feat: add password change, trial subscription, batch import, UX improvements

Server:
- POST /api/v1/admin/password: admin password change with bcrypt migration
- POST /api/v1/subscription/trial: user trial activation, one per user
- POST /api/v1/admin/devices/batch: bulk device import (up to 500)
- Add trial plan (7 days, free) to PLANS constant

Admin console:
- Settings page: add password change form with validation
- Device page: add batch import modal with textarea input

Miniprogram:
- Treating page: add back button with stop-treatment confirmation
- Index page: add mock device bind button (dev mode only)

admin-console/src/pages/device/index.vue

@@ -11,6 +11,7 @@
         />
         <button class="btn-primary btn-sm" @click="onSearch">搜索</button>
         <button class="btn-primary btn-sm" @click="onCreateDevice">预生成产品码</button>
+        <button class="btn-default btn-sm" @click="showBatchImport = true">批量导入</button>
         <button class="btn-default btn-sm" @click="onExport">导出</button>
       </view>
     </view>
@@ -55,6 +56,21 @@
         <text class="page-info">共 {{ totalPages }} 页</text>
       </view>
     </view>
+
+    <view class="modal-mask" v-if="showBatchImport" @click="showBatchImport = false">
+      <view class="modal-content" @click.stop>
+        <view class="modal-title">批量导入设备</view>
+        <view class="form-group">
+          <text class="form-label">设备编号（每行一个）</text>
+          <textarea class="form-textarea" v-model="batchDeviceIds" placeholder="输入设备编号，每行一个&#10;例如：&#10;HOX001&#10;HOX002&#10;HOX003" :maxlength="-1"></textarea>
+        </view>
+        <view class="batch-hint">最多 500 个设备</view>
+        <view class="modal-actions">
+          <button class="btn-default" @click="showBatchImport = false">取消</button>
+          <button class="btn-primary" @click="onBatchImport" :loading="batchImporting">导入</button>
+        </view>
+      </view>
+    </view>
   </AdminLayout>
 </template>
 
@@ -73,7 +89,10 @@ export default {
       page: 1,
       pageSize: 20,
       keyword: '',
-      statusMap: { 1: '未激活', 2: '在线', 3: '离线', 4: '故障' }
+      statusMap: { 1: '未激活', 2: '在线', 3: '离线', 4: '故障' },
+      showBatchImport: false,
+      batchDeviceIds: '',
+      batchImporting: false
     }
   },
   computed: {
@@ -146,6 +165,29 @@ export default {
       return map[status] || 'badge badge-default'
     },
     formatDate: formatDateShort,
+    async onBatchImport() {
+      const ids = this.batchDeviceIds.split('\n').map(s => s.trim()).filter(Boolean)
+      if (ids.length === 0) {
+        uni.showToast({ title: '请输入设备编号', icon: 'none' })
+        return
+      }
+      if (ids.length > 500) {
+        uni.showToast({ title: '最多 500 个', icon: 'none' })
+        return
+      }
+      this.batchImporting = true
+      try {
+        const result = await post('/api/v1/admin/devices/batch', { device_ids: ids })
+        uni.showToast({ title: '导入 ' + result.created + ' 个设备', icon: 'success' })
+        this.showBatchImport = false
+        this.batchDeviceIds = ''
+        this.loadDevices()
+      } catch (e) {
+        uni.showToast({ title: '导入失败', icon: 'none' })
+      } finally {
+        this.batchImporting = false
+      }
+    },
     async onExport() {
       try {
         const data = await get('/api/v1/admin/devices', { page: 1, page_size: 9999, keyword: this.keyword })
@@ -171,4 +213,61 @@ export default {
 .pagination {
   justify-content: flex-end;
 }
+
+.modal-mask {
+  position: fixed;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background: rgba(0,0,0,0.45);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.modal-content {
+  width: 480px;
+  background: #fff;
+  border-radius: 8px;
+  padding: 24px;
+}
+
+.modal-title {
+  font-size: 18px;
+  font-weight: 600;
+  margin-bottom: 20px;
+}
+
+.form-group {
+  margin-bottom: 16px;
+}
+
+.form-label {
+  display: block;
+  font-size: 14px;
+  color: #333;
+  margin-bottom: 6px;
+}
+
+.form-textarea {
+  width: 100%;
+  height: 160px;
+  border: 1px solid #d9d9d9;
+  border-radius: 6px;
+  padding: 12px;
+  font-size: 14px;
+  box-sizing: border-box;
+  resize: vertical;
+}
+
+.batch-hint {
+  font-size: 12px;
+  color: #999;
+  margin-bottom: 16px;
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+}
 </style>

admin-console/src/pages/settings/index.vue

@@ -1,6 +1,28 @@
 <template>
   <AdminLayout currentPage="/pages/settings/index">
     <view class="page-card">
+      <view class="section-card">
+        <view class="section-title">修改密码</view>
+        <view class="form-grid">
+          <view class="form-row">
+            <text class="form-label">当前密码</text>
+            <input class="form-input" v-model="passwordForm.old_password" type="password" placeholder="请输入当前密码" />
+          </view>
+          <view class="form-row">
+            <text class="form-label">新密码</text>
+            <input class="form-input" v-model="passwordForm.new_password" type="password" placeholder="请输入新密码（≥6位）" />
+          </view>
+          <view class="form-row">
+            <text class="form-label">确认新密码</text>
+            <input class="form-input" v-model="passwordForm.confirm_password" type="password" placeholder="请再次输入新密码" />
+          </view>
+          <view class="form-row">
+            <text class="form-label"></text>
+            <button class="btn-primary btn-sm" @click="onChangePassword">修改密码</button>
+          </view>
+        </view>
+      </view>
+
       <view class="section-card">
         <view class="section-title">基础配置</view>
         <view class="form-grid">
@@ -123,7 +145,8 @@ export default {
         enable_free_mode: true,
         maintenance_mode: false
       },
-      timezoneOptions: ['Asia/Shanghai', 'Asia/Tokyo', 'America/New_York', 'Europe/London']
+      timezoneOptions: ['Asia/Shanghai', 'Asia/Tokyo', 'America/New_York', 'Europe/London'],
+      passwordForm: { old_password: '', new_password: '', confirm_password: '' }
     }
   },
   onShow() {
@@ -153,6 +176,30 @@ export default {
     },
     onTimezoneChange(e) {
       this.settings.timezone = this.timezoneOptions[e.detail.value]
+    },
+    async onChangePassword() {
+      if (!this.passwordForm.old_password || !this.passwordForm.new_password) {
+        uni.showToast({ title: '请填写完整', icon: 'none' })
+        return
+      }
+      if (this.passwordForm.new_password.length < 6) {
+        uni.showToast({ title: '新密码至少6位', icon: 'none' })
+        return
+      }
+      if (this.passwordForm.new_password !== this.passwordForm.confirm_password) {
+        uni.showToast({ title: '两次密码不一致', icon: 'none' })
+        return
+      }
+      try {
+        await post('/api/v1/admin/password', {
+          old_password: this.passwordForm.old_password,
+          new_password: this.passwordForm.new_password
+        })
+        uni.showToast({ title: '密码修改成功', icon: 'success' })
+        this.passwordForm = { old_password: '', new_password: '', confirm_password: '' }
+      } catch (e) {
+        uni.showToast({ title: e.message || '修改失败', icon: 'none' })
+      }
     }
   }
 }
@@ -338,4 +385,11 @@ export default {
   line-height: 36px;
   cursor: pointer;
 }
+
+.btn-sm {
+  height: 32px;
+  padding: 0 16px;
+  font-size: 14px;
+  line-height: 32px;
+}
 </style>