feat: production readiness — feature gaps + config hardening

Miniprogram:
- Add BLE reconnect button on home page when disconnected
- Add loading states to index, profile, subscribe-plans pages
- Add profile editing (avatar + nickname) with COS upload
- Enable pull-to-refresh on history page
- Fix auto-scan self.options → self.data inconsistency
- Add console.error to silent catch blocks
- Gate 'Simple Peripheral' BLE scan behind __DEV__ flag
- Add production config comment to env.js

Admin console:
- Add empty state '暂无数据' to all 5 list views
- Replace plain text plan input with select dropdown
- Add type="date" to record date filters
- Add production config comment

Server:
- CORS origin restricted in production (env CORS_ORIGIN)
- DB pool size configurable via DB_POOL_SIZE env var
- .env.example updated with WeChat Pay + production fields

admin-console/src/config/env.js

@@ -1,3 +1,4 @@
+// Production: change to 'prod'
 const ENV = 'test'
 
 const API_BASES = {

admin-console/src/styles/common.css

@@ -211,3 +211,10 @@
   box-sizing: border-box;
   resize: vertical;
 }
+
+.empty-state {
+  text-align: center;
+  padding: 40px 0;
+  color: #999;
+  font-size: 14px;
+}

admin-console/src/views/DeviceListView.vue

@@ -42,6 +42,8 @@
       </template>
     </DataTable>
 
+    <view class="empty-state" v-if="records.length === 0">暂无数据</view>
+
     <ConfirmModal
       :visible="showBatchImport"
       title="批量导入设备"

admin-console/src/views/LogView.vue

@@ -28,6 +28,8 @@
         </view>
       </view>
 
+      <view class="empty-state" v-if="logs.length === 0">暂无数据</view>
+
       <view class="pagination">
         <button class="btn-page" :disabled="page <= 1" @click="onPage(page - 1)">‹</button>
         <button class="btn-page active">{{ page }}</button>

admin-console/src/views/RecordView.vue

@@ -6,9 +6,9 @@
           <text class="filter-tag-text">用户: {{ filterUserId }}</text>
           <text class="filter-tag-close" @click="clearUserFilter">x</text>
         </view>
-        <input class="search-input date-input" v-model="dateFrom" placeholder="开始日期" />
+        <input type="date" class="search-input date-input" v-model="dateFrom" placeholder="开始日期" />
         <text class="date-sep">~</text>
-        <input class="search-input date-input" v-model="dateTo" placeholder="结束日期" />
+        <input type="date" class="search-input date-input" v-model="dateTo" placeholder="结束日期" />
         <input
           class="search-input"
           v-model="keyword"
@@ -55,6 +55,8 @@
         </view>
       </view>
 
+      <view class="empty-state" v-if="records.length === 0">暂无数据</view>
+
       <view class="pagination">
         <button class="btn-page" :disabled="page <= 1" @click="onPage(page - 1)">‹</button>
         <button class="btn-page active">{{ page }}</button>

admin-console/src/views/SubscriptionView.vue

@@ -65,6 +65,8 @@
       </template>
     </DataTable>
 
+    <view class="empty-state" v-if="records.length === 0">暂无数据</view>
+
     <ConfirmModal
       :visible="showCreate"
       title="创建订阅"
@@ -79,7 +81,10 @@
       </view>
       <view class="form-group">
         <text class="form-label">方案</text>
-        <input class="form-input" v-model="createForm.plan" placeholder="monthly/quarterly/yearly" />
+        <select v-model="createForm.plan" class="form-input">
+          <option value="monthly">月卡 (30天)</option>
+          <option value="yearly">年卡 (365天)</option>
+        </select>
       </view>
       <view class="form-group">
         <text class="form-label">天数</text>

admin-console/src/views/UserListView.vue

@@ -54,6 +54,8 @@
         </view>
       </view>
 
+      <view class="empty-state" v-if="users.length === 0">暂无数据</view>
+
       <view class="pagination">
         <button class="btn-page" :disabled="page <= 1" @click="onPage(page - 1)">‹</button>
         <button class="btn-page active">{{ page }}</button>