diff --git a/admin/src/views/Notifications.vue b/admin/src/views/Notifications.vue
index bdf800d..e2985d7 100644
--- a/admin/src/views/Notifications.vue
+++ b/admin/src/views/Notifications.vue
@@ -1,47 +1,85 @@
 <template>
-  <div>
-    <h3 style="margin: 0 0 16px;">发布系统通知</h3>
+  <div class="notifications-page">
+    <el-tabs v-model="activeTab">
+      <!-- 发布通知 -->
+      <el-tab-pane label="发布通知" name="publish">
+        <el-form ref="formRef" :model="form" :rules="rules" label-width="100px" style="max-width: 700px;">
+          <el-form-item label="通知标题" prop="title">
+            <el-input v-model="form.title" placeholder="请输入通知标题" />
+          </el-form-item>
+          <el-form-item label="通知正文" prop="content">
+            <el-input v-model="form.content" type="textarea" :rows="8" placeholder="支持富文本内容" />
+          </el-form-item>
+          <el-form-item label="缩略图">
+            <el-input v-model="form.thumbnailUrl" placeholder="缩略图地址（选填）" />
+            <el-upload action="/api/upload/image" :headers="uploadHeaders" :show-file-list="false"
+              :on-success="(res) => form.thumbnailUrl = res.url" accept="image/*" style="margin-top: 8px;">
+              <el-button size="small">上传图片</el-button>
+            </el-upload>
+          </el-form-item>
+          <el-form-item label="目标用户" prop="targetType">
+            <el-select v-model="form.targetType" style="width: 100%;">
+              <el-option label="全部用户" value="All" />
+              <el-option label="下单用户" value="OrderUser" />
+              <el-option label="跑腿用户" value="RunnerUser" />
+              <el-option label="指定用户" value="Specific" />
+            </el-select>
+          </el-form-item>
+          <el-form-item v-if="form.targetType === 'Specific'" label="用户ID列表">
+            <el-input v-model="targetUserIdsText" placeholder="多个用户ID用逗号分隔，如：1,2,3" />
+          </el-form-item>
+          <el-form-item>
+            <el-button type="primary" :loading="submitting" @click="handleSubmit">发布通知</el-button>
+          </el-form-item>
+        </el-form>
+      </el-tab-pane>
 
-    <el-form ref="formRef" :model="form" :rules="rules" label-width="100px" style="max-width: 700px;">
-      <el-form-item label="通知标题" prop="title">
-        <el-input v-model="form.title" placeholder="请输入通知标题" />
-      </el-form-item>
-      <el-form-item label="通知正文" prop="content">
-        <el-input v-model="form.content" type="textarea" :rows="8" placeholder="支持富文本内容" />
-      </el-form-item>
-      <el-form-item label="缩略图">
-        <el-input v-model="form.thumbnailUrl" placeholder="缩略图地址（选填）" />
-        <el-upload action="/api/upload/image" :headers="uploadHeaders" :show-file-list="false"
-          :on-success="(res) => form.thumbnailUrl = res.url" accept="image/*" style="margin-top: 8px;">
-          <el-button size="small">上传图片</el-button>
-        </el-upload>
-      </el-form-item>
-      <el-form-item label="目标用户" prop="targetType">
-        <el-select v-model="form.targetType" style="width: 100%;">
-          <el-option label="全部用户" value="All" />
-          <el-option label="下单用户" value="OrderUser" />
-          <el-option label="跑腿用户" value="RunnerUser" />
-          <el-option label="指定用户" value="Specific" />
-        </el-select>
-      </el-form-item>
-      <el-form-item v-if="form.targetType === 'Specific'" label="用户ID列表">
-        <el-input v-model="targetUserIdsText" placeholder="多个用户ID用逗号分隔，如：1,2,3" />
-      </el-form-item>
-      <el-form-item>
-        <el-button type="primary" :loading="submitting" @click="handleSubmit">发布通知</el-button>
-      </el-form-item>
-    </el-form>
+      <!-- 已发送通知 -->
+      <el-tab-pane label="已发送" name="list">
+        <el-table :data="notifyList" v-loading="listLoading" stripe>
+          <el-table-column prop="id" label="ID" width="60" align="center" />
+          <el-table-column prop="title" label="标题" min-width="180" show-overflow-tooltip />
+          <el-table-column prop="contentPreview" label="内容预览" min-width="200" show-overflow-tooltip />
+          <el-table-column label="目标" width="100" align="center">
+            <template #default="{ row }">
+              <el-tag size="small" :type="targetTagType(row.targetType)">{{ targetLabel(row.targetType) }}</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column label="缩略图" width="80" align="center">
+            <template #default="{ row }">
+              <el-image v-if="row.thumbnailUrl" :src="row.thumbnailUrl" style="width: 40px; height: 40px;" fit="cover" :preview-src-list="[row.thumbnailUrl]" />
+              <span v-else style="color: #ccc;">-</span>
+            </template>
+          </el-table-column>
+          <el-table-column label="发布时间" width="170">
+            <template #default="{ row }">{{ formatTime(row.createdAt) }}</template>
+          </el-table-column>
+          <el-table-column label="操作" width="80" fixed="right" align="center">
+            <template #default="{ row }">
+              <el-popconfirm title="删除后用户端也会同步删除，确定？" @confirm="deleteNotify(row)">
+                <template #reference>
+                  <el-button size="small" type="danger" plain>删除</el-button>
+                </template>
+              </el-popconfirm>
+            </template>
+          </el-table-column>
+        </el-table>
+      </el-tab-pane>
+    </el-tabs>
   </div>
 </template>
 
 <script setup>
-import { ref, reactive } from 'vue'
+import { ref, reactive, onMounted } from 'vue'
 import { ElMessage } from 'element-plus'
 import request from '../utils/request'
 
+const activeTab = ref('publish')
 const submitting = ref(false)
 const formRef = ref(null)
 const targetUserIdsText = ref('')
+const listLoading = ref(false)
+const notifyList = ref([])
 
 const uploadHeaders = { Authorization: `Bearer ${localStorage.getItem('admin_token')}` }
 
@@ -58,10 +96,13 @@ const rules = {
   targetType: [{ required: true, message: '请选择目标用户', trigger: 'change' }]
 }
 
+const targetLabel = (t) => ({ All: '全部', OrderUser: '下单用户', RunnerUser: '跑腿用户', Specific: '指定用户' }[t] || t)
+const targetTagType = (t) => ({ All: '', OrderUser: 'success', RunnerUser: 'warning', Specific: 'info' }[t] || '')
+const formatTime = (t) => t ? new Date(t).toLocaleString('zh-CN') : ''
+
 async function handleSubmit() {
   const valid = await formRef.value.validate().catch(() => false)
   if (!valid) return
-
   const data = { ...form }
   if (data.targetType === 'Specific') {
     data.targetUserIds = targetUserIdsText.value.split(',').map(s => parseInt(s.trim())).filter(n => !isNaN(n))
@@ -70,16 +111,38 @@ async function handleSubmit() {
       return
     }
   }
-
   submitting.value = true
   try {
     await request.post('/admin/notifications', data)
     ElMessage.success('发布成功')
-    // 重置表单
     formRef.value.resetFields()
     targetUserIdsText.value = ''
+    fetchList()
   } finally {
     submitting.value = false
   }
 }
+
+async function fetchList() {
+  listLoading.value = true
+  try {
+    notifyList.value = await request.get('/admin/notifications')
+  } finally {
+    listLoading.value = false
+  }
+}
+
+async function deleteNotify(row) {
+  await request.delete(`/admin/notifications/${row.id}`)
+  ElMessage.success('已删除')
+  fetchList()
+}
+
+onMounted(fetchList)
 </script>
+
+<style scoped>
+.notifications-page {
+  max-width: 900px;
+}
+</style>
diff --git a/admin/src/views/Runners.vue b/admin/src/views/Runners.vue
index 1f47e12..3a38dea 100644
--- a/admin/src/views/Runners.vue
+++ b/admin/src/views/Runners.vue
@@ -2,10 +2,16 @@
   <div class="runners-page">
     <div class="page-header">
       <h2>跑腿管理</h2>
-      <el-tag type="info" size="large">共 {{ list.length }} 名跑腿</el-tag>
+      <div class="header-actions">
+        <el-input v-model="searchUid" placeholder="输入UID搜索" clearable style="width: 200px;"
+          @clear="searchUid = ''" @keyup.enter="searchUid = searchUid.trim()">
+          <template #prefix><el-icon><Search /></el-icon></template>
+        </el-input>
+        <el-tag type="info" size="large">共 {{ filteredList.length }} 名跑腿</el-tag>
+      </div>
     </div>
 
-    <el-table :data="list" v-loading="loading" stripe style="width: 100%">
+    <el-table :data="filteredList" v-loading="loading" stripe style="width: 100%">
       <el-table-column prop="id" label="ID" width="80" align="center" />
       <el-table-column prop="nickname" label="昵称" min-width="120" show-overflow-tooltip />
       <el-table-column prop="phone" label="手机号" min-width="130" />
@@ -25,10 +31,9 @@
       </el-table-column>
       <el-table-column label="评价星级" width="120" align="center">
         <template #default="{ row }">
-          <span v-if="row.reviewCount > 0" style="color: #ff9900; font-weight: bold;">
-            ★ {{ row.avgRating }}
+          <span style="color: #ff9900; font-weight: bold;">
+            ★ {{ row.starRating }}
           </span>
-          <span v-else style="color: #ccc;">暂无</span>
         </template>
       </el-table-column>
       <el-table-column label="被评价" width="100" align="center">
@@ -107,12 +112,19 @@
 </template>
 
 <script setup>
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { ElMessage } from 'element-plus'
+import { Search } from '@element-plus/icons-vue'
 import request from '../utils/request'
 
 const loading = ref(false)
 const list = ref([])
+const searchUid = ref('')
+
+const filteredList = computed(() => {
+  if (!searchUid.value) return list.value
+  return list.value.filter(r => String(r.id).includes(searchUid.value.trim()))
+})
 const reviewDialogVisible = ref(false)
 const reviewLoading = ref(false)
 const reviews = ref([])
@@ -177,6 +189,11 @@ onMounted(fetchList)
   margin: 0;
   font-size: 20px;
 }
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+}
 .score-cell {
   display: flex;
   align-items: center;
diff --git a/miniapp/package-lock.json b/miniapp/package-lock.json
index 12cfbcf..7afd7a5 100644
--- a/miniapp/package-lock.json
+++ b/miniapp/package-lock.json
@@ -10,7 +10,8 @@
       "license": "ISC",
       "dependencies": {
         "@tencentcloud/chat": "^3.6.6",
-        "pinia": "^3.0.4"
+        "pinia": "^3.0.4",
+        "tim-upload-plugin": "^1.4.3"
       },
       "devDependencies": {
         "fast-check": "^4.5.3",
@@ -1599,6 +1600,12 @@
         "node": ">=16"
       }
     },
+    "node_modules/tim-upload-plugin": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/tim-upload-plugin/-/tim-upload-plugin-1.4.3.tgz",
+      "integrity": "sha512-3ZmbA36dr3eG9YGDon9MLBUtbNawYWkL+TBa+VS0Uviguc7PlVSOIVRG2C4irXX16slDT2Kj+HAZapp+Xqp2xg==",
+      "license": "ISC"
+    },
     "node_modules/tinybench": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
diff --git a/miniapp/package.json b/miniapp/package.json
index ca92f76..b7670bd 100644
--- a/miniapp/package.json
+++ b/miniapp/package.json
@@ -12,7 +12,8 @@
   "type": "commonjs",
   "dependencies": {
     "@tencentcloud/chat": "^3.6.6",
-    "pinia": "^3.0.4"
+    "pinia": "^3.0.4",
+    "tim-upload-plugin": "^1.4.3"
   },
   "devDependencies": {
     "fast-check": "^4.5.3",
diff --git a/miniapp/pages/delivery/delivery.vue b/miniapp/pages/delivery/delivery.vue
index 366e767..6c68520 100644
--- a/miniapp/pages/delivery/delivery.vue
+++ b/miniapp/pages/delivery/delivery.vue
@@ -79,7 +79,7 @@
 </template>
 
 <script>
-import { createOrder, getPageBanner, getMinCommission } from '../../utils/api'
+import { createOrder, getPageBanner, getMinCommission, cancelOrder, confirmPayment } from '../../utils/api'
 
 export default {
 	data() {
@@ -139,8 +139,8 @@ export default {
 			if (isNaN(num) || num < this.minCommission) {
 				uni.showToast({ title: `跑腿佣金不可低于${this.minCommission}元`, icon: 'none' }); return false
 			}
-			if (val.includes('.') && val.split('.')[1].length > 1) {
-				uni.showToast({ title: '佣金最多支持小数点后1位', icon: 'none' }); return false
+			if (val.includes('.') && val.split('.')[1].length > 2) {
+				uni.showToast({ title: '佣金最多支持小数点后2位', icon: 'none' }); return false
 			}
 			return true
 		},
@@ -184,7 +184,17 @@ export default {
 					commission,
 					totalAmount: commission
 				})
-				if (result.paymentParams) await this.wxPay(result.paymentParams)
+				if (result.paymentParams) {
+					try {
+						await this.wxPay(result.paymentParams)
+						// 支付成功，确认订单上架
+						try { await confirmPayment(result.id) } catch (ex) {}
+					} catch (e) {
+						// 支付失败/取消，撤销订单
+						try { await cancelOrder(result.id) } catch (ex) {}
+						return
+					}
+				}
 				uni.showToast({ title: '下单成功', icon: 'success' })
 				setTimeout(() => { uni.navigateBack() }, 1500)
 			} catch (e) {} finally { this.submitting = false }
diff --git a/miniapp/pages/food/food-order.vue b/miniapp/pages/food/food-order.vue
index 6216af7..779db5b 100644
--- a/miniapp/pages/food/food-order.vue
+++ b/miniapp/pages/food/food-order.vue
@@ -68,7 +68,7 @@
 </template>
 
 <script>
-import { createOrder, getMinCommission } from '../../utils/api'
+import { createOrder, getMinCommission, cancelOrder, confirmPayment } from '../../utils/api'
 import { useCartStore } from '../../stores/cart'
 
 export default {
@@ -133,8 +133,8 @@ export default {
 				uni.showToast({ title: `跑腿佣金不可低于${this.minCommission}元`, icon: 'none' })
 				return false
 			}
-			if (val.includes('.') && val.split('.')[1].length > 1) {
-				uni.showToast({ title: '佣金最多支持小数点后1位', icon: 'none' })
+			if (val.includes('.') && val.split('.')[1].length > 2) {
+				uni.showToast({ title: '佣金最多支持小数点后2位', icon: 'none' })
 				return false
 			}
 			return true
@@ -161,6 +161,13 @@ export default {
 		async onSubmit() {
 			if (!this.validateForm()) return
 
+			// 未登录跳转登录页
+			const token = uni.getStorageSync('token')
+			if (!token) {
+				uni.navigateTo({ url: '/pages/login/login' })
+				return
+			}
+
 			this.submitting = true
 			try {
 				const commission = parseFloat(this.form.commission)
@@ -183,7 +190,15 @@ export default {
 				const result = await createOrder(orderData)
 
 				if (result.paymentParams) {
-					await this.wxPay(result.paymentParams)
+					try {
+						await this.wxPay(result.paymentParams)
+						// 支付成功，确认订单上架
+						try { await confirmPayment(result.id) } catch (ex) {}
+					} catch (e) {
+						// 支付失败/取消，撤销订单
+						try { await cancelOrder(result.id) } catch (ex) {}
+						return
+					}
 				}
 
 				// 下单成功，清空购物车
diff --git a/miniapp/pages/help/help.vue b/miniapp/pages/help/help.vue
index 77575a7..c9d1c05 100644
--- a/miniapp/pages/help/help.vue
+++ b/miniapp/pages/help/help.vue
@@ -71,7 +71,9 @@
 	import {
 		createOrder,
 		getPageBanner,
-		getMinCommission
+		getMinCommission,
+		cancelOrder,
+		confirmPayment
 	} from '../../utils/api'
 
 	export default {
@@ -149,9 +151,9 @@
 					})
 					return false
 				}
-				if (val.includes('.') && val.split('.')[1].length > 1) {
+				if (val.includes('.') && val.split('.')[1].length > 2) {
 					uni.showToast({
-						title: '佣金最多支持小数点后1位',
+						title: '佣金最多支持小数点后2位',
 						icon: 'none'
 					})
 					return false
@@ -181,15 +183,11 @@
 					})
 					return false
 				}
-				if (!this.form.goodsAmount) {
-					uni.showToast({
-						title: '请输入商品总金额',
-						icon: 'none'
-					})
-					return false
+				if (!this.form.goodsAmount && this.form.goodsAmount !== '0') {
+					this.form.goodsAmount = '0'
 				}
 				const goodsNum = parseFloat(this.form.goodsAmount)
-				if (isNaN(goodsNum) || goodsNum <= 0) {
+				if (isNaN(goodsNum) || goodsNum < 0) {
 					uni.showToast({
 						title: '请输入正确的商品总金额',
 						icon: 'none'
@@ -226,7 +224,17 @@
 						commission,
 						totalAmount: goodsAmount + commission
 					})
-				if (result.paymentParams) await this.wxPay(result.paymentParams)
+				if (result.paymentParams) {
+					try {
+						await this.wxPay(result.paymentParams)
+						// 支付成功，确认订单上架
+						try { await confirmPayment(result.id) } catch (ex) {}
+					} catch (e) {
+						// 支付失败/取消，撤销订单
+						try { await cancelOrder(result.id) } catch (ex) {}
+						return
+					}
+				}
 				uni.showToast({
 					title: '下单成功',
 					icon: 'success'
diff --git a/miniapp/pages/index/index.vue b/miniapp/pages/index/index.vue
index 12102ce..85f042c 100644
--- a/miniapp/pages/index/index.vue
+++ b/miniapp/pages/index/index.vue
@@ -22,9 +22,6 @@
 		<view class="service-list">
 			<view class="service-card" v-for="entry in serviceEntries" :key="entry.id" @click="onServiceClick(entry)">
 				<image class="service-bg" :src="entry.iconUrl" mode="aspectFit"></image>
-				<view class="service-overlay">
-					<text class="service-name">{{ entry.name }}</text>
-				</view>
 			</view>
 		</view>
 	</view>
@@ -151,22 +148,4 @@
 		left: 0;
 	}
 
-	.service-overlay {
-		position: absolute;
-		top: 0;
-		left: 0;
-		width: 100%;
-		height: 100%;
-		display: flex;
-		align-items: center;
-		justify-content: center;
-	}
-
-	.service-name {
-		font-size: 48rpx;
-		font-weight: bold;
-		color: #363636;
-		text-shadow: 0 2rpx 8rpx rgba(0, 0, 0, 0.3);
-		letter-spacing: 8rpx;
-	}
 </style>
\ No newline at end of file
diff --git a/miniapp/pages/message/chat.vue b/miniapp/pages/message/chat.vue
index b01abae..09900d9 100644
--- a/miniapp/pages/message/chat.vue
+++ b/miniapp/pages/message/chat.vue
@@ -133,6 +133,9 @@
 			<view class="quick-btn" @click="onContactService">
 				<text>联系客服</text>
 			</view>
+			<view class="quick-btn btn-pay" v-if="pendingPayment" @click="retryPayment">
+				<text>补缴支付</text>
+			</view>
 		</view>
 
 		<!-- 底部输入区域 -->
@@ -239,7 +242,8 @@
 				priceChangeType: '',
 				newPriceInput: '',
 				submittingPriceChange: false,
-				statusBarHeight: 0
+				statusBarHeight: 0,
+				pendingPayment: null
 			}
 		},
 		computed: {
@@ -283,9 +287,8 @@
 			offNewMessage()
 		},
 		onShow() {
-			if (this.orderId && !this.orderInfo.id) {
-				this.loadOrderInfo()
-			} else if (this.orderId && this.lastOrderStatus) {
+			// 每次回到聊天页都检测订单状态变化
+			if (this.orderId) {
 				this.checkOrderStatusChange()
 			}
 		},
@@ -339,7 +342,20 @@
 								const formatted = formatIMMessage(msg, this.imUserId)
 								// 按订单ID过滤
 								if (this.orderId && formatted.orderId && String(formatted.orderId) !== String(this.orderId)) continue
-								this.chatMessages.push(formatted)
+								// 收到改价响应消息，更新对应改价卡片状态
+								if (formatted.type === 'price-change-response') {
+									const card = this.chatMessages.find(m => m.type === 'price-change' && m.priceChangeId === formatted.priceChangeId)
+									if (card) card.status = formatted.status
+									// 显示为系统提示
+									this.chatMessages.push({
+										id: formatted.id,
+										type: 'system',
+										content: `对方${formatted.action === 'Accepted' ? '同意' : '拒绝'}了${formatted.changeTypeLabel}改价`
+									})
+									if (formatted.action === 'Accepted') this.loadOrderInfo()
+								} else {
+									this.chatMessages.push(formatted)
+								}
 							}
 						}
 						this.scrollToBottom()
@@ -360,9 +376,20 @@
 					const res = await getMessageList(this.targetImUserId, this.nextReqMessageID)
 					const allFormatted = res.messageList.map(m => formatIMMessage(m, this.imUserId))
 					// 按订单ID过滤：只显示当前订单的消息，或没有orderId的旧消息
-					const formatted = this.orderId
+					const filtered = this.orderId
 						? allFormatted.filter(m => !m.orderId || String(m.orderId) === String(this.orderId))
 						: allFormatted
+					// 处理历史消息中的改价响应，更新对应改价卡片状态
+					const formatted = []
+					for (const m of filtered) {
+						if (m.type === 'price-change-response') {
+							const card = filtered.find(c => c.type === 'price-change' && c.priceChangeId === m.priceChangeId)
+							if (card) card.status = m.status
+							formatted.push({ id: m.id, type: 'system', content: `${m.isSelf ? '您' : '对方'}${m.action === 'Accepted' ? '同意' : '拒绝'}了${m.changeTypeLabel}改价` })
+						} else {
+							formatted.push(m)
+						}
+					}
 					this.chatMessages = [...formatted, ...this.chatMessages]
 					this.nextReqMessageID = res.nextReqMessageID
 					this.historyCompleted = res.isCompleted
@@ -422,7 +449,7 @@
 					sourceType: ['album', 'camera'],
 					success: async (res) => {
 						try {
-							const msg = await sendImageMessage(this.targetImUserId, res.tempFilePaths[0], this.orderId)
+							const msg = await sendImageMessage(this.targetImUserId, res, this.orderId)
 							this.chatMessages.push(formatIMMessage(msg, this.imUserId))
 							this.scrollToBottom()
 						} catch (e) {
@@ -435,17 +462,28 @@
 				})
 			},
 			onChangeCommission() {
-				this.showMorePanel = false;
+				this.showMorePanel = false
+				if (this.hasPendingPriceChange()) return
 				this.priceChangeType = 'Commission'
-				this.newPriceInput = '';
+				this.newPriceInput = ''
 				this.showPriceChangePopup = true
 			},
 			onChangeGoodsPrice() {
-				this.showMorePanel = false;
+				this.showMorePanel = false
+				if (this.hasPendingPriceChange()) return
 				this.priceChangeType = 'GoodsAmount'
-				this.newPriceInput = '';
+				this.newPriceInput = ''
 				this.showPriceChangePopup = true
 			},
+			/** 检查是否有待处理的改价申请 */
+			hasPendingPriceChange() {
+				const pending = this.chatMessages.find(m => m.type === 'price-change' && m.status === 'Pending')
+				if (pending) {
+					uni.showToast({ title: '已有等待处理的改价申请，无法同时申请', icon: 'none' })
+					return true
+				}
+				return false
+			},
 			async submitPriceChange() {
 				const newPrice = parseFloat(this.newPriceInput)
 				if (isNaN(newPrice) || newPrice < 0) {
@@ -529,12 +567,47 @@
 						type: 'system',
 						content: `您已${actionLabel}${changeTypeLabel}改价`
 					})
-					if (action === 'Accepted' && res.difference !== 0) {
-						if (res.difference < 0) this.chatMessages.push({
-							id: `sys_r_${Date.now()}`,
-							type: 'system',
-							content: `已退还您${Math.abs(res.difference).toFixed(2)}元`
-						})
+
+					// 通过 IM 通知对方改价结果
+					if (this.imReady) {
+						await sendCustomMessage(this.targetImUserId, {
+							bizType: 'price-change-response',
+							priceChangeId: priceChangeId,
+							action: action,
+							status: res.status,
+							changeTypeLabel,
+							description: `${actionLabel}了${changeTypeLabel}改价申请`
+						}, this.orderId)
+					}
+
+					if (action === 'Accepted') {
+						// 需要补价：拉起支付
+						if (res.paymentParams) {
+							try {
+								await this.wxPay(res.paymentParams)
+								this.chatMessages.push({
+									id: `sys_pay_${Date.now()}`,
+									type: 'system',
+									content: `已补缴¥${res.difference.toFixed(2)}`
+								})
+							} catch (e) {
+								// 支付取消或失败，保存待支付信息供再次支付
+								this.pendingPayment = res.paymentParams
+								this.chatMessages.push({
+									id: `sys_pay_${Date.now()}`,
+									type: 'system',
+									content: `需补缴¥${res.difference.toFixed(2)}，点击下方"补缴支付"完成支付`
+								})
+							}
+						}
+						// 需要退款：后端已自动退款
+						if (res.difference < 0) {
+							this.chatMessages.push({
+								id: `sys_r_${Date.now()}`,
+								type: 'system',
+								content: res.refundSuccess ? `已退还您¥${Math.abs(res.difference).toFixed(2)}` : '退款处理中，请稍后查看'
+							})
+						}
 						await this.loadOrderInfo()
 					}
 					this.scrollToBottom()
@@ -553,11 +626,16 @@
 					return
 				}
 				const newStatus = this.orderInfo.status
-				if (!oldStatus || oldStatus === newStatus) return
+				// 首次加载只记录状态，不提示
+				if (!oldStatus) {
+					this.lastOrderStatus = newStatus
+					return
+				}
+				if (oldStatus === newStatus) return
 				this.lastOrderStatus = newStatus
 
 				const statusMessages = {
-					'InProgress→WaitConfirm': '跑腿已提交完成，等待单主确认',
+					'InProgress→WaitConfirm': '跑腿已提交完成，请在订单详情中确认',
 					'WaitConfirm→Completed': '单主已确认，订单已完成',
 					'WaitConfirm→InProgress': '单主已拒绝完成，订单继续进行'
 				}
@@ -565,24 +643,16 @@
 				const msg = statusMessages[key]
 				if (!msg) return
 
+				// 避免重复：检查最后一条系统消息是否相同
+				const lastMsg = [...this.chatMessages].reverse().find(m => m.type === 'system')
+				if (lastMsg && lastMsg.content === msg) return
+
 				this.chatMessages.push({
 					id: `sys_status_${Date.now()}`,
 					type: 'system',
 					content: msg
 				})
 				this.scrollToBottom()
-
-				if (this.imReady && this.targetImUserId) {
-					try {
-						await sendCustomMessage(this.targetImUserId, {
-							bizType: 'order-status',
-							action: key,
-							description: msg
-						}, this.orderId)
-					} catch (e) {
-						console.error('[聊天] 发送状态通知失败:', e)
-					}
-				}
 			},
 			onCompleteOrder() {
 				this.showMorePanel = false
@@ -591,6 +661,14 @@
 				})
 			},
 			goOrderDetail() {
+				const pages = getCurrentPages()
+				if (pages.length >= 2) {
+					const prevPage = pages[pages.length - 2]
+					if (prevPage.route === 'pages/order/order-detail') {
+						uni.navigateBack()
+						return
+					}
+				}
 				uni.navigateTo({
 					url: `/pages/order/order-detail?id=${this.orderId}`
 				})
@@ -614,6 +692,36 @@
 					url: '/pages/config/qrcode'
 				})
 			},
+			/** 微信支付 */
+			wxPay(params) {
+				return new Promise((resolve, reject) => {
+					uni.requestPayment({
+						provider: 'wxpay',
+						timeStamp: params.timeStamp,
+						nonceStr: params.nonceStr,
+						package: params.package_,
+						signType: params.signType,
+						paySign: params.paySign,
+						success: () => {
+							this.pendingPayment = null
+							resolve()
+						},
+						fail: (err) => {
+							if (err.errMsg !== 'requestPayment:fail cancel')
+								uni.showToast({ title: '支付失败', icon: 'none' })
+							reject(err)
+						}
+					})
+				})
+			},
+			/** 重新补缴支付 */
+			async retryPayment() {
+				if (!this.pendingPayment) return
+				try {
+					await this.wxPay(this.pendingPayment)
+					uni.showToast({ title: '补缴成功', icon: 'success' })
+				} catch (e) {}
+			},
 			previewImage(url) {
 				uni.previewImage({
 					urls: [url]
@@ -887,6 +995,15 @@
 		color: #333;
 	}
 
+	.btn-pay {
+		background: #FAD146;
+		border-color: #FAD146;
+	}
+
+	.btn-pay text {
+		color: #fff;
+	}
+
 	/* 底部输入区域 */
 	.chat-bottom {
 		background: #fff;
diff --git a/miniapp/pages/message/message.vue b/miniapp/pages/message/message.vue
index d2a0159..2cca73b 100644
--- a/miniapp/pages/message/message.vue
+++ b/miniapp/pages/message/message.vue
@@ -52,7 +52,12 @@
 			:key="item.orderId"
 			@click="goChat(item)"
 		>
-			<image class="chat-avatar" :src="item.targetAvatar || '/static/logo.png'" mode="aspectFill"></image>
+			<view class="avatar-wrap">
+				<image class="chat-avatar" :src="item.targetAvatar || '/static/logo.png'" mode="aspectFill"></image>
+				<view v-if="item.imUnread > 0" class="unread-badge">
+					<text>{{ item.imUnread > 99 ? '99+' : item.imUnread }}</text>
+				</view>
+			</view>
 			<view class="chat-info">
 				<view class="chat-top">
 					<text class="chat-name">{{ displayNickname(item) }}</text>
@@ -75,6 +80,7 @@
 
 <script>
 import { getUnreadCount, getChatOrderList } from '../../utils/api'
+import { getConversationList, initIM } from '../../utils/im'
 
 export default {
 	data() {
@@ -86,7 +92,8 @@ export default {
 				totalUnread: 0
 			},
 			// 聊天记录列表（腾讯 IM SDK 集成后从 SDK 获取）
-			chatList: []
+			chatList: [],
+			imUnreadTotal: 0
 		}
 	},
 	onShow() {
@@ -112,11 +119,29 @@ export default {
 			}
 		},
 
-		/** 加载聊天记录列表 */
+		/** 加载聊天记录列表（含IM未读数） */
 		async loadChatList() {
 			try {
 				const list = await getChatOrderList()
-				this.chatList = list || []
+				this.chatList = (list || []).map(item => ({ ...item, imUnread: 0 }))
+				// 从 IM 获取未读数
+				try {
+					await initIM()
+					const convList = await getConversationList()
+					const unreadMap = {}
+					convList.forEach(c => { unreadMap[c.targetUserId] = c.unreadCount || 0 })
+					let totalImUnread = 0
+					this.chatList.forEach(item => {
+						const imUserId = `user_${item.targetUserId}`
+						item.imUnread = unreadMap[imUserId] || 0
+						totalImUnread += item.imUnread
+					})
+					// 更新 tabBar badge（系统未读 + IM未读）
+					this.imUnreadTotal = totalImUnread
+					this.updateTabBarBadge()
+				} catch (e) {
+					// IM 未登录时静默处理
+				}
 			} catch (e) {
 				console.error('[消息页] 加载聊天列表失败:', e)
 			}
@@ -124,7 +149,7 @@ export default {
 
 		/** 更新底部导航栏未读数 badge */
 		updateTabBarBadge() {
-			const total = this.unreadCount.totalUnread
+			const total = (this.unreadCount.totalUnread || 0) + (this.imUnreadTotal || 0)
 			if (total > 0) {
 				uni.setTabBarBadge({
 					index: 2,
@@ -316,10 +341,37 @@ export default {
 	width: 88rpx;
 	height: 88rpx;
 	border-radius: 50%;
+	flex-shrink: 0;
+}
+
+.avatar-wrap {
+	position: relative;
 	margin-right: 24rpx;
 	flex-shrink: 0;
 }
 
+.avatar-wrap .chat-avatar {
+	margin-right: 0;
+}
+
+.unread-badge {
+	position: absolute;
+	top: -8rpx;
+	right: -8rpx;
+	background: #ff4d4f;
+	min-width: 36rpx;
+	height: 36rpx;
+	line-height: 36rpx;
+	border-radius: 18rpx;
+	padding: 0 8rpx;
+	text-align: center;
+}
+
+.unread-badge text {
+	font-size: 20rpx;
+	color: #fff;
+}
+
 .chat-info {
 	flex: 1;
 	overflow: hidden;
diff --git a/miniapp/pages/mine/earnings.vue b/miniapp/pages/mine/earnings.vue
index 1823eed..f293a6f 100644
--- a/miniapp/pages/mine/earnings.vue
+++ b/miniapp/pages/mine/earnings.vue
@@ -356,14 +356,13 @@ export default {
 }
 
 .amount-value {
-	font-size: 32rpx;
+	font-size: 40rpx;
 	color: rgba(255, 255, 255, 0.85);
 	font-weight: bold;
 	margin-bottom: 8rpx;
 }
 
 .amount-value.highlight {
-	font-size: 40rpx;
 	color: #ffffff;
 }
 
diff --git a/miniapp/pages/mine/mine.vue b/miniapp/pages/mine/mine.vue
index 8b27134..03dc65d 100644
--- a/miniapp/pages/mine/mine.vue
+++ b/miniapp/pages/mine/mine.vue
@@ -13,7 +13,7 @@
 			<image class="user-avatar" :src="userInfo.avatarUrl || '/static/logo.png'" mode="aspectFill"></image>
 			<view class="user-info">
 				<text class="user-name">{{ isLoggedIn ? (userInfo.nickname || '用户') : '点击注册/登录' }}</text>
-				<text class="user-uid" v-if="isLoggedIn">UID：{{ userInfo.id }}</text>
+				<text class="user-uid" v-if="isLoggedIn">UID：{{ userInfo.uid || userInfo.id }}</text>
 			</view>
 			<image class="arrow-icon" src="/static/ic_arrow.png" mode="aspectFit"></image>
 		</view>
diff --git a/miniapp/pages/order-hall/order-hall.vue b/miniapp/pages/order-hall/order-hall.vue
index 03a6613..94242a7 100644
--- a/miniapp/pages/order-hall/order-hall.vue
+++ b/miniapp/pages/order-hall/order-hall.vue
@@ -170,7 +170,8 @@
 		acceptOrder,
 		getCertificationStatus,
 		submitCertification,
-		getPageBanner
+		getPageBanner,
+		getServiceEntries
 	} from '../../utils/api'
 
 	export default {
@@ -227,12 +228,29 @@
 		onShow() {
 			const sysInfo = uni.getSystemInfoSync()
 			this.statusBarHeight = sysInfo.statusBarHeight || 0
-			// 重置认证状态缓存，确保每次进入页面重新获取
 			this.certStatus = null
 			this.loadBanner()
+			this.loadTabs()
 			this.loadOrders()
 		},
 		methods: {
+			/** 从服务入口获取标签排序 */
+			async loadTabs() {
+				try {
+					const entries = await getServiceEntries()
+					if (entries && entries.length > 0) {
+						// 服务入口名称到订单类型的映射
+						const nameMap = { '代取': 'Pickup', '代送': 'Delivery', '万能帮': 'Help', '代购': 'Purchase', '美食街': 'Food' }
+						const sorted = entries
+							.filter(e => nameMap[e.name])
+							.map(e => ({ label: e.name, value: nameMap[e.name] }))
+						if (sorted.length > 0) {
+							this.tabs = sorted
+							this.currentTab = sorted[0].value
+						}
+					}
+				} catch (e) {}
+			},
 			/** 加载顶部大图 */
 			async loadBanner() {
 				try {
diff --git a/miniapp/pages/order/my-orders.vue b/miniapp/pages/order/my-orders.vue
index e4fe733..188672b 100644
--- a/miniapp/pages/order/my-orders.vue
+++ b/miniapp/pages/order/my-orders.vue
@@ -258,7 +258,7 @@ export default {
 
 		getStatusLabel(status) {
 			const map = {
-				Pending: '待接单', InProgress: '进行中', WaitConfirm: '待确认',
+				Unpaid: '待支付', Pending: '待接单', InProgress: '进行中', WaitConfirm: '待确认',
 				Completed: '已完成', Cancelled: '已取消', Appealing: '申诉中'
 			}
 			return map[status] || status
diff --git a/miniapp/pages/order/order-detail.vue b/miniapp/pages/order/order-detail.vue
index 2166e23..a0b65a0 100644
--- a/miniapp/pages/order/order-detail.vue
+++ b/miniapp/pages/order/order-detail.vue
@@ -305,7 +305,7 @@ export default {
 
 		getStatusLabel(status) {
 			const map = {
-				Pending: '待接单', InProgress: '进行中', WaitConfirm: '待确认',
+				Unpaid: '待支付', Pending: '待接单', InProgress: '进行中', WaitConfirm: '待确认',
 				Completed: '已完成', Cancelled: '已取消', Appealing: '申诉中'
 			}
 			return map[status] || status
@@ -350,8 +350,16 @@ export default {
 			})
 		},
 
-		/** 跳转聊天页 */
+		/** 跳转聊天页（如果上一页就是聊天页，直接返回） */
 		goChat() {
+			const pages = getCurrentPages()
+			if (pages.length >= 2) {
+				const prevPage = pages[pages.length - 2]
+				if (prevPage.route === 'pages/message/chat') {
+					uni.navigateBack()
+					return
+				}
+			}
 			uni.navigateTo({ url: `/pages/message/chat?orderId=${this.orderId}` })
 		},
 
@@ -745,6 +753,10 @@ export default {
 	border: none;
 }
 
+.modal-btn::after {
+	border: none;
+}
+
 .modal-btn.cancel {
 	background-color: #f5f5f5;
 	color: #666666;
diff --git a/miniapp/pages/pickup/pickup.vue b/miniapp/pages/pickup/pickup.vue
index 8630278..c26a74d 100644
--- a/miniapp/pages/pickup/pickup.vue
+++ b/miniapp/pages/pickup/pickup.vue
@@ -79,7 +79,7 @@
 </template>
 
 <script>
-import { createOrder, getPageBanner, getMinCommission } from '../../utils/api'
+import { createOrder, getPageBanner, getMinCommission, cancelOrder, confirmPayment } from '../../utils/api'
 
 export default {
 	data() {
@@ -141,8 +141,8 @@ export default {
 				uni.showToast({ title: `跑腿佣金不可低于${this.minCommission}元`, icon: 'none' })
 				return false
 			}
-			if (val.includes('.') && val.split('.')[1].length > 1) {
-				uni.showToast({ title: '佣金最多支持小数点后1位', icon: 'none' })
+			if (val.includes('.') && val.split('.')[1].length > 2) {
+				uni.showToast({ title: '佣金最多支持小数点后2位', icon: 'none' })
 				return false
 			}
 			return true
@@ -191,7 +191,17 @@ export default {
 					commission,
 					totalAmount: commission
 				})
-				if (result.paymentParams) await this.wxPay(result.paymentParams)
+				if (result.paymentParams) {
+					try {
+						await this.wxPay(result.paymentParams)
+						// 支付成功，确认订单上架
+						try { await confirmPayment(result.id) } catch (ex) {}
+					} catch (e) {
+						// 支付失败/取消，撤销订单
+						try { await cancelOrder(result.id) } catch (ex) {}
+						return
+					}
+				}
 				uni.showToast({ title: '下单成功', icon: 'success' })
 				setTimeout(() => { uni.switchTab({ url: '/pages/index/index' }) }, 1500)
 			} catch (e) {} finally { this.submitting = false }
diff --git a/miniapp/pages/purchase/purchase.vue b/miniapp/pages/purchase/purchase.vue
index fcb7f70..7859a55 100644
--- a/miniapp/pages/purchase/purchase.vue
+++ b/miniapp/pages/purchase/purchase.vue
@@ -83,7 +83,9 @@
 	import {
 		createOrder,
 		getPageBanner,
-		getMinCommission
+		getMinCommission,
+		cancelOrder,
+		confirmPayment
 	} from '../../utils/api'
 
 	export default {
@@ -163,9 +165,9 @@
 					});
 					return false
 				}
-				if (val.includes('.') && val.split('.')[1].length > 1) {
+				if (val.includes('.') && val.split('.')[1].length > 2) {
 					uni.showToast({
-						title: '佣金最多支持小数点后1位',
+						title: '佣金最多支持小数点后2位',
 						icon: 'none'
 					});
 					return false
@@ -252,7 +254,17 @@
 						commission,
 						totalAmount: goodsAmount + commission
 					})
-				if (result.paymentParams) await this.wxPay(result.paymentParams)
+				if (result.paymentParams) {
+					try {
+						await this.wxPay(result.paymentParams)
+						// 支付成功，确认订单上架
+						try { await confirmPayment(result.id) } catch (ex) {}
+					} catch (e) {
+						// 支付失败/取消，撤销订单
+						try { await cancelOrder(result.id) } catch (ex) {}
+						return
+					}
+				}
 				uni.showToast({
 					title: '下单成功',
 					icon: 'success'
diff --git a/miniapp/stores/cart.js b/miniapp/stores/cart.js
index 9ce95a8..0b6b7d3 100644
--- a/miniapp/stores/cart.js
+++ b/miniapp/stores/cart.js
@@ -121,10 +121,6 @@ export const useCartStore = defineStore('cart', () => {
 		if (shop.items[index].quantity <= 0) {
 			shop.items.splice(index, 1)
 		}
-		// 如果门店购物车为空，移除门店
-		if (shop.items.length === 0) {
-			delete shops.value[currentShopId.value]
-		}
 	}
 
 	/** 清空所有购物车 */
diff --git a/miniapp/utils/api.js b/miniapp/utils/api.js
index 75c3115..b72b10a 100644
--- a/miniapp/utils/api.js
+++ b/miniapp/utils/api.js
@@ -58,6 +58,11 @@ export function cancelOrder(id) {
 	return request({ url: `/api/orders/${id}/cancel`, method: 'POST' })
 }
 
+/** 确认支付成功（前端支付成功后调用） */
+export function confirmPayment(id) {
+	return request({ url: `/api/orders/${id}/pay-confirm`, method: 'POST' })
+}
+
 /** 跑腿提交完成 */
 export function completeOrder(id, data) {
 	return request({ url: `/api/orders/${id}/complete`, method: 'POST', data })
diff --git a/miniapp/utils/im.js b/miniapp/utils/im.js
index 9811d4e..6483297 100644
--- a/miniapp/utils/im.js
+++ b/miniapp/utils/im.js
@@ -3,6 +3,7 @@
  * 负责初始化、登录、收发消息
  */
 import TencentCloudChat from '@tencentcloud/chat'
+import TIMUploadPlugin from 'tim-upload-plugin'
 import request from './request'
 
 let chat = null
@@ -28,6 +29,8 @@ export async function initIM() {
 	// 创建 SDK 实例
 	if (!chat) {
 		chat = TencentCloudChat.create({ SDKAppID: sdkAppId })
+		// 注册上传插件（发送图片/文件必需）
+		chat.registerPlugin({ 'tim-upload-plugin': TIMUploadPlugin })
 		chat.setLogLevel(1) // Release 级别日志
 
 		// 监听 SDK 就绪
@@ -189,14 +192,14 @@ export async function sendTextMessage(targetUserId, text, orderId) {
 /**
  * 发送图片消息
  * @param {string} targetUserId - 对方用户 ID
- * @param {string} filePath - 本地图片路径
+ * @param {Object} fileRes - uni.chooseImage 的 success 回调结果
  * @param {string|number} [orderId] - 关联订单ID
  */
-export async function sendImageMessage(targetUserId, filePath, orderId) {
+export async function sendImageMessage(targetUserId, fileRes, orderId) {
 	const message = chat.createImageMessage({
 		to: targetUserId,
 		conversationType: TencentCloudChat.TYPES.CONV_C2C,
-		payload: { file: { tempFilePaths: [filePath] } }
+		payload: { file: fileRes }
 	})
 	if (orderId) message.cloudCustomData = JSON.stringify({ orderId: String(orderId) })
 	const res = await chat.sendMessage(message)
@@ -289,6 +292,20 @@ export function formatIMMessage(msg, currentImUserId) {
 					orderId: msgOrderId
 				}
 			}
+			if (data.bizType === 'price-change-response') {
+				return {
+					id: msg.ID,
+					type: 'price-change-response',
+					priceChangeId: data.priceChangeId,
+					action: data.action,
+					status: data.status,
+					changeTypeLabel: data.changeTypeLabel,
+					content: data.description || '',
+					isSelf,
+					time: msg.time * 1000,
+					orderId: msgOrderId
+				}
+			}
 			if (data.bizType === 'order-status') {
 				return {
 					id: msg.ID,
diff --git a/server/Endpoints/AdminEndpoints.cs b/server/Endpoints/AdminEndpoints.cs
index a4c5e59..6d2210a 100644
--- a/server/Endpoints/AdminEndpoints.cs
+++ b/server/Endpoints/AdminEndpoints.cs
@@ -227,7 +227,8 @@ public static class AdminEndpoints
                 return new
                 {
                     r.Id, r.Nickname, r.Phone, r.RunnerScore, r.IsBanned, r.CreatedAt,
-                    AvgRating = stats?.AvgRating ?? 0,
+                    // 评价星级：基于评分计算，每20分一颗星，最低1星最高5星
+                    StarRating = Math.Round(Math.Clamp(r.RunnerScore / 20.0, 1.0, 5.0), 1),
                     ReviewCount = stats?.ReviewCount ?? 0
                 };
             }).ToList();
diff --git a/server/Endpoints/AuthEndpoints.cs b/server/Endpoints/AuthEndpoints.cs
index 900496f..460c15e 100644
--- a/server/Endpoints/AuthEndpoints.cs
+++ b/server/Endpoints/AuthEndpoints.cs
@@ -2,6 +2,7 @@ using CampusErrand.Data;
 using CampusErrand.Models;
 using CampusErrand.Models.Dtos;
 using CampusErrand.Services;
+using CampusErrand.Helpers;
 using Microsoft.EntityFrameworkCore;
 
 namespace CampusErrand.Endpoints;
@@ -42,6 +43,7 @@ public static class AuthEndpoints
             {
                 user = new User
                 {
+                    Uid = await BusinessHelpers.GenerateUniqueUid(db),
                     OpenId = sessionResult.OpenId!,
                     Phone = phoneNumber,
                     Nickname = $"用户{phoneNumber[^4..]}",
@@ -66,6 +68,7 @@ public static class AuthEndpoints
                 UserInfo = new UserInfo
                 {
                     Id = user.Id,
+                    Uid = user.Uid,
                     Phone = user.Phone,
                     Nickname = user.Nickname,
                     AvatarUrl = user.AvatarUrl,
@@ -98,6 +101,7 @@ public static class AuthEndpoints
                 var randomSuffix = Random.Shared.Next(1000, 9999).ToString();
                 user = new User
                 {
+                    Uid = await BusinessHelpers.GenerateUniqueUid(db),
                     OpenId = openId,
                     Phone = "",
                     Nickname = $"微信用户{randomSuffix}",
@@ -116,6 +120,7 @@ public static class AuthEndpoints
                 UserInfo = new UserInfo
                 {
                     Id = user.Id,
+                    Uid = user.Uid,
                     Phone = user.Phone,
                     Nickname = user.Nickname,
                     AvatarUrl = user.AvatarUrl,
diff --git a/server/Endpoints/MessageEndpoints.cs b/server/Endpoints/MessageEndpoints.cs
index a9261e6..25ab44a 100644
--- a/server/Endpoints/MessageEndpoints.cs
+++ b/server/Endpoints/MessageEndpoints.cs
@@ -179,6 +179,26 @@ public static class MessageEndpoints
             return Results.Ok(orders);
         }).RequireAuthorization();
 
+        // 管理端获取已发送通知列表
+        app.MapGet("/api/admin/notifications", async (AppDbContext db) =>
+        {
+            var list = await db.SystemMessages
+                .OrderByDescending(m => m.CreatedAt)
+                .Select(m => new
+                {
+                    m.Id,
+                    m.Title,
+                    ContentPreview = m.Content.Length > 80 ? m.Content.Substring(0, 80) + "…" : m.Content,
+                    m.ThumbnailUrl,
+                    TargetType = m.TargetType.ToString(),
+                    m.TargetUserIds,
+                    m.CreatedAt
+                })
+                .ToListAsync();
+
+            return Results.Ok(list);
+        }).RequireAuthorization("AdminOnly");
+
         // 管理端发布系统通知
         app.MapPost("/api/admin/notifications", async (CreateNotificationRequest request, AppDbContext db) =>
         {
@@ -218,5 +238,21 @@ public static class MessageEndpoints
                 CreatedAt = message.CreatedAt
             });
         }).RequireAuthorization("AdminOnly");
+
+        // 管理端删除通知
+        app.MapDelete("/api/admin/notifications/{id}", async (int id, AppDbContext db) =>
+        {
+            var msg = await db.SystemMessages.FindAsync(id);
+            if (msg == null)
+                return Results.NotFound(new { code = 404, message = "通知不存在" });
+
+            // 删除关联的已读记录
+            db.MessageReads.RemoveRange(
+                db.MessageReads.Where(r => r.MessageType == MessageType.System && r.MessageId == id));
+            db.SystemMessages.Remove(msg);
+            await db.SaveChangesAsync();
+
+            return Results.Ok(new { message = "已删除" });
+        }).RequireAuthorization("AdminOnly");
     }
 }
diff --git a/server/Endpoints/OrderEndpoints.cs b/server/Endpoints/OrderEndpoints.cs
index b1d0080..1307f96 100644
--- a/server/Endpoints/OrderEndpoints.cs
+++ b/server/Endpoints/OrderEndpoints.cs
@@ -36,10 +36,10 @@ public static class OrderEndpoints
                 return Results.BadRequest(new { code = 400, message = $"跑腿佣金不可低于{minCommission}元" });
             }
 
-            // 佣金校验：小数点后最多 1 位
-            if (request.Commission != Math.Round(request.Commission, 1))
+            // 佣金校验：小数点后最多 2 位
+            if (request.Commission != Math.Round(request.Commission, 2))
             {
-                return Results.BadRequest(new { code = 400, message = "跑腿佣金最多支持小数点后1位" });
+                return Results.BadRequest(new { code = 400, message = "跑腿佣金最多支持小数点后2位" });
             }
 
             // 计算支付总金额
@@ -89,7 +89,7 @@ public static class OrderEndpoints
                 OrderNo = orderNo,
                 OwnerId = userId,
                 OrderType = orderType,
-                Status = OrderStatus.Pending,
+                Status = OrderStatus.Unpaid,
                 ItemName = request.ItemName,
                 PickupLocation = request.PickupLocation,
                 DeliveryLocation = request.DeliveryLocation,
@@ -547,19 +547,41 @@ public static class OrderEndpoints
 
             if (result.TradeState == "SUCCESS")
             {
-                // 支付成功，更新订单状态（如果还是 Pending 说明支付完成）
+                // 支付成功，将待支付订单改为待接单
                 var order = await db.Orders.FirstOrDefaultAsync(o => o.OrderNo == result.OrderNo);
-                if (order != null)
+                if (order != null && order.Status == OrderStatus.Unpaid)
                 {
-                    Console.WriteLine($"[微信支付] 支付成功: {result.OrderNo}, 金额: {result.TotalAmount}分");
+                    order.Status = OrderStatus.Pending;
+                    await db.SaveChangesAsync();
+                    Console.WriteLine($"[微信支付] 支付成功，订单已上架: {result.OrderNo}, 金额: {result.TotalAmount}分");
                 }
             }
 
             return Results.Json(new { code = "SUCCESS", message = "OK" });
         }).AllowAnonymous();
 
-        // 取消订单（仅单主可取消待接单订单）
-        app.MapPost("/api/orders/{id}/cancel", async (int id, HttpContext httpContext, AppDbContext db) =>
+        // 前端支付成功后确认订单（本地开发用，生产环境由回调处理）
+        app.MapPost("/api/orders/{id}/pay-confirm", async (int id, HttpContext httpContext, AppDbContext db) =>
+        {
+            var userIdClaim = httpContext.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier);
+            if (userIdClaim == null) return Results.Unauthorized();
+            var userId = int.Parse(userIdClaim.Value);
+
+            var order = await db.Orders.FirstOrDefaultAsync(o => o.Id == id && o.OwnerId == userId);
+            if (order == null)
+                return Results.NotFound(new { code = 404, message = "订单不存在" });
+
+            if (order.Status == OrderStatus.Unpaid)
+            {
+                order.Status = OrderStatus.Pending;
+                await db.SaveChangesAsync();
+            }
+
+            return Results.Ok(new { id = order.Id, status = order.Status.ToString() });
+        }).RequireAuthorization();
+
+        // 取消订单（仅单主可取消待支付或待接单订单，自动退款）
+        app.MapPost("/api/orders/{id}/cancel", async (int id, HttpContext httpContext, AppDbContext db, WxPayService wxPay) =>
         {
             var userIdClaim = httpContext.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier);
             if (userIdClaim == null) return Results.Unauthorized();
@@ -572,13 +594,31 @@ public static class OrderEndpoints
             if (order.OwnerId != userId)
                 return Results.BadRequest(new { code = 400, message = "仅单主可取消订单" });
 
-            if (order.Status != OrderStatus.Pending)
-                return Results.BadRequest(new { code = 400, message = "仅待接单状态的订单可取消" });
+            if (order.Status != OrderStatus.Pending && order.Status != OrderStatus.Unpaid)
+                return Results.BadRequest(new { code = 400, message = "仅待支付或待接单状态的订单可取消" });
 
+            var wasPaid = order.Status == OrderStatus.Pending; // 已支付的才需要退款
             order.Status = OrderStatus.Cancelled;
             await db.SaveChangesAsync();
 
-            return Results.Ok(new { id = order.Id, orderNo = order.OrderNo, status = order.Status.ToString() });
+            // 已支付的订单发起微信退款（原路返回）
+            var refundSuccess = false;
+            if (wasPaid)
+            {
+                try
+                {
+                    var totalFen = (int)(order.TotalAmount * 100);
+                    var refundNo = $"R{order.OrderNo}";
+                    refundSuccess = await wxPay.Refund(order.OrderNo, refundNo, totalFen, totalFen, "用户取消订单");
+                    Console.WriteLine($"[订单取消] {order.OrderNo} 退款{(refundSuccess ? "成功" : "失败")}");
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"[订单取消] {order.OrderNo} 退款异常: {ex.Message}");
+                }
+            }
+
+            return Results.Ok(new { id = order.Id, orderNo = order.OrderNo, status = order.Status.ToString(), refundSuccess });
         }).RequireAuthorization();
 
         // 跑腿提交完成
@@ -915,7 +955,7 @@ public static class OrderEndpoints
         }).RequireAuthorization();
 
         // 响应改价（同意或拒绝）
-        app.MapPut("/api/orders/{id}/price-change/{changeId}", async (int id, int changeId, RespondPriceChangeRequest request, HttpContext httpContext, AppDbContext db) =>
+        app.MapPut("/api/orders/{id}/price-change/{changeId}", async (int id, int changeId, RespondPriceChangeRequest request, HttpContext httpContext, AppDbContext db, WxPayService wxPay) =>
         {
             var userIdClaim = httpContext.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier);
             if (userIdClaim == null) return Results.Unauthorized();
@@ -931,11 +971,9 @@ public static class OrderEndpoints
             if (priceChange.Status != PriceChangeStatus.Pending)
                 return Results.BadRequest(new { code = 400, message = "该改价申请已处理" });
 
-            // 不能自己响应自己的改价申请
             if (priceChange.InitiatorId == userId)
                 return Results.BadRequest(new { code = 400, message = "不能响应自己的改价申请" });
 
-            // 仅订单相关方可响应
             var order = priceChange.Order!;
             if (userId != order.OwnerId && userId != order.RunnerId)
                 return Results.BadRequest(new { code = 400, message = "仅订单相关方可响应改价" });
@@ -945,35 +983,78 @@ public static class OrderEndpoints
                 return Results.BadRequest(new { code = 400, message = "操作不合法，仅支持 Accepted 或 Rejected" });
 
             priceChange.Status = action;
+            var difference = priceChange.NewPrice - priceChange.OriginalPrice;
+            object? paymentParams = null;
+            var refundSuccess = false;
 
-            // 同意改价时更新订单金额
             if (action == PriceChangeStatus.Accepted)
             {
+                var oldTotal = order.TotalAmount;
+
                 if (priceChange.ChangeType == PriceChangeType.Commission)
-                {
                     order.Commission = priceChange.NewPrice;
-                }
                 else
-                {
                     order.GoodsAmount = priceChange.NewPrice;
-                }
 
                 // 重新计算支付总金额
                 if (order.OrderType == OrderType.Help || order.OrderType == OrderType.Purchase || order.OrderType == OrderType.Food)
-                {
                     order.TotalAmount = (order.GoodsAmount ?? 0) + order.Commission;
-                }
                 else
-                {
                     order.TotalAmount = order.Commission;
+
+                var totalDiff = order.TotalAmount - oldTotal;
+
+                // 需要补价：创建微信支付订单
+                if (totalDiff > 0)
+                {
+                    try
+                    {
+                        var owner = await db.Users.FindAsync(order.OwnerId);
+                        if (owner != null && !string.IsNullOrEmpty(owner.OpenId))
+                        {
+                            var notifyUrl = $"{httpContext.Request.Scheme}://{httpContext.Request.Host}/api/pay/notify";
+                            var payOrderNo = $"P{order.OrderNo}{DateTime.UtcNow:mmss}";
+                            var payResult = await wxPay.CreateJsapiOrder(payOrderNo, totalDiff, "校园跑腿-改价补缴", owner.OpenId, notifyUrl);
+                            if (payResult.Success)
+                            {
+                                paymentParams = new
+                                {
+                                    timeStamp = payResult.PaymentParams!.TimeStamp,
+                                    nonceStr = payResult.PaymentParams.NonceStr,
+                                    package_ = payResult.PaymentParams.Package,
+                                    signType = payResult.PaymentParams.SignType,
+                                    paySign = payResult.PaymentParams.PaySign
+                                };
+                            }
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Console.WriteLine($"[改价] 补价支付创建失败: {ex.Message}");
+                    }
+                }
+                // 需要退款：自动退款
+                else if (totalDiff < 0)
+                {
+                    try
+                    {
+                        var refundAmount = Math.Abs(totalDiff);
+                        var refundFen = (int)(refundAmount * 100);
+                        var totalFen = (int)(oldTotal * 100);
+                        var refundNo = $"RP{order.OrderNo}{DateTime.UtcNow:mmss}";
+                        refundSuccess = await wxPay.Refund(order.OrderNo, refundNo, totalFen, refundFen, "改价退款");
+                        Console.WriteLine($"[改价] 退款{(refundSuccess ? "成功" : "失败")}: ¥{refundAmount}");
+                    }
+                    catch (Exception ex)
+                    {
+                        Console.WriteLine($"[改价] 退款失败: {ex.Message}");
+                    }
                 }
             }
 
             await db.SaveChangesAsync();
 
-            var difference = priceChange.NewPrice - priceChange.OriginalPrice;
-
-            return Results.Ok(new PriceChangeResponse
+            return Results.Ok(new
             {
                 Id = priceChange.Id,
                 OrderId = priceChange.OrderId,
@@ -983,7 +1064,9 @@ public static class OrderEndpoints
                 NewPrice = priceChange.NewPrice,
                 Difference = difference,
                 Status = priceChange.Status.ToString(),
-                CreatedAt = priceChange.CreatedAt
+                CreatedAt = priceChange.CreatedAt,
+                PaymentParams = paymentParams,
+                RefundSuccess = refundSuccess
             });
         }).RequireAuthorization();
 
diff --git a/server/Endpoints/ShopEndpoints.cs b/server/Endpoints/ShopEndpoints.cs
index 21cb3da..ca78255 100644
--- a/server/Endpoints/ShopEndpoints.cs
+++ b/server/Endpoints/ShopEndpoints.cs
@@ -193,13 +193,29 @@ public static class ShopEndpoints
                 return Results.NotFound(new { code = 404, message = "门店不存在" });
             }
 
-            // 级联删除菜品和门店 Banner
-            db.Dishes.RemoveRange(shop.Dishes);
-            db.ShopBanners.RemoveRange(shop.ShopBanners);
-            db.Shops.Remove(shop);
-            await db.SaveChangesAsync();
+            try
+            {
+                // 先删除订单中引用该门店的菜品项
+                var dishIds = shop.Dishes.Select(d => d.Id).ToList();
+                db.FoodOrderItems.RemoveRange(db.FoodOrderItems.Where(f => f.ShopId == id || dishIds.Contains(f.DishId)));
+                await db.SaveChangesAsync();
 
-            return Results.NoContent();
+                // 再删除菜品和门店 Banner
+                db.Dishes.RemoveRange(shop.Dishes);
+                db.ShopBanners.RemoveRange(shop.ShopBanners);
+                await db.SaveChangesAsync();
+
+                // 最后删除门店
+                db.Shops.Remove(shop);
+                await db.SaveChangesAsync();
+
+                return Results.NoContent();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[管理端] 删除门店失败: {ex.InnerException?.Message ?? ex.Message}");
+                return Results.BadRequest(new { code = 400, message = $"删除失败: {ex.InnerException?.Message ?? ex.Message}" });
+            }
         }).RequireAuthorization("AdminOnly");
 
         // 获取门店 Banner 列表
@@ -351,10 +367,22 @@ public static class ShopEndpoints
                 return Results.NotFound(new { code = 404, message = "菜品不存在" });
             }
 
-            db.Dishes.Remove(dish);
-            await db.SaveChangesAsync();
+            try
+            {
+                // 先删除订单中引用该菜品的记录
+                db.FoodOrderItems.RemoveRange(db.FoodOrderItems.Where(f => f.DishId == dishId));
+                await db.SaveChangesAsync();
 
-            return Results.NoContent();
+                db.Dishes.Remove(dish);
+                await db.SaveChangesAsync();
+
+                return Results.NoContent();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[管理端] 删除菜品失败: {ex.InnerException?.Message ?? ex.Message}");
+                return Results.BadRequest(new { code = 400, message = $"删除失败: {ex.InnerException?.Message ?? ex.Message}" });
+            }
         }).RequireAuthorization("AdminOnly");
     }
 }
diff --git a/server/Helpers/BusinessHelpers.cs b/server/Helpers/BusinessHelpers.cs
index cc454fc..6af15d5 100644
--- a/server/Helpers/BusinessHelpers.cs
+++ b/server/Helpers/BusinessHelpers.cs
@@ -188,4 +188,19 @@ public static class BusinessHelpers
             Console.WriteLine($"[定时任务] 自动确认了 {expiredOrders.Count} 个超时订单");
         }
     }
+
+    /// <summary>
+    /// 生成唯一的随机6位数字UID
+    /// </summary>
+    internal static async Task<string> GenerateUniqueUid(AppDbContext db)
+    {
+        for (var i = 0; i < 100; i++)
+        {
+            var uid = Random.Shared.Next(100000, 999999).ToString();
+            var exists = await db.Users.AnyAsync(u => u.Uid == uid);
+            if (!exists) return uid;
+        }
+        // 极端情况：用7位
+        return Random.Shared.Next(1000000, 9999999).ToString();
+    }
 }
diff --git a/server/Migrations/20260401032529_AddUserUid.Designer.cs b/server/Migrations/20260401032529_AddUserUid.Designer.cs
new file mode 100644
index 0000000..3278eca
--- /dev/null
+++ b/server/Migrations/20260401032529_AddUserUid.Designer.cs
@@ -0,0 +1,912 @@
+// <auto-generated />
+using System;
+using CampusErrand.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace CampusErrand.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260401032529_AddUserUid")]
+    partial class AddUserUid
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("CampusErrand.Models.Appeal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Result")
+                        .IsRequired()
+                        .HasMaxLength(1024)
+                        .HasColumnType("nvarchar(1024)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderId");
+
+                    b.ToTable("Appeals");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Banner", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ImageUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("LinkType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("LinkUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SortOrder");
+
+                    b.ToTable("Banners");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.CommissionRule", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<decimal?>("MaxAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<decimal>("MinAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<decimal>("Rate")
+                        .HasColumnType("decimal(10,4)");
+
+                    b.Property<string>("RateType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("CommissionRules");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Dish", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<string>("Photo")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Earning", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<decimal>("Commission")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<DateTime>("FrozenUntil")
+                        .HasColumnType("datetime2");
+
+                    b.Property<decimal?>("GoodsAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<decimal>("NetEarning")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("PlatformFee")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Earnings");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.FoodOrderItem", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("DishId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Quantity")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("UnitPrice")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("OrderId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("FoodOrderItems");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.MessageRead", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("MessageId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("MessageType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(450)");
+
+                    b.Property<DateTime>("ReadAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId", "MessageType", "MessageId")
+                        .IsUnique();
+
+                    b.ToTable("MessageReads");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime?>("AcceptedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<decimal>("Commission")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<DateTime?>("CompletedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("CompletionProof")
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("DeliveryLocation")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
+                    b.Property<decimal?>("GoodsAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<bool>("IsReviewed")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("ItemName")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
+                    b.Property<string>("OrderNo")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("nvarchar(32)");
+
+                    b.Property<string>("OrderType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("OwnerId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Phone")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("nvarchar(20)");
+
+                    b.Property<string>("PickupLocation")
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
+                    b.Property<string>("Remark")
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<int?>("RunnerId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(450)");
+
+                    b.Property<decimal>("TotalAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderNo")
+                        .IsUnique();
+
+                    b.HasIndex("OwnerId");
+
+                    b.HasIndex("RunnerId");
+
+                    b.HasIndex("Status");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.PriceChange", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ChangeType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("InitiatorId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("NewPrice")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("OriginalPrice")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InitiatorId");
+
+                    b.HasIndex("OrderId");
+
+                    b.ToTable("PriceChanges");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Review", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Content")
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<bool>("IsDisabled")
+                        .HasColumnType("bit");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Rating")
+                        .HasColumnType("int");
+
+                    b.Property<int>("RunnerId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ScoreChange")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderId");
+
+                    b.HasIndex("RunnerId");
+
+                    b.ToTable("Reviews");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.RunnerCertification", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Phone")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("nvarchar(20)");
+
+                    b.Property<string>("RealName")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("nvarchar(32)");
+
+                    b.Property<DateTime?>("ReviewedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("RunnerCertifications");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.ServiceEntry", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("IconUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("nvarchar(32)");
+
+                    b.Property<string>("PagePath")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SortOrder");
+
+                    b.ToTable("ServiceEntries");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<bool>("IsEnabled")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Location")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<string>("Notice")
+                        .HasMaxLength(1024)
+                        .HasColumnType("nvarchar(1024)");
+
+                    b.Property<decimal>("PackingFeeAmount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<string>("PackingFeeType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Photo")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.ShopBanner", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ImageUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopBanners");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.SystemConfig", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Key")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Key")
+                        .IsUnique();
+
+                    b.ToTable("SystemConfigs");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.SystemMessage", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Content")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("TargetType")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("TargetUserIds")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("ThumbnailUrl")
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("nvarchar(128)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("SystemMessages");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("AvatarUrl")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Nickname")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<string>("OpenId")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("nvarchar(128)");
+
+                    b.Property<string>("Phone")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("nvarchar(20)");
+
+                    b.Property<string>("Role")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("RunnerScore")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Uid")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("nvarchar(10)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OpenId")
+                        .IsUnique();
+
+                    b.HasIndex("Phone");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Withdrawal", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<decimal>("Amount")
+                        .HasColumnType("decimal(10,2)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("PaymentMethod")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<DateTime?>("ProcessedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("QrCodeImage")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("nvarchar(512)");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Withdrawals");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Appeal", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Order", "Order")
+                        .WithMany()
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Order");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Dish", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Shop", "Shop")
+                        .WithMany("Dishes")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Earning", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Order", "Order")
+                        .WithMany()
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Order");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.FoodOrderItem", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Dish", "Dish")
+                        .WithMany()
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.Order", "Order")
+                        .WithMany("FoodOrderItems")
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.Shop", "Shop")
+                        .WithMany()
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Order");
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.MessageRead", b =>
+                {
+                    b.HasOne("CampusErrand.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Order", b =>
+                {
+                    b.HasOne("CampusErrand.Models.User", "Owner")
+                        .WithMany()
+                        .HasForeignKey("OwnerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.User", "Runner")
+                        .WithMany()
+                        .HasForeignKey("RunnerId")
+                        .OnDelete(DeleteBehavior.Restrict);
+
+                    b.Navigation("Owner");
+
+                    b.Navigation("Runner");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.PriceChange", b =>
+                {
+                    b.HasOne("CampusErrand.Models.User", "Initiator")
+                        .WithMany()
+                        .HasForeignKey("InitiatorId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.Order", "Order")
+                        .WithMany()
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Initiator");
+
+                    b.Navigation("Order");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Review", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Order", "Order")
+                        .WithMany()
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("CampusErrand.Models.User", "Runner")
+                        .WithMany()
+                        .HasForeignKey("RunnerId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Order");
+
+                    b.Navigation("Runner");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.RunnerCertification", b =>
+                {
+                    b.HasOne("CampusErrand.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.ShopBanner", b =>
+                {
+                    b.HasOne("CampusErrand.Models.Shop", "Shop")
+                        .WithMany("ShopBanners")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Withdrawal", b =>
+                {
+                    b.HasOne("CampusErrand.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Order", b =>
+                {
+                    b.Navigation("FoodOrderItems");
+                });
+
+            modelBuilder.Entity("CampusErrand.Models.Shop", b =>
+                {
+                    b.Navigation("Dishes");
+
+                    b.Navigation("ShopBanners");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/server/Migrations/20260401032529_AddUserUid.cs b/server/Migrations/20260401032529_AddUserUid.cs
new file mode 100644
index 0000000..f4324e9
--- /dev/null
+++ b/server/Migrations/20260401032529_AddUserUid.cs
@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CampusErrand.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddUserUid : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Uid",
+                table: "Users",
+                type: "nvarchar(10)",
+                maxLength: 10,
+                nullable: false,
+                defaultValue: "");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Uid",
+                table: "Users");
+        }
+    }
+}
diff --git a/server/Migrations/AppDbContextModelSnapshot.cs b/server/Migrations/AppDbContextModelSnapshot.cs
index 5c53ebf..14e1c95 100644
--- a/server/Migrations/AppDbContextModelSnapshot.cs
+++ b/server/Migrations/AppDbContextModelSnapshot.cs
@@ -669,6 +669,11 @@ namespace CampusErrand.Migrations
                     b.Property<int>("RunnerScore")
                         .HasColumnType("int");
 
+                    b.Property<string>("Uid")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("nvarchar(10)");
+
                     b.HasKey("Id");
 
                     b.HasIndex("OpenId")
diff --git a/server/Models/Dtos/AuthDtos.cs b/server/Models/Dtos/AuthDtos.cs
index 5afc18c..234399e 100644
--- a/server/Models/Dtos/AuthDtos.cs
+++ b/server/Models/Dtos/AuthDtos.cs
@@ -48,6 +48,7 @@ public class LoginResponse
 public class UserInfo
 {
     public int Id { get; set; }
+    public string Uid { get; set; } = string.Empty;
     public string Phone { get; set; } = string.Empty;
     public string Nickname { get; set; } = string.Empty;
     public string AvatarUrl { get; set; } = string.Empty;
diff --git a/server/Models/Enums.cs b/server/Models/Enums.cs
index ee452ce..ed5fe90 100644
--- a/server/Models/Enums.cs
+++ b/server/Models/Enums.cs
@@ -27,6 +27,7 @@ public enum OrderType
 /// </summary>
 public enum OrderStatus
 {
+    Unpaid = -1,      // 待支付
     Pending = 0,      // 待接单
     InProgress = 1,   // 进行中
     WaitConfirm = 2,  // 待确认
diff --git a/server/Models/User.cs b/server/Models/User.cs
index bbab3df..abb8979 100644
--- a/server/Models/User.cs
+++ b/server/Models/User.cs
@@ -10,6 +10,10 @@ public class User
     [Key]
     public int Id { get; set; }
 
+    /// <summary>展示用 UID（随机6位数字）</summary>
+    [MaxLength(10)]
+    public string Uid { get; set; } = string.Empty;
+
     /// <summary>微信 OpenID</summary>
     [MaxLength(128)]
     public string OpenId { get; set; } = string.Empty;
diff --git a/server/Services/TencentIMService.cs b/server/Services/TencentIMService.cs
index 52a4865..812e674 100644
--- a/server/Services/TencentIMService.cs
+++ b/server/Services/TencentIMService.cs
@@ -73,12 +73,13 @@ public class TencentIMService
             Peer_Account = toUserId,
             MaxCnt = maxCnt,
             MinTime = minTime,
-            MaxTime = maxTime
+            MaxTime = maxTime > 0 ? maxTime : DateTimeOffset.UtcNow.ToUnixTimeSeconds()
         };
 
         var content = new StringContent(JsonSerializer.Serialize(body), Encoding.UTF8, "application/json");
         var response = await _httpClient.PostAsync(url, content);
         var json = await response.Content.ReadAsStringAsync();
+        Console.WriteLine($"[IM] 拉取漫游消息: {fromUserId} -> {toUserId}, 响应: {json}");
         return JsonSerializer.Deserialize<JsonElement>(json);
     }
 }