refactor(P1): 5 项代码质量改进 — 消除重复、拆分巨型组件、统一基础设施

Task 4: 统一 amap.ts 为完整 API 客户端
- 扩展 amap.ts 为统一客户端（amapFetch 8s 超时 + 错误处理）
- 导出 searchPlaceText/searchPlaceAround/getInputTips/reverseGeocode/getTransitDirection
- 精简 4 个 location route 为单行调用，blindboxPlanGen 删除 ~80 行内联 API 代码

Task 2: 抽取 ShareCardShell 消除三兄弟重复
- 新建 ShareCardShell.tsx 共享外框/背景/品牌头/QR 底部
- RestaurantShareCard 406→268 行，BlindboxShareCard 341→173 行，BlindboxPlanShareCard 277→159 行

Task 3: 拆分 BlindboxPlan.tsx (742→371 行)
- 提取 planUtils.ts (guessCategory + formatDuration)
- 提取 PoiSearchField / SortablePlanItem / PlanItemEditModal 三个独立组件

Task 1: 拆分 blindbox/[code]/page.tsx 上帝组件 (1300→509 行)
- 提取 useBlindboxRoom / useBlindboxIdeas / useBlindboxPlan / useBlindboxDraw 四个 hooks
- 提取 BlindboxPoolPhase / BlindboxRevealPhase 两个子组件
- 主页面仅保留 phase 协调 + hook 组装 + 子组件渲染

Task 5: 统一 SWR 数据获取层
- 新建 fetcher.ts (FetchError 携带 status，401 不重试)
- 新建 useBlindboxRooms / useAchievements / useFavorites SWR hooks
- useRoomPolling 改用共享 fetcher
- blindbox 大厅/成就/个人中心页面删除手写 fetch 样板代码
- JWT 过期时自动弹出登录框而非反复重试

src/app/api/location/search/route.test.ts

@@ -3,13 +3,11 @@ import { createRequest, parseJsonResponse } from "@/__tests__/helpers/api-test-u
 
 vi.mock("@/lib/prisma", () => ({ prisma: {} }));
 
+const mockSearchPlaceText = vi.fn();
 vi.mock("@/lib/amap", () => ({
-  requireAmapApiKey: vi.fn().mockReturnValue("test-key"),
+  searchPlaceText: (...args: unknown[]) => mockSearchPlaceText(...args),
 }));
 
-const mockFetch = vi.fn();
-vi.stubGlobal("fetch", mockFetch);
-
 import { GET } from "./route";
 
 const mockCtx = { params: Promise.resolve({}) };
@@ -20,21 +18,17 @@ beforeEach(() => {
 
 describe("GET /api/location/search", () => {
   it("returns search results", async () => {
-    mockFetch.mockResolvedValue({
-      json: () =>
-        Promise.resolve({
-          status: "1",
-          pois: [
-            {
-              id: "poi-1",
-              name: "星巴克",
-              address: "南京路1号",
-              location: "121.4,31.2",
-              business: { rating: "4.5", cost: "40" },
-            },
-          ],
-        }),
-    });
+    mockSearchPlaceText.mockResolvedValue([
+      {
+        id: "poi-1",
+        name: "星巴克",
+        address: "南京路1号",
+        lat: 31.2,
+        lng: 121.4,
+        rating: 4.5,
+        cost: 40,
+      },
+    ]);
 
     const req = createRequest("/api/location/search?keywords=星巴克");
     const res = await GET(req, mockCtx);
@@ -48,9 +42,7 @@ describe("GET /api/location/search", () => {
   });
 
   it("returns empty when no results", async () => {
-    mockFetch.mockResolvedValue({
-      json: () => Promise.resolve({ status: "1", pois: [] }),
-    });
+    mockSearchPlaceText.mockResolvedValue([]);
 
     const req = createRequest("/api/location/search?keywords=不存在的地方");
     const res = await GET(req, mockCtx);
@@ -65,7 +57,8 @@ describe("GET /api/location/search", () => {
   });
 
   it("returns 503 when API unavailable", async () => {
-    mockFetch.mockRejectedValue(new Error("network error"));
+    const { ApiError } = await import("@/lib/api");
+    mockSearchPlaceText.mockRejectedValue(new ApiError("位置服务暂时不可用，请稍后重试", 503));
 
     const req = createRequest("/api/location/search?keywords=test");
     const res = await GET(req, mockCtx);