feat(M03-C): 完成地图选店与距离排序

backend/tests/store-discovery.test.mjs

@@ -0,0 +1,72 @@
+import assert from 'node:assert/strict';
+import { buildApp } from '../dist/app.js';
+import {
+  haversineMeters,
+  StoreDiscoveryRepository
+} from '../dist/stores/store-discovery-repository.js';
+
+assert.ok(haversineMeters(31.2304, 121.4737, 31.2304, 121.4737) < 1);
+assert.ok(haversineMeters(31.2304, 121.4737, 31.2200, 121.4800) > 1000);
+
+const rows = [
+  {
+    id: 11, name: '近店', address: 'A', city: '上海市', district: '黄浦区',
+    longitude: '121.4737', latitude: '31.2304', contactPhone: '',
+    timezone: 'Asia/Shanghai', businessStatus: 'OPEN',
+    weekday: 4, openMinute: 0, closeMinute: 0, isClosed: 0, sortOrder: 1
+  },
+  {
+    id: 12, name: '远店', address: 'B', city: '上海市', district: '浦东新区',
+    longitude: '121.6000', latitude: '31.3000', contactPhone: '',
+    timezone: 'Asia/Shanghai', businessStatus: 'OPEN',
+    weekday: 4, openMinute: 0, closeMinute: 0, isClosed: 0, sortOrder: 2
+  }
+];
+const repository = new StoreDiscoveryRepository({
+  async execute(sql, params) {
+    assert.match(sql, /s\.tenant_id = \?/);
+    assert.deepEqual(params, ['7', '上海市']);
+    return [rows, []];
+  }
+});
+const stores = await repository.findStores({
+  tenantId: '7', city: '上海市', latitude: 31.2304, longitude: 121.4737,
+  now: new Date('2026-06-18T04:00:00.000Z')
+});
+assert.deepEqual(stores.map((store) => store.id), ['11', '12']);
+assert.equal(stores[0].distanceMeters, 0);
+assert.equal(stores[0].openNow, true);
+
+const app = await buildApp({
+  storeDiscovery: {
+    tenancy: {
+      async resolveLoginContext(appId, tenantId) {
+        assert.equal(appId, 'wx-test-app');
+        assert.equal(tenantId, '7');
+        return { tenantId: '7', platformAppId: '9', appId };
+      }
+    },
+    repository: {
+      async findStores(query) {
+        assert.equal(query.city, '上海市');
+        return stores;
+      }
+    }
+  }
+});
+const response = await app.inject({
+  method: 'GET',
+  url: '/app-api/stores?city=%E4%B8%8A%E6%B5%B7%E5%B8%82',
+  headers: { 'x-wechat-appid': 'wx-test-app', 'tenant-id': '7' }
+});
+assert.equal(response.statusCode, 200);
+assert.equal(response.json().data[0].id, '11');
+const invalid = await app.inject({
+  method: 'GET',
+  url: '/app-api/stores?latitude=31.2',
+  headers: { 'x-wechat-appid': 'wx-test-app', 'tenant-id': '7' }
+});
+assert.equal(invalid.statusCode, 400);
+await app.close();
+
+console.log('PASS: M03-C trusted distance sorting, city fallback and public store discovery are present.');