+	var wasPrimary bool
+	err = tx.QueryRow(ctx,
+		"DELETE FROM product_barcode WHERE id=$1 AND product_id=$2 RETURNING gtin, is_primary",
+		barcodeID, productID).Scan(&code, &wasPrimary)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return ErrNotFound
+	}
+	if err != nil {
+		return err
+	}
+
+	if wasPrimary {
+		var newID, newGTIN string
+		e := tx.QueryRow(ctx,
+			"SELECT id, gtin FROM product_barcode WHERE product_id=$1 ORDER BY gtin LIMIT 1", productID).
+			Scan(&newID, &newGTIN)
+		if e == nil {
+			if _, err := tx.Exec(ctx, "UPDATE product_barcode SET is_primary=true WHERE id=$1", newID); err != nil {
+				return err
+			}
+			if _, err := tx.Exec(ctx, "UPDATE product SET gtin=$2 WHERE id=$1", productID, newGTIN); err != nil {
+				return err
+			}
+		} else if errors.Is(e, pgx.ErrNoRows) {
+			if _, err := tx.Exec(ctx, "UPDATE product SET gtin=NULL WHERE id=$1", productID); err != nil {
+				return err
+			}
+		} else {
+			return e
+		}
+	}
+
+	if _, err := s.recomputeQualityTx(ctx, tx, productID); err != nil {
+		return err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return err
+	}
+	_ = s.writeAudit(ctx, actor, "delete_barcode", "product", &productID, []string{"gtin"},
+		map[string]string{"gtin": code}, nil)
+	return nil
+}
+
+// SetPrimaryBarcode marks one barcode primary and mirrors it to product.gtin.
+func (s *Store) SetPrimaryBarcode(ctx context.Context, productID, barcodeID, actor string) (*Barcode, error) {
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	var code string
+	err = tx.QueryRow(ctx, "SELECT gtin FROM product_barcode WHERE id=$1 AND product_id=$2", barcodeID, productID).Scan(&code)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(ctx, "UPDATE product_barcode SET is_primary=false WHERE product_id=$1 AND is_primary", productID); err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(ctx, "UPDATE product_barcode SET is_primary=true WHERE id=$1", barcodeID); err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(ctx, "UPDATE product SET gtin=$2 WHERE id=$1", productID, code); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "set_primary_barcode", "product", &productID, []string{"gtin"}, nil,
+		map[string]string{"gtin": code})
+
+	bcs, err := s.listBarcodes(ctx, productID)
+	if err != nil {
+		return nil, err
+	}
+	for i := range bcs {
+		if bcs[i].ID == barcodeID {
+			return &bcs[i], nil
+		}
+	}
+	return nil, ErrNotFound
+}
@@ -0,0 +1,154 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// Brand-management errors, mapped to client statuses by the handler.
+var (
+	// ErrDuplicateBrand is returned when a brand name already exists.
+	ErrDuplicateBrand = errors.New("duplicate brand name")
+	// ErrBrandInUse blocks deleting a brand still referenced by products.
+	ErrBrandInUse = errors.New("brand in use")
+	// ErrInvalidMerge is returned when a merge target is missing or equal to
+	// the source.
+	ErrInvalidMerge = errors.New("invalid merge target")
+)
+
+// CreateBrand inserts a new brand. Names are unique by normalized form.
+func (s *Store) CreateBrand(ctx context.Context, actor, name string) (*Brand, error) {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return nil, errors.New("name required")
+	}
+	var b Brand
+	err := s.pool.QueryRow(ctx,
+		`INSERT INTO brand (name, normalized_name) VALUES ($1, $2) RETURNING id, name, 0`,
+		name, normBrand(name)).Scan(&b.ID, &b.Name, &b.ProductCount)
+	if isUniqueViolation(err) {
+		return nil, ErrDuplicateBrand
+	}
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "create", "brand", &b.ID, []string{"name"}, nil, b)
+	return &b, nil
+}
+
+// UpdateBrand renames a brand, keeping the normalized name in sync.
+func (s *Store) UpdateBrand(ctx context.Context, id, actor, name string) (*Brand, error) {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return nil, errors.New("name required")
+	}
+	ct, err := s.pool.Exec(ctx,
+		"UPDATE brand SET name = $1, normalized_name = $2 WHERE id = $3",
+		name, normBrand(name), id)
+	if isUniqueViolation(err) {
+		return nil, ErrDuplicateBrand
+	}
+	if err != nil {
+		return nil, err
+	}
+	if ct.RowsAffected() == 0 {
+		return nil, ErrNotFound
+	}
+	out, err := s.getBrand(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "update", "brand", &id, []string{"name"}, nil, out)
+	return out, nil
+}
+
+// MergeBrands reassigns every product of src to dst, then deletes src. Useful
+// for collapsing duplicate brands (e.g. "可口可乐" and "Coca-Cola").
+func (s *Store) MergeBrands(ctx context.Context, srcID, dstID, actor string) (*Brand, error) {
+	if srcID == dstID {
+		return nil, ErrInvalidMerge
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	var dstName string
+	err = tx.QueryRow(ctx, "SELECT name FROM brand WHERE id = $1", dstID).Scan(&dstName)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrInvalidMerge
+	}
+	if err != nil {
+		return nil, err
+	}
+	var srcName string
+	err = tx.QueryRow(ctx, "SELECT name FROM brand WHERE id = $1", srcID).Scan(&srcName)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := tx.Exec(ctx, "UPDATE product SET brand_id = $1 WHERE brand_id = $2", dstID, srcID); err != nil {
+		return nil, err
+	}
+	if _, err := tx.Exec(ctx, "DELETE FROM brand WHERE id = $1", srcID); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	out, err := s.getBrand(ctx, dstID)
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "merge", "brand", &srcID, []string{"name"},
+		map[string]string{"name": srcName},
+		map[string]string{"merged_into": dstName, "merged_into_id": dstID})
+	return out, nil
+}
+
+// DeleteBrand removes a brand not referenced by any product.
+func (s *Store) DeleteBrand(ctx context.Context, id, actor string) error {
+	before, err := s.getBrand(ctx, id)
+	if err != nil {
+		return err
+	}
+	if before.ProductCount > 0 {
+		return fmt.Errorf("%w: %d products", ErrBrandInUse, before.ProductCount)
+	}
+	ct, err := s.pool.Exec(ctx, "DELETE FROM brand WHERE id = $1", id)
+	if err != nil {
+		if isForeignKeyViolation(err) {
+			return ErrBrandInUse
+		}
+		return err
+	}
+	if ct.RowsAffected() == 0 {
+		return ErrNotFound
+	}
+	_ = s.writeAudit(ctx, actor, "delete", "brand", &id, []string{"name"}, before, nil)
+	return nil
+}
+
+func (s *Store) getBrand(ctx context.Context, id string) (*Brand, error) {
+	var b Brand
+	err := s.pool.QueryRow(ctx, `
+SELECT b.id, b.name,
+       (SELECT count(*) FROM product p WHERE p.brand_id = b.id)
+FROM brand b WHERE b.id = $1`, id).Scan(&b.ID, &b.Name, &b.ProductCount)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &b, nil
+}
@@ -0,0 +1,78 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+	"testing"
+)
+
+func TestBrandLifecycle(t *testing.T) {
+	s := newTestStore(t)
+	ctx := context.Background()
+
+	a, err := s.CreateBrand(ctx, "tester", "品牌A "+randomHex(4))
+	if err != nil {
+		t.Fatalf("create A: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM brand WHERE id = $1", a.ID) })
+
+	b, err := s.CreateBrand(ctx, "tester", "品牌B "+randomHex(4))
+	if err != nil {
+		t.Fatalf("create B: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM brand WHERE id = $1", b.ID) })
+
+	// Duplicate (normalized) name must be rejected.
+	if _, err := s.CreateBrand(ctx, "tester", "  "+a.Name+"  "); !errors.Is(err, ErrDuplicateBrand) {
+		t.Fatalf("expected ErrDuplicateBrand, got %v", err)
+	}
+
+	// Rename.
+	renamed, err := s.UpdateBrand(ctx, a.ID, "tester", "品牌A改名")
+	if err != nil {
+		t.Fatalf("rename: %v", err)
+	}
+	if renamed.Name != "品牌A改名" {
+		t.Fatalf("rename not applied: %q", renamed.Name)
+	}
+
+	// Attach a product to brand A so deletion is blocked and merge moves it.
+	var prodID string
+	err = s.pool.QueryRow(ctx,
+		"INSERT INTO product (name, brand_id, status) VALUES ($1,$2,'active') RETURNING id",
+		"测试商品 "+randomHex(4), a.ID).Scan(&prodID)
+	if err != nil {
+		t.Fatalf("insert product: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM product WHERE id = $1", prodID) })
+
+	// Deleting an in-use brand must fail.
+	if err := s.DeleteBrand(ctx, a.ID, "tester"); !errors.Is(err, ErrBrandInUse) {
+		t.Fatalf("expected ErrBrandInUse, got %v", err)
+	}
+
+	// Merge A into B: product reassigned, A deleted.
+	merged, err := s.MergeBrands(ctx, a.ID, b.ID, "tester")
+	if err != nil {
+		t.Fatalf("merge: %v", err)
+	}
+	if merged.ID != b.ID || merged.ProductCount < 1 {
+		t.Fatalf("merge result wrong: %+v", merged)
+	}
+	if _, err := s.getBrand(ctx, a.ID); !errors.Is(err, ErrNotFound) {
+		t.Fatalf("source brand should be gone, got %v", err)
+	}
+
+	// Self-merge is invalid.
+	if _, err := s.MergeBrands(ctx, b.ID, b.ID, "tester"); !errors.Is(err, ErrInvalidMerge) {
+		t.Fatalf("expected ErrInvalidMerge, got %v", err)
+	}
+
+	// After moving the product away from B, B can be deleted.
+	if _, err := s.pool.Exec(ctx, "DELETE FROM product WHERE id = $1", prodID); err != nil {
+		t.Fatalf("cleanup product: %v", err)
+	}
+	if err := s.DeleteBrand(ctx, b.ID, "tester"); err != nil {
+		t.Fatalf("delete unused brand: %v", err)
+	}
+}
@@ -0,0 +1,80 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+)
+
+// Bulk-operation errors.
+var (
+	// ErrNoTargets is returned when a bulk request selects no products.
+	ErrNoTargets = errors.New("no products selected")
+	// ErrInvalidStatus is returned for an unknown product status value.
+	ErrInvalidStatus = errors.New("invalid status")
+)
+
+var validStatus = map[string]bool{"active": true, "merged": true, "deprecated": true}
+
+// BulkSetStatus updates the status of every selected product in one statement.
+func (s *Store) BulkSetStatus(ctx context.Context, actor string, ids []string, status string) (int, error) {
+	if len(ids) == 0 {
+		return 0, ErrNoTargets
+	}
+	if !validStatus[status] {
+		return 0, ErrInvalidStatus
+	}
+	ct, err := s.pool.Exec(ctx,
+		"UPDATE product SET status = $1 WHERE id = ANY($2)", status, ids)
+	if err != nil {
+		return 0, err
+	}
+	n := int(ct.RowsAffected())
+	_ = s.writeAudit(ctx, actor, "bulk_status", "product", nil,
+		[]string{"status"}, map[string]any{"ids": ids}, map[string]any{"status": status})
+	return n, nil
+}
+
+// BulkSetCategory reassigns the category of every selected product, syncing the
+// GPC brick code and recomputing quality for each one.
+func (s *Store) BulkSetCategory(ctx context.Context, actor string, ids []string, categoryID *string) (int, error) {
+	if len(ids) == 0 {
+		return 0, ErrNoTargets
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback(ctx)
+
+	var gpc *string
+	if categoryID != nil && *categoryID != "" {
+		if err := tx.QueryRow(ctx, "SELECT gpc_brick_code FROM category WHERE id = $1", *categoryID).Scan(&gpc); err != nil {
+			return 0, ErrInvalidParent
+		}
+	} else {
+		categoryID = nil
+	}
+
+	ct, err := tx.Exec(ctx,
+		"UPDATE product SET category_id = $1, gpc_brick_code = $2 WHERE id = ANY($3)",
+		categoryID, gpc, ids)
+	if err != nil {
+		return 0, err
+	}
+	for _, id := range ids {
+		if _, err := s.recomputeQualityTx(ctx, tx, id); err != nil {
+			return 0, err
+		}
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return 0, err
+	}
+	n := int(ct.RowsAffected())
+	cat := ""
+	if categoryID != nil {
+		cat = *categoryID
+	}
+	_ = s.writeAudit(ctx, actor, "bulk_category", "product", nil,
+		[]string{"category"}, map[string]any{"ids": ids}, map[string]any{"category_id": cat})
+	return n, nil
+}
@@ -0,0 +1,298 @@
+package adminstore
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+// randomHex returns n random lowercase hex characters for fallback ltree slugs.
+func randomHex(n int) string {
+	b := make([]byte, (n+1)/2)
+	if _, err := rand.Read(b); err != nil {
+		return "x"
+	}
+	return hex.EncodeToString(b)[:n]
+}
+
+// Category-management errors, mapped to client statuses by the handler.
+var (
+	// ErrDuplicatePath is returned when a category path already exists.
+	ErrDuplicatePath = errors.New("duplicate category path")
+	// ErrCategoryHasChildren blocks deleting a node that still has children.
+	ErrCategoryHasChildren = errors.New("category has children")
+	// ErrCategoryInUse blocks deleting a node still referenced by products.
+	ErrCategoryInUse = errors.New("category in use")
+	// ErrInvalidParent is returned for a missing parent or an illegal move
+	// (onto itself or one of its own descendants).
+	ErrInvalidParent = errors.New("invalid parent category")
+)
+
+// CategoryInput is the payload accepted when creating or editing a category.
+// Slug is the ltree label (ASCII); when empty it is derived from NameEN, then
+// from a random suffix, since ltree labels cannot contain CJK or spaces.
+type CategoryInput struct {
+	NameZH       string  `json:"name_zh"`
+	NameEN       *string `json:"name_en"`
+	Slug         *string `json:"slug"`
+	ParentID     *string `json:"parent_id"`
+	GPCBrickCode *string `json:"gpc_brick_code"`
+}
+
+var slugInvalid = regexp.MustCompile(`[^a-z0-9_]+`)
+
+// slugify converts a string into a valid ltree label ([a-z0-9_]).
+func slugify(s string) string {
+	s = strings.ToLower(strings.TrimSpace(s))
+	s = slugInvalid.ReplaceAllString(s, "_")
+	s = strings.Trim(s, "_")
+	for strings.Contains(s, "__") {
+		s = strings.ReplaceAll(s, "__", "_")
+	}
+	return s
+}
+
+// resolveSlug picks an ltree label from the explicit slug, then NameEN, then a
+// random fallback so a Chinese-only category still gets a valid path label.
+func resolveSlug(in CategoryInput) string {
+	if in.Slug != nil {
+		if s := slugify(*in.Slug); s != "" {
+			return s
+		}
+	}
+	if in.NameEN != nil {
+		if s := slugify(*in.NameEN); s != "" {
+			return s
+		}
+	}
+	return "cat_" + randomHex(6)
+}
+
+func trimPtr(p *string) *string {
+	if p == nil {
+		return nil
+	}
+	t := strings.TrimSpace(*p)
+	if t == "" {
+		return nil
+	}
+	return &t
+}
+
+// CreateCategory inserts a new category node. With no parent it becomes a root
+// (level 0); otherwise its path is parentPath.slug and level is parentLevel+1.
+func (s *Store) CreateCategory(ctx context.Context, actor string, in CategoryInput) (*Category, error) {
+	name := strings.TrimSpace(in.NameZH)
+	if name == "" {
+		return nil, errors.New("name_zh required")
+	}
+
+	parentPath := ""
+	parentLevel := -1
+	kind := DefaultKind
+	var parentID *string
+	if pid := trimPtr(in.ParentID); pid != nil {
+		var path string
+		var level int
+		err := s.pool.QueryRow(ctx, "SELECT path::text, level, archive_kind FROM category WHERE id = $1", *pid).Scan(&path, &level, &kind)
+		if errors.Is(err, pgx.ErrNoRows) {
+			return nil, ErrInvalidParent
+		}
+		if err != nil {
+			return nil, err
+		}
+		parentPath, parentLevel, parentID = path, level, pid
+	}
+
+	slug := resolveSlug(in)
+	path := slug
+	if parentPath != "" {
+		path = parentPath + "." + slug
+	}
+	level := parentLevel + 1
+
+	var c Category
+	err := s.pool.QueryRow(ctx, `
+INSERT INTO category (name_zh, name_en, parent_id, path, gpc_brick_code, level, archive_kind)
+VALUES ($1, $2, $3, $4::ltree, $5, $6, $7)
+RETURNING id, name_zh, name_en, path::text, level, parent_id::text, gpc_brick_code, archive_kind, 0`,
+		name, trimPtr(in.NameEN), parentID, path, trimPtr(in.GPCBrickCode), level, kind).
+		Scan(&c.ID, &c.NameZH, &c.NameEN, &c.Path, &c.Level, &c.ParentID, &c.GPCBrickCode, &c.ArchiveKind, &c.ProductCount)
+	if isUniqueViolation(err) {
+		return nil, ErrDuplicatePath
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	_ = s.writeAudit(ctx, actor, "create", "category", &c.ID, []string{"name_zh", "path"}, nil, c)
+	return &c, nil
+}
+
+// UpdateCategory renames a node and/or moves it under a new parent. Moving
+// rewrites the path of the node and every descendant via ltree, keeping level
+// in sync. Moving a node onto itself or a descendant is rejected.
+func (s *Store) UpdateCategory(ctx context.Context, id, actor string, in CategoryInput) (*Category, error) {
+	name := strings.TrimSpace(in.NameZH)
+	if name == "" {
+		return nil, errors.New("name_zh required")
+	}
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	var oldPath string
+	var oldLevel int
+	var oldParent *string
+	err = tx.QueryRow(ctx, "SELECT path::text, level, parent_id::text FROM category WHERE id = $1", id).
+		Scan(&oldPath, &oldLevel, &oldParent)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := tx.Exec(ctx,
+		"UPDATE category SET name_zh = $1, name_en = $2, gpc_brick_code = $3 WHERE id = $4",
+		name, trimPtr(in.NameEN), trimPtr(in.GPCBrickCode), id); err != nil {
+		return nil, err
+	}
+
+	newParent := trimPtr(in.ParentID)
+	if !strEq(newParent, oldParent) {
+		if err := s.moveCategoryTx(ctx, tx, id, oldPath, newParent); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	out, err := s.getCategory(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "update", "category", &id, []string{"name_zh", "name_en", "gpc_brick_code", "parent_id"}, nil, out)
+	return out, nil
+}
+
+// moveCategoryTx re-parents a subtree. The node's slug (last path label) is
+// preserved; only its ancestor prefix and level change.
+func (s *Store) moveCategoryTx(ctx context.Context, tx pgx.Tx, id, oldPath string, newParent *string) error {
+	slug := oldPath
+	if i := strings.LastIndex(oldPath, "."); i >= 0 {
+		slug = oldPath[i+1:]
+	}
+
+	newBase := slug
+	if newParent != nil {
+		var parentPath string
+		err := tx.QueryRow(ctx, "SELECT path::text FROM category WHERE id = $1", *newParent).Scan(&parentPath)
+		if errors.Is(err, pgx.ErrNoRows) {
+			return ErrInvalidParent
+		}
+		if err != nil {
+			return err
+		}
+		// Disallow moving a node under itself or one of its descendants.
+		if parentPath == oldPath || strings.HasPrefix(parentPath, oldPath+".") {
+			return ErrInvalidParent
+		}
+		newBase = parentPath + "." + slug
+	}
+
+	// Rewrite the node and all descendants in one statement; level tracks depth.
+	_, err := tx.Exec(ctx, `
+UPDATE category
+SET path  = ($1::ltree || subpath(path, nlevel($2::ltree) - 1)),
+    level = nlevel($1::ltree) + (nlevel(path) - nlevel($2::ltree)) - 1
+WHERE path = $2::ltree OR path <@ $2::ltree`, newBase, oldPath)
+	if isUniqueViolation(err) {
+		return ErrDuplicatePath
+	}
+	if err != nil {
+		return err
+	}
+
+	_, err = tx.Exec(ctx, "UPDATE category SET parent_id = $1 WHERE id = $2", newParent, id)
+	return err
+}
+
+// DeleteCategory removes a leaf node not referenced by any product. Nodes with
+// children or in-use nodes are rejected with a specific error.
+func (s *Store) DeleteCategory(ctx context.Context, id, actor string) error {
+	before, err := s.getCategory(ctx, id)
+	if err != nil {
+		return err
+	}
+
+	var children int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM category WHERE parent_id = $1", id).Scan(&children); err != nil {
+		return err
+	}
+	if children > 0 {
+		return ErrCategoryHasChildren
+	}
+
+	var products int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM product WHERE category_id = $1", id).Scan(&products); err != nil {
+		return err
+	}
+	if products > 0 {
+		return fmt.Errorf("%w: %d products", ErrCategoryInUse, products)
+	}
+
+	ct, err := s.pool.Exec(ctx, "DELETE FROM category WHERE id = $1", id)
+	if err != nil {
+		// A concurrent product assignment can still trip the FK.
+		if isForeignKeyViolation(err) {
+			return ErrCategoryInUse
+		}
+		return err
+	}
+	if ct.RowsAffected() == 0 {
+		return ErrNotFound
+	}
+
+	_ = s.writeAudit(ctx, actor, "delete", "category", &id, []string{"path"}, before, nil)
+	return nil
+}
+
+func (s *Store) getCategory(ctx context.Context, id string) (*Category, error) {
+	var c Category
+	err := s.pool.QueryRow(ctx, `
+SELECT c.id, c.name_zh, c.name_en, c.path::text, c.level, c.parent_id::text,
+       c.gpc_brick_code, c.archive_kind,
+       (SELECT count(*) FROM product p WHERE p.category_id = c.id)
+FROM category c WHERE c.id = $1`, id).
+		Scan(&c.ID, &c.NameZH, &c.NameEN, &c.Path, &c.Level, &c.ParentID, &c.GPCBrickCode, &c.ArchiveKind, &c.ProductCount)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &c, nil
+}
+
+func isUniqueViolation(err error) bool {
+	var pgErr *pgconn.PgError
+	return errors.As(err, &pgErr) && pgErr.Code == "23505"
+}
+
+func isForeignKeyViolation(err error) bool {
+	var pgErr *pgconn.PgError
+	return errors.As(err, &pgErr) && pgErr.Code == "23503"
+}
@@ -0,0 +1,130 @@
+package adminstore
+
+import (
+	"context"
+	"errors"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// newTestStore connects to the test database, skipping when it is unreachable
+// or migrations have not been applied.
+func newTestStore(t *testing.T) *Store {
+	t.Helper()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Skipf("no database: %v", err)
+	}
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		t.Skipf("database not reachable: %v", err)
+	}
+	var hasTable bool
+	if err := pool.QueryRow(ctx, "SELECT to_regclass('public.category') IS NOT NULL").Scan(&hasTable); err != nil || !hasTable {
+		pool.Close()
+		t.Skip("migrations not applied (category missing)")
+	}
+	t.Cleanup(pool.Close)
+	return New(pool)
+}
+
+func ptr(s string) *string { return &s }
+
+func TestCategoryLifecycle(t *testing.T) {
+	s := newTestStore(t)
+	ctx := context.Background()
+
+	root, err := s.CreateCategory(ctx, "tester", CategoryInput{
+		NameZH: "测试根", Slug: ptr("test_root_" + randomHex(6)),
+	})
+	if err != nil {
+		t.Fatalf("create root: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM category WHERE path <@ $1::ltree", root.Path) })
+
+	if root.Level != 0 || root.ParentID != nil {
+		t.Fatalf("root level/parent wrong: level=%d parent=%v", root.Level, root.ParentID)
+	}
+
+	child, err := s.CreateCategory(ctx, "tester", CategoryInput{
+		NameZH: "测试子", NameEN: ptr("Test Child"), ParentID: &root.ID,
+	})
+	if err != nil {
+		t.Fatalf("create child: %v", err)
+	}
+	if child.Level != 1 || child.ParentID == nil || *child.ParentID != root.ID {
+		t.Fatalf("child hierarchy wrong: %+v", child)
+	}
+
+	// Deleting a node with children must fail.
+	if err := s.DeleteCategory(ctx, root.ID, "tester"); !errors.Is(err, ErrCategoryHasChildren) {
+		t.Fatalf("expected ErrCategoryHasChildren, got %v", err)
+	}
+
+	// Rename child.
+	renamed, err := s.UpdateCategory(ctx, child.ID, "tester", CategoryInput{NameZH: "测试子-改名"})
+	if err != nil {
+		t.Fatalf("rename: %v", err)
+	}
+	if renamed.NameZH != "测试子-改名" {
+		t.Fatalf("rename not applied: %q", renamed.NameZH)
+	}
+
+	// Move child to a second root, descendants' path/level should follow.
+	root2, err := s.CreateCategory(ctx, "tester", CategoryInput{
+		NameZH: "测试根2", Slug: ptr("test_root2_" + randomHex(6)),
+	})
+	if err != nil {
+		t.Fatalf("create root2: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM category WHERE path <@ $1::ltree", root2.Path) })
+
+	moved, err := s.UpdateCategory(ctx, child.ID, "tester", CategoryInput{NameZH: "测试子-改名", ParentID: &root2.ID})
+	if err != nil {
+		t.Fatalf("move: %v", err)
+	}
+	if moved.ParentID == nil || *moved.ParentID != root2.ID {
+		t.Fatalf("move parent wrong: %+v", moved)
+	}
+	if moved.Level != 1 {
+		t.Fatalf("moved level wrong: %d", moved.Level)
+	}
+
+	// Moving a node under itself must be rejected.
+	if _, err := s.UpdateCategory(ctx, root2.ID, "tester", CategoryInput{NameZH: "测试根2", ParentID: &child.ID}); !errors.Is(err, ErrInvalidParent) {
+		t.Fatalf("expected ErrInvalidParent for self-move, got %v", err)
+	}
+
+	// Duplicate path on create must be rejected.
+	if _, err := s.CreateCategory(ctx, "tester", CategoryInput{NameZH: "dup", Slug: ptr(root.Path)}); !errors.Is(err, ErrDuplicatePath) {
+		t.Fatalf("expected ErrDuplicatePath, got %v", err)
+	}
+
+	// Now the leaf can be deleted.
+	if err := s.DeleteCategory(ctx, child.ID, "tester"); err != nil {
+		t.Fatalf("delete leaf: %v", err)
+	}
+}
+
+func TestSlugify(t *testing.T) {
+	cases := map[string]string{
+		"Cooking Oil":  "cooking_oil",
+		"  Hello--Wld": "hello_wld",
+		"食品":           "",
+		"a__b":         "a_b",
+	}
+	for in, want := range cases {
+		if got := slugify(in); got != want {
+			t.Errorf("slugify(%q) = %q, want %q", in, got, want)
+		}
+	}
+}
@@ -0,0 +1,101 @@
+package adminstore
+
+import "context"
+
+// DefaultKind is used for products whose category has no archive kind (or no
+// category at all).
+const DefaultKind = "generic"
+
+// FoodKind keeps the mature, dedicated food_detail path; every other kind is
+// driven generically by kind_field + product.attributes.
+const FoodKind = "food"
+
+// genericBaseFields are the core completeness fields for any non-food kind.
+// Food keeps its own richer CompletenessFields list.
+var genericBaseFields = []string{"name", "gtin", "brand", "category", "image"}
+
+// KindField describes one editable spec field for an archive kind. It drives
+// both the dynamic admin form and the kind-aware completeness computation.
+type KindField struct {
+	Kind        string   `json:"kind"`
+	FieldKey    string   `json:"field_key"`
+	GroupLabel  string   `json:"group_label"`
+	LabelZH     string   `json:"label_zh"`
+	FieldType   string   `json:"field_type"`
+	Unit        *string  `json:"unit"`
+	Options     []string `json:"options"`
+	Placeholder *string  `json:"placeholder"`
+	SortOrder   int      `json:"sort_order"`
+	Qualified   bool     `json:"qualified"`
+}
+
+// ListKindFields returns the ordered field template for one archive kind.
+func (s *Store) ListKindFields(ctx context.Context, kind string) ([]KindField, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT kind, field_key, group_label, label_zh, field_type, unit, options,
+       placeholder, sort_order, qualified
+FROM kind_field WHERE kind = $1 ORDER BY sort_order, field_key`, kind)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []KindField{}
+	for rows.Next() {
+		var f KindField
+		if err := rows.Scan(&f.Kind, &f.FieldKey, &f.GroupLabel, &f.LabelZH,
+			&f.FieldType, &f.Unit, &f.Options, &f.Placeholder, &f.SortOrder,
+			&f.Qualified); err != nil {
+			return nil, err
+		}
+		out = append(out, f)
+	}
+	return out, rows.Err()
+}
+
+// kindQualifiedKeys returns, per kind, the attribute keys that count toward the
+// completeness/qualified score. Loaded in one query so list views stay cheap.
+func (s *Store) kindQualifiedKeys(ctx context.Context, q queryer) (map[string][]string, error) {
+	rows, err := s.pool.Query(ctx,
+		"SELECT kind, field_key FROM kind_field WHERE qualified ORDER BY sort_order, field_key")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	m := map[string][]string{}
+	for rows.Next() {
+		var kind, key string
+		if err := rows.Scan(&kind, &key); err != nil {
+			return nil, err
+		}
+		m[kind] = append(m[kind], key)
+	}
+	return m, rows.Err()
+}
+
+// completenessKeys returns the ordered list of field keys that define a full
+// archive for the given kind.
+func completenessKeys(kind string, qualifiedAttrKeys []string) []string {
+	if kind == FoodKind {
+		return CompletenessFields
+	}
+	keys := make([]string, 0, len(genericBaseFields)+len(qualifiedAttrKeys))
+	keys = append(keys, genericBaseFields...)
+	keys = append(keys, qualifiedAttrKeys...)
+	return keys
+}
+
+// attrPresent reports whether an attribute value is meaningfully filled in.
+func attrPresent(attrs map[string]any, key string) bool {
+	v, ok := attrs[key]
+	if !ok || v == nil {
+		return false
+	}
+	switch t := v.(type) {
+	case string:
+		return t != ""
+	case []any:
+		return len(t) > 0
+	default:
+		return true
+	}
+}
@@ -0,0 +1,119 @@
+package adminstore
+
+import (
+	"context"
+	"testing"
+)
+
+// contains reports whether s holds v.
+func contains(s []string, v string) bool {
+	for _, x := range s {
+		if x == v {
+			return true
+		}
+	}
+	return false
+}
+
+// electronicsCategoryID returns the seeded electronics.phone category id,
+// skipping the test when the archive-kind migration is not applied.
+func electronicsCategoryID(t *testing.T, s *Store) string {
+	t.Helper()
+	ctx := context.Background()
+	var hasTable bool
+	if err := s.pool.QueryRow(ctx, "SELECT to_regclass('public.kind_field') IS NOT NULL").Scan(&hasTable); err != nil || !hasTable {
+		t.Skip("archive-kind migration not applied (kind_field missing)")
+	}
+	var id string
+	err := s.pool.QueryRow(ctx, "SELECT id FROM category WHERE path = 'electronics.phone'::ltree").Scan(&id)
+	if err != nil {
+		t.Skipf("electronics.phone category not seeded: %v", err)
+	}
+	return id
+}
+
+func TestListKindFieldsElectronics(t *testing.T) {
+	s := newTestStore(t)
+	electronicsCategoryID(t, s) // ensures migration applied
+	fields, err := s.ListKindFields(context.Background(), "electronics")
+	if err != nil {
+		t.Fatalf("list kind fields: %v", err)
+	}
+	if len(fields) == 0 {
+		t.Fatal("expected seeded electronics fields, got none")
+	}
+	var sawQualified bool
+	for _, f := range fields {
+		if f.FieldKey == "model_number" && f.Qualified {
+			sawQualified = true
+		}
+	}
+	if !sawQualified {
+		t.Fatal("expected model_number to be a qualified field")
+	}
+}
+
+// TestElectronicsArchiveKind verifies a non-food product uses the electronics
+// completeness rules: food fields (nutriments/ingredients) are not required,
+// and qualified spec fields drive both "missing" and the quality score.
+func TestElectronicsArchiveKind(t *testing.T) {
+	s := newTestStore(t)
+	ctx := context.Background()
+	catID := electronicsCategoryID(t, s)
+
+	created, err := s.CreateProduct(ctx, "tester", ProductInput{
+		Name:       "测试手机 " + randomHex(6),
+		CategoryID: &catID,
+	})
+	if err != nil {
+		t.Fatalf("create product: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM product WHERE id = $1", created.ID) })
+
+	if created.ArchiveKind != "electronics" {
+		t.Fatalf("archive_kind = %q, want electronics", created.ArchiveKind)
+	}
+	// Food-only completeness fields must not be required for electronics.
+	if contains(created.Missing, "nutriments") || contains(created.Missing, "ingredients") {
+		t.Fatalf("electronics product should not require food fields: missing=%v", created.Missing)
+	}
+	// Qualified spec fields should appear as missing while empty.
+	for _, k := range []string{"model_number", "ccc_cert", "screen_size"} {
+		if !contains(created.Missing, k) {
+			t.Fatalf("expected %q in missing, got %v", k, created.Missing)
+		}
+	}
+
+	scoreBefore := created.QualityScore
+
+	gtin := "69" + randomHex(11)
+	brand := "TestPhoneCo"
+	updated, err := s.UpdateProduct(ctx, created.ID, "tester", ProductInput{
+		Name:       created.Name,
+		GTIN:       &gtin,
+		BrandName:  &brand,
+		CategoryID: &catID,
+		Status:     "active",
+		Attributes: map[string]any{
+			"model_number": "X-100",
+			"ccc_cert":     "2024010101234567",
+			"screen_size":  "6.1",
+			"color":        "黑色",
+		},
+	})
+	if err != nil {
+		t.Fatalf("update product: %v", err)
+	}
+
+	if got := updated.Attributes["model_number"]; got != "X-100" {
+		t.Fatalf("attributes not persisted: %v", updated.Attributes)
+	}
+	for _, k := range []string{"model_number", "ccc_cert", "screen_size"} {
+		if contains(updated.Missing, k) {
+			t.Fatalf("%q should be filled, still missing: %v", k, updated.Missing)
+		}
+	}
+	if updated.QualityScore <= scoreBefore {
+		t.Fatalf("quality should rise after filling fields: before=%v after=%v", scoreBefore, updated.QualityScore)
+	}
+}
@@ -0,0 +1,159 @@
+package adminstore
+
+import (
+	"context"
+	"encoding/json"
+	"math"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// Quality weights mirror ingestion/opengoods/etl/quality.py.
+const (
+	wCompleteness = 0.4
+	wSourceTrust  = 0.3
+	wAgreement    = 0.2
+	wFreshness    = 0.1
+)
+
+// queryer is satisfied by both *pgxpool.Pool and pgx.Tx.
+type queryer interface {
+	QueryRow(ctx context.Context, sql string, args ...any) pgx.Row
+}
+
+func agreementFromSources(n int) float64 {
+	switch {
+	case n <= 1:
+		return 0.5
+	case n == 2:
+		return 0.8
+	default:
+		return 1.0
+	}
+}
+
+func freshnessFromAge(ageDays *float64) float64 {
+	if ageDays == nil {
+		return 0.5
+	}
+	d := *ageDays
+	switch {
+	case d <= 30:
+		return 1.0
+	case d <= 180:
+		return 0.8
+	case d <= 365:
+		return 0.6
+	case d <= 730:
+		return 0.4
+	default:
+		return 0.2
+	}
+}
+
+func (s *Store) computeQuality(ctx context.Context, q queryer, productID string) (float64, error) {
+	var name, country *string
+	var gtin *string
+	var brandID, categoryID *string
+	var netCanonical *float64
+	var ingredients *string
+	var hasNutri, hasImage bool
+	var kind string
+	var attributes []byte
+	err := q.QueryRow(ctx, `
+SELECT p.name, p.gtin, p.brand_id, p.category_id, p.net_content_canonical,
+       p.country_of_origin, COALESCE(c.archive_kind, 'generic'), p.attributes,
+       f.ingredients_text,
+       (f.nutriments IS NOT NULL AND f.nutriments::text <> '{}'),
+       EXISTS (SELECT 1 FROM product_image pi WHERE pi.product_id = p.id)
+FROM product p
+LEFT JOIN category c ON c.id = p.category_id
+LEFT JOIN food_detail f ON f.product_id = p.id
+WHERE p.id = $1`, productID).Scan(
+		&name, &gtin, &brandID, &categoryID, &netCanonical, &country,
+		&kind, &attributes, &ingredients, &hasNutri, &hasImage)
+	if err != nil {
+		return 0, err
+	}
+
+	attrs := map[string]any{}
+	if len(attributes) > 0 {
+		_ = json.Unmarshal(attributes, &attrs)
+	}
+	qualified, err := s.kindQualifiedKeys(ctx, s.pool)
+	if err != nil {
+		return 0, err
+	}
+	qkeys := qualified[kind]
+
+	known := map[string]bool{
+		"name":              name != nil && *name != "",
+		"gtin":              gtin != nil && *gtin != "",
+		"brand":             brandID != nil,
+		"category":          categoryID != nil,
+		"net_content":       netCanonical != nil,
+		"country_of_origin": country != nil && *country != "",
+		"nutriments":        hasNutri,
+		"ingredients":       ingredients != nil && *ingredients != "",
+		"image":             hasImage,
+	}
+	for _, k := range qkeys {
+		known[k] = attrPresent(attrs, k)
+	}
+	keys := completenessKeys(kind, qkeys)
+	present := 0
+	for _, k := range keys {
+		if known[k] {
+			present++
+		}
+	}
+	completeness := float64(present) / float64(len(keys))
+
+	var sourceCount int
+	var sourceTrust *float64
+	var lastFetched *time.Time
+	err = q.QueryRow(ctx, `
+SELECT count(DISTINCT ps.source_id), COALESCE(max(s.trust_weight),0), max(ps.fetched_at)
+FROM product_source ps LEFT JOIN source s ON s.id = ps.source_id
+WHERE ps.product_id = $1`, productID).Scan(&sourceCount, &sourceTrust, &lastFetched)
+	if err != nil {
+		return 0, err
+	}
+	trust := 0.0
+	if sourceTrust != nil {
+		trust = *sourceTrust
+	}
+
+	var ageDays *float64
+	if lastFetched != nil {
+		d := time.Since(*lastFetched).Hours() / 24.0
+		if d < 0 {
+			d = 0
+		}
+		ageDays = &d
+	}
+
+	raw := wCompleteness*completeness + wSourceTrust*trust +
+		wAgreement*agreementFromSources(sourceCount) + wFreshness*freshnessFromAge(ageDays)
+	raw = math.Max(0, math.Min(1, raw))
+	return math.Round(raw*1000) / 1000, nil
+}
+
+func (s *Store) recomputeQualityTx(ctx context.Context, tx pgx.Tx, productID string) (float64, error) {
+	v, err := s.computeQuality(ctx, tx, productID)
+	if err != nil {
+		return 0, err
+	}
+	_, err = tx.Exec(ctx, "UPDATE product SET quality_score=$1 WHERE id=$2", v, productID)
+	return v, err
+}
+
+func (s *Store) recomputeQuality(ctx context.Context, productID string) (float64, error) {
+	v, err := s.computeQuality(ctx, s.pool, productID)
+	if err != nil {
+		return 0, err
+	}
+	_, err = s.pool.Exec(ctx, "UPDATE product SET quality_score=$1 WHERE id=$2", v, productID)
+	return v, err
+}
@@ -0,0 +1,30 @@
+package adminstore
+
+import "testing"
+
+func TestAgreementFromSources(t *testing.T) {
+	cases := map[int]float64{0: 0.5, 1: 0.5, 2: 0.8, 3: 1.0, 9: 1.0}
+	for n, want := range cases {
+		if got := agreementFromSources(n); got != want {
+			t.Errorf("agreementFromSources(%d) = %v, want %v", n, got, want)
+		}
+	}
+}
+
+func TestFreshnessFromAge(t *testing.T) {
+	mk := func(d float64) *float64 { return &d }
+	if got := freshnessFromAge(nil); got != 0.5 {
+		t.Errorf("nil age = %v, want 0.5", got)
+	}
+	cases := []struct {
+		days float64
+		want float64
+	}{
+		{10, 1.0}, {30, 1.0}, {100, 0.8}, {300, 0.6}, {500, 0.4}, {1000, 0.2},
+	}
+	for _, c := range cases {
+		if got := freshnessFromAge(mk(c.days)); got != c.want {
+			t.Errorf("freshnessFromAge(%v) = %v, want %v", c.days, got, c.want)
+		}
+	}
+}
@@ -0,0 +1,61 @@
+package adminstore
+
+import "context"
+
+// QualifiedMinScore is the quality_score threshold at or above which a product
+// counts as "qualified" (合格) in admin and public stats.
+const QualifiedMinScore = 0.6
+
+// AdminStats summarizes the catalog for the admin overview dashboard.
+type AdminStats struct {
+	Products   int            `json:"products"`
+	Qualified  int            `json:"qualified"`
+	MinScore   float64        `json:"min_score"`
+	ByStatus   map[string]int `json:"by_status"`
+	Brands     int            `json:"brands"`
+	Categories int            `json:"categories"`
+	Pending    int            `json:"pending_submissions"`
+	AvgQuality float64        `json:"avg_quality"`
+}
+
+// Stats gathers the dashboard counters in a handful of aggregate queries.
+func (s *Store) Stats(ctx context.Context) (*AdminStats, error) {
+	out := &AdminStats{MinScore: QualifiedMinScore, ByStatus: map[string]int{}}
+
+	if err := s.pool.QueryRow(ctx, `
+SELECT count(*),
+       count(*) FILTER (WHERE quality_score >= $1 AND status = 'active'),
+       COALESCE(avg(quality_score), 0)
+FROM product`, QualifiedMinScore).Scan(&out.Products, &out.Qualified, &out.AvgQuality); err != nil {
+		return nil, err
+	}
+
+	rows, err := s.pool.Query(ctx, "SELECT status, count(*) FROM product GROUP BY status")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var st string
+		var n int
+		if err := rows.Scan(&st, &n); err != nil {
+			return nil, err
+		}
+		out.ByStatus[st] = n
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM brand").Scan(&out.Brands); err != nil {
+		return nil, err
+	}
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM category").Scan(&out.Categories); err != nil {
+		return nil, err
+	}
+	if err := s.pool.QueryRow(ctx,
+		"SELECT count(*) FROM submission WHERE status = 'pending'").Scan(&out.Pending); err != nil {
+		return nil, err
+	}
+	return out, nil
+}
@@ -0,0 +1,71 @@
+package adminstore
+
+import (
+	"context"
+	"testing"
+)
+
+func TestStatsAndBulk(t *testing.T) {
+	s := newTestStore(t)
+	ctx := context.Background()
+
+	base, err := s.Stats(ctx)
+	if err != nil {
+		t.Fatalf("stats: %v", err)
+	}
+
+	var p1, p2 string
+	if err := s.pool.QueryRow(ctx,
+		"INSERT INTO product (name, status) VALUES ($1,'active') RETURNING id",
+		"批量测试1 "+randomHex(4)).Scan(&p1); err != nil {
+		t.Fatalf("insert p1: %v", err)
+	}
+	if err := s.pool.QueryRow(ctx,
+		"INSERT INTO product (name, status) VALUES ($1,'active') RETURNING id",
+		"批量测试2 "+randomHex(4)).Scan(&p2); err != nil {
+		t.Fatalf("insert p2: %v", err)
+	}
+	t.Cleanup(func() { _, _ = s.pool.Exec(ctx, "DELETE FROM product WHERE id = ANY($1)", []string{p1, p2}) })
+
+	after, err := s.Stats(ctx)
+	if err != nil {
+		t.Fatalf("stats after: %v", err)
+	}
+	if after.Products != base.Products+2 {
+		t.Fatalf("product count: got %d want %d", after.Products, base.Products+2)
+	}
+
+	// Bulk set status to deprecated.
+	n, err := s.BulkSetStatus(ctx, "tester", []string{p1, p2}, "deprecated")
+	if err != nil || n != 2 {
+		t.Fatalf("bulk status: n=%d err=%v", n, err)
+	}
+	var deprecated int
+	if err := s.pool.QueryRow(ctx,
+		"SELECT count(*) FROM product WHERE id = ANY($1) AND status='deprecated'",
+		[]string{p1, p2}).Scan(&deprecated); err != nil {
+		t.Fatalf("verify: %v", err)
+	}
+	if deprecated != 2 {
+		t.Fatalf("expected 2 deprecated, got %d", deprecated)
+	}
+
+	// Invalid status rejected.
+	if _, err := s.BulkSetStatus(ctx, "tester", []string{p1}, "nope"); err != ErrInvalidStatus {
+		t.Fatalf("expected ErrInvalidStatus, got %v", err)
+	}
+
+	// Empty selection rejected.
+	if _, err := s.BulkSetStatus(ctx, "tester", nil, "active"); err != ErrNoTargets {
+		t.Fatalf("expected ErrNoTargets, got %v", err)
+	}
+
+	// Global audit log should contain the bulk_status entry.
+	rows, total, err := s.ListAllAudit(ctx, 10, 0)
+	if err != nil {
+		t.Fatalf("audit: %v", err)
+	}
+	if total == 0 || len(rows) == 0 {
+		t.Fatalf("expected audit rows, got total=%d", total)
+	}
+}
@@ -0,0 +1,421 @@
+package adminstore
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// ErrConflict is returned when a submission has already been reviewed.
+var ErrConflict = errors.New("conflict")
+
+// SubmissionImage is one proposed image URL inside a contribution.
+type SubmissionImage struct {
+	URL  string `json:"url"`
+	Kind string `json:"kind"`
+}
+
+// SubmissionInput is the public contribution payload (no login required).
+type SubmissionInput struct {
+	GTIN             *string           `json:"gtin"`
+	Name             string            `json:"name"`
+	BrandName        *string           `json:"brand_name"`
+	CategoryID       *string           `json:"category_id"`
+	NetContentValue  *float64          `json:"net_content_value"`
+	NetContentUnit   *string           `json:"net_content_unit"`
+	CountryOfOrigin  *string           `json:"country_of_origin"`
+	IngredientsText  *string           `json:"ingredients_text"`
+	Nutriments       map[string]any    `json:"nutriments"`
+	NutritionBasis   *string           `json:"nutrition_basis"`
+	ServingSize      *string           `json:"serving_size"`
+	NutriScore       *string           `json:"nutri_score"`
+	Images           []SubmissionImage `json:"images"`
+	MSRP             []MSRPInput       `json:"msrp"`
+	SubmitterName    *string           `json:"submitter_name"`
+	SubmitterContact *string           `json:"submitter_contact"`
+	Note             *string           `json:"note"`
+}
+
+// SubmissionRow is a queue-list row for the admin review table.
+type SubmissionRow struct {
+	ID            string  `json:"id"`
+	GTIN          *string `json:"gtin"`
+	Name          string  `json:"name"`
+	Status        string  `json:"status"`
+	SubmitterName *string `json:"submitter_name"`
+	Matched       bool    `json:"matched"`
+	CreatedAt     string  `json:"created_at"`
+	ReviewedAt    *string `json:"reviewed_at"`
+}
+
+// SubmissionDetail is the full review view of one contribution.
+type SubmissionDetail struct {
+	ID               string          `json:"id"`
+	Status           string          `json:"status"`
+	GTIN             *string         `json:"gtin"`
+	Name             string          `json:"name"`
+	SubmitterName    *string         `json:"submitter_name"`
+	SubmitterContact *string         `json:"submitter_contact"`
+	Note             *string         `json:"note"`
+	ReviewNote       *string         `json:"review_note"`
+	ReviewedBy       *string         `json:"reviewed_by"`
+	ReviewedAt       *string         `json:"reviewed_at"`
+	CreatedAt        string          `json:"created_at"`
+	TargetProductID  *string         `json:"target_product_id"`
+	ResultProductID  *string         `json:"result_product_id"`
+	Payload          SubmissionInput `json:"payload"`
+	ExistingProduct  *ProductDetail  `json:"existing_product,omitempty"`
+}
+
+// CreateSubmission validates and stores a public contribution as pending.
+func (s *Store) CreateSubmission(ctx context.Context, in SubmissionInput, remoteIP string) (string, error) {
+	in.Name = strings.TrimSpace(in.Name)
+	if in.Name == "" {
+		return "", errors.New("商品名称不能为空")
+	}
+	if in.GTIN != nil {
+		g := strings.TrimSpace(*in.GTIN)
+		if g == "" {
+			in.GTIN = nil
+		} else {
+			in.GTIN = &g
+		}
+	}
+
+	// Link to an existing product when the barcode already exists (supplement).
+	var target *string
+	if in.GTIN != nil {
+		var pid string
+		err := s.pool.QueryRow(ctx, "SELECT id FROM product WHERE gtin = $1", *in.GTIN).Scan(&pid)
+		if err == nil {
+			target = &pid
+		} else if !errors.Is(err, pgx.ErrNoRows) {
+			return "", err
+		}
+	}
+
+	payload, err := json.Marshal(in)
+	if err != nil {
+		return "", err
+	}
+
+	var id string
+	err = s.pool.QueryRow(ctx, `
+INSERT INTO submission (gtin, name, payload, target_product_id, submitter_name, submitter_contact, note, remote_ip)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8) RETURNING id`,
+		in.GTIN, in.Name, payload, target, in.SubmitterName, in.SubmitterContact, in.Note, remoteIP).Scan(&id)
+	return id, err
+}
+
+// ListSubmissions returns submissions filtered by status (empty = all).
+func (s *Store) ListSubmissions(ctx context.Context, status string, limit, offset int) ([]SubmissionRow, int, error) {
+	args := []any{}
+	where := "WHERE 1=1"
+	if status != "" {
+		args = append(args, status)
+		where += " AND status = $1"
+	}
+
+	var total int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM submission "+where, args...).Scan(&total); err != nil {
+		return nil, 0, err
+	}
+
+	args = append(args, limit, offset)
+	sql := `
+SELECT id, gtin, name, status, submitter_name, (target_product_id IS NOT NULL),
+       created_at, reviewed_at
+FROM submission ` + where +
+		" ORDER BY (status='pending') DESC, created_at DESC LIMIT $" +
+		strconv.Itoa(len(args)-1) + " OFFSET $" + strconv.Itoa(len(args))
+
+	rows, err := s.pool.Query(ctx, sql, args...)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+
+	out := []SubmissionRow{}
+	for rows.Next() {
+		var r SubmissionRow
+		var created time.Time
+		var reviewed *time.Time
+		if err := rows.Scan(&r.ID, &r.GTIN, &r.Name, &r.Status, &r.SubmitterName, &r.Matched, &created, &reviewed); err != nil {
+			return nil, 0, err
+		}
+		r.CreatedAt = created.Format(time.RFC3339)
+		if reviewed != nil {
+			t := reviewed.Format(time.RFC3339)
+			r.ReviewedAt = &t
+		}
+		out = append(out, r)
+	}
+	return out, total, rows.Err()
+}
+
+// PendingSubmissionCount returns the number of submissions awaiting review.
+func (s *Store) PendingSubmissionCount(ctx context.Context) (int, error) {
+	var n int
+	err := s.pool.QueryRow(ctx, "SELECT count(*) FROM submission WHERE status='pending'").Scan(&n)
+	return n, err
+}
+
+// GetSubmission returns the full review detail for one submission.
+func (s *Store) GetSubmission(ctx context.Context, id string) (*SubmissionDetail, error) {
+	var d SubmissionDetail
+	var payload []byte
+	var created time.Time
+	var reviewed *time.Time
+	err := s.pool.QueryRow(ctx, `
+SELECT id, status, gtin, name, submitter_name, submitter_contact, note,
+       review_note, reviewed_by, reviewed_at, created_at, target_product_id, result_product_id, payload
+FROM submission WHERE id = $1`, id).Scan(
+		&d.ID, &d.Status, &d.GTIN, &d.Name, &d.SubmitterName, &d.SubmitterContact, &d.Note,
+		&d.ReviewNote, &d.ReviewedBy, &reviewed, &created, &d.TargetProductID, &d.ResultProductID, &payload,
+	)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	d.CreatedAt = created.Format(time.RFC3339)
+	if reviewed != nil {
+		t := reviewed.Format(time.RFC3339)
+		d.ReviewedAt = &t
+	}
+	if len(payload) > 0 {
+		_ = json.Unmarshal(payload, &d.Payload)
+	}
+	if d.TargetProductID != nil {
+		if ep, err := s.GetProduct(ctx, *d.TargetProductID); err == nil {
+			d.ExistingProduct = ep
+		}
+	}
+	return &d, nil
+}
+
+// RejectSubmission marks a pending submission as rejected with a reviewer note.
+func (s *Store) RejectSubmission(ctx context.Context, id, actor, note string) error {
+	ct, err := s.pool.Exec(ctx, `
+UPDATE submission SET status='rejected', review_note=$2, reviewed_by=$3, reviewed_at=now()
+WHERE id=$1 AND status='pending'`, id, note, actor)
+	if err != nil {
+		return err
+	}
+	if ct.RowsAffected() == 0 {
+		// Distinguish missing vs already-reviewed.
+		var st string
+		if e := s.pool.QueryRow(ctx, "SELECT status FROM submission WHERE id=$1", id).Scan(&st); errors.Is(e, pgx.ErrNoRows) {
+			return ErrNotFound
+		}
+		return ErrConflict
+	}
+	_ = s.writeAudit(ctx, actor, "reject_submission", "submission", &id, []string{}, nil, map[string]string{"review_note": note})
+	return nil
+}
+
+// ApproveSubmission applies a pending contribution to the product store
+// (creating or supplementing a product), records community provenance + audit,
+// recomputes quality, and marks the submission approved.
+func (s *Store) ApproveSubmission(ctx context.Context, id, actor string) (*ProductDetail, error) {
+	sub, err := s.GetSubmission(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	if sub.Status != "pending" {
+		return nil, ErrConflict
+	}
+	in := sub.Payload
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	communityID, err := s.sourceIDTx(ctx, tx, "community")
+	if err != nil {
+		return nil, err
+	}
+
+	// Resolve the target product (existing supplement vs new create).
+	productID := ""
+	if sub.TargetProductID != nil {
+		productID = *sub.TargetProductID
+	} else if in.GTIN != nil {
+		var pid string
+		if e := tx.QueryRow(ctx, "SELECT id FROM product WHERE gtin=$1", *in.GTIN).Scan(&pid); e == nil {
+			productID = pid
+		} else if !errors.Is(e, pgx.ErrNoRows) {
+			return nil, e
+		}
+	}
+
+	var brandID *string
+	if in.BrandName != nil && strings.TrimSpace(*in.BrandName) != "" {
+		bid, err := s.ensureBrand(ctx, tx, strings.TrimSpace(*in.BrandName))
+		if err != nil {
+			return nil, err
+		}
+		brandID = &bid
+	}
+	var gpc *string
+	if in.CategoryID != nil && *in.CategoryID != "" {
+		if err := tx.QueryRow(ctx, "SELECT gpc_brick_code FROM category WHERE id=$1", *in.CategoryID).Scan(&gpc); err != nil && !errors.Is(err, pgx.ErrNoRows) {
+			return nil, err
+		}
+	}
+	canonical, err := s.netCanonical(ctx, tx, in.NetContentValue, in.NetContentUnit)
+	if err != nil {
+		return nil, err
+	}
+
+	fields := submissionFields(in)
+
+	if productID == "" {
+		// Create a new product from the contribution.
+		err = tx.QueryRow(ctx, `
+INSERT INTO product (gtin, name, brand_id, category_id, gpc_brick_code,
+   net_content_value, net_content_unit, net_content_canonical, country_of_origin, status)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,'active') RETURNING id`,
+			in.GTIN, in.Name, brandID, in.CategoryID, gpc,
+			in.NetContentValue, in.NetContentUnit, canonical, in.CountryOfOrigin).Scan(&productID)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		// Supplement an existing product: only overwrite fields the
+		// contribution actually provides (COALESCE keeps current values).
+		_, err = tx.Exec(ctx, `
+UPDATE product SET
+   name=COALESCE(NULLIF($2,''), name),
+   brand_id=COALESCE($3, brand_id),
+   category_id=COALESCE($4, category_id),
+   gpc_brick_code=COALESCE($5, gpc_brick_code),
+   net_content_value=COALESCE($6, net_content_value),
+   net_content_unit=COALESCE($7, net_content_unit),
+   net_content_canonical=COALESCE($8, net_content_canonical),
+   country_of_origin=COALESCE($9, country_of_origin),
+   gtin=COALESCE($10, gtin)
+WHERE id=$1`,
+			productID, in.Name, brandID, in.CategoryID, gpc,
+			in.NetContentValue, in.NetContentUnit, canonical, in.CountryOfOrigin, in.GTIN)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// food_detail: upsert, preserving existing values where not provided.
+	var nutriJSON []byte
+	if len(in.Nutriments) > 0 {
+		nutriJSON, _ = json.Marshal(in.Nutriments)
+	}
+	_, err = tx.Exec(ctx, `
+INSERT INTO food_detail (product_id, ingredients_text, nutriments, nutrition_basis, serving_size, nutri_score)
+VALUES ($1,$2,$3,$4,$5,$6)
+ON CONFLICT (product_id) DO UPDATE SET
+   ingredients_text=COALESCE(EXCLUDED.ingredients_text, food_detail.ingredients_text),
+   nutriments=COALESCE(EXCLUDED.nutriments, food_detail.nutriments),
+   nutrition_basis=COALESCE(EXCLUDED.nutrition_basis, food_detail.nutrition_basis),
+   serving_size=COALESCE(EXCLUDED.serving_size, food_detail.serving_size),
+   nutri_score=COALESCE(EXCLUDED.nutri_score, food_detail.nutri_score)`,
+		productID, in.IngredientsText, nutriJSON, in.NutritionBasis, in.ServingSize, in.NutriScore)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, im := range in.Images {
+		url := strings.TrimSpace(im.URL)
+		if url == "" {
+			continue
+		}
+		kind := im.Kind
+		if kind != "front" && kind != "ingredients" && kind != "nutrition" {
+			kind = "other"
+		}
+		if _, err := tx.Exec(ctx, `
+INSERT INTO product_image (product_id, url, kind, source_id) VALUES ($1,$2,$3,$4)`,
+			productID, url, kind, communityID); err != nil {
+			return nil, err
+		}
+	}
+
+	for _, m := range in.MSRP {
+		if m.Amount <= 0 {
+			continue
+		}
+		cur := m.Currency
+		if cur == "" {
+			cur = "CNY"
+		}
+		region := m.Region
+		if region == "" {
+			region = "CN"
+		}
+		if _, err := tx.Exec(ctx, `
+INSERT INTO product_msrp (product_id, amount, currency, region, source_id, source_url, effective_date, note)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8)`,
+			productID, m.Amount, cur, region, communityID, m.SourceURL, m.EffectiveDate, m.Note); err != nil {
+			return nil, err
+		}
+	}
+
+	if _, err := s.recomputeQualityTx(ctx, tx, productID); err != nil {
+		return nil, err
+	}
+
+	if _, err := tx.Exec(ctx, `
+UPDATE submission SET status='approved', reviewed_by=$2, reviewed_at=now(), result_product_id=$3
+WHERE id=$1`, id, actor, productID); err != nil {
+		return nil, err
+	}
+
+	// Field-level provenance for the contributed fields (community source).
+	if len(fields) > 0 {
+		if _, err := tx.Exec(ctx, `
+INSERT INTO product_source (product_id, source_id, url, fields, fetched_at, raw)
+VALUES ($1,$2,NULL,$3,now(),NULL)`, productID, communityID, fields); err != nil {
+			return nil, err
+		}
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	_ = s.writeAudit(ctx, actor, "approve_submission", "product", &productID, fields,
+		map[string]string{"submission_id": id}, map[string]string{"product_id": productID})
+
+	return s.GetProduct(ctx, productID)
+}
+
+func (s *Store) sourceIDTx(ctx context.Context, tx pgx.Tx, name string) (string, error) {
+	var id string
+	err := tx.QueryRow(ctx, "SELECT id FROM source WHERE name=$1", name).Scan(&id)
+	return id, err
+}
+
+// submissionFields lists the product fields a contribution provides values for.
+func submissionFields(in SubmissionInput) []string {
+	fields := []string{"name"}
+	add := func(name string, present bool) {
+		if present {
+			fields = append(fields, name)
+		}
+	}
+	add("gtin", in.GTIN != nil && *in.GTIN != "")
+	add("brand", in.BrandName != nil && strings.TrimSpace(*in.BrandName) != "")
+	add("category", in.CategoryID != nil && *in.CategoryID != "")
+	add("net_content", in.NetContentValue != nil)
+	add("country_of_origin", in.CountryOfOrigin != nil && *in.CountryOfOrigin != "")
+	add("ingredients", in.IngredientsText != nil && *in.IngredientsText != "")
+	add("nutriments", len(in.Nutriments) > 0)
+	add("image", len(in.Images) > 0)
+	return fields
+}
@@ -0,0 +1,559 @@
+package adminstore
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strings"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// ProductInput is the editable payload accepted from the admin UI.
+type ProductInput struct {
+	GTIN            *string        `json:"gtin"`
+	Name            string         `json:"name"`
+	BrandID         *string        `json:"brand_id"`
+	BrandName       *string        `json:"brand_name"`
+	CategoryID      *string        `json:"category_id"`
+	NetContentValue *float64       `json:"net_content_value"`
+	NetContentUnit  *string        `json:"net_content_unit"`
+	CountryOfOrigin *string        `json:"country_of_origin"`
+	Status          string         `json:"status"`
+	IngredientsText *string        `json:"ingredients_text"`
+	Allergens       []string       `json:"allergens"`
+	Additives       []string       `json:"additives"`
+	Nutriments      map[string]any `json:"nutriments"`
+	NutritionBasis  *string        `json:"nutrition_basis"`
+	ServingSize     *string        `json:"serving_size"`
+	NutriScore      *string        `json:"nutri_score"`
+	// Attributes carries non-food spec values (driven by kind_field) for the
+	// generic archive kinds. Nil means "leave unchanged".
+	Attributes map[string]any `json:"attributes"`
+}
+
+func normBrand(name string) string { return strings.Join(strings.Fields(strings.ToLower(name)), " ") }
+
+func (s *Store) ensureBrand(ctx context.Context, tx pgx.Tx, name string) (string, error) {
+	var id string
+	err := tx.QueryRow(ctx, `
+INSERT INTO brand (name, normalized_name) VALUES ($1, $2)
+ON CONFLICT (normalized_name) DO UPDATE SET name = brand.name
+RETURNING id`, name, normBrand(name)).Scan(&id)
+	return id, err
+}
+
+func (s *Store) manualSourceID(ctx context.Context, tx pgx.Tx) (string, error) {
+	var id string
+	err := tx.QueryRow(ctx, "SELECT id FROM source WHERE name = 'manual'").Scan(&id)
+	return id, err
+}
+
+// netCanonical converts value+unit to the canonical base unit via the unit table.
+func (s *Store) netCanonical(ctx context.Context, tx pgx.Tx, value *float64, unit *string) (*float64, error) {
+	if value == nil || unit == nil || *unit == "" {
+		return nil, nil
+	}
+	var factor *float64
+	err := tx.QueryRow(ctx, "SELECT to_canonical_factor FROM unit WHERE code = $1", *unit).Scan(&factor)
+	if errors.Is(err, pgx.ErrNoRows) || factor == nil {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	c := *value * *factor
+	return &c, nil
+}
+
+// UpdateProduct applies an edit, records provenance + audit, and recomputes quality.
+func (s *Store) UpdateProduct(ctx context.Context, id, actor string, in ProductInput) (*ProductDetail, error) {
+	before, err := s.GetProduct(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	// Resolve brand (create-by-name takes precedence over id).
+	brandID := in.BrandID
+	if in.BrandName != nil && strings.TrimSpace(*in.BrandName) != "" {
+		bid, err := s.ensureBrand(ctx, tx, strings.TrimSpace(*in.BrandName))
+		if err != nil {
+			return nil, err
+		}
+		brandID = &bid
+	}
+
+	// Resolve category gpc brick code + archive kind.
+	var gpc *string
+	kind := DefaultKind
+	if in.CategoryID != nil && *in.CategoryID != "" {
+		if err := tx.QueryRow(ctx, "SELECT gpc_brick_code, archive_kind FROM category WHERE id = $1", *in.CategoryID).Scan(&gpc, &kind); err != nil && !errors.Is(err, pgx.ErrNoRows) {
+			return nil, err
+		}
+	}
+
+	canonical, err := s.netCanonical(ctx, tx, in.NetContentValue, in.NetContentUnit)
+	if err != nil {
+		return nil, err
+	}
+
+	status := in.Status
+	if status == "" {
+		status = before.Status
+	}
+
+	_, err = tx.Exec(ctx, `
+UPDATE product SET gtin=$1, name=$2, brand_id=$3, category_id=$4, gpc_brick_code=$5,
+   net_content_value=$6, net_content_unit=$7, net_content_canonical=$8,
+   country_of_origin=$9, status=$10
+WHERE id=$11`,
+		in.GTIN, in.Name, brandID, in.CategoryID, gpc,
+		in.NetContentValue, in.NetContentUnit, canonical,
+		in.CountryOfOrigin, status, id)
+	if err != nil {
+		return nil, err
+	}
+
+	// Non-food spec values live in product.attributes (nil means unchanged).
+	if in.Attributes != nil {
+		attrJSON, _ := json.Marshal(in.Attributes)
+		if _, err = tx.Exec(ctx, "UPDATE product SET attributes=$1 WHERE id=$2", attrJSON, id); err != nil {
+			return nil, err
+		}
+	}
+
+	if kind == FoodKind {
+		var nutriJSON []byte
+		if in.Nutriments != nil {
+			nutriJSON, _ = json.Marshal(in.Nutriments)
+		}
+		allergens := in.Allergens
+		if allergens == nil {
+			allergens = []string{}
+		}
+		additives := in.Additives
+		if additives == nil {
+			additives = []string{}
+		}
+		_, err = tx.Exec(ctx, `
+INSERT INTO food_detail (product_id, ingredients_text, allergens, additives,
+   nutriments, nutrition_basis, serving_size, nutri_score)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8)
+ON CONFLICT (product_id) DO UPDATE SET
+   ingredients_text=EXCLUDED.ingredients_text,
+   allergens=EXCLUDED.allergens,
+   additives=EXCLUDED.additives,
+   nutriments=EXCLUDED.nutriments,
+   nutrition_basis=EXCLUDED.nutrition_basis,
+   serving_size=EXCLUDED.serving_size,
+   nutri_score=EXCLUDED.nutri_score`,
+			id, in.IngredientsText, allergens, additives,
+			nutriJSON, in.NutritionBasis, in.ServingSize, in.NutriScore)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if _, err := s.recomputeQualityTx(ctx, tx, id); err != nil {
+		return nil, err
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	after, err := s.GetProduct(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	changed := diffFields(before, after)
+	if len(changed) > 0 {
+		if err := s.recordProvenance(ctx, id, changed); err != nil {
+			return nil, err
+		}
+	}
+	if err := s.writeAudit(ctx, actor, "update", "product", &id, changed, before, after); err != nil {
+		return nil, err
+	}
+	return after, nil
+}
+
+// ErrDuplicateGTIN is returned when a product GTIN already exists.
+var ErrDuplicateGTIN = errors.New("duplicate gtin")
+
+// CreateProduct inserts a new product from the admin UI. Only the core fields
+// are required; the operator completes the rest in the detail editor.
+func (s *Store) CreateProduct(ctx context.Context, actor string, in ProductInput) (*ProductDetail, error) {
+	if strings.TrimSpace(in.Name) == "" {
+		return nil, errors.New("name required")
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+
+	brandID := in.BrandID
+	if in.BrandName != nil && strings.TrimSpace(*in.BrandName) != "" {
+		bid, err := s.ensureBrand(ctx, tx, strings.TrimSpace(*in.BrandName))
+		if err != nil {
+			return nil, err
+		}
+		brandID = &bid
+	}
+
+	var gpc *string
+	if in.CategoryID != nil && *in.CategoryID != "" {
+		if err := tx.QueryRow(ctx, "SELECT gpc_brick_code FROM category WHERE id = $1", *in.CategoryID).Scan(&gpc); err != nil && !errors.Is(err, pgx.ErrNoRows) {
+			return nil, err
+		}
+	}
+
+	canonical, err := s.netCanonical(ctx, tx, in.NetContentValue, in.NetContentUnit)
+	if err != nil {
+		return nil, err
+	}
+
+	status := in.Status
+	if status == "" {
+		status = "active"
+	}
+
+	var id string
+	err = tx.QueryRow(ctx, `
+INSERT INTO product (gtin, name, brand_id, category_id, gpc_brick_code,
+   net_content_value, net_content_unit, net_content_canonical,
+   country_of_origin, status)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10)
+RETURNING id`,
+		in.GTIN, in.Name, brandID, in.CategoryID, gpc,
+		in.NetContentValue, in.NetContentUnit, canonical,
+		in.CountryOfOrigin, status).Scan(&id)
+	if isUniqueViolation(err) {
+		return nil, ErrDuplicateGTIN
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := s.recomputeQualityTx(ctx, tx, id); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+
+	after, err := s.GetProduct(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "create", "product", &id, []string{"name"}, nil, after)
+	return after, nil
+}
+
+func strEq(a, b *string) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return *a == *b
+}
+
+func floatEq(a, b *float64) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return *a == *b
+}
+
+func diffFields(a, b *ProductDetail) []string {
+	changed := []string{}
+	add := func(name string, eq bool) {
+		if !eq {
+			changed = append(changed, name)
+		}
+	}
+	add("gtin", strEq(a.GTIN, b.GTIN))
+	add("name", a.Name == b.Name)
+	add("brand", strEq(a.BrandID, b.BrandID))
+	add("category", strEq(a.CategoryID, b.CategoryID))
+	add("net_content", floatEq(a.NetContentValue, b.NetContentValue) && strEq(a.NetContentUnit, b.NetContentUnit))
+	add("country_of_origin", strEq(a.CountryOfOrigin, b.CountryOfOrigin))
+	add("status", a.Status == b.Status)
+	add("ingredients", strEq(a.IngredientsText, b.IngredientsText))
+	ja, _ := json.Marshal(a.Nutriments)
+	jb, _ := json.Marshal(b.Nutriments)
+	add("nutriments", string(ja) == string(jb))
+	add("nutrition_basis", strEq(a.NutritionBasis, b.NutritionBasis))
+	add("serving_size", strEq(a.ServingSize, b.ServingSize))
+	add("nutri_score", strEq(a.NutriScore, b.NutriScore))
+	aa, _ := json.Marshal(a.Attributes)
+	ab, _ := json.Marshal(b.Attributes)
+	add("attributes", string(aa) == string(ab))
+	return changed
+}
+
+func (s *Store) recordProvenance(ctx context.Context, productID string, fields []string) error {
+	var srcID string
+	if err := s.pool.QueryRow(ctx, "SELECT id FROM source WHERE name = 'manual'").Scan(&srcID); err != nil {
+		return err
+	}
+	_, err := s.pool.Exec(ctx, `
+INSERT INTO product_source (product_id, source_id, url, fields, fetched_at, raw)
+VALUES ($1, $2, NULL, $3, now(), NULL)`, productID, srcID, fields)
+	return err
+}
+
+func (s *Store) writeAudit(ctx context.Context, actor, action, entity string, entityID *string, fields []string, before, after any) error {
+	bj, _ := json.Marshal(before)
+	aj, _ := json.Marshal(after)
+	if fields == nil {
+		fields = []string{}
+	}
+	_, err := s.pool.Exec(ctx, `
+INSERT INTO audit_log (actor, action, entity, entity_id, fields, before, after)
+VALUES ($1,$2,$3,$4,$5,$6,$7)`, actor, action, entity, entityID, fields, bj, aj)
+	return err
+}
+
+// ---------- images ----------
+
+// AddImage inserts an image URL (manual source) and recomputes quality.
+func (s *Store) AddImage(ctx context.Context, productID, actor, url, kind string) (*ProductImage, error) {
+	if kind == "" {
+		kind = "other"
+	}
+	var srcID string
+	if err := s.pool.QueryRow(ctx, "SELECT id FROM source WHERE name = 'manual'").Scan(&srcID); err != nil {
+		return nil, err
+	}
+	var im ProductImage
+	err := s.pool.QueryRow(ctx, `
+INSERT INTO product_image (product_id, url, kind, license, source_id)
+VALUES ($1,$2,$3,NULL,$4) RETURNING id, url, kind, license`,
+		productID, url, kind, srcID).Scan(&im.ID, &im.URL, &im.Kind, &im.License)
+	if err != nil {
+		return nil, err
+	}
+	if _, err := s.recomputeQuality(ctx, productID); err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "add_image", "product", &productID, []string{"image"}, nil, im)
+	return &im, nil
+}
+
+// DeleteImage removes an image and recomputes quality.
+func (s *Store) DeleteImage(ctx context.Context, productID, imageID, actor string) error {
+	ct, err := s.pool.Exec(ctx, "DELETE FROM product_image WHERE id=$1 AND product_id=$2", imageID, productID)
+	if err != nil {
+		return err
+	}
+	if ct.RowsAffected() == 0 {
+		return ErrNotFound
+	}
+	if _, err := s.recomputeQuality(ctx, productID); err != nil {
+		return err
+	}
+	_ = s.writeAudit(ctx, actor, "delete_image", "product", &productID, []string{"image"}, map[string]string{"image_id": imageID}, nil)
+	return nil
+}
+
+// ---------- msrp ----------
+
+// MSRPInput is the payload for adding an MSRP snapshot.
+type MSRPInput struct {
+	Amount        float64 `json:"amount"`
+	Currency      string  `json:"currency"`
+	Region        string  `json:"region"`
+	EffectiveDate *string `json:"effective_date"`
+	SourceURL     *string `json:"source_url"`
+	Note          *string `json:"note"`
+}
+
+// AddMSRP inserts a suggested-retail-price snapshot.
+func (s *Store) AddMSRP(ctx context.Context, productID, actor string, in MSRPInput) (*MSRP, error) {
+	if in.Currency == "" {
+		in.Currency = "CNY"
+	}
+	if in.Region == "" {
+		in.Region = "CN"
+	}
+	var srcID string
+	_ = s.pool.QueryRow(ctx, "SELECT id FROM source WHERE name = 'manual'").Scan(&srcID)
+	var m MSRP
+	err := s.pool.QueryRow(ctx, `
+INSERT INTO product_msrp (product_id, amount, currency, region, source_id, source_url, effective_date, note)
+VALUES ($1,$2,$3,$4,$5,$6,$7,$8)
+RETURNING id, amount, currency, region, effective_date::text, source_url, note`,
+		productID, in.Amount, in.Currency, in.Region, srcID, in.SourceURL, in.EffectiveDate, in.Note).
+		Scan(&m.ID, &m.Amount, &m.Currency, &m.Region, &m.EffectiveDate, &m.SourceURL, &m.Note)
+	if err != nil {
+		return nil, err
+	}
+	_ = s.writeAudit(ctx, actor, "add_msrp", "product", &productID, []string{"msrp"}, nil, m)
+	return &m, nil
+}
+
+// DeleteMSRP removes an MSRP snapshot.
+func (s *Store) DeleteMSRP(ctx context.Context, productID, msrpID, actor string) error {
+	ct, err := s.pool.Exec(ctx, "DELETE FROM product_msrp WHERE id=$1 AND product_id=$2", msrpID, productID)
+	if err != nil {
+		return err
+	}
+	if ct.RowsAffected() == 0 {
+		return ErrNotFound
+	}
+	_ = s.writeAudit(ctx, actor, "delete_msrp", "product", &productID, []string{"msrp"}, map[string]string{"msrp_id": msrpID}, nil)
+	return nil
+}
+
+// ---------- dictionaries ----------
+
+// Brand is a brand option for the edit form and the management view.
+type Brand struct {
+	ID           string `json:"id"`
+	Name         string `json:"name"`
+	ProductCount int    `json:"product_count"`
+}
+
+// ListBrands returns all brands ordered by name, with the number of products
+// referencing each one.
+func (s *Store) ListBrands(ctx context.Context) ([]Brand, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT b.id, b.name,
+       (SELECT count(*) FROM product p WHERE p.brand_id = b.id) AS product_count
+FROM brand b
+ORDER BY b.name`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []Brand{}
+	for rows.Next() {
+		var b Brand
+		if err := rows.Scan(&b.ID, &b.Name, &b.ProductCount); err != nil {
+			return nil, err
+		}
+		out = append(out, b)
+	}
+	return out, rows.Err()
+}
+
+// Category is a category option for the edit form and the management view.
+type Category struct {
+	ID           string  `json:"id"`
+	NameZH       string  `json:"name_zh"`
+	NameEN       *string `json:"name_en"`
+	Path         string  `json:"path"`
+	Level        int     `json:"level"`
+	ParentID     *string `json:"parent_id"`
+	GPCBrickCode *string `json:"gpc_brick_code"`
+	ArchiveKind  string  `json:"archive_kind"`
+	ProductCount int     `json:"product_count"`
+}
+
+// ListCategories returns the full category tree (path order) with the number of
+// products directly assigned to each node.
+func (s *Store) ListCategories(ctx context.Context) ([]Category, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT c.id, c.name_zh, c.name_en, c.path::text, c.level, c.parent_id::text,
+       c.gpc_brick_code, c.archive_kind,
+       (SELECT count(*) FROM product p WHERE p.category_id = c.id) AS product_count
+FROM category c
+ORDER BY c.path`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []Category{}
+	for rows.Next() {
+		var c Category
+		if err := rows.Scan(&c.ID, &c.NameZH, &c.NameEN, &c.Path, &c.Level,
+			&c.ParentID, &c.GPCBrickCode, &c.ArchiveKind, &c.ProductCount); err != nil {
+			return nil, err
+		}
+		out = append(out, c)
+	}
+	return out, rows.Err()
+}
+
+// ---------- audit ----------
+
+// AuditEntry is one audit-log row for the history view.
+type AuditEntry struct {
+	ID        string   `json:"id"`
+	Actor     string   `json:"actor"`
+	Action    string   `json:"action"`
+	Fields    []string `json:"fields"`
+	CreatedAt string   `json:"created_at"`
+}
+
+// AuditLogRow is one global audit-log row for the operations log view.
+type AuditLogRow struct {
+	ID        string   `json:"id"`
+	Actor     string   `json:"actor"`
+	Action    string   `json:"action"`
+	Entity    string   `json:"entity"`
+	EntityID  *string  `json:"entity_id"`
+	Fields    []string `json:"fields"`
+	CreatedAt string   `json:"created_at"`
+}
+
+// ListAllAudit returns a page of the global audit log, newest first, along with
+// the total row count.
+func (s *Store) ListAllAudit(ctx context.Context, limit, offset int) ([]AuditLogRow, int, error) {
+	var total int
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) FROM audit_log").Scan(&total); err != nil {
+		return nil, 0, err
+	}
+	rows, err := s.pool.Query(ctx, `
+SELECT id, actor, action, entity, entity_id::text, fields, created_at::text
+FROM audit_log
+ORDER BY created_at DESC
+LIMIT $1 OFFSET $2`, limit, offset)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+	out := []AuditLogRow{}
+	for rows.Next() {
+		var e AuditLogRow
+		if err := rows.Scan(&e.ID, &e.Actor, &e.Action, &e.Entity, &e.EntityID, &e.Fields, &e.CreatedAt); err != nil {
+			return nil, 0, err
+		}
+		out = append(out, e)
+	}
+	return out, total, rows.Err()
+}
+
+// ListAudit returns audit history for one product, newest first.
+func (s *Store) ListAudit(ctx context.Context, productID string, limit int) ([]AuditEntry, error) {
+	rows, err := s.pool.Query(ctx, `
+SELECT id, actor, action, fields, created_at::text
+FROM audit_log WHERE entity='product' AND entity_id=$1
+ORDER BY created_at DESC LIMIT $2`, productID, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []AuditEntry{}
+	for rows.Next() {
+		var e AuditEntry
+		if err := rows.Scan(&e.ID, &e.Actor, &e.Action, &e.Fields, &e.CreatedAt); err != nil {
+			return nil, err
+		}
+		out = append(out, e)
+	}
+	return out, rows.Err()
+}
@@ -0,0 +1,7 @@
+<!doctype html>
+<html lang="zh">
+  <head><meta charset="utf-8" /><title>OpenGoods 管理后台</title></head>
+  <body>
+    <p>管理后台前端尚未构建。Docker 构建会在此处放入真正的前端产物。</p>
+  </body>
+</html>
@@ -0,0 +1,21 @@
+// Package adminweb embeds the built admin SPA (Vite dist). During Docker builds
+// the real dist/ is produced by the node stage and copied in before go build;
+// the committed placeholder keeps the package compilable for `go build ./...`.
+package adminweb
+
+import (
+	"embed"
+	"io/fs"
+)
+
+//go:embed all:dist
+var distFS embed.FS
+
+// Dist returns the embedded SPA filesystem rooted at dist/.
+func Dist() fs.FS {
+	sub, err := fs.Sub(distFS, "dist")
+	if err != nil {
+		panic(err)
+	}
+	return sub
+}
@@ -0,0 +1,49 @@
+// Package apikey handles generation and hashing of public-API keys.
+//
+// A key looks like "og_live_<random>". Only the SHA-256 hash is ever persisted;
+// the plaintext is returned once at creation time and cannot be recovered.
+package apikey
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"strings"
+)
+
+// Prefix is the human-readable scheme prefix every key carries.
+const Prefix = "og_live_"
+
+// prefixLen is how many leading characters (including Prefix) are stored in
+// api_key.key_prefix for identifying a key without revealing its secret.
+const prefixLen = 12
+
+// Generate returns a new random key (plaintext), its SHA-256 hash, and a short
+// display prefix. The plaintext must be shown to the caller exactly once.
+func Generate() (key, hash, displayPrefix string, err error) {
+	buf := make([]byte, 24)
+	if _, err = rand.Read(buf); err != nil {
+		return "", "", "", err
+	}
+	// URL-safe, no padding => stable, copy-pasteable token body.
+	body := base64.RawURLEncoding.EncodeToString(buf)
+	key = Prefix + body
+	hash = Hash(key)
+	displayPrefix = key
+	if len(displayPrefix) > prefixLen {
+		displayPrefix = displayPrefix[:prefixLen]
+	}
+	return key, hash, displayPrefix, nil
+}
+
+// Hash returns the hex-encoded SHA-256 of a key, used for storage and lookup.
+func Hash(key string) string {
+	sum := sha256.Sum256([]byte(strings.TrimSpace(key)))
+	return hex.EncodeToString(sum[:])
+}
+
+// Looks like a key issued by this service (cheap pre-check before hashing).
+func IsWellFormed(key string) bool {
+	return strings.HasPrefix(key, Prefix) && len(key) > len(Prefix)+8
+}
@@ -0,0 +1,60 @@
+package apikey
+
+import "testing"
+
+func TestGenerate(t *testing.T) {
+	key, hash, prefix, err := Generate()
+	if err != nil {
+		t.Fatalf("Generate: %v", err)
+	}
+	if !IsWellFormed(key) {
+		t.Fatalf("generated key not well-formed: %q", key)
+	}
+	if Hash(key) != hash {
+		t.Fatalf("Hash(key) != returned hash")
+	}
+	if len(prefix) != prefixLen || key[:prefixLen] != prefix {
+		t.Fatalf("prefix %q not a %d-char prefix of key %q", prefix, prefixLen, key)
+	}
+	if len(hash) != 64 {
+		t.Fatalf("hash not hex sha-256: %q", hash)
+	}
+}
+
+func TestGenerateUnique(t *testing.T) {
+	seen := map[string]bool{}
+	for i := 0; i < 100; i++ {
+		k, _, _, err := Generate()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if seen[k] {
+			t.Fatalf("duplicate key generated: %q", k)
+		}
+		seen[k] = true
+	}
+}
+
+func TestHashStableAndTrimmed(t *testing.T) {
+	if Hash("og_live_abc") != Hash("  og_live_abc  ") {
+		t.Fatal("Hash should ignore surrounding whitespace")
+	}
+	if Hash("a") == Hash("b") {
+		t.Fatal("distinct inputs must hash differently")
+	}
+}
+
+func TestIsWellFormed(t *testing.T) {
+	cases := map[string]bool{
+		"og_live_abcdefghijkl": true,  // body longer than 8 chars
+		"og_live_":             false, // empty body
+		"og_live_abc":          false, // body too short
+		"nope_abcdefghijkl":    false, // wrong prefix
+		"":                     false,
+	}
+	for in, want := range cases {
+		if got := IsWellFormed(in); got != want {
+			t.Errorf("IsWellFormed(%q) = %v, want %v", in, got, want)
+		}
+	}
+}
@@ -0,0 +1,126 @@
+// Package auth provides minimal single-account authentication for the admin
+// console: a bcrypt-verified login and a stdlib HMAC-SHA256 signed token
+// (JWT-compatible) plus a chi middleware that guards write routes.
+package auth
+
+import (
+	"context"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"strings"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+// Authenticator holds the single admin credential and token signing secret.
+type Authenticator struct {
+	username     string
+	passwordHash []byte
+	secret       []byte
+	ttl          time.Duration
+}
+
+// New builds an Authenticator. passwordHash must be a bcrypt hash.
+func New(username string, passwordHash, secret []byte, ttl time.Duration) *Authenticator {
+	return &Authenticator{username: username, passwordHash: passwordHash, secret: secret, ttl: ttl}
+}
+
+// ErrInvalidCredentials is returned when login fails.
+var ErrInvalidCredentials = errors.New("invalid credentials")
+
+// Login verifies the username/password and returns a signed token on success.
+func (a *Authenticator) Login(username, password string) (string, error) {
+	if username != a.username {
+		// Still run bcrypt to keep timing roughly constant.
+		_ = bcrypt.CompareHashAndPassword(a.passwordHash, []byte(password))
+		return "", ErrInvalidCredentials
+	}
+	if err := bcrypt.CompareHashAndPassword(a.passwordHash, []byte(password)); err != nil {
+		return "", ErrInvalidCredentials
+	}
+	return a.issue(username)
+}
+
+type claims struct {
+	Sub string `json:"sub"`
+	Exp int64  `json:"exp"`
+}
+
+func b64(b []byte) string { return base64.RawURLEncoding.EncodeToString(b) }
+
+func (a *Authenticator) sign(signingInput string) string {
+	mac := hmac.New(sha256.New, a.secret)
+	mac.Write([]byte(signingInput))
+	return b64(mac.Sum(nil))
+}
+
+func (a *Authenticator) issue(sub string) (string, error) {
+	header := b64([]byte(`{"alg":"HS256","typ":"JWT"}`))
+	payloadJSON, err := json.Marshal(claims{Sub: sub, Exp: time.Now().Add(a.ttl).Unix()})
+	if err != nil {
+		return "", err
+	}
+	payload := b64(payloadJSON)
+	signingInput := header + "." + payload
+	return signingInput + "." + a.sign(signingInput), nil
+}
+
+// Verify checks a token's signature and expiry, returning the subject.
+func (a *Authenticator) Verify(token string) (string, error) {
+	parts := strings.Split(token, ".")
+	if len(parts) != 3 {
+		return "", errors.New("malformed token")
+	}
+	signingInput := parts[0] + "." + parts[1]
+	if !hmac.Equal([]byte(a.sign(signingInput)), []byte(parts[2])) {
+		return "", errors.New("bad signature")
+	}
+	payload, err := base64.RawURLEncoding.DecodeString(parts[1])
+	if err != nil {
+		return "", err
+	}
+	var c claims
+	if err := json.Unmarshal(payload, &c); err != nil {
+		return "", err
+	}
+	if time.Now().Unix() >= c.Exp {
+		return "", errors.New("token expired")
+	}
+	return c.Sub, nil
+}
+
+type ctxKey int
+
+const userKey ctxKey = 0
+
+// UserFrom returns the authenticated subject from the request context.
+func UserFrom(ctx context.Context) string {
+	if v, ok := ctx.Value(userKey).(string); ok {
+		return v
+	}
+	return ""
+}
+
+// Middleware rejects requests without a valid Bearer token.
+func (a *Authenticator) Middleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		h := r.Header.Get("Authorization")
+		token := strings.TrimPrefix(h, "Bearer ")
+		if token == h || token == "" {
+			http.Error(w, `{"error":{"code":"unauthorized","message":"missing token"}}`, http.StatusUnauthorized)
+			return
+		}
+		sub, err := a.Verify(token)
+		if err != nil {
+			http.Error(w, `{"error":{"code":"unauthorized","message":"invalid token"}}`, http.StatusUnauthorized)
+			return
+		}
+		ctx := context.WithValue(r.Context(), userKey, sub)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
@@ -0,0 +1,62 @@
+package auth
+
+import (
+	"testing"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+func newTestAuth(t *testing.T, ttl time.Duration) *Authenticator {
+	t.Helper()
+	hash, err := bcrypt.GenerateFromPassword([]byte("s3cret"), bcrypt.MinCost)
+	if err != nil {
+		t.Fatalf("hash: %v", err)
+	}
+	return New("admin", hash, []byte("test-secret"), ttl)
+}
+
+func TestLoginAndVerify(t *testing.T) {
+	a := newTestAuth(t, time.Hour)
+
+	token, err := a.Login("admin", "s3cret")
+	if err != nil {
+		t.Fatalf("login: %v", err)
+	}
+	sub, err := a.Verify(token)
+	if err != nil {
+		t.Fatalf("verify: %v", err)
+	}
+	if sub != "admin" {
+		t.Fatalf("sub = %q, want admin", sub)
+	}
+}
+
+func TestLoginWrongCredentials(t *testing.T) {
+	a := newTestAuth(t, time.Hour)
+	if _, err := a.Login("admin", "nope"); err == nil {
+		t.Fatal("expected error for wrong password")
+	}
+	if _, err := a.Login("other", "s3cret"); err == nil {
+		t.Fatal("expected error for wrong username")
+	}
+}
+
+func TestVerifyRejectsTampered(t *testing.T) {
+	a := newTestAuth(t, time.Hour)
+	token, _ := a.Login("admin", "s3cret")
+	if _, err := a.Verify(token + "x"); err == nil {
+		t.Fatal("expected bad signature error")
+	}
+	if _, err := a.Verify("not.a.token"); err == nil {
+		t.Fatal("expected malformed/decoding error")
+	}
+}
+
+func TestVerifyRejectsExpired(t *testing.T) {
+	a := newTestAuth(t, -time.Minute)
+	token, _ := a.Login("admin", "s3cret")
+	if _, err := a.Verify(token); err == nil {
+		t.Fatal("expected expired token error")
+	}
+}
@@ -2,26 +2,44 @@ package config

 import (
 	"os"
+	"strconv"
 )

 // Config holds runtime configuration for the OpenGoods API server.
 // Values are read from environment variables with sensible defaults so the
 // server can boot in a local Docker Compose setup without extra configuration.
 type Config struct {
-	Addr        string
-	DatabaseURL string
-	RedisURL    string
+	Addr                      string
+	DatabaseURL               string
+	RedisURL                  string
+	AnonRateLimitPerMin       int
+	AnonTotalQuota            int
+	RegisteredRateLimitPerMin int
+	RegisteredQuotaTotal      int
 }

 // Load reads configuration from the environment.
 func Load() Config {
 	return Config{
-		Addr:        getenv("OPENGOODS_ADDR", ":8080"),
-		DatabaseURL: getenv("OPENGOODS_DATABASE_URL", "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"),
-		RedisURL:    getenv("OPENGOODS_REDIS_URL", "redis://localhost:6379/0"),
+		Addr:                      getenv("OPENGOODS_ADDR", ":8080"),
+		DatabaseURL:               getenv("OPENGOODS_DATABASE_URL", "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"),
+		RedisURL:                  getenv("OPENGOODS_REDIS_URL", "redis://localhost:6379/0"),
+		AnonRateLimitPerMin:       getenvInt("OPENGOODS_ANON_RATE_LIMIT_PER_MIN", 60),
+		AnonTotalQuota:            getenvInt("OPENGOODS_ANON_TOTAL_QUOTA", 1000),
+		RegisteredRateLimitPerMin: getenvInt("OPENGOODS_REGISTERED_RATE_LIMIT_PER_MIN", 300),
+		RegisteredQuotaTotal:      getenvInt("OPENGOODS_REGISTERED_QUOTA_TOTAL", 100000),
 	}
 }

+func getenvInt(key string, fallback int) int {
+	if v, ok := os.LookupEnv(key); ok && v != "" {
+		if n, err := strconv.Atoi(v); err == nil && n > 0 {
+			return n
+		}
+	}
+	return fallback
+}
+
 func getenv(key, fallback string) string {
 	if v, ok := os.LookupEnv(key); ok && v != "" {
 		return v
@@ -0,0 +1,110 @@
+// Package gtin validates and normalizes GS1 trade item numbers (GTIN-8/12/13/14).
+// Only globally-unique GS1 codes are accepted: store-internal / variable-weight /
+// coupon codes (which are not globally unique) are rejected on purpose.
+package gtin
+
+import (
+	"errors"
+	"strings"
+)
+
+// Validation errors.
+var (
+	ErrEmpty      = errors.New("条码不能为空")
+	ErrFormat     = errors.New("条码必须为 8/12/13/14 位数字")
+	ErrCheck      = errors.New("条码校验位不正确")
+	ErrRestricted = errors.New("店内码/变量重量码/优惠券码等非全球唯一码，不予收录")
+)
+
+// Normalize trims and validates a GTIN, returning the cleaned digit string.
+// It enforces length, the GS1 mod-10 check digit, and rejects restricted
+// (non-globally-unique) number ranges.
+func Normalize(raw string) (string, error) {
+	s := strings.TrimSpace(raw)
+	if s == "" {
+		return "", ErrEmpty
+	}
+	for _, c := range s {
+		if c < '0' || c > '9' {
+			return "", ErrFormat
+		}
+	}
+	switch len(s) {
+	case 8, 12, 13, 14:
+	default:
+		return "", ErrFormat
+	}
+	if !validCheckDigit(s) {
+		return "", ErrCheck
+	}
+	if restricted(s) {
+		return "", ErrRestricted
+	}
+	return s, nil
+}
+
+// InferType returns the conventional GTIN type label for a normalized code.
+func InferType(s string) string {
+	switch len(s) {
+	case 8:
+		return "EAN8"
+	case 12:
+		return "UPC"
+	case 14:
+		return "GTIN14"
+	default:
+		return "EAN13"
+	}
+}
+
+// validCheckDigit verifies the trailing GS1 mod-10 check digit. The digit
+// immediately left of the check digit carries weight 3, then weights alternate.
+func validCheckDigit(s string) bool {
+	n := len(s)
+	sum := 0
+	for i := 0; i < n-1; i++ {
+		d := int(s[i] - '0')
+		if (n-1-i)%2 == 1 {
+			sum += d * 3
+		} else {
+			sum += d
+		}
+	}
+	check := (10 - (sum % 10)) % 10
+	return check == int(s[n-1]-'0')
+}
+
+// restricted reports whether a (length/check-digit valid) code falls in a
+// number range reserved for non-globally-unique use.
+func restricted(s string) bool {
+	switch len(s) {
+	case 13:
+		p2 := s[:2]
+		switch {
+		case s[0] == '2': // 20-29 restricted distribution / in-store
+			return true
+		case p2 == "02": // 020-029 variable-measure within a store
+			return true
+		case p2 == "04": // 040-049 restricted circulation within a company
+			return true
+		case p2 == "05": // 050-059 coupons
+			return true
+		case p2 == "98" || p2 == "99": // 980-989/99 coupons & refund receipts
+			return true
+		}
+	case 12: // UPC-A: leading number-system digit
+		switch s[0] {
+		case '2': // in-store / random weight
+			return true
+		case '4': // unrestricted in-store use
+			return true
+		case '5': // coupons
+			return true
+		}
+	case 8: // EAN-8: 0/2 prefixes reserved for in-store use
+		if s[0] == '0' || s[0] == '2' {
+			return true
+		}
+	}
+	return false
+}
@@ -0,0 +1,49 @@
+package gtin
+
+import "testing"
+
+func TestNormalizeValid(t *testing.T) {
+	cases := []struct{ in, want, typ string }{
+		{" 5449000000996 ", "5449000000996", "EAN13"}, // Coca-Cola EAN-13
+		{"3017624010701", "3017624010701", "EAN13"},   // Nutella EAN-13
+		{"036000291452", "036000291452", "UPC"},       // UPC-A
+		{"96385074", "96385074", "EAN8"},              // EAN-8
+		{"00012345600012", "00012345600012", "GTIN14"},
+		{"6901234567892", "6901234567892", "EAN13"}, // China 690 prefix
+	}
+	for _, c := range cases {
+		got, err := Normalize(c.in)
+		if err != nil {
+			t.Errorf("Normalize(%q) unexpected error: %v", c.in, err)
+			continue
+		}
+		if got != c.want {
+			t.Errorf("Normalize(%q) = %q, want %q", c.in, got, c.want)
+		}
+		if InferType(got) != c.typ {
+			t.Errorf("InferType(%q) = %q, want %q", got, InferType(got), c.typ)
+		}
+	}
+}
+
+func TestNormalizeRejects(t *testing.T) {
+	cases := []struct {
+		in   string
+		want error
+	}{
+		{"", ErrEmpty},
+		{"12ab5678", ErrFormat},
+		{"12345", ErrFormat},
+		{"5449000000997", ErrCheck},      // bad check digit
+		{"2012345678903", ErrRestricted}, // 20-29 in-store EAN-13
+		{"0212345678909", ErrRestricted}, // 02x variable measure
+		{"212345678909", ErrRestricted},  // UPC number system 2
+		{"02345673", ErrRestricted},      // EAN-8 in-store
+	}
+	for _, c := range cases {
+		_, err := Normalize(c.in)
+		if err != c.want {
+			t.Errorf("Normalize(%q) error = %v, want %v", c.in, err, c.want)
+		}
+	}
+}
@@ -0,0 +1,128 @@
+package handler
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+	"regexp"
+	"strings"
+
+	"github.com/baicai2026-baicai/goods/api/internal/store"
+)
+
+// emailRe is a deliberately permissive sanity check; real validation is the
+// unique constraint plus the user being able to receive their own key.
+var emailRe = regexp.MustCompile(`^[^@\s]+@[^@\s]+\.[^@\s]+$`)
+
+const minPasswordLen = 8
+
+type credentials struct {
+	Email    string `json:"email"`
+	Password string `json:"password"`
+}
+
+func decodeCredentials(w http.ResponseWriter, r *http.Request) (credentials, bool) {
+	var c credentials
+	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 4096)).Decode(&c); err != nil {
+		writeError(w, r, http.StatusBadRequest, "invalid_body", "请求格式无效")
+		return credentials{}, false
+	}
+	c.Email = strings.TrimSpace(c.Email)
+	if !emailRe.MatchString(c.Email) {
+		writeError(w, r, http.StatusBadRequest, "invalid_email", "邮箱格式无效")
+		return credentials{}, false
+	}
+	if len(c.Password) < minPasswordLen {
+		writeError(w, r, http.StatusBadRequest, "weak_password", "密码至少需要 8 位")
+		return credentials{}, false
+	}
+	return c, true
+}
+
+// keyResponse is returned whenever a fresh plaintext key is issued; the key is
+// shown exactly once and cannot be recovered afterwards.
+type keyResponse struct {
+	Email           string `json:"email"`
+	APIKey          string `json:"api_key"`
+	KeyPrefix       string `json:"key_prefix"`
+	RateLimitPerMin int    `json:"rate_limit_per_min"`
+	QuotaTotal      int64  `json:"quota_total"`
+}
+
+// Register creates an account and issues its first API key. POST {email, password}.
+func (h *Handler) Register(w http.ResponseWriter, r *http.Request) {
+	c, ok := decodeCredentials(w, r)
+	if !ok {
+		return
+	}
+	key, acct, err := h.store.RegisterUser(r.Context(), c.Email, c.Password, h.regRatePerMin, h.regQuotaTotal)
+	if errors.Is(err, store.ErrEmailTaken) {
+		writeError(w, r, http.StatusConflict, "email_taken", "该邮箱已注册，请直接登录查看或重置密钥")
+		return
+	}
+	if h.handleErr(w, r, err) {
+		return
+	}
+	writeJSON(w, http.StatusCreated, keyResponse{
+		Email:           acct.Email,
+		APIKey:          key,
+		KeyPrefix:       acct.KeyPrefix,
+		RateLimitPerMin: acct.RateLimitPerMin,
+		QuotaTotal:      acct.QuotaTotal,
+	})
+}
+
+// AccountInfo verifies credentials and returns the account's key metadata plus
+// cumulative usage. POST {email, password}. The plaintext key is not returned.
+func (h *Handler) AccountInfo(w http.ResponseWriter, r *http.Request) {
+	c, ok := decodeCredentials(w, r)
+	if !ok {
+		return
+	}
+	acct, err := h.store.Authenticate(r.Context(), c.Email, c.Password)
+	if errors.Is(err, store.ErrNotFound) {
+		writeError(w, r, http.StatusUnauthorized, "invalid_credentials", "邮箱或密码错误")
+		return
+	}
+	if h.handleErr(w, r, err) {
+		return
+	}
+	used := h.limiter.TotalUsed(r.Context(), acct.KeyID)
+	remaining := acct.QuotaTotal - used
+	if remaining < 0 {
+		remaining = 0
+	}
+	writeJSON(w, http.StatusOK, map[string]any{
+		"email":              acct.Email,
+		"key_prefix":         acct.KeyPrefix,
+		"rate_limit_per_min": acct.RateLimitPerMin,
+		"quota_total":        acct.QuotaTotal,
+		"quota_used":         used,
+		"quota_remaining":    remaining,
+	})
+}
+
+// RegenerateKey revokes the account's current key and issues a new one, carrying
+// over cumulative usage so the quota cannot be reset. POST {email, password}.
+func (h *Handler) RegenerateKey(w http.ResponseWriter, r *http.Request) {
+	c, ok := decodeCredentials(w, r)
+	if !ok {
+		return
+	}
+	key, acct, oldKeyID, err := h.store.RegenerateKey(r.Context(), c.Email, c.Password, h.regRatePerMin, h.regQuotaTotal)
+	if errors.Is(err, store.ErrNotFound) {
+		writeError(w, r, http.StatusUnauthorized, "invalid_credentials", "邮箱或密码错误")
+		return
+	}
+	if h.handleErr(w, r, err) {
+		return
+	}
+	h.limiter.CopyTotal(r.Context(), oldKeyID, acct.KeyID)
+	writeJSON(w, http.StatusOK, keyResponse{
+		Email:           acct.Email,
+		APIKey:          key,
+		KeyPrefix:       acct.KeyPrefix,
+		RateLimitPerMin: acct.RateLimitPerMin,
+		QuotaTotal:      acct.QuotaTotal,
+	})
+}
@@ -0,0 +1,149 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/redis/go-redis/v9"
+
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
+	"github.com/baicai2026-baicai/goods/api/internal/store"
+)
+
+func cleanupCounter(t *testing.T, subject string) {
+	t.Helper()
+	redisURL := os.Getenv("OPENGOODS_REDIS_URL")
+	if redisURL == "" {
+		redisURL = "redis://localhost:6379/0"
+	}
+	opt, err := redis.ParseURL(redisURL)
+	if err != nil {
+		return
+	}
+	rdb := redis.NewClient(opt)
+	defer rdb.Close()
+	rdb.Del(context.Background(), "usage:total:"+subject)
+}
+
+// newQuotaHandler builds a handler backed by the test DB and a live Redis
+// limiter, with a small anonymous quota so exhaustion is cheap to exercise.
+func newQuotaHandler(t *testing.T, anonQuota int) *Handler {
+	t.Helper()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Skipf("no database: %v", err)
+	}
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		t.Skipf("database not reachable: %v", err)
+	}
+	var hasUser bool
+	if err := pool.QueryRow(ctx, "SELECT to_regclass('public.app_user') IS NOT NULL").Scan(&hasUser); err != nil || !hasUser {
+		pool.Close()
+		t.Skip("migrations not applied")
+	}
+	redisURL := os.Getenv("OPENGOODS_REDIS_URL")
+	if redisURL == "" {
+		redisURL = "redis://localhost:6379/0"
+	}
+	limiter := ratelimit.New(redisURL)
+	pingCtx, pingCancel := context.WithTimeout(context.Background(), time.Second)
+	defer pingCancel()
+	if err := limiter.Ping(pingCtx); err != nil {
+		pool.Close()
+		t.Skipf("redis not reachable: %v", err)
+	}
+	t.Cleanup(pool.Close)
+	return New(store.New(pool), nil).
+		WithRateLimit(limiter, 1000).
+		WithQuotas(anonQuota, 300, 100000)
+}
+
+func cleanupAccount(t *testing.T, email string) {
+	t.Helper()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	ctx := context.Background()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		return
+	}
+	defer pool.Close()
+	_, _ = pool.Exec(ctx, "DELETE FROM app_user WHERE lower(email)=lower($1)", email)
+	_, _ = pool.Exec(ctx, "DELETE FROM api_key WHERE owner_email=$1", email)
+}
+
+func TestAnonTotalQuotaExhausts(t *testing.T) {
+	h := newQuotaHandler(t, 3)
+	// Unique client IP so the lifetime counter starts fresh for this test; the
+	// counter never expires, so drop it afterwards to keep runs independent.
+	n := time.Now().UnixNano()
+	ip := fmt.Sprintf("203.%d.%d.%d", n/65536%256, n/256%256, n%256)
+	t.Cleanup(func() { cleanupCounter(t, "ip:"+ip) })
+	call := func() *httptest.ResponseRecorder {
+		req := httptest.NewRequest(http.MethodGet, "/api/"+APIVersion+"/stats", nil)
+		req.RemoteAddr = ip + ":12345"
+		rec := httptest.NewRecorder()
+		h.Router().ServeHTTP(rec, req)
+		return rec
+	}
+	for i := 1; i <= 3; i++ {
+		if rec := call(); rec.Code != http.StatusOK {
+			t.Fatalf("call %d should be allowed, got %d (%s)", i, rec.Code, rec.Body.String())
+		}
+	}
+	rec := call()
+	if rec.Code != http.StatusForbidden {
+		t.Fatalf("4th call should be 403 quota_exhausted, got %d (%s)", rec.Code, rec.Body.String())
+	}
+	if !strings.Contains(rec.Body.String(), "quota_exhausted") {
+		t.Fatalf("expected quota_exhausted error, got %s", rec.Body.String())
+	}
+}
+
+func TestRegisterIssuesHigherQuotaKey(t *testing.T) {
+	h := newQuotaHandler(t, 1000)
+	email := fmt.Sprintf("h-user-%d@example.com", time.Now().UnixNano())
+	t.Cleanup(func() { cleanupAccount(t, email) })
+
+	body := fmt.Sprintf(`{"email":%q,"password":"supersecret"}`, email)
+	req := httptest.NewRequest(http.MethodPost, "/api/"+APIVersion+"/register", strings.NewReader(body))
+	req.RemoteAddr = "198.51.100.7:9999"
+	rec := httptest.NewRecorder()
+	h.Router().ServeHTTP(rec, req)
+	if rec.Code != http.StatusCreated {
+		t.Fatalf("register status = %d (%s)", rec.Code, rec.Body.String())
+	}
+	var resp keyResponse
+	if err := json.NewDecoder(rec.Body).Decode(&resp); err != nil {
+		t.Fatal(err)
+	}
+	if resp.APIKey == "" || resp.QuotaTotal != 100000 || resp.RateLimitPerMin != 300 {
+		t.Fatalf("unexpected register response: %+v", resp)
+	}
+
+	// A second registration with the same email conflicts.
+	req2 := httptest.NewRequest(http.MethodPost, "/api/"+APIVersion+"/register", strings.NewReader(body))
+	req2.RemoteAddr = "198.51.100.7:9999"
+	rec2 := httptest.NewRecorder()
+	h.Router().ServeHTTP(rec2, req2)
+	if rec2.Code != http.StatusConflict {
+		t.Fatalf("duplicate register status = %d (%s)", rec2.Code, rec2.Body.String())
+	}
+}
@@ -5,33 +5,102 @@
 package handler

 import (
+	_ "embed"
 	"encoding/json"
 	"errors"
+	"io/fs"
 	"net/http"
 	"strconv"
+	"strings"

 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"

+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
 	"github.com/baicai2026-baicai/goods/api/internal/store"
 )

+//go:embed openapi.json
+var openAPISpec []byte
+
 // APIVersion is the current public API version prefix.
 const APIVersion = "v1"

+// QualifiedMinScore is the quality_score threshold at or above which a product
+// record is considered "qualified" (合格) for public stats.
+const QualifiedMinScore = 0.6
+
 const (
 	defaultPageSize = 20
 	maxPageSize     = 100
+
+	// defaultAnonLimit is the per-minute request budget for unauthenticated
+	// callers (identified by client IP) when none is configured.
+	defaultAnonLimit = 60
+
+	// defaultAnonTotalQuota is the lifetime number of calls an anonymous caller
+	// (by IP) may make before being asked to register for a higher quota.
+	defaultAnonTotalQuota = 1000
+
+	// defaultRegRatePerMin / defaultRegQuotaTotal are the per-minute budget and
+	// cumulative quota granted to a self-registered API key.
+	defaultRegRatePerMin = 300
+	defaultRegQuotaTotal = 100000
+
+	// registerRatePerMin caps account registration/login attempts per IP to
+	// curb abuse; these endpoints sit outside the metered quota group.
+	registerRatePerMin = 10
 )

 // Handler holds dependencies shared by the HTTP routes.
 type Handler struct {
-	store *store.Store
+	store          *store.Store
+	spa            fs.FS
+	limiter        *ratelimit.Limiter
+	anonLimit      int
+	anonTotalQuota int64
+	regRatePerMin  int
+	regQuotaTotal  int64
 }

-// New constructs a Handler backed by the given store.
-func New(s *store.Store) *Handler {
-	return &Handler{store: s}
+// New constructs a Handler backed by the given store. spa may be nil (JSON-only).
+// Rate limiting is disabled until WithRateLimit is called.
+func New(s *store.Store, spa fs.FS) *Handler {
+	return &Handler{
+		store:          s,
+		spa:            spa,
+		anonLimit:      defaultAnonLimit,
+		anonTotalQuota: defaultAnonTotalQuota,
+		regRatePerMin:  defaultRegRatePerMin,
+		regQuotaTotal:  defaultRegQuotaTotal,
+	}
+}
+
+// WithRateLimit attaches a Redis-backed limiter and the anonymous per-minute
+// budget, enabling rate limiting + usage tracking on the public API routes.
+// A non-positive anonPerMin keeps the default.
+func (h *Handler) WithRateLimit(l *ratelimit.Limiter, anonPerMin int) *Handler {
+	h.limiter = l
+	if anonPerMin > 0 {
+		h.anonLimit = anonPerMin
+	}
+	return h
+}
+
+// WithQuotas configures the cumulative free quota for anonymous callers and the
+// per-minute rate + cumulative quota self-registered keys receive. Non-positive
+// values keep the defaults.
+func (h *Handler) WithQuotas(anonTotal, regPerMin, regTotal int) *Handler {
+	if anonTotal > 0 {
+		h.anonTotalQuota = int64(anonTotal)
+	}
+	if regPerMin > 0 {
+		h.regRatePerMin = regPerMin
+	}
+	if regTotal > 0 {
+		h.regQuotaTotal = int64(regTotal)
+	}
+	return h
 }

 // Router builds the top-level HTTP handler with middleware and routes mounted.
@@ -44,26 +113,84 @@ func (h *Handler) Router() http.Handler {
 	r.Get("/healthz", h.Healthz)

 	r.Route("/api/"+APIVersion, func(r chi.Router) {
-		r.Route("/products", func(r chi.Router) {
-			r.Get("/barcode/{gtin}", h.ProductByBarcode)
-			r.Get("/search", h.SearchProducts)
-			r.Get("/{id}", h.ProductByID)
-			r.Get("/{id}/nutriments", h.ProductNutriments)
-			r.Get("/{id}/msrp", h.ProductMSRP)
+		// Machine-readable spec; not rate limited so tooling can always fetch it.
+		r.Get("/openapi.json", h.OpenAPI)
+
+		r.Group(func(r chi.Router) {
+			r.Use(h.rateLimit)
+			r.Route("/products", func(r chi.Router) {
+				r.Get("/barcode/{gtin}", h.ProductByBarcode)
+				r.Get("/search", h.SearchProducts)
+				r.Get("/{id}", h.ProductByID)
+				r.Get("/{id}/nutriments", h.ProductNutriments)
+				r.Get("/{id}/msrp", h.ProductMSRP)
+			})
+			r.Get("/brands", h.ListBrands)
+			r.Get("/categories", h.ListCategories)
+			r.Get("/sources/{id}", h.SourceByID)
+			r.Get("/stats", h.Stats)
+		})
+
+		// Self-service account routes. Lightly IP-throttled to curb abuse but
+		// outside the metered quota group so a user can always register or
+		// check their key even after exhausting the free anonymous quota.
+		r.Group(func(r chi.Router) {
+			r.Use(h.registerLimit)
+			r.Post("/register", h.Register)
+			r.Post("/account", h.AccountInfo)
+			r.Post("/account/regenerate", h.RegenerateKey)
 		})
-		r.Get("/brands", h.ListBrands)
-		r.Get("/categories", h.ListCategories)
-		r.Get("/sources/{id}", h.SourceByID)
 	})

+	// Public SPA (homepage + search + contribute). API routes above take
+	// precedence; everything else falls back to the embedded single-page app.
+	if h.spa != nil {
+		r.Handle("/*", http.HandlerFunc(h.serveSPA))
+	}
+
 	return r
 }

+func (h *Handler) serveSPA(w http.ResponseWriter, r *http.Request) {
+	rel := strings.TrimPrefix(r.URL.Path, "/")
+	if rel == "" {
+		rel = "index.html"
+	}
+	if f, err := h.spa.Open(rel); err == nil {
+		f.Close()
+		http.FileServer(http.FS(h.spa)).ServeHTTP(w, r)
+		return
+	}
+	// SPA fallback: serve index.html for client-side routes.
+	data, err := fs.ReadFile(h.spa, "index.html")
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	_, _ = w.Write(data)
+}
+
 // Healthz reports liveness of the service.
 func (h *Handler) Healthz(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
 }

+// Stats returns catalog totals and the count of qualified records.
+func (h *Handler) Stats(w http.ResponseWriter, r *http.Request) {
+	st, err := h.store.Stats(r.Context(), QualifiedMinScore)
+	if h.handleErr(w, r, err) {
+		return
+	}
+	writeJSON(w, http.StatusOK, st)
+}
+
+// OpenAPI serves the embedded OpenAPI 3 specification for the public API.
+func (h *Handler) OpenAPI(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	_, _ = w.Write(openAPISpec)
+}
+
 // ProductByBarcode returns a product by its GTIN.
 func (h *Handler) ProductByBarcode(w http.ResponseWriter, r *http.Request) {
 	p, err := h.store.ProductByGTIN(r.Context(), chi.URLParam(r, "gtin"))
@@ -82,13 +209,19 @@ func (h *Handler) ProductByID(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, p)
 }

-// SearchProducts runs a fuzzy name search with optional category filter + paging.
+// SearchProducts runs a trigram-fuzzy name search with optional
+// category/brand/country filters, ranked by relevance, plus paging.
 func (h *Handler) SearchProducts(w http.ResponseWriter, r *http.Request) {
-	q := r.URL.Query().Get("q")
-	category := r.URL.Query().Get("category")
+	qv := r.URL.Query()
+	filters := store.SearchFilters{
+		Query:    strings.TrimSpace(qv.Get("q")),
+		Category: strings.TrimSpace(qv.Get("category")),
+		Brand:    strings.TrimSpace(qv.Get("brand")),
+		Country:  strings.TrimSpace(qv.Get("country")),
+	}
 	page, size := pageParams(r)

-	items, total, err := h.store.SearchProducts(r.Context(), q, category, size, (page-1)*size)
+	items, total, err := h.store.SearchProducts(r.Context(), filters, size, (page-1)*size)
 	if h.handleErr(w, r, err) {
 		return
 	}
@@ -61,7 +61,7 @@ func newTestHandler(t *testing.T) (*Handler, string) {
 		_, _ = pool.Exec(context.Background(), "DELETE FROM product WHERE gtin=$1", gtin)
 		pool.Close()
 	})
-	return New(store.New(pool)), gtin
+	return New(store.New(pool), nil), gtin
 }

 func doGET(t *testing.T, h *Handler, path string) *httptest.ResponseRecorder {
@@ -116,6 +116,101 @@ func TestSearchProducts(t *testing.T) {
 	}
 }

+func TestSearchFuzzyAndFilters(t *testing.T) {
+	h, _ := newTestHandler(t)
+	ctx := context.Background()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Skipf("no database: %v", err)
+	}
+	defer pool.Close()
+
+	_, err = pool.Exec(ctx,
+		"INSERT INTO brand (name, normalized_name) VALUES ('ZZ Test Brand','zz test brand') ON CONFLICT DO NOTHING")
+	if err != nil {
+		t.Fatalf("seed brand: %v", err)
+	}
+	_, err = pool.Exec(ctx, `
+		INSERT INTO product (name, brand_id, country_of_origin, quality_score, status)
+		VALUES ('ZZ Hazelnut Chocolate', (SELECT id FROM brand WHERE name='ZZ Test Brand'), 'Testland', 0.5, 'active')`)
+	if err != nil {
+		t.Fatalf("seed product: %v", err)
+	}
+	t.Cleanup(func() {
+		_, _ = pool.Exec(ctx, "DELETE FROM product WHERE name='ZZ Hazelnut Chocolate'")
+		_, _ = pool.Exec(ctx, "DELETE FROM brand WHERE name='ZZ Test Brand'")
+	})
+
+	decode := func(path string) []store.ProductSummary {
+		rec := doGET(t, h, path)
+		if rec.Code != http.StatusOK {
+			t.Fatalf("%s -> status %d", path, rec.Code)
+		}
+		var body struct {
+			Items []store.ProductSummary `json:"items"`
+		}
+		if err := json.NewDecoder(rec.Body).Decode(&body); err != nil {
+			t.Fatal(err)
+		}
+		return body.Items
+	}
+	has := func(items []store.ProductSummary, name string) *store.ProductSummary {
+		for i := range items {
+			if items[i].Name == name {
+				return &items[i]
+			}
+		}
+		return nil
+	}
+
+	// Typo "choclate" should fuzzy-match via word_similarity and carry a score.
+	got := has(decode("/api/"+APIVersion+"/products/search?q=choclate"), "ZZ Hazelnut Chocolate")
+	if got == nil {
+		t.Fatal("fuzzy query 'choclate' did not match 'ZZ Hazelnut Chocolate'")
+	}
+	if got.Score == nil || *got.Score <= 0 {
+		t.Fatalf("expected positive fuzzy score, got %v", got.Score)
+	}
+
+	// Brand filter.
+	if has(decode("/api/"+APIVersion+"/products/search?brand=ZZ+Test+Brand"), "ZZ Hazelnut Chocolate") == nil {
+		t.Fatal("brand filter did not return the product")
+	}
+	// Country filter (case-insensitive prefix).
+	if has(decode("/api/"+APIVersion+"/products/search?country=test"), "ZZ Hazelnut Chocolate") == nil {
+		t.Fatal("country filter did not return the product")
+	}
+	// Non-matching country excludes it.
+	if has(decode("/api/"+APIVersion+"/products/search?country=france"), "ZZ Hazelnut Chocolate") != nil {
+		t.Fatal("country filter 'france' should not return the product")
+	}
+}
+
+func TestOpenAPISpec(t *testing.T) {
+	h, _ := newTestHandler(t)
+	rec := doGET(t, h, "/api/"+APIVersion+"/openapi.json")
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d", rec.Code)
+	}
+	var spec struct {
+		OpenAPI string         `json:"openapi"`
+		Paths   map[string]any `json:"paths"`
+	}
+	if err := json.NewDecoder(rec.Body).Decode(&spec); err != nil {
+		t.Fatalf("openapi.json is not valid JSON: %v", err)
+	}
+	if spec.OpenAPI == "" || len(spec.Paths) == 0 {
+		t.Fatalf("unexpected spec: %+v", spec)
+	}
+	if _, ok := spec.Paths["/products/search"]; !ok {
+		t.Fatal("spec missing /products/search path")
+	}
+}
+
 func TestListCategories(t *testing.T) {
 	h, _ := newTestHandler(t)
 	rec := doGET(t, h, "/api/"+APIVersion+"/categories")
@@ -11,7 +11,7 @@ func TestHealthz(t *testing.T) {
 	req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
 	rec := httptest.NewRecorder()

-	New(nil).Router().ServeHTTP(rec, req)
+	New(nil, nil).Router().ServeHTTP(rec, req)

 	if rec.Code != http.StatusOK {
 		t.Fatalf("expected status %d, got %d", http.StatusOK, rec.Code)
@@ -0,0 +1,142 @@
+package handler
+
+import (
+	"context"
+	"errors"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/baicai2026-baicai/goods/api/internal/apikey"
+	"github.com/baicai2026-baicai/goods/api/internal/store"
+)
+
+type ctxKey int
+
+const apiKeyIDKey ctxKey = 0
+
+// rateLimit authenticates an optional API key and enforces a per-minute budget
+// on the public API. Anonymous callers are limited by client IP at a lower
+// budget; a valid key raises the budget and attributes usage. An API key that
+// is present but invalid or revoked is rejected with 401. Rate-limit headers
+// are set on every response; over-budget callers get 429 + Retry-After.
+func (h *Handler) rateLimit(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		ip := clientIP(r)
+		id := "ip:" + ip
+		subject := "ip:" + ip // cumulative-quota counter subject
+		limit := h.anonLimit
+		quota := h.anonTotalQuota
+		keyID := ""
+
+		if raw := presentedKey(r); raw != "" {
+			if !apikey.IsWellFormed(raw) {
+				writeError(w, r, http.StatusUnauthorized, "invalid_api_key", "API key 格式无效")
+				return
+			}
+			k, err := h.store.APIKeyByHash(r.Context(), apikey.Hash(raw))
+			if errors.Is(err, store.ErrNotFound) {
+				writeError(w, r, http.StatusUnauthorized, "invalid_api_key", "API key 无效或已吊销")
+				return
+			}
+			if err != nil {
+				writeError(w, r, http.StatusInternalServerError, "internal_error", "internal server error")
+				return
+			}
+			keyID = k.ID
+			limit = k.RateLimitPerMin
+			id = "key:" + k.ID
+			subject = k.ID
+			quota = k.QuotaTotal
+		}
+
+		res := h.limiter.Allow(r.Context(), id, limit, time.Minute)
+		w.Header().Set("X-RateLimit-Limit", strconv.Itoa(res.Limit))
+		w.Header().Set("X-RateLimit-Remaining", strconv.Itoa(res.Remaining))
+		w.Header().Set("X-RateLimit-Reset", strconv.FormatInt(res.ResetUnix, 10))
+		if !res.Allowed {
+			retry := res.ResetUnix - time.Now().Unix()
+			if retry < 1 {
+				retry = 1
+			}
+			w.Header().Set("Retry-After", strconv.FormatInt(retry, 10))
+			writeError(w, r, http.StatusTooManyRequests, "rate_limited", "请求过于频繁，请稍后再试")
+			return
+		}
+
+		// Attribute one call to the caller's lifetime counter, then enforce the
+		// cumulative quota (quota <= 0 means unlimited). Keys also get daily and
+		// last-used stats recorded for the admin console.
+		var used int64
+		if keyID != "" {
+			h.limiter.RecordUsage(r.Context(), keyID)
+			used = h.limiter.TotalUsed(r.Context(), keyID)
+		} else {
+			used = h.limiter.IncrTotal(r.Context(), subject)
+		}
+		if quota > 0 {
+			remaining := quota - used
+			if remaining < 0 {
+				remaining = 0
+			}
+			w.Header().Set("X-Quota-Limit", strconv.FormatInt(quota, 10))
+			w.Header().Set("X-Quota-Used", strconv.FormatInt(used, 10))
+			w.Header().Set("X-Quota-Remaining", strconv.FormatInt(remaining, 10))
+			if used > quota {
+				if keyID == "" {
+					writeError(w, r, http.StatusForbidden, "quota_exhausted",
+						"免费额度（共 "+strconv.FormatInt(quota, 10)+" 次）已用尽，请注册账号获取更高配额的 API 密钥")
+				} else {
+					writeError(w, r, http.StatusForbidden, "quota_exhausted", "API 密钥配额已用尽")
+				}
+				return
+			}
+		}
+
+		if keyID != "" {
+			next.ServeHTTP(w, r.WithContext(context.WithValue(r.Context(), apiKeyIDKey, keyID)))
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+// registerLimit throttles self-service account endpoints per client IP without
+// consuming the metered free quota, so a caller can still register or recover
+// their key after exhausting the anonymous quota.
+func (h *Handler) registerLimit(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		res := h.limiter.Allow(r.Context(), "register:"+clientIP(r), h.regRatePerMin, time.Minute)
+		if !res.Allowed {
+			retry := res.ResetUnix - time.Now().Unix()
+			if retry < 1 {
+				retry = 1
+			}
+			w.Header().Set("Retry-After", strconv.FormatInt(retry, 10))
+			writeError(w, r, http.StatusTooManyRequests, "rate_limited", "操作过于频繁，请稍后再试")
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+// presentedKey extracts an API key from the X-API-Key header or a Bearer token.
+func presentedKey(r *http.Request) string {
+	if v := strings.TrimSpace(r.Header.Get("X-API-Key")); v != "" {
+		return v
+	}
+	if v := r.Header.Get("Authorization"); strings.HasPrefix(v, "Bearer ") {
+		return strings.TrimSpace(strings.TrimPrefix(v, "Bearer "))
+	}
+	return ""
+}
+
+// clientIP returns the caller IP, preferring chi's RealIP-normalized RemoteAddr.
+func clientIP(r *http.Request) string {
+	if host, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
+		return host
+	}
+	return r.RemoteAddr
+}
@@ -0,0 +1,120 @@
+package handler
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/baicai2026-baicai/goods/api/internal/apikey"
+	"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
+	"github.com/baicai2026-baicai/goods/api/internal/store"
+)
+
+// newRateLimitedHandler builds a handler backed by the test DB and a live Redis
+// limiter, plus a freshly issued API key with the given per-minute limit. It
+// skips when either backend is unavailable.
+func newRateLimitedHandler(t *testing.T, keyLimit int) (h *Handler, plaintextKey string) {
+	t.Helper()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Skipf("no database: %v", err)
+	}
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		t.Skipf("database not reachable: %v", err)
+	}
+	var hasTable bool
+	if err := pool.QueryRow(ctx, "SELECT to_regclass('public.api_key') IS NOT NULL").Scan(&hasTable); err != nil || !hasTable {
+		pool.Close()
+		t.Skip("migrations not applied (api_key missing)")
+	}
+
+	redisURL := os.Getenv("OPENGOODS_REDIS_URL")
+	if redisURL == "" {
+		redisURL = "redis://localhost:6379/0"
+	}
+	limiter := ratelimit.New(redisURL)
+	pingCtx, pingCancel := context.WithTimeout(context.Background(), time.Second)
+	defer pingCancel()
+	if err := limiter.Ping(pingCtx); err != nil {
+		pool.Close()
+		t.Skipf("redis not reachable: %v", err)
+	}
+
+	key, hash, prefix, err := apikey.Generate()
+	if err != nil {
+		pool.Close()
+		t.Fatal(err)
+	}
+	name := fmt.Sprintf("test-key-%d", time.Now().UnixNano())
+	if _, err := pool.Exec(context.Background(),
+		`INSERT INTO api_key (name, key_prefix, key_hash, rate_limit_per_min) VALUES ($1,$2,$3,$4)`,
+		name, prefix, hash, keyLimit); err != nil {
+		pool.Close()
+		t.Fatalf("insert api_key: %v", err)
+	}
+	t.Cleanup(func() {
+		_, _ = pool.Exec(context.Background(), "DELETE FROM api_key WHERE key_hash=$1", hash)
+		pool.Close()
+	})
+
+	return New(store.New(pool), nil).WithRateLimit(limiter, 60), key
+}
+
+func TestRateLimitHeadersAndKeyAuth(t *testing.T) {
+	h, key := newRateLimitedHandler(t, 100)
+	req := httptest.NewRequest(http.MethodGet, "/api/"+APIVersion+"/categories", nil)
+	req.Header.Set("X-API-Key", key)
+	rec := httptest.NewRecorder()
+	h.Router().ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, body = %s", rec.Code, rec.Body.String())
+	}
+	if got := rec.Header().Get("X-RateLimit-Limit"); got != "100" {
+		t.Fatalf("X-RateLimit-Limit = %q, want 100 (key limit)", got)
+	}
+	if rec.Header().Get("X-RateLimit-Remaining") == "" {
+		t.Fatal("missing X-RateLimit-Remaining header")
+	}
+}
+
+func TestInvalidKeyRejected(t *testing.T) {
+	h, _ := newRateLimitedHandler(t, 100)
+	req := httptest.NewRequest(http.MethodGet, "/api/"+APIVersion+"/categories", nil)
+	req.Header.Set("X-API-Key", "og_live_thiskeydoesnotexist123456")
+	rec := httptest.NewRecorder()
+	h.Router().ServeHTTP(rec, req)
+	if rec.Code != http.StatusUnauthorized {
+		t.Fatalf("status = %d, want 401; body = %s", rec.Code, rec.Body.String())
+	}
+}
+
+func TestRateLimitExceeded(t *testing.T) {
+	h, key := newRateLimitedHandler(t, 1)
+	do := func() int {
+		req := httptest.NewRequest(http.MethodGet, "/api/"+APIVersion+"/categories", nil)
+		req.Header.Set("X-API-Key", key)
+		rec := httptest.NewRecorder()
+		h.Router().ServeHTTP(rec, req)
+		return rec.Code
+	}
+	if code := do(); code != http.StatusOK {
+		t.Fatalf("first request status = %d, want 200", code)
+	}
+	if code := do(); code != http.StatusTooManyRequests {
+		t.Fatalf("second request status = %d, want 429", code)
+	}
+}
@@ -0,0 +1,216 @@
+{
+  "openapi": "3.0.3",
+  "info": {
+    "title": "OpenGoods / 天工商品档案公共仓 API",
+    "version": "1.0.0",
+    "description": "Public, read-only product-facts REST API. Anonymous access is allowed at a lower per-minute rate; an optional API key grants a higher rate limit and attributes usage. No purchase or commerce endpoints by design.",
+    "license": { "name": "Data under each source's license (e.g. ODbL)" }
+  },
+  "servers": [{ "url": "https://goods.tangshasha.com/api/v1" }],
+  "tags": [
+    { "name": "products" },
+    { "name": "catalog" },
+    { "name": "meta" },
+    { "name": "account" }
+  ],
+  "security": [{ "ApiKeyHeader": [] }, { "BearerKey": [] }, {}],
+  "paths": {
+    "/products/search": {
+      "get": {
+        "tags": ["products"],
+        "summary": "Search products",
+        "description": "Trigram-fuzzy name search (typo-tolerant) with optional category/brand/country filters, ranked by name similarity blended with data quality_score.",
+        "parameters": [
+          { "name": "q", "in": "query", "schema": { "type": "string" }, "description": "Keyword (name or barcode); fuzzy-matched. Empty returns all, ordered by quality_score." },
+          { "name": "category", "in": "query", "schema": { "type": "string" }, "description": "Category code (matches the subtree), e.g. food.beverages." },
+          { "name": "brand", "in": "query", "schema": { "type": "string" }, "description": "Brand name (fuzzy)." },
+          { "name": "country", "in": "query", "schema": { "type": "string" }, "description": "Country of origin (case-insensitive prefix)." },
+          { "name": "page", "in": "query", "schema": { "type": "integer", "default": 1, "minimum": 1 } },
+          { "name": "size", "in": "query", "schema": { "type": "integer", "default": 20, "maximum": 100 } }
+        ],
+        "responses": {
+          "200": {
+            "description": "Paged search results.",
+            "headers": {
+              "X-RateLimit-Limit": { "schema": { "type": "integer" }, "description": "Max requests in the current window." },
+              "X-RateLimit-Remaining": { "schema": { "type": "integer" }, "description": "Remaining requests in the window." },
+              "X-RateLimit-Reset": { "schema": { "type": "integer" }, "description": "Unix timestamp when the window resets." }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "items": { "type": "array", "items": { "$ref": "#/components/schemas/ProductSummary" } },
+                    "page": { "type": "integer" },
+                    "size": { "type": "integer" },
+                    "total": { "type": "integer" }
+                  }
+                }
+              }
+            }
+          },
+          "401": { "$ref": "#/components/responses/InvalidApiKey" },
+          "429": { "$ref": "#/components/responses/RateLimited" }
+        }
+      }
+    },
+    "/products/barcode/{gtin}": {
+      "get": {
+        "tags": ["products"],
+        "summary": "Get product by barcode (GTIN)",
+        "parameters": [{ "name": "gtin", "in": "path", "required": true, "schema": { "type": "string" } }],
+        "responses": {
+          "200": { "description": "Product", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Product" } } } },
+          "404": { "$ref": "#/components/responses/NotFound" },
+          "429": { "$ref": "#/components/responses/RateLimited" }
+        }
+      }
+    },
+    "/products/{id}": {
+      "get": {
+        "tags": ["products"],
+        "summary": "Get product detail by UUID",
+        "parameters": [{ "name": "id", "in": "path", "required": true, "schema": { "type": "string", "format": "uuid" } }],
+        "responses": {
+          "200": { "description": "Product", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Product" } } } },
+          "404": { "$ref": "#/components/responses/NotFound" }
+        }
+      }
+    },
+    "/products/{id}/nutriments": {
+      "get": {
+        "tags": ["products"],
+        "summary": "Get product nutriments",
+        "parameters": [{ "name": "id", "in": "path", "required": true, "schema": { "type": "string", "format": "uuid" } }],
+        "responses": { "200": { "description": "Nutriments" }, "404": { "$ref": "#/components/responses/NotFound" } }
+      }
+    },
+    "/products/{id}/msrp": {
+      "get": {
+        "tags": ["products"],
+        "summary": "Get manufacturer suggested retail price snapshots (reference only)",
+        "parameters": [{ "name": "id", "in": "path", "required": true, "schema": { "type": "string", "format": "uuid" } }],
+        "responses": { "200": { "description": "MSRP snapshots" } }
+      }
+    },
+    "/brands": {
+      "get": {
+        "tags": ["catalog"],
+        "summary": "List brands",
+        "parameters": [
+          { "name": "page", "in": "query", "schema": { "type": "integer", "default": 1 } },
+          { "name": "size", "in": "query", "schema": { "type": "integer", "default": 20, "maximum": 100 } }
+        ],
+        "responses": { "200": { "description": "Paged brands" } }
+      }
+    },
+    "/categories": {
+      "get": { "tags": ["catalog"], "summary": "List the category tree", "responses": { "200": { "description": "Category tree" } } }
+    },
+    "/sources/{id}": {
+      "get": {
+        "tags": ["meta"],
+        "summary": "Get a data source",
+        "parameters": [{ "name": "id", "in": "path", "required": true, "schema": { "type": "string", "format": "uuid" } }],
+        "responses": { "200": { "description": "Source" }, "404": { "$ref": "#/components/responses/NotFound" } }
+      }
+    },
+    "/register": {
+      "post": {
+        "tags": ["account"],
+        "summary": "Register an account and issue an API key",
+        "description": "Self-service registration; returns the plaintext API key exactly once.",
+        "security": [],
+        "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "required": ["email", "password"], "properties": { "email": { "type": "string", "format": "email" }, "password": { "type": "string", "minLength": 8 } } } } } },
+        "responses": { "201": { "description": "Account created; plaintext key returned once" }, "400": { "description": "Invalid email or weak password" }, "409": { "description": "Email already registered" } }
+      }
+    },
+    "/account": {
+      "post": {
+        "tags": ["account"],
+        "summary": "View account key metadata and cumulative quota usage",
+        "security": [],
+        "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "required": ["email", "password"], "properties": { "email": { "type": "string", "format": "email" }, "password": { "type": "string" } } } } } },
+        "responses": { "200": { "description": "Account info with quota usage" }, "401": { "description": "Invalid credentials" } }
+      }
+    },
+    "/account/regenerate": {
+      "post": {
+        "tags": ["account"],
+        "summary": "Revoke the current key and issue a new one",
+        "description": "Cumulative usage carries over; returns the plaintext key exactly once.",
+        "security": [],
+        "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "required": ["email", "password"], "properties": { "email": { "type": "string", "format": "email" }, "password": { "type": "string" } } } } } },
+        "responses": { "200": { "description": "New plaintext key returned once" }, "401": { "description": "Invalid credentials" } }
+      }
+    }
+  },
+  "components": {
+    "securitySchemes": {
+      "ApiKeyHeader": { "type": "apiKey", "in": "header", "name": "X-API-Key", "description": "API key, e.g. og_live_xxx. Optional." },
+      "BearerKey": { "type": "http", "scheme": "bearer", "description": "Authorization: Bearer og_live_xxx. Optional." }
+    },
+    "responses": {
+      "NotFound": {
+        "description": "Resource not found.",
+        "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } }
+      },
+      "RateLimited": {
+        "description": "Rate limit exceeded.",
+        "headers": { "Retry-After": { "schema": { "type": "integer" }, "description": "Seconds to wait before retrying." } },
+        "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } }
+      },
+      "InvalidApiKey": {
+        "description": "API key invalid or revoked.",
+        "content": { "application/json": { "schema": { "$ref": "#/components/schemas/Error" } } }
+      }
+    },
+    "schemas": {
+      "Error": {
+        "type": "object",
+        "properties": {
+          "error": {
+            "type": "object",
+            "properties": {
+              "code": { "type": "string" },
+              "message": { "type": "string" },
+              "request_id": { "type": "string" }
+            }
+          }
+        }
+      },
+      "ProductSummary": {
+        "type": "object",
+        "properties": {
+          "id": { "type": "string", "format": "uuid" },
+          "gtin": { "type": "string", "nullable": true },
+          "name": { "type": "string" },
+          "brand": { "type": "string", "nullable": true },
+          "category_path": { "type": "string", "nullable": true },
+          "country_of_origin": { "type": "string", "nullable": true },
+          "quality_score": { "type": "number", "format": "float" },
+          "score": { "type": "number", "format": "float", "nullable": true, "description": "Relevance (name word-similarity) when q is provided; null otherwise." }
+        }
+      },
+      "Product": {
+        "type": "object",
+        "properties": {
+          "id": { "type": "string", "format": "uuid" },
+          "gtin": { "type": "string", "nullable": true },
+          "name": { "type": "string" },
+          "brand": { "type": "string", "nullable": true },
+          "category_path": { "type": "string", "nullable": true },
+          "net_content_value": { "type": "number", "nullable": true },
+          "net_content_unit": { "type": "string", "nullable": true },
+          "country_of_origin": { "type": "string", "nullable": true },
+          "quality_score": { "type": "number", "format": "float" },
+          "nutriments": { "type": "object", "additionalProperties": true, "nullable": true },
+          "nutrition_basis": { "type": "string", "nullable": true },
+          "nutri_score": { "type": "string", "nullable": true },
+          "ingredients_text": { "type": "string", "nullable": true }
+        }
+      }
+    }
+  }
+}
@@ -0,0 +1,10 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <title>OpenGoods</title>
+  </head>
+  <body>
+    <div id="root">OpenGoods public site placeholder. Built assets are injected during Docker build.</div>
+  </body>
+</html>
@@ -0,0 +1,22 @@
+// Package publicweb embeds the built public SPA (Vite dist). During Docker
+// builds the real dist/ is produced by the node stage and copied in before go
+// build; the committed placeholder keeps the package compilable for
+// `go build ./...`.
+package publicweb
+
+import (
+	"embed"
+	"io/fs"
+)
+
+//go:embed all:dist
+var distFS embed.FS
+
+// Dist returns the embedded SPA filesystem rooted at dist/.
+func Dist() fs.FS {
+	sub, err := fs.Sub(distFS, "dist")
+	if err != nil {
+		panic(err)
+	}
+	return sub
+}
@@ -0,0 +1,171 @@
+// Package ratelimit provides a Redis-backed fixed-window rate limiter and
+// lightweight per-key usage counters for the public API.
+//
+// All state lives in Redis so it is shared across API replicas and visible to
+// the admin console, and so the public server keeps its read-only contract
+// against PostgreSQL. Every operation fails open: if Redis is unavailable the
+// limiter allows the request rather than taking the API down.
+package ratelimit
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// Limiter throttles callers and records usage. A nil-backed Limiter (when Redis
+// could not be configured) disables limiting and usage tracking.
+type Limiter struct {
+	rdb *redis.Client
+}
+
+// Result describes the outcome of an Allow check and the headers to surface.
+type Result struct {
+	Allowed   bool
+	Limit     int
+	Remaining int
+	ResetUnix int64
+}
+
+// UsageStat is the aggregated usage for a single API key.
+type UsageStat struct {
+	Total      int64  `json:"total"`
+	Today      int64  `json:"today"`
+	LastUsedAt *int64 `json:"last_used_at,omitempty"`
+}
+
+// New builds a Limiter from a redis:// URL. On a parse error it logs and returns
+// a fail-open limiter (Redis disabled) so the server still boots.
+func New(redisURL string) *Limiter {
+	opt, err := redis.ParseURL(redisURL)
+	if err != nil {
+		log.Printf("ratelimit: invalid redis url %q: %v (rate limiting disabled)", redisURL, err)
+		return &Limiter{}
+	}
+	return &Limiter{rdb: redis.NewClient(opt)}
+}
+
+// Enabled reports whether a Redis backend is configured.
+func (l *Limiter) Enabled() bool { return l != nil && l.rdb != nil }
+
+// Ping verifies the Redis backend is reachable. Returns an error if disabled or
+// unreachable.
+func (l *Limiter) Ping(ctx context.Context) error {
+	if !l.Enabled() {
+		return redis.ErrClosed
+	}
+	return l.rdb.Ping(ctx).Err()
+}
+
+// Allow records a hit for id within a fixed window and reports whether the
+// caller is under limit. Fails open (Allowed=true) on any Redis error.
+func (l *Limiter) Allow(ctx context.Context, id string, limit int, window time.Duration) Result {
+	reset := func() int64 {
+		win := int64(window / time.Second)
+		if win < 1 {
+			win = 1
+		}
+		return (time.Now().Unix()/win + 1) * win
+	}
+	if !l.Enabled() {
+		return Result{Allowed: true, Limit: limit, Remaining: limit, ResetUnix: reset()}
+	}
+	win := int64(window / time.Second)
+	if win < 1 {
+		win = 1
+	}
+	bucket := time.Now().Unix() / win
+	key := fmt.Sprintf("rl:%s:%d", id, bucket)
+
+	n, err := l.rdb.Incr(ctx, key).Result()
+	if err != nil {
+		return Result{Allowed: true, Limit: limit, Remaining: limit, ResetUnix: (bucket + 1) * win}
+	}
+	if n == 1 {
+		l.rdb.Expire(ctx, key, time.Duration(win)*time.Second)
+	}
+	remaining := limit - int(n)
+	if remaining < 0 {
+		remaining = 0
+	}
+	return Result{
+		Allowed:   int(n) <= limit,
+		Limit:     limit,
+		Remaining: remaining,
+		ResetUnix: (bucket + 1) * win,
+	}
+}
+
+// RecordUsage increments total/daily counters and stamps last-used for a key.
+// Best-effort: errors are ignored.
+func (l *Limiter) RecordUsage(ctx context.Context, keyID string) {
+	if !l.Enabled() || keyID == "" {
+		return
+	}
+	now := time.Now()
+	day := now.Format("20060102")
+	pipe := l.rdb.Pipeline()
+	pipe.Incr(ctx, "usage:total:"+keyID)
+	dayKey := "usage:day:" + keyID + ":" + day
+	pipe.Incr(ctx, dayKey)
+	pipe.Expire(ctx, dayKey, 90*24*time.Hour)
+	pipe.Set(ctx, "usage:last:"+keyID, now.Unix(), 0)
+	_, _ = pipe.Exec(ctx)
+}
+
+// IncrTotal increments the lifetime call counter for subject and returns the
+// new total. The counter never expires; it is the cumulative number of calls
+// attributed to a caller (an API key id, or "ip:<addr>" for anonymous callers).
+// Fails open returning 0 on any error so quota enforcement never takes the API
+// down.
+func (l *Limiter) IncrTotal(ctx context.Context, subject string) int64 {
+	if !l.Enabled() || subject == "" {
+		return 0
+	}
+	n, err := l.rdb.Incr(ctx, "usage:total:"+subject).Result()
+	if err != nil {
+		return 0
+	}
+	return n
+}
+
+// CopyTotal carries a lifetime counter from one subject to another, used when a
+// key is regenerated so a caller cannot reset their cumulative quota. Best
+// effort: a missing or zero source counter is a no-op.
+func (l *Limiter) CopyTotal(ctx context.Context, from, to string) {
+	if !l.Enabled() || from == "" || to == "" {
+		return
+	}
+	n, err := l.rdb.Get(ctx, "usage:total:"+from).Int64()
+	if err != nil || n == 0 {
+		return
+	}
+	l.rdb.Set(ctx, "usage:total:"+to, n, 0)
+}
+
+// TotalUsed reads the lifetime call counter for subject without incrementing.
+func (l *Limiter) TotalUsed(ctx context.Context, subject string) int64 {
+	if !l.Enabled() || subject == "" {
+		return 0
+	}
+	n, _ := l.rdb.Get(ctx, "usage:total:"+subject).Int64()
+	return n
+}
+
+// Usage reads aggregated usage for a key. Returns a zero-value stat on error.
+func (l *Limiter) Usage(ctx context.Context, keyID string) UsageStat {
+	var st UsageStat
+	if !l.Enabled() || keyID == "" {
+		return st
+	}
+	day := time.Now().Format("20060102")
+	st.Total, _ = l.rdb.Get(ctx, "usage:total:"+keyID).Int64()
+	st.Today, _ = l.rdb.Get(ctx, "usage:day:"+keyID+":"+day).Int64()
+	if v, err := l.rdb.Get(ctx, "usage:last:"+keyID).Int64(); err == nil {
+		st.LastUsedAt = &v
+	}
+	return st
+}
@@ -0,0 +1,94 @@
+package ratelimit
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+)
+
+// TestDisabledFailsOpen verifies that a Limiter without a Redis backend allows
+// all requests and reports usage as zero rather than erroring.
+func TestDisabledFailsOpen(t *testing.T) {
+	l := New("not-a-valid-url") // parse error => disabled
+	if l.Enabled() {
+		t.Fatal("expected limiter to be disabled for invalid url")
+	}
+	res := l.Allow(context.Background(), "x", 1, time.Minute)
+	if !res.Allowed || res.Remaining != 1 {
+		t.Fatalf("disabled limiter must fail open: %+v", res)
+	}
+	// Must not panic and must return zero usage.
+	l.RecordUsage(context.Background(), "k1")
+	if u := l.Usage(context.Background(), "k1"); u.Total != 0 {
+		t.Fatalf("disabled usage should be zero, got %+v", u)
+	}
+}
+
+// TestNilReceiverSafe ensures a nil *Limiter is safe to use (handler default).
+func TestNilReceiverSafe(t *testing.T) {
+	var l *Limiter
+	if l.Enabled() {
+		t.Fatal("nil limiter must report disabled")
+	}
+	res := l.Allow(context.Background(), "x", 5, time.Minute)
+	if !res.Allowed {
+		t.Fatal("nil limiter must fail open")
+	}
+	l.RecordUsage(context.Background(), "k")
+	_ = l.Usage(context.Background(), "k")
+}
+
+func testLimiter(t *testing.T) *Limiter {
+	t.Helper()
+	url := os.Getenv("OPENGOODS_REDIS_URL")
+	if url == "" {
+		url = "redis://localhost:6379/0"
+	}
+	l := New(url)
+	if !l.Enabled() {
+		t.Skip("redis not configured")
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+	if err := l.rdb.Ping(ctx).Err(); err != nil {
+		t.Skipf("redis not reachable: %v", err)
+	}
+	return l
+}
+
+func TestAllowFixedWindow(t *testing.T) {
+	l := testLimiter(t)
+	ctx := context.Background()
+	id := fmt.Sprintf("test:%d", time.Now().UnixNano())
+
+	for i := 1; i <= 2; i++ {
+		if res := l.Allow(ctx, id, 2, time.Minute); !res.Allowed {
+			t.Fatalf("request %d should be allowed: %+v", i, res)
+		}
+	}
+	res := l.Allow(ctx, id, 2, time.Minute)
+	if res.Allowed {
+		t.Fatalf("3rd request over limit 2 should be denied: %+v", res)
+	}
+	if res.Remaining != 0 {
+		t.Fatalf("remaining should be 0 when over limit, got %d", res.Remaining)
+	}
+}
+
+func TestRecordAndReadUsage(t *testing.T) {
+	l := testLimiter(t)
+	ctx := context.Background()
+	key := fmt.Sprintf("usagekey:%d", time.Now().UnixNano())
+
+	l.RecordUsage(ctx, key)
+	l.RecordUsage(ctx, key)
+	u := l.Usage(ctx, key)
+	if u.Total != 2 || u.Today != 2 {
+		t.Fatalf("expected total=2 today=2, got %+v", u)
+	}
+	if u.LastUsedAt == nil {
+		t.Fatal("expected last-used timestamp to be set")
+	}
+}
@@ -0,0 +1,169 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"strings"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/baicai2026-baicai/goods/api/internal/apikey"
+)
+
+// ErrEmailTaken is returned when registering an email that already exists.
+var ErrEmailTaken = errors.New("email already registered")
+
+// Account is a self-registered public-API user and its current key metadata.
+type Account struct {
+	ID              string `json:"id"`
+	Email           string `json:"email"`
+	KeyID           string `json:"-"`
+	KeyPrefix       string `json:"key_prefix"`
+	RateLimitPerMin int    `json:"rate_limit_per_min"`
+	QuotaTotal      int64  `json:"quota_total"`
+}
+
+// bcryptDummyHash is compared against on unknown-email logins to keep timing
+// roughly constant and avoid leaking which emails are registered.
+const bcryptDummyHash = "$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy"
+
+func isUniqueViolation(err error) bool {
+	var pgErr *pgconn.PgError
+	return errors.As(err, &pgErr) && pgErr.Code == "23505"
+}
+
+// RegisterUser creates an account plus a self-issued API key with the given
+// per-minute rate and cumulative quota, returning the plaintext key (shown
+// once). Email uniqueness is case-insensitive; ErrEmailTaken signals a dupe.
+func (s *Store) RegisterUser(ctx context.Context, email, password string, ratePerMin int, quotaTotal int64) (plaintext string, acct Account, err error) {
+	email = strings.TrimSpace(email)
+	pwHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return "", Account{}, err
+	}
+	key, keyHash, prefix, err := apikey.Generate()
+	if err != nil {
+		return "", Account{}, err
+	}
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return "", Account{}, err
+	}
+	defer func() { _ = tx.Rollback(ctx) }()
+
+	var keyID string
+	if err = tx.QueryRow(ctx,
+		`INSERT INTO api_key (name, key_prefix, key_hash, owner_email, tier, rate_limit_per_min, quota_total, created_by)
+		 VALUES ($1,$2,$3,$4,'registered',$5,$6,'self-register') RETURNING id`,
+		"user:"+strings.ToLower(email), prefix, keyHash, email, ratePerMin, quotaTotal,
+	).Scan(&keyID); err != nil {
+		return "", Account{}, err
+	}
+
+	var userID string
+	if err = tx.QueryRow(ctx,
+		`INSERT INTO app_user (email, password_hash, api_key_id) VALUES ($1,$2,$3) RETURNING id`,
+		email, string(pwHash), keyID,
+	).Scan(&userID); err != nil {
+		if isUniqueViolation(err) {
+			return "", Account{}, ErrEmailTaken
+		}
+		return "", Account{}, err
+	}
+
+	if err = tx.Commit(ctx); err != nil {
+		return "", Account{}, err
+	}
+	return key, Account{
+		ID: userID, Email: email, KeyID: keyID, KeyPrefix: prefix,
+		RateLimitPerMin: ratePerMin, QuotaTotal: quotaTotal,
+	}, nil
+}
+
+// Authenticate verifies an email/password pair and returns the account with its
+// current (non-revoked) key metadata. Returns ErrNotFound on unknown email or
+// wrong password.
+func (s *Store) Authenticate(ctx context.Context, email, password string) (Account, error) {
+	email = strings.TrimSpace(email)
+	var (
+		userID, pwHash string
+		keyID          *string
+	)
+	err := s.pool.QueryRow(ctx,
+		`SELECT id, password_hash, api_key_id FROM app_user WHERE lower(email) = lower($1)`, email,
+	).Scan(&userID, &pwHash, &keyID)
+	if errors.Is(err, pgx.ErrNoRows) {
+		_ = bcrypt.CompareHashAndPassword([]byte(bcryptDummyHash), []byte(password))
+		return Account{}, ErrNotFound
+	}
+	if err != nil {
+		return Account{}, err
+	}
+	if err := bcrypt.CompareHashAndPassword([]byte(pwHash), []byte(password)); err != nil {
+		return Account{}, ErrNotFound
+	}
+
+	acct := Account{ID: userID, Email: email}
+	if keyID != nil {
+		acct.KeyID = *keyID
+		_ = s.pool.QueryRow(ctx,
+			`SELECT key_prefix, rate_limit_per_min, quota_total
+			 FROM api_key WHERE id = $1 AND revoked_at IS NULL`, *keyID,
+		).Scan(&acct.KeyPrefix, &acct.RateLimitPerMin, &acct.QuotaTotal)
+	}
+	return acct, nil
+}
+
+// RegenerateKey verifies credentials, revokes the account's current key, and
+// issues a fresh one with the same rate/quota, returning the plaintext key and
+// the previous key id (so cumulative usage can be carried over). Returns
+// ErrNotFound on bad credentials.
+func (s *Store) RegenerateKey(ctx context.Context, email, password string, ratePerMin int, quotaTotal int64) (plaintext string, acct Account, oldKeyID string, err error) {
+	cur, err := s.Authenticate(ctx, email, password)
+	if err != nil {
+		return "", Account{}, "", err
+	}
+	key, keyHash, prefix, err := apikey.Generate()
+	if err != nil {
+		return "", Account{}, "", err
+	}
+
+	oldKeyID = cur.KeyID
+
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return "", Account{}, "", err
+	}
+	defer func() { _ = tx.Rollback(ctx) }()
+
+	if oldKeyID != "" {
+		if _, err = tx.Exec(ctx,
+			`UPDATE api_key SET revoked_at = now() WHERE id = $1`, oldKeyID); err != nil {
+			return "", Account{}, "", err
+		}
+	}
+	var newKeyID string
+	if err = tx.QueryRow(ctx,
+		`INSERT INTO api_key (name, key_prefix, key_hash, owner_email, tier, rate_limit_per_min, quota_total, created_by)
+		 VALUES ($1,$2,$3,$4,'registered',$5,$6,'self-register') RETURNING id`,
+		"user:"+strings.ToLower(cur.Email), prefix, keyHash, cur.Email, ratePerMin, quotaTotal,
+	).Scan(&newKeyID); err != nil {
+		return "", Account{}, "", err
+	}
+	if _, err = tx.Exec(ctx,
+		`UPDATE app_user SET api_key_id = $1 WHERE id = $2`, newKeyID, cur.ID); err != nil {
+		return "", Account{}, "", err
+	}
+	if err = tx.Commit(ctx); err != nil {
+		return "", Account{}, "", err
+	}
+
+	cur.KeyID = newKeyID
+	cur.KeyPrefix = prefix
+	cur.RateLimitPerMin = ratePerMin
+	cur.QuotaTotal = quotaTotal
+	return key, cur, oldKeyID, nil
+}
@@ -0,0 +1,99 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/baicai2026-baicai/goods/api/internal/apikey"
+)
+
+func testStore(t *testing.T) *Store {
+	t.Helper()
+	dsn := os.Getenv("OPENGOODS_DATABASE_URL")
+	if dsn == "" {
+		dsn = "postgres://opengoods:opengoods@localhost:5432/opengoods?sslmode=disable"
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Skipf("no database: %v", err)
+	}
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		t.Skipf("database not reachable: %v", err)
+	}
+	var hasUser bool
+	if err := pool.QueryRow(ctx, "SELECT to_regclass('public.app_user') IS NOT NULL").Scan(&hasUser); err != nil || !hasUser {
+		pool.Close()
+		t.Skip("migrations not applied")
+	}
+	t.Cleanup(pool.Close)
+	return New(pool)
+}
+
+func TestRegisterAuthenticateRegenerate(t *testing.T) {
+	s := testStore(t)
+	ctx := context.Background()
+	email := fmt.Sprintf("user-%d@example.com", time.Now().UnixNano())
+
+	t.Cleanup(func() {
+		_, _ = s.pool.Exec(ctx, "DELETE FROM app_user WHERE lower(email)=lower($1)", email)
+		_, _ = s.pool.Exec(ctx, "DELETE FROM api_key WHERE owner_email=$1", email)
+	})
+
+	key, acct, err := s.RegisterUser(ctx, email, "supersecret", 300, 100000)
+	if err != nil {
+		t.Fatalf("register: %v", err)
+	}
+	if key == "" || acct.KeyPrefix == "" || acct.QuotaTotal != 100000 || acct.RateLimitPerMin != 300 {
+		t.Fatalf("unexpected account: %+v key=%q", acct, key)
+	}
+
+	// The issued key resolves via the public auth path with its quota attached.
+	k, err := s.APIKeyByHash(ctx, apikey.Hash(key))
+	if err != nil {
+		t.Fatalf("APIKeyByHash: %v", err)
+	}
+	if k.QuotaTotal != 100000 || k.RateLimitPerMin != 300 {
+		t.Fatalf("key metadata mismatch: %+v", k)
+	}
+
+	// Duplicate email is rejected.
+	if _, _, err := s.RegisterUser(ctx, email, "anotherpass", 300, 100000); !errors.Is(err, ErrEmailTaken) {
+		t.Fatalf("expected ErrEmailTaken, got %v", err)
+	}
+
+	// Wrong password fails; correct password authenticates.
+	if _, err := s.Authenticate(ctx, email, "wrong"); !errors.Is(err, ErrNotFound) {
+		t.Fatalf("expected ErrNotFound for bad password, got %v", err)
+	}
+	got, err := s.Authenticate(ctx, email, "supersecret")
+	if err != nil {
+		t.Fatalf("authenticate: %v", err)
+	}
+	if got.KeyPrefix != acct.KeyPrefix {
+		t.Fatalf("authenticate key prefix = %q want %q", got.KeyPrefix, acct.KeyPrefix)
+	}
+
+	// Regeneration revokes the old key and issues a new one.
+	newKey, regen, oldKeyID, err := s.RegenerateKey(ctx, email, "supersecret", 300, 100000)
+	if err != nil {
+		t.Fatalf("regenerate: %v", err)
+	}
+	if newKey == key || oldKeyID != acct.KeyID || regen.KeyID == oldKeyID {
+		t.Fatalf("regenerate did not rotate key: old=%s new=%+v", oldKeyID, regen)
+	}
+	if _, err := s.APIKeyByHash(ctx, apikey.Hash(key)); !errors.Is(err, ErrNotFound) {
+		t.Fatalf("old key should be revoked, got %v", err)
+	}
+	if _, err := s.APIKeyByHash(ctx, apikey.Hash(newKey)); err != nil {
+		t.Fatalf("new key should be active: %v", err)
+	}
+}
@@ -4,8 +4,10 @@ package store

 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"strconv"
+	"strings"

 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
@@ -29,6 +31,42 @@ func (s *Store) Ping(ctx context.Context) error {
 	return s.pool.Ping(ctx)
 }

+// PublicStats summarizes the public catalog for the homepage.
+type PublicStats struct {
+	Total     int     `json:"total"`
+	Qualified int     `json:"qualified"`
+	MinScore  float64 `json:"min_score"`
+}
+
+// Stats returns active-product totals and the number of qualified records whose
+// quality_score meets minScore.
+func (s *Store) Stats(ctx context.Context, minScore float64) (PublicStats, error) {
+	st := PublicStats{MinScore: minScore}
+	err := s.pool.QueryRow(ctx, `
+SELECT count(*) FILTER (WHERE status = 'active'),
+       count(*) FILTER (WHERE status = 'active' AND quality_score >= $1)
+FROM product`, minScore).Scan(&st.Total, &st.Qualified)
+	return st, err
+}
+
+// Barcode is one GS1 trade item number attached to a product.
+type Barcode struct {
+	GTIN      string  `json:"gtin"`
+	GTINType  string  `json:"gtin_type"`
+	PackLevel string  `json:"pack_level"`
+	Region    *string `json:"region"`
+	IsPrimary bool    `json:"is_primary"`
+}
+
+// ProductSpec is one labeled spec line for a non-food product, rendered from
+// the product's attributes JSONB against its archive kind's field template.
+type ProductSpec struct {
+	Key   string `json:"key"`
+	Label string `json:"label"`
+	Value string `json:"value"`
+	Unit  string `json:"unit,omitempty"`
+}
+
 // Product is the full public view of a product.
 type Product struct {
 	ID              string         `json:"id"`
@@ -37,10 +75,13 @@ type Product struct {
 	Brand           *string        `json:"brand"`
 	CategoryPath    *string        `json:"category_path"`
 	GPCBrickCode    *string        `json:"gpc_brick_code"`
+	ArchiveKind     string         `json:"archive_kind"`
 	NetContentValue *float64       `json:"net_content_value"`
 	NetContentUnit  *string        `json:"net_content_unit"`
 	CountryOfOrigin *string        `json:"country_of_origin"`
 	QualityScore    float64        `json:"quality_score"`
+	Barcodes        []Barcode      `json:"barcodes"`
+	Specs           []ProductSpec  `json:"specs,omitempty"`
 	Nutriments      map[string]any `json:"nutriments,omitempty"`
 	NutritionBasis  *string        `json:"nutrition_basis,omitempty"`
 	NutriScore      *string        `json:"nutri_score,omitempty"`
@@ -49,17 +90,50 @@ type Product struct {
 	Additives       []string       `json:"additives,omitempty"`
 }

+// ProductBarcodes returns every barcode attached to a product, primary first.
+func (s *Store) ProductBarcodes(ctx context.Context, productID string) ([]Barcode, error) {
+	rows, err := s.pool.Query(ctx,
+		`SELECT gtin, gtin_type, pack_level, region, is_primary
+		 FROM product_barcode WHERE product_id = $1
+		 ORDER BY is_primary DESC, gtin`, productID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	out := []Barcode{}
+	for rows.Next() {
+		var b Barcode
+		if err := rows.Scan(&b.GTIN, &b.GTINType, &b.PackLevel, &b.Region, &b.IsPrimary); err != nil {
+			return nil, err
+		}
+		out = append(out, b)
+	}
+	return out, rows.Err()
+}
+
 // ProductSummary is a lightweight row used in search/listing responses.
 type ProductSummary struct {
-	ID           string  `json:"id"`
-	GTIN         *string `json:"gtin"`
-	Name         string  `json:"name"`
-	Brand        *string `json:"brand"`
-	CategoryPath *string `json:"category_path"`
+	ID           string   `json:"id"`
+	GTIN         *string  `json:"gtin"`
+	Name         string   `json:"name"`
+	Brand        *string  `json:"brand"`
+	CategoryPath *string  `json:"category_path"`
+	Country      *string  `json:"country_of_origin"`
+	QualityScore float64  `json:"quality_score"`
+	Score        *float64 `json:"score,omitempty"`
+}
+
+// SearchFilters bundles the optional filters accepted by SearchProducts.
+type SearchFilters struct {
+	Query    string // fuzzy name / barcode query
+	Category string // ltree path; matches the subtree
+	Brand    string // fuzzy brand name
+	Country  string // country_of_origin prefix (case-insensitive)
 }

 const productSelect = `
 SELECT p.id, p.gtin, p.name, b.name, c.path::text, p.gpc_brick_code,
+       COALESCE(c.archive_kind, 'generic'), p.attributes,
       p.net_content_value, p.net_content_unit, p.country_of_origin, p.quality_score,
       f.nutriments, f.nutrition_basis, f.nutri_score, f.ingredients_text,
       f.allergens, f.additives
@@ -69,61 +143,181 @@ LEFT JOIN category c ON c.id = p.category_id
 LEFT JOIN food_detail f ON f.product_id = p.id
 `

-func scanProduct(row pgx.Row) (*Product, error) {
+func scanProduct(row pgx.Row) (*Product, []byte, error) {
 	var p Product
+	var attributes []byte
 	err := row.Scan(
 		&p.ID, &p.GTIN, &p.Name, &p.Brand, &p.CategoryPath, &p.GPCBrickCode,
+		&p.ArchiveKind, &attributes,
 		&p.NetContentValue, &p.NetContentUnit, &p.CountryOfOrigin, &p.QualityScore,
 		&p.Nutriments, &p.NutritionBasis, &p.NutriScore, &p.Ingredients,
 		&p.Allergens, &p.Additives,
 	)
 	if errors.Is(err, pgx.ErrNoRows) {
-		return nil, ErrNotFound
+		return nil, nil, ErrNotFound
 	}
+	if err != nil {
+		return nil, nil, err
+	}
+	return &p, attributes, nil
+}
+
+// buildSpecs renders the labeled, ordered spec list for a non-food product from
+// its attributes JSONB against its archive kind's field template.
+func (s *Store) buildSpecs(ctx context.Context, kind string, attributes []byte) ([]ProductSpec, error) {
+	if kind == "" || kind == "food" || len(attributes) == 0 {
+		return nil, nil
+	}
+	attrs := map[string]any{}
+	if err := json.Unmarshal(attributes, &attrs); err != nil || len(attrs) == 0 {
+		return nil, nil
+	}
+	rows, err := s.pool.Query(ctx,
+		"SELECT field_key, label_zh, COALESCE(unit, '') FROM kind_field WHERE kind = $1 ORDER BY sort_order, field_key", kind)
 	if err != nil {
 		return nil, err
 	}
-	return &p, nil
+	defer rows.Close()
+	specs := []ProductSpec{}
+	for rows.Next() {
+		var key, label, unit string
+		if err := rows.Scan(&key, &label, &unit); err != nil {
+			return nil, err
+		}
+		v, ok := attrs[key]
+		if !ok || v == nil {
+			continue
+		}
+		val := stringifyAttr(v)
+		if val == "" {
+			continue
+		}
+		specs = append(specs, ProductSpec{Key: key, Label: label, Value: val, Unit: unit})
+	}
+	return specs, rows.Err()
 }

-// ProductByGTIN looks up an active product by its barcode.
+// stringifyAttr renders a JSON attribute value as display text.
+func stringifyAttr(v any) string {
+	switch t := v.(type) {
+	case string:
+		return t
+	case float64:
+		return strconv.FormatFloat(t, 'f', -1, 64)
+	case bool:
+		if t {
+			return "是"
+		}
+		return "否"
+	case []any:
+		parts := make([]string, 0, len(t))
+		for _, e := range t {
+			parts = append(parts, stringifyAttr(e))
+		}
+		return strings.Join(parts, "、")
+	default:
+		return ""
+	}
+}
+
+// ProductByGTIN looks up an active product by any of its barcodes.
 func (s *Store) ProductByGTIN(ctx context.Context, gtin string) (*Product, error) {
-	row := s.pool.QueryRow(ctx, productSelect+" WHERE p.gtin = $1 AND p.status = 'active'", gtin)
-	return scanProduct(row)
+	row := s.pool.QueryRow(ctx, productSelect+`
+ WHERE p.status = 'active'
+   AND (p.gtin = $1 OR EXISTS (
+         SELECT 1 FROM product_barcode pb
+         WHERE pb.product_id = p.id AND pb.gtin = $1))
+ LIMIT 1`, gtin)
+	p, attrs, err := scanProduct(row)
+	if err != nil {
+		return nil, err
+	}
+	if p.Barcodes, err = s.ProductBarcodes(ctx, p.ID); err != nil {
+		return nil, err
+	}
+	if p.Specs, err = s.buildSpecs(ctx, p.ArchiveKind, attrs); err != nil {
+		return nil, err
+	}
+	return p, nil
 }

 // ProductByID looks up a product by its UUID.
 func (s *Store) ProductByID(ctx context.Context, id string) (*Product, error) {
 	row := s.pool.QueryRow(ctx, productSelect+" WHERE p.id = $1", id)
-	return scanProduct(row)
+	p, attrs, err := scanProduct(row)
+	if err != nil {
+		return nil, err
+	}
+	if p.Barcodes, err = s.ProductBarcodes(ctx, p.ID); err != nil {
+		return nil, err
+	}
+	if p.Specs, err = s.buildSpecs(ctx, p.ArchiveKind, attrs); err != nil {
+		return nil, err
+	}
+	return p, nil
 }

-// SearchProducts performs a fuzzy name search with optional category subtree filter.
-func (s *Store) SearchProducts(ctx context.Context, q, category string, limit, offset int) ([]ProductSummary, int, error) {
+// fuzzyThreshold is the minimum word_similarity for a name to be considered a
+// fuzzy match. ~0.42 tolerates common typos (e.g. "choclate"→"Chocolate")
+// without returning unrelated products.
+const fuzzyThreshold = "0.42"
+
+// SearchProducts runs a trigram-fuzzy name search with optional category /
+// brand / country filters. When a query is present, matching is inclusive
+// (substring OR trigram-similar OR barcode), and results are ranked by name
+// similarity blended with quality_score so the best, most-complete records
+// surface first. Without a query, results are ordered by quality_score.
+func (s *Store) SearchProducts(ctx context.Context, f SearchFilters, limit, offset int) ([]ProductSummary, int, error) {
 	args := []any{}
 	where := "WHERE p.status = 'active'"
-	if q != "" {
-		args = append(args, q)
-		where += " AND p.name ILIKE '%' || $1 || '%'"
+
+	qIdx := 0
+	if f.Query != "" {
+		args = append(args, f.Query)
+		qIdx = len(args)
+		q := "$" + strconv.Itoa(qIdx)
+		where += ` AND (p.name ILIKE '%' || ` + q + ` || '%'
+			OR word_similarity(` + q + `, p.name) >= ` + fuzzyThreshold + `
+			OR EXISTS (SELECT 1 FROM product_barcode pb
+			           WHERE pb.product_id = p.id AND pb.gtin ILIKE '%' || ` + q + ` || '%'))`
 	}
-	if category != "" {
-		args = append(args, category)
+	if f.Category != "" {
+		args = append(args, f.Category)
 		where += " AND c.path <@ $" + strconv.Itoa(len(args)) + "::ltree"
 	}
+	if f.Brand != "" {
+		args = append(args, f.Brand)
+		where += " AND b.name ILIKE '%' || $" + strconv.Itoa(len(args)) + " || '%'"
+	}
+	if f.Country != "" {
+		args = append(args, f.Country)
+		where += " AND p.country_of_origin ILIKE $" + strconv.Itoa(len(args)) + " || '%'"
+	}
+
+	from := `FROM product p
+LEFT JOIN brand b ON b.id = p.brand_id
+LEFT JOIN category c ON c.id = p.category_id `

-	countSQL := "SELECT count(*) FROM product p LEFT JOIN category c ON c.id = p.category_id " + where
 	var total int
-	if err := s.pool.QueryRow(ctx, countSQL, args...).Scan(&total); err != nil {
+	if err := s.pool.QueryRow(ctx, "SELECT count(*) "+from+where, args...).Scan(&total); err != nil {
 		return nil, 0, err
 	}

+	// Ranking: when querying, similarity drives order, multiplied by a
+	// quality factor floored at 0.5 so low-quality records aren't zeroed out.
+	scoreExpr := "NULL::real"
+	orderBy := "p.quality_score DESC, p.name"
+	if f.Query != "" {
+		q := "$" + strconv.Itoa(qIdx)
+		scoreExpr = "word_similarity(" + q + ", p.name)"
+		orderBy = scoreExpr + " * (0.5 + p.quality_score) DESC, p.quality_score DESC, p.name"
+	}
+
 	args = append(args, limit, offset)
-	listSQL := `
-SELECT p.id, p.gtin, p.name, b.name, c.path::text
-FROM product p
-LEFT JOIN brand b ON b.id = p.brand_id
-LEFT JOIN category c ON c.id = p.category_id ` + where +
-		" ORDER BY p.name LIMIT $" + strconv.Itoa(len(args)-1) + " OFFSET $" + strconv.Itoa(len(args))
+	listSQL := "SELECT p.id, p.gtin, p.name, b.name, c.path::text, p.country_of_origin, p.quality_score, " +
+		scoreExpr + " AS score " + from + where +
+		" ORDER BY " + orderBy +
+		" LIMIT $" + strconv.Itoa(len(args)-1) + " OFFSET $" + strconv.Itoa(len(args))

 	rows, err := s.pool.Query(ctx, listSQL, args...)
 	if err != nil {
@@ -134,7 +328,8 @@ LEFT JOIN category c ON c.id = p.category_id ` + where +
 	out := []ProductSummary{}
 	for rows.Next() {
 		var ps ProductSummary
-		if err := rows.Scan(&ps.ID, &ps.GTIN, &ps.Name, &ps.Brand, &ps.CategoryPath); err != nil {
+		if err := rows.Scan(&ps.ID, &ps.GTIN, &ps.Name, &ps.Brand, &ps.CategoryPath,
+			&ps.Country, &ps.QualityScore, &ps.Score); err != nil {
 			return nil, 0, err
 		}
 		out = append(out, ps)
@@ -253,6 +448,31 @@ func (s *Store) ListCategories(ctx context.Context) ([]Category, error) {
 	return out, rows.Err()
 }

+// APIKey is the minimal metadata the public API needs to authorize a caller.
+type APIKey struct {
+	ID              string
+	Name            string
+	RateLimitPerMin int
+	QuotaTotal      int64
+}
+
+// APIKeyByHash returns the active (non-revoked) key matching a SHA-256 hash,
+// or ErrNotFound if no such active key exists.
+func (s *Store) APIKeyByHash(ctx context.Context, hash string) (*APIKey, error) {
+	var k APIKey
+	err := s.pool.QueryRow(ctx,
+		`SELECT id, name, rate_limit_per_min, quota_total
+		 FROM api_key WHERE key_hash = $1 AND revoked_at IS NULL`, hash,
+	).Scan(&k.ID, &k.Name, &k.RateLimitPerMin, &k.QuotaTotal)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &k, nil
+}
+
 // Source describes a data source with its license and trust weight.
 type Source struct {
 	ID          string  `json:"id"`
@@ -41,8 +41,8 @@ services:

  api:
    build:
-      context: ./api
-      dockerfile: Dockerfile.prod
+      context: .
+      dockerfile: api/Dockerfile.prod
    restart: unless-stopped
    depends_on:
      postgres:
@@ -56,6 +56,24 @@ services:
    ports:
      - "127.0.0.1:8120:8080"

+  admin:
+    build:
+      context: .
+      dockerfile: api/Dockerfile.admin
+    restart: unless-stopped
+    depends_on:
+      postgres:
+        condition: service_healthy
+    environment:
+      GOODS_ADMIN_ADDR: ":8080"
+      OPENGOODS_DATABASE_URL: "postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable"
+      GOODS_ADMIN_BASE_PATH: "/ping"
+      GOODS_ADMIN_USER: "${GOODS_ADMIN_USER}"
+      GOODS_ADMIN_PASSWORD: "${GOODS_ADMIN_PASSWORD}"
+      GOODS_ADMIN_JWT_SECRET: "${GOODS_ADMIN_JWT_SECRET}"
+    ports:
+      - "127.0.0.1:8121:8080"
+
 volumes:
  pgdata:
  miniodata:
@@ -0,0 +1,117 @@
+# OpenGoods 公共 API 开发者文档
+
+天工商品档案公共仓（OpenGoods）提供**公开、只读**的商品事实 REST API：按条码/名称查询商品的客观资料（品牌、品类、净含量、产地、配料、营养成分、Nutri-Score、厂商建议零售价快照等）。返回均为 JSON（UTF-8）。**本服务不含任何购买/交易接口。**
+
+- 基础地址：`https://goods.tangshasha.com/api/v1`
+- 机器可读规范（OpenAPI 3）：`GET /api/v1/openapi.json`
+- 交互式文档：站点「API 调用说明」页
+
+## 鉴权
+
+API 默认**匿名可用**，无需任何凭证即可调用。匿名请求按来源 IP 计入一个较低的默认每分钟额度。
+
+如需更高额度并让用量归属到你，可向运营方申请一枚 **API Key**（形如 `og_live_xxxxxxxx`），请求时二选一携带：
+
+```bash
+curl -H "X-API-Key: og_live_xxxxxxxx" \
+  "https://goods.tangshasha.com/api/v1/products/search?q=牛奶"
+
+# 或
+curl -H "Authorization: Bearer og_live_xxxxxxxx" \
+  "https://goods.tangshasha.com/api/v1/products/search?q=牛奶"
+```
+
+> 仅在创建时返回一次明文 Key，请妥善保存。服务端只存储其 SHA-256 哈希。
+
+## 限流
+
+采用**固定窗口**限流（每分钟）。每个响应都会回写以下响应头：
+
+| 响应头 | 含义 |
+| --- | --- |
+| `X-RateLimit-Limit` | 当前窗口允许的最大请求数 |
+| `X-RateLimit-Remaining` | 当前窗口剩余可用次数 |
+| `X-RateLimit-Reset` | 窗口重置的 Unix 时间戳（秒） |
+| `Retry-After` | 仅在超额（429）时返回，建议等待的秒数 |
+
+- 超过额度：`429 Too Many Requests`，错误码 `rate_limited`。
+- Key 无效或已吊销：`401 Unauthorized`，错误码 `invalid_api_key`。
+
+## 错误格式
+
+非 2xx 响应体统一为：
+
+```json
+{ "error": { "code": "not_found", "message": "…", "request_id": "…" } }
+```
+
+## 分页
+
+列表类接口支持 `page`（默认 `1`）与 `size`（默认 `20`，最大 `100`），响应含 `page`/`size`/`total`。
+
+## 端点
+
+### `GET /products/search` — 搜索商品
+
+按名称做三元组（trigram）模糊搜索，**可容忍错别字**；支持品类/品牌/产地过滤；结果按相关度（名称相似度 × 数据质量分）排序。
+
+| 参数 | 必填 | 说明 |
+| --- | --- | --- |
+| `q` | 否 | 关键词（名称/条码），模糊匹配；留空则按质量分返回全部 |
+| `category` | 否 | 品类编码（含子树），如 `food.beverages` |
+| `brand` | 否 | 品牌名（模糊匹配），如 `Ferrero` |
+| `country` | 否 | 产地前缀（不区分大小写），如 `China` |
+| `page` | 否 | 页码，默认 1 |
+| `size` | 否 | 每页条数，默认 20，最大 100 |
+
+```bash
+curl "https://goods.tangshasha.com/api/v1/products/search?q=nutela&country=Italy"
+```
+
+```json
+{
+  "items": [
+    {
+      "id": "…",
+      "gtin": "3017624010701",
+      "name": "Nutella",
+      "brand": "Ferrero",
+      "category_path": "food.snacks.chocolate",
+      "country_of_origin": "Italy",
+      "quality_score": 0.81,
+      "score": 0.71
+    }
+  ],
+  "page": 1,
+  "size": 20,
+  "total": 1
+}
+```
+
+`score` 为名称相关度（提供 `q` 时返回，0–1），未提供 `q` 时为 `null`。
+
+### `GET /products/barcode/{gtin}` — 按条码查询
+
+```bash
+curl "https://goods.tangshasha.com/api/v1/products/barcode/5449000000996"
+```
+
+### `GET /products/{id}` — 商品详情
+
+按商品 UUID 获取完整档案（含配料、营养、添加剂、图片、MSRP 等）。
+
+### `GET /products/{id}/nutriments` — 商品营养成分
+
+### `GET /products/{id}/msrp` — 厂商建议零售价快照
+
+官方建议零售价历史快照，仅供参考，不含任何购买入口。
+
+### `GET /brands` — 品牌列表（分页）
+
+### `GET /categories` — 品类树
+
+### `GET /sources/{id}` — 数据来源
+
+## 免责声明
+
+数据可能存在误差或滞后，按「现状」提供，不构成医疗/购买建议。商品资料版权归各原始来源所有，请遵循其许可（如 OpenFoodFacts 的 ODbL），引用时请注明天工商品档案公共仓及原始来源。
@@ -6,6 +6,7 @@
 - 所有服务 `restart: unless-stopped`。
 - 凭据从 `.env` 注入（见 `.env.example`），不写入仓库。
 - `api` 使用 `api/Dockerfile.prod`：运行镜像用 `scratch`（从构建镜像拷贝 ca-certs），适用于 `gcr.io/distroless` 不可达的环境；Go 模块走 `goproxy.cn`。
+- `admin`（运营后台）：带登录的写入服务 + 内嵌前端，绑定 `127.0.0.1:8121`，由 nginx 反代到公开站点的 `/ping` 路径。镜像 `api/Dockerfile.admin`（node 构建前端 → 内嵌进 Go 二进制 → scratch 运行）。仅 `admin` 可写库（人工编辑以 `source=manual` 记录字段级溯源 + `audit_log` 留痕），公开 `api` 仍只读。

 ## 步骤

@@ -23,3 +24,11 @@ curl -s http://127.0.0.1:8120/healthz   # {"status":"ok"}
 ```

 nginx 反代（子域 + HTTPS）：80 端口 301 跳转到 443，443 `proxy_pass http://127.0.0.1:8120`，证书用 acme.sh 签发并配 `--reloadcmd "nginx -s reload"` 自动续期。
+
+运营后台 `/ping`（同域复用证书）：在 443 server 块内加一段
+
+```nginx
+location /ping { proxy_pass http://127.0.0.1:8121; }
+```
+
+后台凭据见 `.env` 的 `GOODS_ADMIN_USER` / `GOODS_ADMIN_PASSWORD` / `GOODS_ADMIN_JWT_SECRET`。新增迁移 `0005_admin`（`audit_log` 表 + `manual` 来源）随 `migrate ... up` 自动应用。
@@ -0,0 +1,116 @@
+"""Adapter for the bypos-collector output (central product library zc.bypos.net).
+
+The ``bypos-collector`` tool (see ``tools/bypos-collector``) queries the same
+central product library that the 云店 POS uses when adding a product by barcode,
+and writes one JSON object per line (JSONL) with these fields::
+
+    barcode name spec unit area manufacturer license
+    in_price sell_price status retmsg fetched_at source
+
+This module turns one such record into the internal product shape consumed by
+:func:`opengoods.etl.load.load_bypos_record`. It is a pure function (no DB, no
+network) so it is easy to unit-test.
+
+The central library is a Chinese retail catalogue: it provides 品名/规格/单位/
+产地/厂商/建议价 but **not** ingredients or nutrition, so no ``food`` block is
+produced.
+"""
+
+from __future__ import annotations
+
+from decimal import Decimal, InvalidOperation
+
+from opengoods.etl.transform import _clamp, is_valid_gtin, parse_quantity
+from opengoods.units import UnitError, normalize
+
+SOURCE_NAME = "bypos中心库"
+SOURCE_HOMEPAGE = "https://zc.bypos.net"
+# Vendor catalogue data; not an open-licensed dataset. Display facts only.
+SOURCE_LICENSE = "proprietary"
+SOURCE_TRUST = 0.6
+
+
+def _to_price(text: str | None) -> Decimal | None:
+    """Parse a price string to a positive Decimal, or None for empty/zero."""
+    if not text:
+        return None
+    try:
+        amount = Decimal(str(text).strip())
+    except (InvalidOperation, ValueError):
+        return None
+    if amount <= 0:
+        return None
+    return amount
+
+
+def _net_content(spec: str | None) -> tuple[Decimal | None, str | None, Decimal | None]:
+    """Best-effort parse a spec like '500mL'/'5kg' to (value, unit, canonical).
+
+    Packaging-style specs ('20支', '1X24', '盒') have no mass/volume unit and
+    yield ``(None, None, None)`` — the raw spec is kept in attributes instead.
+    """
+    parsed = parse_quantity(spec or "")
+    if not parsed:
+        return None, None, None
+    value, unit = parsed
+    try:
+        norm = normalize(value, unit)
+    except UnitError:
+        return None, None, None
+    return norm.value, norm.unit, norm.canonical_value
+
+
+def transform_bypos(rec: dict) -> dict | None:
+    """Transform one bypos-collector JSONL record into an internal product dict.
+
+    Returns ``None`` for non-hit rows or rows without a usable name.
+    """
+    if rec.get("status") != "hit":
+        return None
+    name = (rec.get("name") or "").strip()
+    if not name:
+        return None
+
+    barcode = str(rec.get("barcode") or "").strip()
+    gtin = barcode if barcode and is_valid_gtin(barcode) else None
+
+    net_value, net_unit, net_canonical = _net_content(rec.get("spec"))
+
+    spec = (rec.get("spec") or "").strip()
+    pack_unit = (rec.get("unit") or "").strip()
+    area = (rec.get("area") or "").strip()
+    manufacturer = (rec.get("manufacturer") or "").strip() or None
+    license_no = (rec.get("license") or "").strip()
+    in_price = _to_price(rec.get("in_price"))
+    sell_price = _to_price(rec.get("sell_price"))
+
+    attributes: dict[str, object] = {}
+    if spec:
+        attributes["spec"] = spec
+    if pack_unit:
+        attributes["pack_unit"] = pack_unit
+    if area:
+        attributes["origin_area"] = area
+    if license_no:
+        attributes["production_license"] = license_no
+    if in_price is not None:
+        attributes["suggested_in_price"] = float(in_price)
+    if sell_price is not None:
+        attributes["suggested_retail_price"] = float(sell_price)
+
+    # Domestic GS1-China barcodes (69x) are China-made; area is a province/city,
+    # kept separately in attributes.origin_area.
+    country = "中国" if gtin and gtin.startswith("69") else None
+
+    return {
+        "gtin": gtin,
+        "name": name,
+        "manufacturer": manufacturer,
+        "net_content_value": net_value,
+        "net_content_unit": _clamp(net_unit, 16),
+        "net_content_canonical": net_canonical,
+        "country_of_origin": country,
+        "attributes": attributes,
+        "msrp": sell_price,
+        "fetched_at": (rec.get("fetched_at") or "").strip() or None,
+    }
@@ -27,6 +27,9 @@ _DEFAULT_MIN_INTERVAL = 4.0
 _API_URL = "https://world.openfoodfacts.org/api/v2/product/{barcode}.json"
 _SEARCH_URL = "https://world.openfoodfacts.org/api/v2/search"

+# HTTP statuses worth retrying: rate limiting and transient server errors.
+_RETRY_STATUS = frozenset({429, 500, 502, 503, 504})
+
 # Fields requested from the search API so a returned product can be transformed
 # without an extra per-barcode round trip.
 _SEARCH_FIELDS = (
@@ -46,9 +49,13 @@ class OpenFoodFactsAdapter:
        self,
        client: httpx.Client | None = None,
        min_interval: float = _DEFAULT_MIN_INTERVAL,
+        max_retries: int = 4,
+        backoff_base: float = 2.0,
    ) -> None:
        self._client = client or httpx.Client(headers={"User-Agent": USER_AGENT}, timeout=30.0)
        self._min_interval = min_interval
+        self._max_retries = max_retries
+        self._backoff_base = backoff_base
        self._last_call = 0.0

    def _throttle(self) -> None:
@@ -58,11 +65,49 @@ class OpenFoodFactsAdapter:
            time.sleep(wait)
        self._last_call = time.monotonic()

+    def _get(self, url: str, params: dict | None = None) -> httpx.Response:
+        """GET with throttling and retry/backoff on transient errors.
+
+        Retries on connection/timeout errors and on retryable HTTP statuses
+        (429 and 5xx, which OFF returns intermittently when overloaded), using
+        exponential backoff that honours a ``Retry-After`` header when present.
+        """
+        last_exc: Exception | None = None
+        for attempt in range(self._max_retries + 1):
+            self._throttle()
+            try:
+                resp = self._client.get(url, params=params)
+            except httpx.TransportError as exc:
+                last_exc = exc
+            else:
+                if resp.status_code < 400 or resp.status_code not in _RETRY_STATUS:
+                    resp.raise_for_status()
+                    return resp
+                last_exc = httpx.HTTPStatusError(
+                    f"retryable status {resp.status_code}", request=resp.request, response=resp
+                )
+            if attempt < self._max_retries:
+                retry_after = self._retry_after(last_exc)
+                time.sleep(retry_after if retry_after is not None else self._backoff_base**attempt)
+        assert last_exc is not None
+        raise last_exc
+
+    @staticmethod
+    def _retry_after(exc: Exception | None) -> float | None:
+        resp = getattr(exc, "response", None)
+        if resp is None:
+            return None
+        value = resp.headers.get("Retry-After")
+        if not value:
+            return None
+        try:
+            return float(value)
+        except ValueError:
+            return None
+
    def fetch_barcode(self, barcode: str) -> dict | None:
        """Fetch a single product by barcode; return the raw `product` dict."""
-        self._throttle()
-        resp = self._client.get(_API_URL.format(barcode=barcode))
-        resp.raise_for_status()
+        resp = self._get(_API_URL.format(barcode=barcode))
        payload = resp.json()
        if payload.get("status") != 1:
            return None
@@ -91,8 +136,7 @@ class OpenFoodFactsAdapter:
        ``last_modified_t`` they processed as the next watermark.
        """
        for page in range(1, max_pages + 1):
-            self._throttle()
-            resp = self._client.get(
+            resp = self._get(
                _SEARCH_URL,
                params={
                    "fields": _SEARCH_FIELDS,
@@ -101,7 +145,6 @@ class OpenFoodFactsAdapter:
                    "page_size": page_size,
                },
            )
-            resp.raise_for_status()
            products = resp.json().get("products") or []
            if not products:
                return
@@ -114,6 +157,60 @@ class OpenFoodFactsAdapter:
            if reached_old or len(products) < page_size:
                return

+    def fetch_by_country(
+        self,
+        country: str,
+        *,
+        page_size: int = 100,
+        max_pages: int = 10,
+        sort_by: str = "unique_scans_n",
+    ) -> Iterator[dict]:
+        """Yield products sold in ``country`` (an OFF ``countries_tags_en`` slug).
+
+        Used to seed a market-specific catalogue (e.g. ``china``). Results are
+        sorted by ``sort_by`` (default ``unique_scans_n`` so the most-scanned,
+        best-known products come first) and de-duplicated across pages, since
+        OFF's popularity ordering is not stable between page requests.
+        """
+        seen: set[str] = set()
+        for page in range(1, max_pages + 1):
+            resp = self._get(
+                _SEARCH_URL,
+                params={
+                    "fields": _SEARCH_FIELDS,
+                    "countries_tags_en": country,
+                    "sort_by": sort_by,
+                    "page": page,
+                    "page_size": page_size,
+                },
+            )
+            products = resp.json().get("products") or []
+            if not products:
+                return
+            new_on_page = 0
+            for prod in products:
+                code = str(prod.get("code") or "")
+                if code and code in seen:
+                    continue
+                if code:
+                    seen.add(code)
+                new_on_page += 1
+                yield prod
+            if len(products) < page_size or new_on_page == 0:
+                return
+
+
+def is_cn_gs1(code: str | None) -> bool:
+    """Return True for a GS1 China company prefix (barcodes starting 690-699).
+
+    These identify products registered with GS1 China, i.e. genuinely domestic
+    items, as opposed to imported goods merely tagged as sold in China.
+    """
+    if not code:
+        return False
+    code = code.strip()
+    return len(code) >= 3 and code[:2] == "69" and code[2].isdigit()
+

 def read_dump(path: str | Path) -> Iterator[dict]:
    """Yield raw product records from an OFF JSONL dump file.
@@ -7,17 +7,24 @@ source with field-level provenance in `product_source`.
 from __future__ import annotations

 import json
+import logging
 import os
 from typing import Any

 import psycopg
 from psycopg.types.json import Jsonb

+from opengoods.adapters.bypos import SOURCE_HOMEPAGE as SOURCE_HOMEPAGE_BYPOS
+from opengoods.adapters.bypos import SOURCE_LICENSE as SOURCE_LICENSE_BYPOS
+from opengoods.adapters.bypos import SOURCE_NAME as SOURCE_NAME_BYPOS
+from opengoods.adapters.bypos import SOURCE_TRUST as SOURCE_TRUST_BYPOS
 from opengoods.adapters.openfoodfacts import OFF_LICENSE, SOURCE_NAME
 from opengoods.etl.quality import update_quality

 OFF_HOMEPAGE = "https://world.openfoodfacts.org"

+logger = logging.getLogger(__name__)
+

 def default_dsn() -> str:
    return os.environ.get(
@@ -70,6 +77,23 @@ def _ensure_brand(conn: psycopg.Connection, name: str | None) -> str | None:
    return row[0]


+def _ensure_manufacturer(
+    conn: psycopg.Connection, name: str | None, country: str | None = None
+) -> str | None:
+    if not name:
+        return None
+    row = conn.execute(
+        """
+        INSERT INTO manufacturer (name, normalized_name, country)
+        VALUES (%s, %s, %s)
+        ON CONFLICT (normalized_name) DO UPDATE SET name = manufacturer.name
+        RETURNING id
+        """,
+        (name, _normalize_brand(name), country),
+    ).fetchone()
+    return row[0]
+
+
 def _category_id(conn: psycopg.Connection, path: str | None) -> tuple[str | None, str | None]:
    if not path:
        return None, None
@@ -196,6 +220,159 @@ def load_record(conn: psycopg.Connection, rec: dict[str, Any], source_id: str, r
    return product_id


+def load_record_safe(
+    conn: psycopg.Connection, rec: dict[str, Any], source_id: str, raw: dict
+) -> bool:
+    """Load one record inside a savepoint.
+
+    On success the record's writes stay in the surrounding transaction. On any
+    error, only this record's writes are rolled back (to the savepoint) and the
+    batch continues, so a single malformed source record cannot abort a large
+    import. Returns True if loaded, False if skipped due to an error.
+    """
+    try:
+        with conn.transaction():
+            load_record(conn, rec, source_id, raw)
+        return True
+    except Exception as exc:  # noqa: BLE001 - per-record isolation is intentional
+        logger.warning("skipping record gtin=%s: %s", rec.get("gtin"), exc)
+        return False
+
+
+def ensure_bypos_source(conn: psycopg.Connection) -> str:
+    """Upsert the bypos central-library source row and return its id."""
+    return ensure_source_named(
+        conn,
+        SOURCE_NAME_BYPOS,
+        SOURCE_HOMEPAGE_BYPOS,
+        SOURCE_LICENSE_BYPOS,
+        SOURCE_TRUST_BYPOS,
+    )
+
+
+def load_bypos_record(
+    conn: psycopg.Connection, rec: dict[str, Any], source_id: str, raw: dict
+) -> str:
+    """Upsert one transformed bypos record; return the product id.
+
+    Unlike OFF records these have no ingredients/nutrition, so no ``food_detail``
+    row is written. The suggested retail price (if any) is stored as a CNY MSRP
+    snapshot, and provenance/MSRP rows are keyed by source so a re-import
+    refreshes rather than duplicates them.
+    """
+    manufacturer_id = _ensure_manufacturer(
+        conn, rec.get("manufacturer"), rec.get("country_of_origin")
+    )
+    attrs = rec.get("attributes") or {}
+    fields = ["name", "net_content", "country_of_origin"]
+    if manufacturer_id:
+        fields.append("manufacturer")
+    if attrs:
+        fields.append("attributes")
+
+    if rec.get("gtin"):
+        fields.append("gtin")
+        prod = conn.execute(
+            """
+            INSERT INTO product (gtin, name, manufacturer_id,
+                net_content_value, net_content_unit, net_content_canonical,
+                country_of_origin, attributes)
+            VALUES (%s,%s,%s,%s,%s,%s,%s,%s)
+            ON CONFLICT (gtin) WHERE gtin IS NOT NULL DO UPDATE SET
+                name = EXCLUDED.name,
+                manufacturer_id = COALESCE(EXCLUDED.manufacturer_id, product.manufacturer_id),
+                net_content_value = COALESCE(EXCLUDED.net_content_value, product.net_content_value),
+                net_content_unit = COALESCE(EXCLUDED.net_content_unit, product.net_content_unit),
+                net_content_canonical = COALESCE(
+                    EXCLUDED.net_content_canonical, product.net_content_canonical),
+                country_of_origin = COALESCE(EXCLUDED.country_of_origin, product.country_of_origin),
+                attributes = product.attributes || EXCLUDED.attributes
+            RETURNING id
+            """,
+            (
+                rec["gtin"],
+                rec["name"],
+                manufacturer_id,
+                rec.get("net_content_value"),
+                rec.get("net_content_unit"),
+                rec.get("net_content_canonical"),
+                rec.get("country_of_origin"),
+                Jsonb(attrs),
+            ),
+        ).fetchone()
+    else:
+        prod = conn.execute(
+            """
+            INSERT INTO product (name, manufacturer_id,
+                net_content_value, net_content_unit, net_content_canonical,
+                country_of_origin, attributes)
+            VALUES (%s,%s,%s,%s,%s,%s,%s)
+            RETURNING id
+            """,
+            (
+                rec["name"],
+                manufacturer_id,
+                rec.get("net_content_value"),
+                rec.get("net_content_unit"),
+                rec.get("net_content_canonical"),
+                rec.get("country_of_origin"),
+                Jsonb(attrs),
+            ),
+        ).fetchone()
+    product_id = prod[0]
+
+    # Refresh this source's MSRP snapshot (suggested retail price, CNY).
+    conn.execute(
+        "DELETE FROM product_msrp WHERE product_id = %s AND source_id = %s",
+        (product_id, source_id),
+    )
+    if rec.get("msrp") is not None:
+        conn.execute(
+            """
+            INSERT INTO product_msrp (product_id, amount, currency, region, source_id, source_url)
+            VALUES (%s,%s,'CNY','CN',%s,%s)
+            """,
+            (product_id, rec["msrp"], source_id, SOURCE_HOMEPAGE_BYPOS),
+        )
+        fields.append("msrp")
+
+    # Refresh this source's provenance row (one per source for idempotency).
+    conn.execute(
+        "DELETE FROM product_source WHERE product_id = %s AND source_id = %s",
+        (product_id, source_id),
+    )
+    conn.execute(
+        """
+        INSERT INTO product_source (product_id, source_id, url, fields, fetched_at, raw)
+        VALUES (%s,%s,%s,%s, COALESCE(%s::timestamptz, now()), %s)
+        """,
+        (
+            product_id,
+            source_id,
+            SOURCE_HOMEPAGE_BYPOS,
+            fields,
+            rec.get("fetched_at"),
+            Jsonb(_jsonable(raw)),
+        ),
+    )
+
+    update_quality(conn, product_id)
+    return product_id
+
+
+def load_bypos_record_safe(
+    conn: psycopg.Connection, rec: dict[str, Any], source_id: str, raw: dict
+) -> bool:
+    """Load one bypos record inside a savepoint (see :func:`load_record_safe`)."""
+    try:
+        with conn.transaction():
+            load_bypos_record(conn, rec, source_id, raw)
+        return True
+    except Exception as exc:  # noqa: BLE001 - per-record isolation is intentional
+        logger.warning("skipping bypos record gtin=%s: %s", rec.get("gtin"), exc)
+        return False
+
+
 def _jsonable(raw: dict) -> dict:
    """Drop values that are not JSON-serializable from a raw record."""
    try:
@@ -78,6 +78,14 @@ def map_category(raw: dict) -> str | None:
    return None


+def _clamp(value: str | None, max_len: int) -> str | None:
+    """Trim a string to fit a bounded DB column; external data length varies."""
+    if value is None:
+        return None
+    value = value.strip()
+    return value[:max_len] or None
+
+
 def _clean_tags(tags: list[str] | None, prefix: str = "") -> list[str]:
    out: list[str] = []
    for t in tags or []:
@@ -143,16 +151,16 @@ def transform(raw: dict) -> dict | None:
        "brand": brand,
        "category_path": map_category(raw),
        "net_content_value": net_value,
-        "net_content_unit": net_unit,
+        "net_content_unit": _clamp(net_unit, 16),
        "net_content_canonical": net_canonical,
-        "country_of_origin": (raw.get("countries") or "").split(",")[0].strip() or None,
+        "country_of_origin": _clamp((raw.get("countries") or "").split(",")[0].strip() or None, 64),
        "food": {
            "ingredients_text": raw.get("ingredients_text") or None,
            "allergens": _clean_tags(raw.get("allergens_tags")),
            "additives": _clean_tags(raw.get("additives_tags")),
            "nutriments": transform_nutriments(raw.get("nutriments") or {}),
            "nutrition_basis": "per_100g",
-            "serving_size": raw.get("serving_size") or None,
+            "serving_size": _clamp(raw.get("serving_size") or None, 32),
            "nutri_score": (raw.get("nutriscore_grade") or "").upper()[:1] or None,
        },
        "image_url": raw.get("image_front_url") or raw.get("image_url") or None,
@@ -0,0 +1,77 @@
+"""Import products collected by the bypos-collector tool into OpenGoods.
+
+The ``tools/bypos-collector`` program writes one product per line (JSONL). This
+job reads such a file, transforms each ``hit`` record into the internal product
+shape, and upserts it into the database under the ``bypos中心库`` source with
+field-level provenance.
+
+Usage::
+
+    python -m opengoods.jobs.import_bypos --input products.jsonl
+    python -m opengoods.jobs.import_bypos --input products.jsonl --limit 500
+
+Re-running is safe: products are upserted by GTIN and the source's MSRP/
+provenance rows are refreshed rather than duplicated.
+"""
+
+from __future__ import annotations
+
+import argparse
+import gzip
+import json
+import sys
+from collections.abc import Iterator
+
+import psycopg
+
+from opengoods.adapters.bypos import transform_bypos
+from opengoods.etl.load import default_dsn, ensure_bypos_source, load_bypos_record_safe
+
+
+def _read_jsonl(path: str) -> Iterator[dict]:
+    opener = gzip.open if path.endswith(".gz") else open
+    with opener(path, "rt", encoding="utf-8") as fh:
+        for line in fh:
+            line = line.strip()
+            if not line:
+                continue
+            try:
+                yield json.loads(line)
+            except json.JSONDecodeError:
+                continue
+
+
+def run(args: argparse.Namespace) -> int:
+    loaded = skipped = errored = 0
+    with psycopg.connect(args.dsn, autocommit=False) as conn:
+        source_id = ensure_bypos_source(conn)
+        yielded = 0
+        for raw in _read_jsonl(args.input):
+            if args.limit and yielded >= args.limit:
+                break
+            rec = transform_bypos(raw)
+            if rec is None:
+                skipped += 1
+                continue
+            yielded += 1
+            if load_bypos_record_safe(conn, rec, source_id, raw):
+                loaded += 1
+            else:
+                errored += 1
+        conn.commit()
+    print(f"loaded={loaded} skipped={skipped} errored={errored}")
+    return 0
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="Import bypos-collector JSONL into OpenGoods")
+    parser.add_argument(
+        "--input", required=True, help="path to a bypos-collector JSONL (.jsonl or .jsonl.gz)"
+    )
+    parser.add_argument("--limit", type=int, default=0, help="max hit records to load (0 = all)")
+    parser.add_argument("--dsn", default=default_dsn(), help="PostgreSQL DSN")
+    return run(parser.parse_args(argv))
+
+
+if __name__ == "__main__":
+    sys.exit(main())
@@ -7,6 +7,11 @@ Usage:
    # from a downloaded OFF JSONL dump (optionally .gz), limited to N records
    python -m opengoods.jobs.seed_off --dump products.jsonl.gz --limit 1000

+    # market-focused: the most-scanned products sold in China, restricted to
+    # genuine GS1-China (69x) barcodes
+    python -m opengoods.jobs.seed_off --country china --domestic-only \
+        --max-pages 20 --limit 1000
+
 The OFF read API is rate-limited client-side; for large imports use a dump.
 """

@@ -18,25 +23,38 @@ from collections.abc import Iterator

 import psycopg

-from opengoods.adapters.openfoodfacts import OpenFoodFactsAdapter, read_dump
-from opengoods.etl.load import default_dsn, ensure_source, load_record
+from opengoods.adapters.openfoodfacts import (
+    OpenFoodFactsAdapter,
+    is_cn_gs1,
+    read_dump,
+)
+from opengoods.etl.load import default_dsn, ensure_source, load_record_safe
 from opengoods.etl.transform import transform


 def _raw_records(args: argparse.Namespace) -> Iterator[dict]:
    if args.dump:
-        records = read_dump(args.dump)
+        records: Iterator[dict] = read_dump(args.dump)
+    elif args.country:
+        adapter = OpenFoodFactsAdapter(min_interval=args.min_interval)
+        records = adapter.fetch_by_country(
+            args.country, page_size=args.page_size, max_pages=args.max_pages
+        )
    else:
        adapter = OpenFoodFactsAdapter(min_interval=args.min_interval)
        records = adapter.fetch(args.barcodes)
-    for i, rec in enumerate(records):
-        if args.limit and i >= args.limit:
+    yielded = 0
+    for rec in records:
+        if args.domestic_only and not is_cn_gs1(str(rec.get("code") or "")):
+            continue
+        if args.limit and yielded >= args.limit:
            break
+        yielded += 1
        yield rec


 def run(args: argparse.Namespace) -> int:
-    loaded = skipped = 0
+    loaded = skipped = errored = 0
    with psycopg.connect(args.dsn, autocommit=False) as conn:
        source_id = ensure_source(conn)
        for raw in _raw_records(args):
@@ -44,10 +62,12 @@ def run(args: argparse.Namespace) -> int:
            if rec is None:
                skipped += 1
                continue
-            load_record(conn, rec, source_id, raw)
-            loaded += 1
+            if load_record_safe(conn, rec, source_id, raw):
+                loaded += 1
+            else:
+                errored += 1
        conn.commit()
-    print(f"loaded={loaded} skipped={skipped}")
+    print(f"loaded={loaded} skipped={skipped} errored={errored}")
    return 0


@@ -56,7 +76,18 @@ def main(argv: list[str] | None = None) -> int:
    src = parser.add_mutually_exclusive_group(required=True)
    src.add_argument("--barcodes", nargs="+", help="barcodes to fetch via the OFF API")
    src.add_argument("--dump", help="path to an OFF JSONL dump (.jsonl or .jsonl.gz)")
+    src.add_argument(
+        "--country",
+        help="OFF countries_tags_en slug to seed from, e.g. 'china' (most-scanned first)",
+    )
+    parser.add_argument(
+        "--domestic-only",
+        action="store_true",
+        help="keep only genuine GS1-China (69x) barcodes; drop imported goods",
+    )
    parser.add_argument("--limit", type=int, default=0, help="max records to load (0 = all)")
+    parser.add_argument("--page-size", type=int, default=100, help="search page size")
+    parser.add_argument("--max-pages", type=int, default=10, help="max search pages (country mode)")
    parser.add_argument("--min-interval", type=float, default=4.0, help="API throttle seconds")
    parser.add_argument("--dsn", default=default_dsn(), help="PostgreSQL DSN")
    return run(parser.parse_args(argv))
@@ -17,14 +17,14 @@ import sys
 import psycopg

 from opengoods.adapters.openfoodfacts import SOURCE_NAME, OpenFoodFactsAdapter
-from opengoods.etl.load import default_dsn, ensure_source, load_record
+from opengoods.etl.load import default_dsn, ensure_source, load_record_safe
 from opengoods.etl.state import get_watermark, set_watermark
 from opengoods.etl.transform import transform


 def run(args: argparse.Namespace) -> int:
    adapter = OpenFoodFactsAdapter(min_interval=args.min_interval)
-    loaded = skipped = 0
+    loaded = skipped = errored = 0
    high_watermark = 0
    with psycopg.connect(args.dsn, autocommit=False) as conn:
        source_id = ensure_source(conn)
@@ -38,16 +38,21 @@ def run(args: argparse.Namespace) -> int:
            if rec is None:
                skipped += 1
                continue
-            load_record(conn, rec, source_id, raw)
-            loaded += 1
+            if load_record_safe(conn, rec, source_id, raw):
+                loaded += 1
+            else:
+                errored += 1
        set_watermark(
            conn,
            SOURCE_NAME,
            high_watermark,
-            stats={"loaded": loaded, "skipped": skipped, "since": since},
+            stats={"loaded": loaded, "skipped": skipped, "errored": errored, "since": since},
        )
        conn.commit()
-    print(f"since={since} loaded={loaded} skipped={skipped} watermark={high_watermark}")
+    print(
+        f"since={since} loaded={loaded} skipped={skipped} "
+        f"errored={errored} watermark={high_watermark}"
+    )
    return 0


@@ -0,0 +1,155 @@
+"""Tests for the bypos-collector adapter/transform and DB loader.
+
+The pure-function tests run anywhere; the DB roundtrip is skipped automatically
+when no database is reachable or migrations are not applied.
+"""
+
+from __future__ import annotations
+
+from decimal import Decimal
+
+import pytest
+
+from opengoods.adapters.bypos import transform_bypos
+
+psycopg = pytest.importorskip("psycopg")
+
+# A real central-library "hit" row as emitted by the collector.
+HIT = {
+    "barcode": "6901028941068",
+    "name": "泰山合悦",
+    "spec": "20支",
+    "unit": "盒",
+    "area": "广东",
+    "manufacturer": "",
+    "license": "",
+    "in_price": "22.50",
+    "sell_price": "28.00",
+    "status": "hit",
+    "retmsg": "获取商品信息成功",
+    "fetched_at": "2026-06-24T02:08:34Z",
+    "source": "zc.bypos.net",
+}
+
+# A hit with a real mass/volume spec that should normalize to net content.
+HIT_VOLUME = {
+    "barcode": "6920459905012",
+    "name": "康师傅冰红茶490ml",
+    "spec": "490毫升",
+    "unit": "瓶",
+    "area": "浙江杭州",
+    "manufacturer": "",
+    "license": "",
+    "in_price": "2.20",
+    "sell_price": "3.00",
+    "status": "hit",
+    "fetched_at": "2026-06-24T02:08:34Z",
+    "source": "zc.bypos.net",
+}
+
+
+def test_transform_skips_non_hit():
+    assert transform_bypos({**HIT, "status": "miss", "name": ""}) is None
+    assert transform_bypos({**HIT, "status": "invalid"}) is None
+
+
+def test_transform_skips_missing_name():
+    assert transform_bypos({**HIT, "name": "  "}) is None
+
+
+def test_transform_packaging_spec_kept_raw():
+    rec = transform_bypos(HIT)
+    assert rec is not None
+    assert rec["gtin"] == "6901028941068"
+    assert rec["name"] == "泰山合悦"
+    # '20支' is a count, not mass/volume -> no net_content, raw spec retained.
+    assert rec["net_content_value"] is None
+    assert rec["net_content_unit"] is None
+    assert rec["attributes"]["spec"] == "20支"
+    assert rec["attributes"]["pack_unit"] == "盒"
+    assert rec["attributes"]["origin_area"] == "广东"
+    assert rec["attributes"]["suggested_in_price"] == 22.5
+    assert rec["attributes"]["suggested_retail_price"] == 28.0
+    assert rec["msrp"] == Decimal("28.00")
+    assert rec["country_of_origin"] == "中国"
+
+
+def test_transform_volume_spec_normalized():
+    rec = transform_bypos(HIT_VOLUME)
+    assert rec is not None
+    assert rec["net_content_value"] == Decimal("490")
+    assert rec["net_content_unit"] == "ml"
+    assert rec["net_content_canonical"] == Decimal("490")
+    assert rec["attributes"]["origin_area"] == "浙江杭州"
+
+
+def test_transform_zero_price_dropped():
+    rec = transform_bypos({**HIT, "in_price": "0.00", "sell_price": "0.00"})
+    assert rec is not None
+    assert rec["msrp"] is None
+    assert "suggested_in_price" not in rec["attributes"]
+    assert "suggested_retail_price" not in rec["attributes"]
+
+
+def test_transform_invalid_barcode_no_gtin():
+    rec = transform_bypos({**HIT, "barcode": "123"})
+    assert rec is not None
+    assert rec["gtin"] is None
+    assert rec["country_of_origin"] is None
+
+
+# --- DB roundtrip (skipped without a database) ---------------------------------
+
+
+@pytest.fixture()
+def conn():
+    from opengoods.etl.load import default_dsn
+
+    try:
+        c = psycopg.connect(default_dsn(), connect_timeout=3)
+    except psycopg.OperationalError as exc:  # pragma: no cover - env dependent
+        pytest.skip(f"no database available: {exc}")
+    has_product = c.execute("SELECT to_regclass('public.product') IS NOT NULL").fetchone()[0]
+    if not has_product:
+        c.close()
+        pytest.skip("migrations not applied")
+    yield c
+    c.rollback()
+    c.close()
+
+
+def test_load_bypos_roundtrip(conn):
+    from opengoods.etl.load import ensure_bypos_source, load_bypos_record
+
+    source_id = ensure_bypos_source(conn)
+    rec = transform_bypos(HIT_VOLUME)
+    product_id = load_bypos_record(conn, rec, source_id, HIT_VOLUME)
+
+    row = conn.execute(
+        "SELECT name, gtin, net_content_unit, country_of_origin, attributes ->> 'pack_unit' "
+        "FROM product WHERE id = %s",
+        (product_id,),
+    ).fetchone()
+    assert row[0] == "康师傅冰红茶490ml"
+    assert row[1] == "6920459905012"
+    assert row[2] == "ml"
+    assert row[3] == "中国"
+    assert row[4] == "瓶"
+
+    msrp = conn.execute(
+        "SELECT amount, currency FROM product_msrp WHERE product_id = %s AND source_id = %s",
+        (product_id, source_id),
+    ).fetchone()
+    assert msrp[0] == Decimal("3.00")
+    assert msrp[1] == "CNY"
+
+    # Re-import is idempotent: still one MSRP and one provenance row per source.
+    load_bypos_record(conn, rec, source_id, HIT_VOLUME)
+    counts = conn.execute(
+        "SELECT (SELECT count(*) FROM product_msrp WHERE product_id=%s AND source_id=%s), "
+        "(SELECT count(*) FROM product_source WHERE product_id=%s AND source_id=%s)",
+        (product_id, source_id, product_id, source_id),
+    ).fetchone()
+    assert counts == (1, 1)
+
+    conn.rollback()
@@ -11,7 +11,7 @@ from pathlib import Path

 import pytest

-from opengoods.etl.load import default_dsn, ensure_source, load_record
+from opengoods.etl.load import default_dsn, ensure_source, load_record, load_record_safe
 from opengoods.etl.transform import transform

 psycopg = pytest.importorskip("psycopg")
@@ -59,3 +59,25 @@ def test_load_record_roundtrip(conn):
    assert prov[0] >= 1

    conn.rollback()  # keep the test DB clean
+
+
+def test_load_record_safe_isolates_bad_record(conn):
+    source_id = ensure_source(conn)
+
+    # Unique gtin so the good record is a fresh INSERT, not an upsert/update.
+    good = transform(FIXTURE)
+    good["gtin"] = "4006381333931"
+    assert load_record_safe(conn, good, source_id, FIXTURE) is True
+    after_good = conn.execute("SELECT count(*) FROM product").fetchone()[0]
+
+    # A record whose name violates NOT NULL must not abort the batch.
+    bad = dict(good)
+    bad["gtin"] = "5000112637922"
+    bad["name"] = None
+    assert load_record_safe(conn, bad, source_id, {}) is False
+
+    # The good record survived the bad one's rollback-to-savepoint.
+    after_bad = conn.execute("SELECT count(*) FROM product").fetchone()[0]
+    assert after_bad == after_good
+
+    conn.rollback()  # keep the test DB clean
@@ -0,0 +1,53 @@
+import httpx
+
+from opengoods.adapters.openfoodfacts import OpenFoodFactsAdapter, is_cn_gs1
+
+
+def _adapter(handler, **kwargs):
+    client = httpx.Client(transport=httpx.MockTransport(handler))
+    return OpenFoodFactsAdapter(client=client, min_interval=0, backoff_base=0, **kwargs)
+
+
+def test_is_cn_gs1():
+    assert is_cn_gs1("6901234567892")  # GS1 China prefix
+    assert is_cn_gs1("690")
+    assert not is_cn_gs1("3017624010701")  # France
+    assert not is_cn_gs1("5449000000996")  # Belgium
+    assert not is_cn_gs1("")
+    assert not is_cn_gs1(None)
+    assert not is_cn_gs1("69")  # too short to carry a prefix digit
+
+
+def test_fetch_by_country_passes_filter_and_paginates():
+    seen_params = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        seen_params.append(dict(request.url.params))
+        page = int(request.url.params.get("page", "1"))
+        if page == 1:
+            return httpx.Response(
+                200,
+                json={"products": [{"code": "6901"}, {"code": "6902"}]},
+            )
+        return httpx.Response(200, json={"products": []})
+
+    adapter = _adapter(handler)
+    out = list(adapter.fetch_by_country("china", page_size=2, max_pages=5))
+    assert [p["code"] for p in out] == ["6901", "6902"]
+    assert seen_params[0]["countries_tags_en"] == "china"
+    assert seen_params[0]["sort_by"] == "unique_scans_n"
+
+
+def test_fetch_by_country_dedupes_across_pages():
+    def handler(request: httpx.Request) -> httpx.Response:
+        page = int(request.url.params.get("page", "1"))
+        if page == 1:
+            return httpx.Response(200, json={"products": [{"code": "6901"}, {"code": "6902"}]})
+        if page == 2:
+            # OFF popularity ordering is unstable; a repeat appears on page 2
+            return httpx.Response(200, json={"products": [{"code": "6902"}, {"code": "6903"}]})
+        return httpx.Response(200, json={"products": []})
+
+    adapter = _adapter(handler)
+    out = [p["code"] for p in adapter.fetch_by_country("china", page_size=2, max_pages=5)]
+    assert out == ["6901", "6902", "6903"]
@@ -0,0 +1,59 @@
+import httpx
+import pytest
+
+from opengoods.adapters.openfoodfacts import OpenFoodFactsAdapter
+
+
+def _adapter(handler, **kwargs):
+    client = httpx.Client(transport=httpx.MockTransport(handler))
+    return OpenFoodFactsAdapter(client=client, min_interval=0, backoff_base=0, **kwargs)
+
+
+def test_retries_transient_5xx_then_succeeds():
+    calls = {"n": 0}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        calls["n"] += 1
+        if calls["n"] < 3:
+            return httpx.Response(503)
+        return httpx.Response(200, json={"status": 1, "product": {"code": "x"}})
+
+    adapter = _adapter(handler, max_retries=4)
+    assert adapter.fetch_barcode("x") == {"code": "x"}
+    assert calls["n"] == 3  # two 503s retried, third succeeds
+
+
+def test_retries_exhausted_raises():
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(503)
+
+    adapter = _adapter(handler, max_retries=2)
+    with pytest.raises(httpx.HTTPStatusError):
+        adapter.fetch_barcode("x")
+
+
+def test_non_retryable_4xx_not_retried():
+    calls = {"n": 0}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        calls["n"] += 1
+        return httpx.Response(404)
+
+    adapter = _adapter(handler, max_retries=4)
+    with pytest.raises(httpx.HTTPStatusError):
+        adapter.fetch_barcode("x")
+    assert calls["n"] == 1  # 404 is not retried
+
+
+def test_retries_connection_error_then_succeeds():
+    calls = {"n": 0}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        calls["n"] += 1
+        if calls["n"] == 1:
+            raise httpx.ConnectError("boom")
+        return httpx.Response(200, json={"status": 1, "product": {"code": "y"}})
+
+    adapter = _adapter(handler, max_retries=4)
+    assert adapter.fetch_barcode("y") == {"code": "y"}
+    assert calls["n"] == 2
@@ -65,3 +65,14 @@ def test_transform_full_record():

 def test_transform_drops_unnamed():
    assert transform({"code": "0000000000000"}) is None
+
+
+def test_transform_clamps_long_serving_size():
+    raw = {
+        "code": "3017624010701",
+        "product_name": "X",
+        "serving_size": "1 portion (30 g) / 1 portion (30 g) / extra long descriptive text here",
+    }
+    rec = transform(raw)
+    assert rec is not None
+    assert len(rec["food"]["serving_size"]) == 32
@@ -0,0 +1,4 @@
+DROP INDEX IF EXISTS idx_audit_created;
+DROP INDEX IF EXISTS idx_audit_entity;
+DROP TABLE IF EXISTS audit_log;
+DELETE FROM source WHERE name = 'manual';
@@ -0,0 +1,22 @@
+-- Admin console support: manual edit provenance + audit log.
+
+-- Manual-entry source used to record field-level provenance for operator edits.
+INSERT INTO source (name, homepage, license, trust_weight, notes)
+VALUES ('manual', NULL, 'proprietary', 0.90, '运营人工录入/补全')
+ON CONFLICT (name) DO NOTHING;
+
+-- Audit trail: every admin write records actor, action, entity and before/after.
+CREATE TABLE IF NOT EXISTS audit_log (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    actor      TEXT NOT NULL,
+    action     TEXT NOT NULL,
+    entity     TEXT NOT NULL,
+    entity_id  UUID,
+    fields     TEXT[] NOT NULL DEFAULT '{}',
+    before     JSONB,
+    after      JSONB,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_audit_entity ON audit_log (entity, entity_id);
+CREATE INDEX IF NOT EXISTS idx_audit_created ON audit_log (created_at DESC);
@@ -0,0 +1 @@
+DROP TABLE IF EXISTS submission;
@@ -0,0 +1,30 @@
+-- Community contributions: public users may submit new/supplementary product
+-- archives. Submissions go to a moderation queue and never touch the product
+-- tables until an admin approves them.
+
+-- Community source used to record field-level provenance for approved
+-- public contributions (lower trust than manual operator edits).
+INSERT INTO source (name, homepage, license, trust_weight, notes)
+VALUES ('community', NULL, 'user-contributed', 0.50, '公众投稿/众包贡献，经人工审核后收纳')
+ON CONFLICT (name) DO NOTHING;
+
+CREATE TABLE IF NOT EXISTS submission (
+    id                UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    gtin              VARCHAR(14),
+    name              TEXT NOT NULL,
+    payload           JSONB NOT NULL DEFAULT '{}',
+    target_product_id UUID REFERENCES product(id) ON DELETE SET NULL,
+    result_product_id UUID REFERENCES product(id) ON DELETE SET NULL,
+    submitter_name    TEXT,
+    submitter_contact TEXT,
+    note              TEXT,
+    status            VARCHAR(16) NOT NULL DEFAULT 'pending',
+    review_note       TEXT,
+    reviewed_by       TEXT,
+    reviewed_at       TIMESTAMPTZ,
+    remote_ip         TEXT,
+    created_at        TIMESTAMPTZ NOT NULL DEFAULT now(),
+    CONSTRAINT submission_status_chk CHECK (status IN ('pending','approved','rejected'))
+);
+
+CREATE INDEX IF NOT EXISTS idx_submission_status ON submission (status, created_at DESC);
@@ -0,0 +1 @@
+DROP TABLE IF EXISTS product_barcode;
@@ -0,0 +1,36 @@
+-- Multi-barcode support: one product can carry many GS1 barcodes
+-- (consumer unit EAN-13/UPC, case ITF-14, regional re-labels, etc.).
+-- product.gtin is kept as the denormalized "primary" barcode for
+-- backward compatibility and is mirrored from the is_primary row here.
+
+CREATE TABLE product_barcode (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id UUID NOT NULL REFERENCES product(id) ON DELETE CASCADE,
+    gtin       VARCHAR(14) NOT NULL,
+    gtin_type  VARCHAR(8) NOT NULL DEFAULT 'EAN13',
+    pack_level VARCHAR(8) NOT NULL DEFAULT 'each',
+    region     VARCHAR(8),
+    is_primary BOOLEAN NOT NULL DEFAULT false,
+    source_id  UUID REFERENCES source(id),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    CONSTRAINT product_barcode_type_chk CHECK (gtin_type IN ('EAN8','UPC','EAN13','ITF14','GTIN14')),
+    CONSTRAINT product_barcode_pack_chk CHECK (pack_level IN ('each','case','pallet'))
+);
+
+-- A barcode is globally unique: one code maps to exactly one product.
+CREATE UNIQUE INDEX idx_product_barcode_gtin ON product_barcode (gtin);
+CREATE INDEX idx_product_barcode_product ON product_barcode (product_id);
+-- At most one primary barcode per product.
+CREATE UNIQUE INDEX idx_product_barcode_primary ON product_barcode (product_id) WHERE is_primary;
+
+-- Backfill: lift each product's existing gtin into the new table as primary.
+INSERT INTO product_barcode (product_id, gtin, gtin_type, pack_level, is_primary)
+SELECT id, gtin,
+       CASE WHEN length(gtin) = 8 THEN 'EAN8'
+            WHEN length(gtin) = 12 THEN 'UPC'
+            WHEN length(gtin) = 14 THEN 'GTIN14'
+            ELSE 'EAN13' END,
+       'each', true
+FROM product
+WHERE gtin IS NOT NULL AND gtin <> ''
+ON CONFLICT (gtin) DO NOTHING;
@@ -0,0 +1 @@
+DROP TABLE IF EXISTS api_key;
@@ -0,0 +1,24 @@
+-- API keys for the public read-only API. Keys grant higher rate limits and let
+-- usage be attributed to a caller; the API itself stays free and read-only.
+-- Only the SHA-256 hash of a key is stored; the plaintext is shown once at
+-- creation time. Keys are issued/revoked from the admin console. The public
+-- server only ever SELECTs from this table (request counting lives in Redis),
+-- preserving its read-only contract against PostgreSQL.
+CREATE TABLE IF NOT EXISTS api_key (
+    id                 UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name               TEXT NOT NULL,
+    key_prefix         VARCHAR(20) NOT NULL,         -- shown for identification, e.g. og_live_AbC1
+    key_hash           TEXT NOT NULL UNIQUE,         -- hex SHA-256 of the full key
+    owner_email        TEXT,
+    tier               VARCHAR(16) NOT NULL DEFAULT 'free',
+    rate_limit_per_min INT NOT NULL DEFAULT 120,
+    revoked_at         TIMESTAMPTZ,
+    created_by         TEXT,
+    created_at         TIMESTAMPTZ NOT NULL DEFAULT now(),
+    CONSTRAINT api_key_tier_chk CHECK (tier IN ('free', 'partner', 'internal')),
+    CONSTRAINT api_key_rate_chk CHECK (rate_limit_per_min > 0)
+);
+
+-- Fast lookup of active keys by their hash on every authenticated request.
+CREATE INDEX IF NOT EXISTS idx_api_key_active_hash
+    ON api_key (key_hash) WHERE revoked_at IS NULL;
@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS idx_product_country;
+DROP INDEX IF EXISTS idx_brand_name_trgm;
@@ -0,0 +1,9 @@
+-- Search upgrade: trigram-based fuzzy matching + brand/country filters.
+-- pg_trgm and the product.name GIN index already exist (see 0001). Add a
+-- matching trigram index on brand.name so brand filtering / fuzzy brand
+-- lookups can use an index instead of a sequential scan.
+CREATE INDEX IF NOT EXISTS idx_brand_name_trgm ON brand USING gin (name gin_trgm_ops);
+
+-- country_of_origin is filtered by exact/prefix match; a plain btree index
+-- keeps that cheap as the catalog grows.
+CREATE INDEX IF NOT EXISTS idx_product_country ON product (country_of_origin);
--- a/Show More
+++ b/Show More