feat: 用户信息完善 + 一起记功能

- users 表添加 nickname、avatar_url 字段
- 用户信息 API（GET/PUT /me）+ 头像上传（multer）
- 头像通过 API 路由获取（公开，不经过 auth）
- 登录接口返回用户昵称和头像
- 用户信息 Store + 个人资料编辑页面
- 我的页面和首页显示真实用户信息
- 群组表（groups、group_members）+ transactions 添加 group_id
- 群组 API（创建/加入/退出/解散）
- 交易和统计 API 支持 group_id 视图切换
- 群组客户端 Store + 身份切换
- 群组管理页面
- App 初始化群组 Store
- UPLOAD_DIR 配置化
- Node.js 备份替代 mysqldump
- 统一前端 BASE_URL（config.ts）
- uploads 加入 .gitignore
- 修复 trust proxy 警告

client/src/pages/index/index.vue

@@ -2,11 +2,12 @@
   <view class="page">
     <view class="header-fixed">
       <view class="status-bar" :style="{ height: statusBarHeight + 'px' }"></view>
-      <view class="header">
+      <view class="header" :style="{ paddingRight: capsuleRight + 'px' }">
         <view class="avatar-wrap">
-          <Icon name="user" :size="36" color="#8B7E7E" />
+          <image v-if="userStore.avatarUrl" :src="userStore.avatarUrl" class="avatar-img" mode="aspectFill" />
+          <Icon v-else name="user" :size="36" color="#8B7E7E" />
         </view>
-        <text class="greeting">{{ greeting }}，小菜</text>
+        <text class="greeting">{{ greeting }}，{{ userStore.nickname }}</text>
         <view class="bell" @tap="showNotification">
           <Icon name="bell" :size="40" color="#8B7E7E" />
         </view>
@@ -117,9 +118,12 @@ import { onShow, onPullDownRefresh } from '@dcloudio/uni-app'
 import { useTransactionStore } from '@/stores/transaction'
 import { useStatsStore } from '@/stores/stats'
 import { useBudgetStore } from '@/stores/budget'
+import { useUserStore } from '@/stores/user'
+import { useGroupStore } from '@/stores/group'
+import { waitForReady } from '@/utils/app-ready'
 import { getOverview } from '@/api/stats'
 import { formatAmount, formatAmountRaw } from '@/utils/format'
-import { statusBarHeight } from '@/utils/system'
+import { statusBarHeight, capsuleRight } from '@/utils/system'
 import BudgetBar from '@/components/BudgetBar/BudgetBar.vue'
 import TransactionItem from '@/components/TransactionItem/TransactionItem.vue'
 import Icon from '@/components/Icon/Icon.vue'
@@ -128,11 +132,13 @@ import Skeleton from '@/components/Skeleton/Skeleton.vue'
 const txStore = useTransactionStore()
 const statsStore = useStatsStore()
 const budgetStore = useBudgetStore()
+const userStore = useUserStore()
+const groupStore = useGroupStore()
 
 const DEFAULT_BUDGET = 500000 // 5000元（分）
 
-const overview = ref({ expense: 0, income: 0, count: 0, daily: 0 })
-const budget = ref<any>(null)
+const overview = computed(() => statsStore.overview)
+const budget = computed(() => budgetStore.budget)
 const recentTx = ref<any[]>([])
 const loading = ref(true)
 const loadError = ref(false)
@@ -149,9 +155,10 @@ const greeting = computed(() => {
   return '晚上好'
 })
 
-async function loadData() {
+async function loadData(silent = false) {
+  await waitForReady()
   try {
-    loading.value = true
+    if (!silent) loading.value = true
     loadError.value = false
     const now = new Date()
     const today = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}-${String(now.getDate()).padStart(2, '0')}`
@@ -159,14 +166,13 @@ async function loadData() {
       statsStore.fetchOverview(),
       budgetStore.fetchBudget(),
       txStore.fetchTransactions({ page: 1 }),
-      fetchTodayData(today)
+      fetchTodayData(today),
+      userStore.fetchUserInfo()
     ])
-    overview.value = statsStore.overview
-    budget.value = budgetStore.budget
     recentTx.value = txStore.transactions.slice(0, 5)
   } catch (e) {
     console.error('Load error:', e)
-    loadError.value = true
+    if (!silent) loadError.value = true
   } finally {
     loading.value = false
   }
@@ -174,7 +180,7 @@ async function loadData() {
 
 async function fetchTodayData(today: string) {
   try {
-    const data = await getOverview({ startDate: today, endDate: today })
+    const data = await getOverview({ startDate: today, endDate: today, group_id: groupStore.currentGroupId })
     todayExpense.value = data.expense || 0
     todayIncome.value = data.income || 0
     todayCount.value = data.count || 0
@@ -192,7 +198,7 @@ onMounted(() => {
 
 // Refresh data when returning from other pages (e.g., after adding a transaction)
 onShow(() => {
-  if (initialLoaded.value && !loading.value) loadData()
+  if (initialLoaded.value && !loading.value) loadData(true)
 })
 
 onPullDownRefresh(() => {
@@ -249,6 +255,12 @@ function goBills() {
   display: flex;
   align-items: center;
   justify-content: center;
+  overflow: hidden;
+}
+
+.avatar-img {
+  width: 100%;
+  height: 100%;
 }
 
 .greeting {