diff --git a/client/src/api/admin.ts b/client/src/api/admin.ts
index 73e5a38..bc4c138 100644
--- a/client/src/api/admin.ts
+++ b/client/src/api/admin.ts
@@ -54,3 +54,11 @@ export function updateUserRole(id: number, role: 'user' | 'admin') {
 export function deleteUser(id: number) {
   return request({ url: `/admin/users/${id}`, method: 'DELETE' })
 }
+
+// 健康检查类型从 @/api/health 导入
+export type { HealthStatus } from '@/api/health'
+
+/** 获取服务健康状态（管理员） */
+export function getHealth() {
+  return request<import('./health').HealthStatus>({ url: '/health' })
+}
diff --git a/client/src/api/backup.ts b/client/src/api/backup.ts
new file mode 100644
index 0000000..1c4dce9
--- /dev/null
+++ b/client/src/api/backup.ts
@@ -0,0 +1,38 @@
+import { request } from '@/utils/request'
+
+/** 备份记录 */
+export interface Backup {
+  id: number
+  name: string
+  size: number
+  status: 'pending' | 'completed' | 'failed'
+  created_at: string
+  downloadToken?: string
+}
+
+/** 备份列表响应 */
+export interface BackupList {
+  list: Backup[]
+  total: number
+}
+
+/** 获取备份列表 */
+export function getBackups(params?: { page?: number; pageSize?: number }) {
+  return request<BackupList>({ url: '/backup', data: params })
+}
+
+/** 创建备份 */
+export function createBackup() {
+  return request<{ id: number }>({ url: '/backup', method: 'POST' })
+}
+
+/** 删除备份 */
+export function deleteBackup(id: number) {
+  return request({ url: `/backup/${id}`, method: 'DELETE' })
+}
+
+/** 获取备份下载地址 */
+export function getBackupDownloadUrl(id: number, token: string): string {
+  const apiBase = typeof window !== 'undefined' ? '/api' : ''
+  return `${apiBase}/backup/${id}/download?token=${encodeURIComponent(token)}`
+}
diff --git a/client/src/api/export.ts b/client/src/api/export.ts
new file mode 100644
index 0000000..d0e9a32
--- /dev/null
+++ b/client/src/api/export.ts
@@ -0,0 +1,32 @@
+import { request } from '@/utils/request'
+import { API_BASE } from '@/config'
+
+/** 导出参数 */
+export interface ExportParams {
+  startDate: string
+  endDate: string
+  type?: 'expense' | 'income' | 'all'
+  format?: 'csv' | 'json'
+}
+
+/** 请求服务端导出（返回流） */
+export function requestExport(params: ExportParams) {
+  return request<{ downloadUrl: string }>({
+    url: '/export',
+    data: { ...params, format: params.format || 'csv' }
+  })
+}
+
+/** 获取服务端导出下载 URL */
+export function getExportUrl(params: ExportParams): string {
+  const query = new URLSearchParams()
+  query.set('startDate', params.startDate)
+  query.set('endDate', params.endDate)
+  if (params.type) query.set('type', params.type)
+  if (params.format) query.set('format', params.format)
+
+  const token = uni.getStorageSync('xc:token')
+  if (token) query.set('token', token)
+
+  return `${API_BASE}/export?${query.toString()}`
+}
diff --git a/client/src/api/feedback.ts b/client/src/api/feedback.ts
index 6fe0c15..46fa7f4 100644
--- a/client/src/api/feedback.ts
+++ b/client/src/api/feedback.ts
@@ -29,6 +29,22 @@ export function getFeedbackList(params?: { page?: number; pageSize?: number; sta
   return request<{ list: Feedback[]; total: number; page: number; pageSize: number }>({ url: '/feedback', data: params })
 }
 
+/** 我的反馈条目（简化版） */
+export interface MyFeedback {
+  id: number
+  type: string
+  content: string
+  contact: string
+  status: 'pending' | 'processed' | 'ignored'
+  admin_reply?: string
+  created_at: string
+}
+
+/** 获取我的反馈列表 */
+export function getMyFeedbacks(params?: { page?: number; pageSize?: number }) {
+  return request<{ list: MyFeedback[]; total: number; page: number; pageSize: number }>({ url: '/feedback/mine', data: params })
+}
+
 /** 更新反馈状态（管理员） */
 export function updateFeedbackStatus(id: number, status: Feedback['status'], admin_reply?: string) {
   return request({ url: `/feedback/${id}/status`, method: 'PUT', data: { status, admin_reply } })
diff --git a/client/src/api/health.ts b/client/src/api/health.ts
new file mode 100644
index 0000000..1e9a691
--- /dev/null
+++ b/client/src/api/health.ts
@@ -0,0 +1,15 @@
+import { request } from '@/utils/request'
+
+/** 健康检查结果 */
+export interface HealthStatus {
+  status: 'ok' | 'degraded' | 'error'
+  uptime: number
+  db: 'connected' | 'disconnected'
+  version: string
+  timestamp: string
+}
+
+/** 获取服务健康状态 */
+export function getHealth() {
+  return request<HealthStatus>({ url: '/health' })
+}
diff --git a/client/src/api/stats.ts b/client/src/api/stats.ts
index c16fe17..fcdbf5c 100644
--- a/client/src/api/stats.ts
+++ b/client/src/api/stats.ts
@@ -25,6 +25,7 @@ export interface CategoryStat {
 export interface TrendPoint {
   date: string
   amount: number
+  label?: string
 }
 
 /** 获取概览数据 */
@@ -33,13 +34,13 @@ export function getOverview(params?: { month?: string; startDate?: string; endDa
 }
 
 /** 获取分类统计 */
-export function getCategoryStats(month?: string, type: string = 'expense', group_id?: number | null) {
-  return request<CategoryStat[]>({ url: '/stats/category', data: { month, type, group_id } })
+export function getCategoryStats(month?: string, type: string = 'expense', group_id?: number | null, period?: 'week' | 'month' | 'year') {
+  return request<CategoryStat[]>({ url: '/stats/category', data: { month, type, group_id, period } })
 }
 
 /** 获取趋势数据 */
-export function getTrend(month?: string, type: string = 'expense', group_id?: number | null) {
-  return request<TrendPoint[]>({ url: '/stats/trend', data: { month, type, group_id } })
+export function getTrend(month?: string, type: string = 'expense', group_id?: number | null, period?: 'week' | 'month' | 'year') {
+  return request<TrendPoint[]>({ url: '/stats/trend', data: { month, type, group_id, period } })
 }
 
 /** 智能分类建议结果 */
diff --git a/client/src/api/tag.ts b/client/src/api/tag.ts
new file mode 100644
index 0000000..b8e87ba
--- /dev/null
+++ b/client/src/api/tag.ts
@@ -0,0 +1,47 @@
+import { request } from '@/utils/request'
+
+/** 标签 */
+export interface Tag {
+  id: number
+  name: string
+  color: string
+  created_at: string
+}
+
+/** 标签统计 */
+export interface TagStat {
+  tag_id: number
+  tag_name: string
+  tag_color: string
+  count: number
+  total_amount: number
+}
+
+/** 获取标签列表 */
+export function getTags() {
+  return request<Tag[]>({ url: '/tags' })
+}
+
+/** 创建标签 */
+export function createTag(data: { name: string; color: string }) {
+  return request<{ id: number }>({ url: '/tags', method: 'POST', data })
+}
+
+/** 更新标签 */
+export function updateTag(id: number, data: { name?: string; color?: string }) {
+  return request({ url: `/tags/${id}`, method: 'PUT', data })
+}
+
+/** 删除标签 */
+export function deleteTag(id: number) {
+  return request({ url: `/tags/${id}`, method: 'DELETE' })
+}
+
+/** 按标签统计 */
+export function getTagStats(params?: {
+  month?: string
+  period?: 'week' | 'month' | 'year'
+  type?: 'expense' | 'income'
+}) {
+  return request<TagStat[]>({ url: '/tags/stats/by-tag', data: params })
+}
diff --git a/client/src/api/transaction.ts b/client/src/api/transaction.ts
index 94b3325..41f5632 100644
--- a/client/src/api/transaction.ts
+++ b/client/src/api/transaction.ts
@@ -15,6 +15,14 @@ export interface Transaction {
   group_id?: number | null
   creator_nickname?: string
   creator_avatar?: string
+  tags?: TagItem[]
+}
+
+/** 标签简略信息 */
+export interface TagItem {
+  id: number
+  name: string
+  color: string
 }
 
 /** 交易列表响应 */
@@ -40,6 +48,7 @@ export interface TransactionParams {
   minAmount?: number
   maxAmount?: number
   keyword?: string
+  tagId?: number
 }
 
 /** 获取交易列表 */
@@ -60,6 +69,7 @@ export function createTransaction(data: {
   note?: string
   date: string
   group_id?: number | null
+  tagIds?: number[]
 }) {
   return request<{ id: number }>({ url: '/transactions', method: 'POST', data })
 }
@@ -71,6 +81,7 @@ export function updateTransaction(id: number, data: {
   category_id?: number
   note?: string
   date: string
+  tagIds?: number[]
 }) {
   return request({ url: `/transactions/${id}`, method: 'PUT', data })
 }
@@ -79,3 +90,16 @@ export function updateTransaction(id: number, data: {
 export function deleteTransaction(id: number) {
   return request({ url: `/transactions/${id}`, method: 'DELETE' })
 }
+
+/** 导入交易记录 */
+export function importTransactions(data: {
+  transactions: Array<{
+    date: string
+    type: 'expense' | 'income'
+    category_name: string
+    amount: number
+    note?: string
+  }>
+}) {
+  return request<{ imported: number; skipped: number }>({ url: '/transactions/import', method: 'POST', data })
+}
diff --git a/client/src/components/DragSortList/DragSortList.vue b/client/src/components/DragSortList/DragSortList.vue
new file mode 100644
index 0000000..d6a682e
--- /dev/null
+++ b/client/src/components/DragSortList/DragSortList.vue
@@ -0,0 +1,144 @@
+<template>
+  <view class="drag-sort-list">
+    <movable-area class="drag-area">
+      <movable-view
+        v-for="(item, index) in list"
+        :key="itemKey ? item[itemKey] : index"
+        class="drag-item"
+        :class="{ dragging: dragIndex === index }"
+        direction="vertical"
+        :y="positions[index] || 0"
+        :damping="40"
+        :disabled="disabled"
+        @touchstart="onDragStart(index)"
+        @change="onChange(index, $event)"
+        @touchend="onDragEnd(index)"
+      >
+        <view class="drag-handle" v-if="!disabled">
+          <Icon name="dragHandle" :size="28" color="#BFB3B3" />
+        </view>
+        <slot name="item" :item="item" :index="index">
+          <text class="drag-default-text">{{ item[itemKey] || item }}</text>
+        </slot>
+      </movable-view>
+    </movable-area>
+  </view>
+</template>
+
+<script setup lang="ts">
+import { ref, watch, nextTick } from 'vue'
+import Icon from '@/components/Icon/Icon.vue'
+
+const props = withDefaults(defineProps<{
+  list: any[]
+  itemKey?: string
+  disabled?: boolean
+  itemHeight?: number
+}>(), {
+  disabled: false,
+  itemHeight: 56
+})
+
+const emit = defineEmits<{
+  (e: 'sort', newOrder: any[]): void
+}>()
+
+/** 每个 item 的 y 坐标 */
+const positions = ref<number[]>([])
+/** 当前正在拖拽的 index */
+const dragIndex = ref<number | null>(null)
+/** 拖拽起始 y */
+let startY = 0
+/** 当前排序列表 */
+const sortedList = ref<any[]>([])
+
+watch(() => props.list, (newList) => {
+  sortedList.value = [...newList]
+  recalcPositions()
+}, { immediate: true, deep: true })
+
+function recalcPositions() {
+  const pos: number[] = []
+  for (let i = 0; i < sortedList.value.length; i++) {
+    pos.push(i * props.itemHeight)
+  }
+  positions.value = pos
+}
+
+function onDragStart(index: number) {
+  dragIndex.value = index
+  startY = positions.value[index] || 0
+}
+
+function onChange(index: number, e: any) {
+  if (e.detail.source !== 'touch') return
+  const newY = e.detail.y
+  const currentPos = index * props.itemHeight
+  const delta = newY - currentPos
+  const swapThreshold = props.itemHeight * 0.5
+
+  if (Math.abs(delta) > swapThreshold) {
+    const direction = delta > 0 ? 1 : -1
+    const swapIndex = index + direction
+    if (swapIndex < 0 || swapIndex >= sortedList.value.length) return
+
+    // 交换元素
+    const newList = [...sortedList.value]
+    const temp = newList[index]
+    newList[index] = newList[swapIndex]
+    newList[swapIndex] = temp
+    sortedList.value = newList
+    recalcPositions()
+    emit('sort', newList)
+  }
+}
+
+function onDragEnd(index: number) {
+  dragIndex.value = null
+}
+</script>
+
+<style lang="scss" scoped>
+.drag-sort-list {
+  width: 100%;
+}
+
+.drag-area {
+  width: 100%;
+  height: auto;
+  min-height: 200rpx;
+}
+
+.drag-item {
+  width: 100%;
+  display: flex;
+  align-items: center;
+  background: $surface;
+  border-radius: $radius-lg;
+  border: 2rpx solid $border;
+  margin-bottom: $space-xs;
+  transition: box-shadow $transition-normal;
+
+  &.dragging {
+    box-shadow: $shadow-lg;
+    opacity: 0.9;
+    z-index: 10;
+  }
+}
+
+.drag-handle {
+  width: 64rpx;
+  height: 64rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  &:active { opacity: 0.6; }
+}
+
+.drag-default-text {
+  font-size: $font-lg;
+  color: $text;
+  flex: 1;
+}
+</style>
diff --git a/client/src/components/Icon/Icon.vue b/client/src/components/Icon/Icon.vue
index e45e62c..0fb9196 100644
--- a/client/src/components/Icon/Icon.vue
+++ b/client/src/components/Icon/Icon.vue
@@ -50,6 +50,7 @@ const iconMap: Record<string, Record<string, string>> = {
   },
   check: {
     '#FFFFFF': '/static/icons/check-white.png',
+    '#FF8C69': '/static/icons/check-orange.png',
   },
   trash: {
     '#FF8C69': '/static/icons/trash-orange.png',
@@ -71,6 +72,25 @@ const iconMap: Record<string, Record<string, string>> = {
     '#8B7E7E': '/static/icons/settings-gray.png',
     '#FF8C69': '/static/icons/settings-orange.png',
   },
+  tag: {
+    '#8B7E7E': '/static/icons/tag-gray.png',
+    '#FF8C69': '/static/icons/tag-orange.png',
+    '#BFB3B3': '/static/icons/tag-light.png',
+  },
+  archive: {
+    '#7BC67E': '/static/icons/archive-green.png',
+    '#BFB3B3': '/static/icons/archive-light.png',
+  },
+  download: {
+    '#5B9BD5': '/static/icons/download-blue.png',
+  },
+  upload: {
+    '#FF8C69': '/static/icons/upload-orange.png',
+  },
+  dragHandle: {
+    '#BFB3B3': '/static/icons/drag-handle-light.png',
+    '#8B7E7E': '/static/icons/drag-handle-gray.png',
+  },
 }
 
 const iconSrc = computed(() => {
diff --git a/client/src/pages.json b/client/src/pages.json
index c9c900b..127e861 100644
--- a/client/src/pages.json
+++ b/client/src/pages.json
@@ -154,6 +154,29 @@
         "navigationBarTitleText": "埋点统计",
         "enablePullDownRefresh": true
       }
+    },
+    {
+      "path": "pages/tag-manage/index",
+      "style": {
+        "navigationStyle": "custom",
+        "navigationBarTitleText": "标签管理",
+        "enablePullDownRefresh": true
+      }
+    },
+    {
+      "path": "pages/backup-manage/index",
+      "style": {
+        "navigationStyle": "custom",
+        "navigationBarTitleText": "数据备份",
+        "enablePullDownRefresh": true
+      }
+    },
+    {
+      "path": "pages/data-import/index",
+      "style": {
+        "navigationStyle": "custom",
+        "navigationBarTitleText": "数据导入"
+      }
     }
   ],
   "globalStyle": {
diff --git a/client/src/pages/add/index.vue b/client/src/pages/add/index.vue
index b43d5c6..6b4bafd 100644
--- a/client/src/pages/add/index.vue
+++ b/client/src/pages/add/index.vue
@@ -53,6 +53,18 @@
         <Icon name="edit" :size="28" color="#8B7E7E" />
         <input class="extra-input" v-model="note" placeholder="添加备注..." placeholder-class="placeholder" maxlength="200" @focus="blurAmountEditor" />
       </view>
+      <view class="extra-row" @tap="openTagPicker">
+        <Icon name="tag" :size="28" color="#8B7E7E" />
+        <view class="tag-display">
+          <text class="extra-text" v-if="selectedTagIds.length === 0">选择标签（选填）</text>
+          <view class="tag-chips" v-else>
+            <view v-for="tId in selectedTagIds" :key="tId" class="tag-chip" :style="{ background: (getTagById(tId)?.color || '#FF8C69') + '20', color: getTagById(tId)?.color || '#FF8C69' }">
+              <text class="tag-chip-text">{{ getTagById(tId)?.name || '' }}</text>
+            </view>
+          </view>
+        </view>
+        <Icon name="chevronRight" :size="24" color="#BFB3B3" />
+      </view>
     </view>
 
 
@@ -64,6 +76,33 @@
       @continue="onContinue"
       @back="onBack"
     />
+
+    <!-- 标签选择弹窗 -->
+    <view class="modal-mask" v-if="showTagPicker" @tap="showTagPicker = false">
+      <view class="tag-modal" @tap.stop>
+        <text class="tag-modal-title">选择标签</text>
+        <text class="tag-modal-hint">最多选择 5 个标签</text>
+        <scroll-view class="tag-modal-list" scroll-y>
+          <view
+            v-for="tag in tagStore.tags"
+            :key="tag.id"
+            class="tag-option"
+            :class="{ selected: selectedTagIds.includes(tag.id) }"
+            @tap="toggleTag(tag.id)"
+          >
+            <view class="tag-option-dot" :style="{ background: tag.color }"></view>
+            <text class="tag-option-name">{{ tag.name }}</text>
+            <Icon v-if="selectedTagIds.includes(tag.id)" name="check" :size="24" color="#FF8C69" />
+          </view>
+          <view class="tag-empty" v-if="tagStore.tags.length === 0">
+            <text class="tag-empty-text">暂无标签，可在"我的-标签管理"中添加</text>
+          </view>
+        </scroll-view>
+        <view class="tag-modal-btns">
+          <view class="tag-modal-btn" @tap="showTagPicker = false">确定</view>
+        </view>
+      </view>
+    </view>
   </view>
 </template>
 
@@ -72,6 +111,7 @@ import { ref, computed, watch, onMounted, nextTick } from 'vue'
 import { onShow } from '@dcloudio/uni-app'
 import { useCategoryStore } from '@/stores/category'
 import { useTransactionStore } from '@/stores/transaction'
+import { useTagStore } from '@/stores/tag'
 import { waitForReady } from '@/utils/app-ready'
 import { suggestCategory } from '@/api/stats'
 import AmountEditor from '@/components/AmountEditor/AmountEditor.vue'
@@ -82,11 +122,14 @@ import { statusBarHeight, capsuleRight } from '@/utils/system'
 
 const catStore = useCategoryStore()
 const txStore = useTransactionStore()
+const tagStore = useTagStore()
 
 const type = ref<'expense' | 'income'>('expense')
 const amountStr = ref('0')
 const selectedCat = ref<number | null>(null)
 const note = ref('')
+const selectedTagIds = ref<number[]>([])
+const showTagPicker = ref(false)
 const suggestedCatId = ref<number | null>(null)
 const suggestConfidence = ref(0)
 let suggestTimer: ReturnType<typeof setTimeout> | null = null
@@ -173,6 +216,13 @@ onMounted(async () => {
     }
   }
 
+  // 加载标签列表
+  try {
+    await tagStore.fetchTags()
+  } catch {
+    // 标签加载失败不影响主流程
+  }
+
   const pages = getCurrentPages()
   const page = pages[pages.length - 1] as { options?: Record<string, string> }
   if (page?.options?.type && ['expense', 'income'].includes(page.options.type)) {
@@ -192,6 +242,7 @@ onMounted(async () => {
       lastCatByType[existing.type] = existing.category_id
       note.value = existing.note || ''
       selectedDate.value = existing.date.slice(0, 10)
+      selectedTagIds.value = existing.tags?.map(t => t.id) || []
       // 等待分类列表渲染完成后滚动到选中项
       nextTick(() => {
         setTimeout(() => { scrollToCat.value = 'cat-' + existing.category_id }, 200)
@@ -211,7 +262,10 @@ onMounted(async () => {
 // 返回页面时刷新分类（可能新增了分类）
 const initialLoaded = ref(false)
 onShow(() => {
-  if (initialLoaded.value) catStore.fetchCategories()
+  if (initialLoaded.value) {
+    catStore.fetchCategories()
+    tagStore.fetchTags()
+  }
 })
 
 function onDateChange(e: any) {
@@ -241,7 +295,8 @@ async function save() {
       type: type.value,
       category_id: selectedCat.value,
       note: note.value,
-      date: selectedDate.value
+      date: selectedDate.value,
+      ...(selectedTagIds.value.length > 0 ? { tagIds: selectedTagIds.value } : {})
     }
     if (editId.value) {
       await txStore.updateTransaction(editId.value, data)
@@ -265,6 +320,7 @@ function onContinue() {
   // 重置表单，保留分类和日期
   amountStr.value = ''
   note.value = ''
+  selectedTagIds.value = []
   showSuccess.value = false
   nextTick(() => amountEditorRef.value?.focus())
 }
@@ -274,6 +330,28 @@ function onBack() {
   uni.navigateBack()
 }
 
+function openTagPicker() {
+  blurAmountEditor()
+  showTagPicker.value = true
+}
+
+function toggleTag(tagId: number) {
+  const idx = selectedTagIds.value.indexOf(tagId)
+  if (idx >= 0) {
+    selectedTagIds.value = selectedTagIds.value.filter(id => id !== tagId)
+  } else {
+    if (selectedTagIds.value.length >= 5) {
+      uni.showToast({ title: '最多选择 5 个标签', icon: 'none' })
+      return
+    }
+    selectedTagIds.value = [...selectedTagIds.value, tagId]
+  }
+}
+
+function getTagById(id: number) {
+  return tagStore.getById(id)
+}
+
 function goBack() {
   // 保存成功后直接返回，不弹确认框
   if (showSuccess.value) return
@@ -461,6 +539,99 @@ function goBack() {
 
 .placeholder { color: $text-muted; }
 
+.tag-display {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  min-width: 0;
+}
+
+.tag-chips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8rpx;
+}
+
+.tag-chip {
+  padding: 4rpx 16rpx;
+  border-radius: $radius-xs;
+}
+
+.tag-chip-text {
+  font-size: $font-sm;
+  font-weight: 500;
+}
+
+/* 标签选择弹窗 */
+.modal-mask {
+  @include modal-mask;
+}
+
+.tag-modal {
+  @include bottom-modal;
+  padding-bottom: calc($space-xl + env(safe-area-inset-bottom));
+}
+
+.tag-modal-title {
+  @include modal-title;
+  text-align: left;
+  padding: $space-lg $space-xl $space-xs;
+}
+
+.tag-modal-hint {
+  font-size: $font-sm;
+  color: $text-muted;
+  padding: 0 $space-xl $space-md;
+}
+
+.tag-modal-list {
+  max-height: 500rpx;
+  padding: 0 $space-xl;
+}
+
+.tag-option {
+  display: flex;
+  align-items: center;
+  gap: $space-sm;
+  padding: $space-md 0;
+  border-bottom: 1rpx solid $border;
+
+  &:last-child { border-bottom: none; }
+  &:active { background: $surface-warm; }
+}
+
+.tag-option-dot {
+  width: 24rpx;
+  height: 24rpx;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.tag-option-name {
+  flex: 1;
+  font-size: $font-lg;
+  color: $text;
+}
+
+.tag-empty {
+  padding: $space-2xl 0;
+  text-align: center;
+}
+
+.tag-empty-text {
+  font-size: $font-md;
+  color: $text-muted;
+}
+
+.tag-modal-btns {
+  padding: $space-md $space-xl;
+  border-top: 2rpx solid $border;
+}
+
+.tag-modal-btn {
+  @include btn-primary;
+  width: 100%;
+}
 
 
 </style>
diff --git a/client/src/pages/admin/index.vue b/client/src/pages/admin/index.vue
index 0e948d7..ec63dae 100644
--- a/client/src/pages/admin/index.vue
+++ b/client/src/pages/admin/index.vue
@@ -59,6 +59,29 @@
         </view>
       </view>
 
+      <!-- 健康状态 -->
+      <view class="health-card" v-if="health">
+        <view class="health-header">
+          <text class="health-title">系统状态</text>
+          <view class="health-badge" :class="health.status">
+            <view class="health-dot"></view>
+            <text class="health-badge-text">{{ health.status === 'ok' ? '正常' : health.status === 'degraded' ? '降级' : '异常' }}</text>
+          </view>
+        </view>
+        <view class="detail-row">
+          <text class="detail-label">数据库</text>
+          <text class="detail-value" :class="health.db === 'connected' ? 'income' : 'expense'">{{ health.db === 'connected' ? '已连接' : '断开' }}</text>
+        </view>
+        <view class="detail-row">
+          <text class="detail-label">运行时间</text>
+          <text class="detail-value">{{ formatUptime(health.uptime) }}</text>
+        </view>
+        <view class="detail-row">
+          <text class="detail-label">版本</text>
+          <text class="detail-value">{{ health.version }}</text>
+        </view>
+      </view>
+
       <!-- 功能入口 -->
       <view class="section-title">管理功能</view>
       <view class="entry-list">
@@ -103,12 +126,15 @@ import { onShow, onPullDownRefresh } from '@dcloudio/uni-app'
 import { waitForReady } from '@/utils/app-ready'
 import { statusBarHeight } from '@/utils/system'
 import { getDashboard } from '@/api/admin'
+import { getHealth } from '@/api/health'
+import type { HealthStatus } from '@/api/health'
 import { formatAmount } from '@/utils/format'
 import Icon from '@/components/Icon/Icon.vue'
 import type { Dashboard } from '@/api/admin'
 
 const loading = ref(true)
 const dashboard = ref<Dashboard | null>(null)
+const health = ref<HealthStatus | null>(null)
 
 onMounted(async () => {
   await waitForReady()
@@ -120,12 +146,20 @@ onMounted(async () => {
   } finally {
     loading.value = false
   }
+
+  // 加载健康状态（不阻塞页面）
+  try {
+    health.value = await getHealth()
+  } catch {
+    // 健康检查失败不影响主流程
+  }
 })
 
 // 静默刷新
 async function refreshDashboard() {
   try {
     dashboard.value = await getDashboard()
+    health.value = await getHealth()
   } catch {}
 }
 
@@ -146,6 +180,16 @@ function goFeedbackManage() { uni.navigateTo({ url: '/pages/admin/feedback' }) }
 function goConfig() { uni.navigateTo({ url: '/pages/admin/config' }) }
 function goLogs() { uni.navigateTo({ url: '/pages/admin/logs' }) }
 function goTrack() { uni.navigateTo({ url: '/pages/admin/track' }) }
+
+function formatUptime(seconds: number): string {
+  if (!seconds) return '-'
+  const days = Math.floor(seconds / 86400)
+  const hours = Math.floor((seconds % 86400) / 3600)
+  const mins = Math.floor((seconds % 3600) / 60)
+  if (days > 0) return `${days}天${hours}小时`
+  if (hours > 0) return `${hours}小时${mins}分`
+  return `${mins}分钟`
+}
 </script>
 
 <style lang="scss" scoped>
@@ -299,4 +343,58 @@ function goTrack() { uni.navigateTo({ url: '/pages/admin/track' }) }
   font-weight: 500;
   color: $text;
 }
+
+/* 健康状态卡片 */
+.health-card {
+  background: $surface;
+  border-radius: $radius-xl;
+  padding: $space-lg;
+  border: 2rpx solid $border;
+  box-shadow: $shadow-md;
+  margin-bottom: $space-lg;
+}
+
+.health-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: $space-md;
+}
+
+.health-title {
+  font-size: $font-lg;
+  font-weight: 600;
+  color: $text;
+}
+
+.health-badge {
+  display: flex;
+  align-items: center;
+  gap: $space-xs;
+  padding: 4rpx 16rpx;
+  border-radius: $radius-lg;
+
+  &.ok { background: rgba(123, 198, 126, 0.1); }
+  &.degraded { background: rgba(255, 215, 0, 0.1); }
+  &.error { background: rgba(255, 107, 107, 0.1); }
+}
+
+.health-dot {
+  width: 16rpx;
+  height: 16rpx;
+  border-radius: 50%;
+
+  .ok & { background: $success; }
+  .degraded & { background: #FFD700; }
+  .error & { background: $danger; }
+}
+
+.health-badge-text {
+  font-size: $font-sm;
+  font-weight: 500;
+
+  .ok & { color: $success; }
+  .degraded & { color: #CC9900; }
+  .error & { color: $danger; }
+}
 </style>
diff --git a/client/src/pages/backup-manage/index.vue b/client/src/pages/backup-manage/index.vue
new file mode 100644
index 0000000..f0d14e5
--- /dev/null
+++ b/client/src/pages/backup-manage/index.vue
@@ -0,0 +1,301 @@
+<template>
+  <view class="page">
+    <view class="header-fixed">
+      <view class="status-bar" :style="{ height: statusBarHeight + 'px' }"></view>
+      <view class="nav-bar">
+        <view class="nav-back" @tap="goBack">
+          <Icon name="arrowLeft" :size="36" color="#2D1B1B" />
+        </view>
+        <text class="nav-title">数据备份</text>
+        <view class="nav-placeholder"></view>
+      </view>
+    </view>
+
+    <view class="action-bar">
+      <view class="create-btn" :class="{ disabled: creating }" @tap="onCreate">
+        <Icon name="plus" :size="28" color="#FFFFFF" />
+        <text class="create-text">{{ creating ? '创建中...' : '创建备份' }}</text>
+      </view>
+    </view>
+
+    <view class="backup-list" v-if="backups.length > 0">
+      <view v-for="item in backups" :key="item.id" class="backup-item">
+        <view class="bk-info">
+          <view class="bk-name-row">
+            <Icon name="archive" :size="28" :color="item.status === 'completed' ? '#7BC67E' : '#BFB3B3'" />
+            <text class="bk-name">{{ item.name }}</text>
+          </view>
+          <text class="bk-meta">{{ formatDate(item.created_at) }} · {{ formatSize(item.size) }}</text>
+          <text class="bk-status" :class="item.status">
+            {{ item.status === 'completed' ? '已完成' : item.status === 'pending' ? '处理中' : '失败' }}
+          </text>
+        </view>
+        <view class="bk-actions" v-if="item.status === 'completed'">
+          <view class="bk-btn download" @tap="onDownload(item)">
+            <Icon name="download" :size="24" color="#5B9BD5" />
+          </view>
+          <view class="bk-btn delete" @tap="onDelete(item)">
+            <Icon name="trash" :size="24" color="#FF6B6B" />
+          </view>
+        </view>
+      </view>
+    </view>
+
+    <view class="empty" v-else-if="!loading">
+      <Icon name="archive" :size="48" color="#BFB3B3" />
+      <text class="empty-text">暂无备份记录</text>
+    </view>
+
+    <view class="loading-box" v-if="loading">
+      <text class="loading-text">加载中...</text>
+    </view>
+  </view>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { onShow, onPullDownRefresh } from '@dcloudio/uni-app'
+import { getBackups, createBackup, deleteBackup } from '@/api/backup'
+import type { Backup } from '@/api/backup'
+import { waitForReady } from '@/utils/app-ready'
+import { statusBarHeight } from '@/utils/system'
+import Icon from '@/components/Icon/Icon.vue'
+
+const backups = ref<Backup[]>([])
+const loading = ref(true)
+const creating = ref(false)
+const initialLoaded = ref(false)
+
+onMounted(async () => {
+  await waitForReady()
+  await loadBackups()
+  initialLoaded.value = true
+})
+
+onShow(() => {
+  if (initialLoaded.value) loadBackups(true)
+})
+
+onPullDownRefresh(async () => {
+  await loadBackups(true)
+  uni.stopPullDownRefresh()
+})
+
+async function loadBackups(silent = false) {
+  if (!silent) loading.value = true
+  try {
+    const data = await getBackups({ page: 1, pageSize: 50 })
+    backups.value = data.list || []
+  } catch {
+    backups.value = []
+  } finally {
+    loading.value = false
+  }
+}
+
+async function onCreate() {
+  if (creating.value) return
+  creating.value = true
+  try {
+    await createBackup()
+    uni.showToast({ title: '备份创建成功', icon: 'success' })
+    await loadBackups()
+  } catch {
+    uni.showToast({ title: '创建失败', icon: 'none' })
+  } finally {
+    creating.value = false
+  }
+}
+
+function onDownload(item: Backup) {
+  if (!item.downloadToken) {
+    uni.showToast({ title: '下载链接无效', icon: 'none' })
+    return
+  }
+  // 在新窗口打开下载链接（H5）
+  // #ifdef H5
+  const apiBase = '/api'
+  const url = `${apiBase}/backup/${item.id}/download?token=${encodeURIComponent(item.downloadToken)}`
+  window.open(url, '_blank')
+  // #endif
+
+  // #ifdef MP-WEIXIN
+  uni.downloadFile({
+    url: `https://xiaocai.j35.site/api/backup/${item.id}/download?token=${encodeURIComponent(item.downloadToken)}`,
+    success: (res) => {
+      if (res.statusCode === 200) {
+        uni.openDocument({
+          filePath: res.tempFilePath,
+          showMenu: true,
+          fail: () => uni.showToast({ title: '打开失败', icon: 'none' })
+        })
+      }
+    },
+    fail: () => uni.showToast({ title: '下载失败', icon: 'none' })
+  })
+  // #endif
+}
+
+async function onDelete(item: Backup) {
+  uni.showModal({
+    title: '删除备份',
+    content: `确定删除备份「${item.name}」？`,
+    success: async (res) => {
+      if (res.confirm) {
+        try {
+          await deleteBackup(item.id)
+          backups.value = backups.value.filter(b => b.id !== item.id)
+          uni.showToast({ title: '已删除', icon: 'success' })
+        } catch {
+          uni.showToast({ title: '删除失败', icon: 'none' })
+        }
+      }
+    }
+  })
+}
+
+function goBack() {
+  uni.navigateBack()
+}
+
+function formatDate(dateStr: string): string {
+  if (!dateStr) return ''
+  const d = new Date(dateStr)
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')} ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`
+}
+
+function formatSize(bytes: number): string {
+  if (!bytes || bytes === 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB']
+  let i = 0
+  let size = bytes
+  while (size >= 1024 && i < units.length - 1) {
+    size /= 1024
+    i++
+  }
+  return `${size.toFixed(1)} ${units[i]}`
+}
+</script>
+
+<style lang="scss" scoped>
+@import '@/styles/mixins.scss';
+
+.page {
+  @include page-base;
+}
+
+.header-fixed { @include sticky-header; }
+.status-bar { @include status-bar; }
+
+.nav-bar {
+  display: flex;
+  align-items: center;
+  padding: $space-sm $space-lg;
+}
+
+.nav-back {
+  @include nav-back;
+  border-radius: 50%;
+  &:active { background: $border; }
+}
+
+.nav-title {
+  flex: 1;
+  text-align: center;
+  font-size: $font-2xl;
+  font-weight: 600;
+  color: $text;
+}
+
+.nav-placeholder { width: 72rpx; }
+
+.action-bar {
+  padding: $space-lg $space-xl;
+}
+
+.create-btn {
+  @include btn-primary;
+  gap: $space-sm;
+  width: 100%;
+
+  &.disabled { opacity: 0.5; pointer-events: none; }
+}
+
+.create-text { @include btn-primary-text; }
+
+.backup-list { padding: 0 $space-xl; }
+
+.backup-item {
+  @include card($radius-xl);
+  padding: $space-lg;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: $space-sm;
+}
+
+.bk-info {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 6rpx;
+}
+
+.bk-name-row {
+  display: flex;
+  align-items: center;
+  gap: $space-xs;
+}
+
+.bk-name {
+  font-size: $font-lg;
+  font-weight: 500;
+  color: $text;
+}
+
+.bk-meta {
+  font-size: $font-sm;
+  color: $text-muted;
+}
+
+.bk-status {
+  font-size: $font-xs;
+  padding: 2rpx 12rpx;
+  border-radius: $radius-xs;
+  width: fit-content;
+
+  &.completed { color: $success; background: rgba(123, 198, 126, 0.1); }
+  &.pending { color: $primary; background: $primary-light; }
+  &.failed { color: $danger; background: rgba(255, 107, 107, 0.1); }
+}
+
+.bk-actions {
+  display: flex;
+  gap: $space-xs;
+}
+
+.bk-btn {
+  width: 72rpx;
+  height: 72rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  background: $bg;
+  &:active { background: $border; }
+}
+
+.empty {
+  @include state-box;
+  padding: 120rpx 0;
+}
+
+.empty-text { @include state-text; }
+
+.loading-box {
+  @include flex-center;
+  padding: 120rpx 0;
+}
+
+.loading-text { font-size: $font-lg; color: $text-muted; }
+</style>
diff --git a/client/src/pages/bills/index.vue b/client/src/pages/bills/index.vue
index 9e53571..18987ab 100644
--- a/client/src/pages/bills/index.vue
+++ b/client/src/pages/bills/index.vue
@@ -17,6 +17,25 @@
       </view>
     </view>
 
+    <!-- 标签筛选条 -->
+    <scroll-view class="tag-filter-scroll" scroll-x v-if="tagStore.tags.length > 0">
+      <view class="tag-filter-row">
+        <view class="tag-filter-chip" :class="{ active: filterTagId === null }" @tap="filterTagId = null; loadTx(true)">
+          <text class="tag-filter-text">全部标签</text>
+        </view>
+        <view
+          v-for="tag in tagStore.tags"
+          :key="tag.id"
+          class="tag-filter-chip"
+          :class="{ active: filterTagId === tag.id }"
+          @tap="filterTagId = tag.id; loadTx(true)"
+        >
+          <view class="tag-filter-dot" :style="{ background: tag.color }"></view>
+          <text class="tag-filter-text">{{ tag.name }}</text>
+        </view>
+      </view>
+    </scroll-view>
+
     <!-- 筛选结果统计 -->
     <view class="filter-stats" v-if="hasAdvancedFilter && !loading">
       <text class="filter-stats-text">共 {{ total }} 笔</text>
@@ -43,6 +62,8 @@
           :hideDate="true"
           :showCreator="groupStore.isGroupMode"
           :currentUserId="userStore.userInfo?.id"
+          :disableSwipe="groupStore.isGroupMode && item.user_id !== userStore.userInfo?.id"
+          :swipeHint="!swipeHintDismissed && isFirstDeletable(item)"
           @item-tap="onEdit(item)"
           @delete="onDelete(item)"
         />
@@ -91,6 +112,7 @@ import { ref, computed, onMounted } from 'vue'
 import { onShow, onReachBottom, onPullDownRefresh } from '@dcloudio/uni-app'
 import { useUserStore } from '@/stores/user'
 import { useGroupStore } from '@/stores/group'
+import { useTagStore } from '@/stores/tag'
 import { waitForReady } from '@/utils/app-ready'
 import { getTransactions, deleteTransaction } from '@/api/transaction'
 import TransactionItem from '@/components/TransactionItem/TransactionItem.vue'
@@ -104,8 +126,10 @@ import type { FilterParams } from '@/api/filter'
 
 const userStore = useUserStore()
 const groupStore = useGroupStore()
+const tagStore = useTagStore()
 const loading = ref(false)
 const filterType = ref('all')
+const filterTagId = ref<number | null>(null)
 const page = ref(1)
 const pageSize = 20
 const txList = ref<Transaction[]>([])
@@ -113,6 +137,35 @@ const total = ref(0)
 const loadError = ref(false)
 let loadSeq = 0 // 请求序号，防止并发覆盖
 
+// 左滑提示：只对首个可删除项显示一次，用户看过后不再重复
+const swipeHintDismissed = ref(false)
+const HINT_KEY = 'xiaocai_swipe_hint_shown'
+
+function isFirstDeletable(item: Transaction): boolean {
+  if (swipeHintDismissed.value) return false
+  // 群组模式下只有自己的记录可删除
+  if (groupStore.isGroupMode && item.user_id !== userStore.userInfo?.id) return false
+  // 找到第一个可删除的项
+  for (const group of groupedTx.value) {
+    for (const tx of group.items) {
+      if (groupStore.isGroupMode && tx.user_id !== userStore.userInfo?.id) continue
+      return tx.id === item.id
+    }
+  }
+  return false
+}
+
+// 动画播完后标记已显示
+try {
+  if (uni.getStorageSync(HINT_KEY)) {
+    swipeHintDismissed.value = true
+  }
+} catch {}
+setTimeout(() => {
+  swipeHintDismissed.value = true
+  try { uni.setStorageSync(HINT_KEY, '1') } catch {}
+}, 3000)
+
 // 高级筛选
 const showFilter = ref(false)
 const advancedFilters = ref<FilterParams>({})
@@ -145,6 +198,7 @@ const initialLoaded = ref(false)
 
 onMounted(async () => {
   await waitForReady()
+  tagStore.fetchTags().catch(() => {})
   loadTx(true).finally(() => { initialLoaded.value = true })
 })
 
@@ -174,6 +228,7 @@ async function loadTx(reset = false, silent = false) {
   if (af.minAmount) params.minAmount = af.minAmount
   if (af.maxAmount) params.maxAmount = af.maxAmount
   if (af.keyword) params.keyword = af.keyword
+  if (filterTagId.value) params.tagId = filterTagId.value
   try {
     loading.value = true
     loadError.value = false
@@ -379,4 +434,51 @@ onPullDownRefresh(() => {
 .state-text {
   @include state-text;
 }
+
+/* 标签筛选条 */
+.tag-filter-scroll {
+  white-space: nowrap;
+  padding: 0 $space-xl $space-sm;
+}
+
+.tag-filter-row {
+  display: inline-flex;
+  gap: $space-xs;
+}
+
+.tag-filter-chip {
+  display: inline-flex;
+  align-items: center;
+  gap: 8rpx;
+  padding: $space-xs $space-md;
+  background: $surface;
+  border-radius: $radius-lg;
+  border: 2rpx solid $border;
+  flex-shrink: 0;
+  transition: all $transition-normal;
+
+  &.active {
+    background: $primary-light;
+    border-color: $primary;
+  }
+
+  &:active { opacity: 0.7; }
+}
+
+.tag-filter-dot {
+  width: 16rpx;
+  height: 16rpx;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.tag-filter-text {
+  font-size: $font-sm;
+  color: $text-sec;
+
+  .active & {
+    color: $primary;
+    font-weight: 500;
+  }
+}
 </style>
diff --git a/client/src/pages/category-manage/index.vue b/client/src/pages/category-manage/index.vue
index 589f360..065475a 100644
--- a/client/src/pages/category-manage/index.vue
+++ b/client/src/pages/category-manage/index.vue
@@ -19,7 +19,10 @@
     </view>
 
     <view class="cat-list">
-      <view v-for="cat in currentCategories" :key="cat.id" class="cat-row">
+      <view v-for="cat in currentCategories" :key="cat.id" class="cat-row" :data-id="cat.id">
+        <view class="cat-drag-handle" @touchstart="onDragStart" @touchmove="onDragMove" @touchend="onDragEnd" v-if="tabType === 'expense' || tabType === 'income'">
+          <Icon name="dragHandle" :size="24" color="#BFB3B3" />
+        </view>
         <view class="cat-info" @tap="cat.is_custom && onEdit(cat)">
           <CategoryIcon :label="cat.name[0]" :color="cat.color" :bg-color="cat.color + '15'" size="sm" />
           <text class="cat-name">{{ cat.name }}</text>
@@ -126,6 +129,11 @@ const newName = ref('')
 const colorOptions = ['#FF8C69', '#7BC67E', '#5B9BD5', '#FFD700', '#FF69B4', '#8B5CF6', '#F97316', '#06B6D4']
 const selectedColor = ref(colorOptions[0])
 
+// 拖拽排序相关
+let dragStartY = 0
+let dragCurrentIndex = -1
+let dragItemEl: any = null
+
 // 编辑相关
 const showEditModal = ref(false)
 const editingCat = ref<Category | null>(null)
@@ -270,6 +278,52 @@ async function onMigrateConfirm() {
     uni.showToast({ title: '操作失败', icon: 'none' })
   }
 }
+
+/** 拖拽排序：开始 */
+function onDragStart(e: any) {
+  dragStartY = e.touches[0].clientY
+  dragItemEl = e.currentTarget?.parentElement
+  if (dragItemEl) {
+    const id = Number(dragItemEl.dataset?.id)
+    const idx = currentCategories.value.findIndex(c => c.id === id)
+    dragCurrentIndex = idx
+    dragItemEl.style?.opacity && (dragItemEl.style.opacity = '0.6')
+  }
+}
+
+/** 拖拽排序：移动 */
+function onDragMove(e: any) {
+  // 视觉反馈由 CSS transition 处理，这里仅用于阻止页面滚动
+}
+
+/** 拖拽排序：结束 */
+function onDragEnd(e: any) {
+  if (dragItemEl) {
+    dragItemEl.style?.opacity && (dragItemEl.style.opacity = '1')
+  }
+
+  const endY = e.changedTouches[0].clientY
+  const delta = endY - dragStartY
+  const threshold = 50
+
+  if (Math.abs(delta) > threshold && dragCurrentIndex >= 0) {
+    const direction = delta > 0 ? 1 : -1
+    const newIndex = dragCurrentIndex + direction
+    const cats = [...currentCategories.value]
+    if (newIndex >= 0 && newIndex < cats.length) {
+      // 交换位置
+      const temp = cats[dragCurrentIndex]
+      cats[dragCurrentIndex] = cats[newIndex]
+      cats[newIndex] = temp
+      // 保存排序
+      const sortedIds = cats.map(c => c.id)
+      catStore.sortCategories(sortedIds).catch(() => {})
+    }
+  }
+
+  dragCurrentIndex = -1
+  dragItemEl = null
+}
 </script>
 
 <style lang="scss" scoped>
@@ -337,6 +391,16 @@ async function onMigrateConfirm() {
   &:last-child { border-bottom: none; }
 }
 
+.cat-drag-handle {
+  width: 56rpx;
+  height: 56rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  &:active { opacity: 0.6; }
+}
+
 .cat-info {
   display: flex;
   align-items: center;
diff --git a/client/src/pages/data-import/index.vue b/client/src/pages/data-import/index.vue
new file mode 100644
index 0000000..4a2ca64
--- /dev/null
+++ b/client/src/pages/data-import/index.vue
@@ -0,0 +1,343 @@
+<template>
+  <view class="page">
+    <view class="header-fixed">
+      <view class="status-bar" :style="{ height: statusBarHeight + 'px' }"></view>
+      <view class="nav-bar">
+        <view class="nav-back" @tap="goBack">
+          <Icon name="arrowLeft" :size="36" color="#2D1B1B" />
+        </view>
+        <text class="nav-title">数据导入</text>
+        <view class="nav-placeholder"></view>
+      </view>
+    </view>
+
+    <view class="content">
+      <view class="section">
+        <text class="section-title">选择文件</text>
+        <text class="section-desc">支持 CSV、JSON 格式，文件需小于 5MB</text>
+        <view class="file-picker" @tap="onPickFile">
+          <Icon name="upload" :size="48" color="#FF8C69" />
+          <text class="file-picker-text">{{ fileName || '点击选择文件' }}</text>
+        </view>
+      </view>
+
+      <view class="section" v-if="fileName">
+        <text class="section-title">文件预览</text>
+        <text class="preview-info">格式：{{ fileFormat?.toUpperCase() }} · 大小：{{ fileSize }}</text>
+        <text class="preview-info">识别到 {{ parsedCount }} 条记录</text>
+      </view>
+
+      <view class="section" v-if="importResult">
+        <text class="section-title">导入结果</text>
+        <view class="result-card">
+          <view class="result-row">
+            <text class="result-label">成功导入</text>
+            <text class="result-value success">{{ importResult.imported }} 条</text>
+          </view>
+          <view class="result-row">
+            <text class="result-label">跳过</text>
+            <text class="result-value warn">{{ importResult.skipped }} 条</text>
+          </view>
+        </view>
+      </view>
+
+      <view class="action-area" v-if="fileName && !importResult">
+        <view class="import-btn" :class="{ disabled: importing || parsedCount === 0 }" @tap="onImport">
+          <text class="import-text">{{ importing ? '导入中...' : '开始导入' }}</text>
+        </view>
+      </view>
+    </view>
+  </view>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import { statusBarHeight } from '@/utils/system'
+import { importTransactions } from '@/api/transaction'
+import Icon from '@/components/Icon/Icon.vue'
+
+const fileName = ref('')
+const fileSize = ref('')
+const fileFormat = ref<'csv' | 'json' | null>(null)
+const parsedCount = ref(0)
+const parsedData = ref<Array<{
+  date: string
+  type: 'expense' | 'income'
+  category_name: string
+  amount: number
+  note?: string
+}>>([])
+const importing = ref(false)
+const importResult = ref<{ imported: number; skipped: number } | null>(null)
+
+function goBack() {
+  uni.navigateBack()
+}
+
+function onPickFile() {
+  // #ifdef H5
+  const input = document.createElement('input')
+  input.type = 'file'
+  input.accept = '.csv,.json'
+  input.onchange = (e: Event) => {
+    const file = (e.target as HTMLInputElement).files?.[0]
+    if (!file) return
+    handleFile(file)
+  }
+  input.click()
+  // #endif
+
+  // #ifdef MP-WEIXIN
+  uni.chooseMessageFile({
+    count: 1,
+    type: 'file',
+    extension: ['.csv', '.json'],
+    success: (res) => {
+      const file = res.tempFiles[0]
+      fileName.value = file.name
+      fileSize.value = formatFileSize(file.size)
+      fileFormat.value = file.name.endsWith('.json') ? 'json' : 'csv'
+
+      // 读取文件内容
+      const fs = uni.getFileSystemManager()
+      try {
+        const content = fs.readFileSync(file.path, 'utf-8') as string
+        parseContent(content, fileFormat.value!)
+      } catch {
+        uni.showToast({ title: '文件读取失败', icon: 'none' })
+      }
+    }
+  })
+  // #endif
+}
+
+function handleFile(file: File) {
+  fileName.value = file.name
+  fileSize.value = formatFileSize(file.size)
+  fileFormat.value = file.name.endsWith('.json') ? 'json' : 'csv'
+
+  // 检查大小
+  if (file.size > 5 * 1024 * 1024) {
+    uni.showToast({ title: '文件不能超过 5MB', icon: 'none' })
+    return
+  }
+
+  const reader = new FileReader()
+  reader.onload = (e) => {
+    const content = e.target?.result as string
+    parseContent(content, fileFormat.value!)
+  }
+  reader.readAsText(file, 'utf-8')
+}
+
+function parseContent(content: string, format: 'csv' | 'json') {
+  try {
+    importResult.value = null
+
+    if (format === 'json') {
+      const items = JSON.parse(content)
+      if (!Array.isArray(items)) {
+        uni.showToast({ title: 'JSON 需为数组格式', icon: 'none' })
+        return
+      }
+      parsedData.value = items.map((item: any) => ({
+        date: item.date || item.日期 || '',
+        type: (item.type === '收入' || item.type === 'income') ? 'income' as const : 'expense' as const,
+        category_name: item.category || item.category_name || item.分类 || '未分类',
+        amount: Math.round((Number(item.amount || item.金额 || 0)) * 100),
+        note: item.note || item.备注 || ''
+      })).filter((item: any) => item.date && item.amount > 0)
+    } else {
+      // CSV 解析
+      const lines = content.replace(/^\uFEFF/, '').split('\n').filter(line => line.trim())
+      if (lines.length < 2) {
+        uni.showToast({ title: 'CSV 文件为空', icon: 'none' })
+        return
+      }
+      // 跳过表头
+      parsedData.value = lines.slice(1).map(line => {
+        const parts = parseCsvLine(line)
+        return {
+          date: (parts[0] || '').trim(),
+          type: (parts[1] || '').includes('收入') ? 'income' as const : 'expense' as const,
+          category_name: (parts[2] || '未分类').trim(),
+          amount: Math.round(parseFloat((parts[3] || '0').replace(/,/g, '')) * 100),
+          note: (parts[4] || '').trim()
+        }
+      }).filter(item => item.date && item.amount > 0)
+    }
+
+    parsedCount.value = parsedData.value.length
+  } catch {
+    uni.showToast({ title: '文件解析失败', icon: 'none' })
+    parsedData.value = []
+    parsedCount.value = 0
+  }
+}
+
+function parseCsvLine(line: string): string[] {
+  const result: string[] = []
+  let current = ''
+  let inQuotes = false
+
+  for (let i = 0; i < line.length; i++) {
+    const char = line[i]
+    if (char === '"') {
+      if (inQuotes && line[i + 1] === '"') {
+        current += '"'
+        i++
+      } else {
+        inQuotes = !inQuotes
+      }
+    } else if (char === ',' && !inQuotes) {
+      result.push(current)
+      current = ''
+    } else {
+      current += char
+    }
+  }
+  result.push(current)
+  return result
+}
+
+async function onImport() {
+  if (importing.value || parsedCount.value === 0) return
+
+  importing.value = true
+  try {
+    const result = await importTransactions({ transactions: parsedData.value })
+    importResult.value = result
+    uni.showToast({ title: '导入完成', icon: 'success' })
+  } catch (e: any) {
+    uni.showToast({ title: e.message || '导入失败', icon: 'none' })
+  } finally {
+    importing.value = false
+  }
+}
+
+function formatFileSize(bytes: number): string {
+  if (bytes === 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB']
+  let i = 0
+  let size = bytes
+  while (size >= 1024 && i < units.length - 1) {
+    size /= 1024
+    i++
+  }
+  return `${size.toFixed(1)} ${units[i]}`
+}
+</script>
+
+<style lang="scss" scoped>
+@import '@/styles/mixins.scss';
+
+.page {
+  @include page-base;
+}
+
+.header-fixed { @include sticky-header; }
+.status-bar { @include status-bar; }
+
+.nav-bar {
+  display: flex;
+  align-items: center;
+  padding: $space-sm $space-lg;
+}
+
+.nav-back {
+  @include nav-back;
+  border-radius: 50%;
+  &:active { background: $border; }
+}
+
+.nav-title {
+  flex: 1;
+  text-align: center;
+  font-size: $font-2xl;
+  font-weight: 600;
+  color: $text;
+}
+
+.nav-placeholder { width: 72rpx; }
+
+.content {
+  padding: $space-xl;
+}
+
+.section {
+  margin-bottom: $space-2xl;
+}
+
+.section-title {
+  font-size: $font-lg;
+  font-weight: 600;
+  color: $text;
+  display: block;
+  margin-bottom: $space-xs;
+}
+
+.section-desc {
+  font-size: $font-md;
+  color: $text-muted;
+  display: block;
+  margin-bottom: $space-md;
+}
+
+.file-picker {
+  @include card($radius-2xl);
+  padding: $space-2xl;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: $space-md;
+  &:active { background: $surface-warm; }
+}
+
+.file-picker-text {
+  font-size: $font-lg;
+  color: $text-sec;
+}
+
+.preview-info {
+  font-size: $font-md;
+  color: $text-sec;
+  display: block;
+  margin-bottom: $space-xs;
+}
+
+.result-card {
+  @include card($radius-xl);
+  padding: $space-lg;
+}
+
+.result-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: $space-sm 0;
+  border-bottom: 2rpx solid $border;
+  &:last-child { border-bottom: none; }
+}
+
+.result-label { font-size: $font-lg; color: $text-sec; }
+
+.result-value {
+  font-size: $font-lg;
+  font-weight: 600;
+
+  &.success { color: $success; }
+  &.warn { color: $primary; }
+}
+
+.action-area {
+  padding-top: $space-md;
+}
+
+.import-btn {
+  @include btn-primary;
+  width: 100%;
+  &.disabled { opacity: 0.5; pointer-events: none; }
+}
+
+.import-text { @include btn-primary-text; }
+</style>
diff --git a/client/src/pages/feedback/index.vue b/client/src/pages/feedback/index.vue
index 4c692c5..91dfb53 100644
--- a/client/src/pages/feedback/index.vue
+++ b/client/src/pages/feedback/index.vue
@@ -11,7 +11,15 @@
       </view>
     </view>
 
-    <view class="content">
+    <view class="tabs-wrap">
+      <view class="tabs">
+        <view class="tab" :class="{ active: currentTab === 'submit' }" @tap="currentTab = 'submit'">提交反馈</view>
+        <view class="tab" :class="{ active: currentTab === 'mine' }" @tap="currentTab = 'mine'">我的反馈</view>
+      </view>
+    </view>
+
+    <!-- 提交反馈 Tab -->
+    <view class="content" v-if="currentTab === 'submit'">
       <!-- 反馈类型 -->
       <view class="section">
         <text class="label">反馈类型</text>
@@ -59,13 +67,45 @@
 
       <text class="tip">感谢您的反馈，我们会认真处理每一条意见</text>
     </view>
+
+    <!-- 我的反馈 Tab -->
+    <view class="mine-content" v-if="currentTab === 'mine'">
+      <view class="feedback-list" v-if="myFeedbacks.length > 0">
+        <view v-for="item in myFeedbacks" :key="item.id" class="fb-item">
+          <view class="fb-header">
+            <text class="fb-type">{{ getTypeLabel(item.type) }}</text>
+            <text class="fb-status" :class="item.status">{{ getStatusText(item.status) }}</text>
+          </view>
+          <text class="fb-content">{{ item.content }}</text>
+          <text class="fb-date">{{ formatDateStr(item.created_at) }}</text>
+          <view class="fb-reply" v-if="item.admin_reply">
+            <text class="fb-reply-label">管理员回复：</text>
+            <text class="fb-reply-text">{{ item.admin_reply }}</text>
+          </view>
+        </view>
+      </view>
+
+      <view class="empty" v-else-if="!mineLoading">
+        <Icon name="edit" :size="48" color="#BFB3B3" />
+        <text class="empty-text">暂无反馈记录</text>
+      </view>
+
+      <view class="loading-box" v-if="mineLoading">
+        <text class="loading-text">加载中...</text>
+      </view>
+
+      <view class="load-more" v-if="!mineLoading && myFeedbacks.length > 0 && !mineNoMore" @tap="loadMoreFeedbacks">
+        <text class="load-more-text">加载更多</text>
+      </view>
+    </view>
   </view>
 </template>
 
 <script setup lang="ts">
-import { ref, reactive } from 'vue'
+import { ref, reactive, onMounted, watch } from 'vue'
 import { statusBarHeight } from '@/utils/system'
-import { submitFeedback } from '@/api/feedback'
+import { submitFeedback, getMyFeedbacks } from '@/api/feedback'
+import type { MyFeedback } from '@/api/feedback'
 import Icon from '@/components/Icon/Icon.vue'
 
 const types = [
@@ -75,6 +115,7 @@ const types = [
   { label: '其他', value: 'other' }
 ]
 
+const currentTab = ref<'submit' | 'mine'>('submit')
 const form = reactive({
   type: 'bug',
   content: '',
@@ -83,6 +124,50 @@ const form = reactive({
 
 const submitting = ref(false)
 
+// 我的反馈列表
+const myFeedbacks = ref<MyFeedback[]>([])
+const mineLoading = ref(false)
+const minePage = ref(1)
+const mineTotal = ref(0)
+const mineNoMore = ref(false)
+
+// 切换到我的反馈 tab 时加载数据
+watch(currentTab, (tab) => {
+  if (tab === 'mine' && myFeedbacks.value.length === 0) {
+    loadMyFeedbacks(true)
+  }
+})
+
+async function loadMyFeedbacks(reset = false) {
+  if (mineLoading.value) return
+  if (reset) {
+    minePage.value = 1
+    myFeedbacks.value = []
+    mineNoMore.value = false
+  }
+  mineLoading.value = true
+  try {
+    const data = await getMyFeedbacks({ page: minePage.value, pageSize: 20 })
+    const list = data.list || []
+    if (reset) {
+      myFeedbacks.value = list
+    } else {
+      myFeedbacks.value = [...myFeedbacks.value, ...list]
+    }
+    mineTotal.value = data.total
+    mineNoMore.value = myFeedbacks.value.length >= data.total
+  } catch {
+    // 静默处理
+  } finally {
+    mineLoading.value = false
+  }
+}
+
+function loadMoreFeedbacks() {
+  minePage.value++
+  loadMyFeedbacks()
+}
+
 async function onSubmit() {
   if (submitting.value || !form.content.trim()) return
 
@@ -94,7 +179,12 @@ async function onSubmit() {
       contact: form.contact.trim() || undefined
     })
     uni.showToast({ title: '提交成功', icon: 'success' })
-    setTimeout(() => uni.navigateBack(), 1500)
+    form.content = ''
+    form.contact = ''
+    // 刷新我的反馈列表
+    if (currentTab.value === 'mine') {
+      loadMyFeedbacks(true)
+    }
   } catch (e: any) {
     uni.showToast({ title: e.message || '提交失败', icon: 'none' })
   } finally {
@@ -105,6 +195,22 @@ async function onSubmit() {
 function goBack() {
   uni.navigateBack()
 }
+
+function getTypeLabel(type: string): string {
+  const map: Record<string, string> = { bug: '功能异常', feature: '功能建议', ux: '体验问题', other: '其他' }
+  return map[type] || type
+}
+
+function getStatusText(status: string): string {
+  const map: Record<string, string> = { pending: '待处理', processed: '已处理', ignored: '已忽略' }
+  return map[status] || status
+}
+
+function formatDateStr(dateStr: string): string {
+  if (!dateStr) return ''
+  const d = new Date(dateStr)
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
+}
 </script>
 
 <style lang="scss" scoped>
@@ -259,4 +365,121 @@ function goBack() {
   color: $text-muted;
   margin-top: $space-lg;
 }
+
+/* Tabs */
+.tabs-wrap {
+  @include tabs-wrap;
+  margin: $space-sm 0 $space-lg;
+}
+
+.tabs {
+  @include tabs;
+  border-radius: $radius-xl;
+}
+
+.tab {
+  @include tab;
+  border-radius: $radius-xl;
+
+  &.active {
+    border-radius: $radius-lg;
+    box-shadow: $shadow-md;
+  }
+}
+
+/* 我的反馈 */
+.mine-content {
+  padding: 0 $space-xl;
+}
+
+.feedback-list {
+  display: flex;
+  flex-direction: column;
+  gap: $space-sm;
+}
+
+.fb-item {
+  @include card($radius-xl);
+  padding: $space-lg;
+}
+
+.fb-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: $space-sm;
+}
+
+.fb-type {
+  font-size: $font-md;
+  color: $text-sec;
+}
+
+.fb-status {
+  font-size: $font-sm;
+  padding: 4rpx 16rpx;
+  border-radius: $radius-xs;
+
+  &.pending { color: $primary; background: $primary-light; }
+  &.processed { color: $success; background: rgba(123, 198, 126, 0.1); }
+  &.ignored { color: $text-muted; background: $bg; }
+}
+
+.fb-content {
+  font-size: $font-lg;
+  color: $text;
+  display: block;
+  margin-bottom: $space-sm;
+  line-height: 1.5;
+}
+
+.fb-date {
+  font-size: $font-sm;
+  color: $text-muted;
+  display: block;
+}
+
+.fb-reply {
+  margin-top: $space-sm;
+  padding: $space-md;
+  background: $bg;
+  border-radius: $radius-lg;
+  border-left: 6rpx solid $success;
+}
+
+.fb-reply-label {
+  font-size: $font-sm;
+  color: $success;
+  font-weight: 500;
+  display: block;
+  margin-bottom: 4rpx;
+}
+
+.fb-reply-text {
+  font-size: $font-md;
+  color: $text;
+  display: block;
+  line-height: 1.5;
+}
+
+.empty {
+  @include state-box;
+  padding: 120rpx 0;
+}
+
+.empty-text { @include state-text; }
+
+.loading-box {
+  @include flex-center;
+  padding: 80rpx 0;
+}
+
+.loading-text { font-size: $font-lg; color: $text-muted; }
+
+.load-more {
+  text-align: center;
+  padding: $space-lg 0;
+}
+
+.load-more-text { font-size: $font-md; color: $primary; }
 </style>
diff --git a/client/src/pages/profile/index.vue b/client/src/pages/profile/index.vue
index 6a2eedc..d2ef936 100644
--- a/client/src/pages/profile/index.vue
+++ b/client/src/pages/profile/index.vue
@@ -51,6 +51,10 @@
         <text class="mi-label">分类管理</text>
         <Icon name="chevronRight" :size="24" color="#BFB3B3" />
       </view>
+      <view class="menu-item" @tap="goTagManage">
+        <text class="mi-label">标签管理</text>
+        <Icon name="chevronRight" :size="24" color="#BFB3B3" />
+      </view>
       <view class="menu-item" @tap="goRecurring">
         <text class="mi-label">周期账单</text>
         <Icon name="chevronRight" :size="24" color="#BFB3B3" />
@@ -59,6 +63,10 @@
         <text class="mi-label">数据导出</text>
         <Icon name="chevronRight" :size="24" color="#BFB3B3" />
       </view>
+      <view class="menu-item" @tap="goDataImport">
+        <text class="mi-label">数据导入</text>
+        <Icon name="chevronRight" :size="24" color="#BFB3B3" />
+      </view>
     </view>
 
     <view class="menu-card mt">
@@ -83,6 +91,10 @@
         <text class="mi-label">管理后台</text>
         <Icon name="chevronRight" :size="24" color="#BFB3B3" />
       </view>
+      <view class="menu-item" @tap="goBackupManage">
+        <text class="mi-label">数据备份</text>
+        <Icon name="chevronRight" :size="24" color="#BFB3B3" />
+      </view>
     </view>
 
     <!-- 关于弹窗 -->
@@ -142,6 +154,16 @@
           </view>
         </view>
 
+        <!-- 导出方式 -->
+        <view class="export-section">
+          <text class="export-label">导出方式</text>
+          <view class="export-tabs">
+            <view class="export-tab" :class="{ active: exportMode === 'local' }" @tap="exportMode = 'local'">本地导出</view>
+            <view class="export-tab" :class="{ active: exportMode === 'server' }" @tap="exportMode = 'server'">服务端导出</view>
+          </view>
+          <text class="export-hint" v-if="exportMode === 'server'">服务端导出支持大数据量，直接从服务器下载文件</text>
+        </view>
+
         <!-- 预览 & 导出 -->
         <view class="export-footer">
           <text class="export-preview">共 <text class="export-count">{{ exportCount }}</text> 条记录</text>
@@ -227,6 +249,7 @@ const exportStartDate = ref(getLocalDateStr().replace(/-/g, '-').replace(/(\d+)$
 const exportEndDate = ref(getLocalDateStr())
 const exportType = ref<'all' | 'expense' | 'income'>('all')
 const exportFormat = ref<'csv' | 'json'>('csv')
+const exportMode = ref<'local' | 'server'>('local')
 const exportCount = ref(0)
 const exportLoading = ref(false)
 
@@ -305,6 +328,10 @@ function goCategoryManage() {
   uni.navigateTo({ url: '/pages/category-manage/index' })
 }
 
+function goTagManage() {
+  uni.navigateTo({ url: '/pages/tag-manage/index' })
+}
+
 function goRecurring() {
   uni.navigateTo({ url: '/pages/recurring/index' })
 }
@@ -317,6 +344,14 @@ function goFeedback() {
   uni.navigateTo({ url: '/pages/feedback/index' })
 }
 
+function goDataImport() {
+  uni.navigateTo({ url: '/pages/data-import/index' })
+}
+
+function goBackupManage() {
+  uni.navigateTo({ url: '/pages/backup-manage/index' })
+}
+
 function goProfileEdit() {
   uni.navigateTo({ url: '/pages/profile-edit/index' })
 }
@@ -416,6 +451,49 @@ function getLocalDateStr(): string {
 
 async function doExport() {
   if (exportCount.value === 0 || exportLoading.value) return
+
+  // 服务端导出
+  if (exportMode.value === 'server') {
+    exportLoading.value = true
+    try {
+      const { getExportUrl } = await import('@/api/export')
+      const url = getExportUrl({
+        startDate: exportStartDate.value,
+        endDate: exportEndDate.value,
+        type: exportType.value,
+        format: exportFormat.value
+      })
+      // #ifdef H5
+      window.open(url, '_blank')
+      // #endif
+      // #ifdef MP-WEIXIN
+      uni.downloadFile({
+        url,
+        success: (res) => {
+          if (res.statusCode === 200) {
+            const ext = exportFormat.value === 'json' ? 'json' : 'csv'
+            uni.openDocument({
+              filePath: res.tempFilePath,
+              fileType: ext,
+              showMenu: true,
+              fail: () => uni.showToast({ title: '打开失败', icon: 'none' })
+            })
+          }
+        },
+        fail: () => uni.showToast({ title: '下载失败', icon: 'none' })
+      })
+      // #endif
+      uni.showToast({ title: '导出成功', icon: 'success' })
+    } catch {
+      uni.showToast({ title: '导出失败', icon: 'none' })
+    } finally {
+      exportLoading.value = false
+      showExportPanel.value = false
+    }
+    return
+  }
+
+  // 本地导出
   exportLoading.value = true
   uni.showLoading({ title: '导出中 0%' })
   try {
@@ -965,4 +1043,11 @@ function saveFile(content: string, fileName: string, mimeType: string) {
   font-weight: 600;
   color: $surface;
 }
+
+.export-hint {
+  font-size: $font-sm;
+  color: $text-muted;
+  display: block;
+  margin-top: $space-sm;
+}
 </style>
diff --git a/client/src/pages/stats/index.vue b/client/src/pages/stats/index.vue
index b5bffa6..3b98082 100644
--- a/client/src/pages/stats/index.vue
+++ b/client/src/pages/stats/index.vue
@@ -22,6 +22,14 @@
       </view>
     </view>
 
+    <view class="period-wrap">
+      <view class="period-tabs">
+        <view class="period-tab" :class="{ active: period === 'week' }" @tap="switchPeriod('week')">周</view>
+        <view class="period-tab" :class="{ active: period === 'month' }" @tap="switchPeriod('month')">月</view>
+        <view class="period-tab" :class="{ active: period === 'year' }" @tap="switchPeriod('year')">年</view>
+      </view>
+    </view>
+
     <view class="overview-card">
       <view class="ov-item">
         <text class="ov-label">{{ tabType === 'expense' ? '总支出' : '总收入' }}</text>
@@ -95,7 +103,7 @@
       />
       <view class="trend-list">
         <view v-for="point in trendData" :key="point.date" class="trend-item">
-          <text class="trend-date">{{ point.date.slice(8) }}日</text>
+          <text class="trend-date">{{ point.label || (point.date.slice(8) + '日') }}</text>
           <view class="trend-bar-bg">
             <view class="trend-bar" :style="{ width: getBarWidth(point.amount) + '%' }"></view>
           </view>
@@ -139,6 +147,7 @@ const configStore = useConfigStore()
 
 const currentMonth = ref(getCurrentMonth())
 const tabType = ref<'expense' | 'income'>('expense')
+const period = ref<'week' | 'month' | 'year'>('month')
 const { overview, categoryStats, trendData } = storeToRefs(statsStore)
 const loading = ref(true)
 const loadError = ref(false)
@@ -176,7 +185,7 @@ const categoryChartData = computed(() => {
 const trendChartData = computed(() => {
   if (trendData.value.length === 0) return null
   return {
-    categories: trendData.value.map(p => p.date.slice(8) + '日'),
+    categories: trendData.value.map(p => p.label || (p.date.slice(8) + '日')),
     series: [{
       name: tabType.value === 'expense' ? '支出' : '收入',
       data: trendData.value.map(p => p.amount / 100)
@@ -241,6 +250,8 @@ onShow(() => {
 watch(currentMonth, () => loadData())
 // tab 切换时只请求分类和趋势数据
 watch(tabType, () => loadTabData())
+// 周期切换时重新加载数据
+watch(period, () => loadData())
 
 async function loadData(silent = false) {
   const seq = ++loadSeq
@@ -249,8 +260,8 @@ async function loadData(silent = false) {
     loadError.value = false
     await Promise.all([
       statsStore.fetchOverview(currentMonth.value),
-      statsStore.fetchCategoryStats(currentMonth.value, tabType.value),
-      statsStore.fetchTrend(currentMonth.value, tabType.value),
+      statsStore.fetchCategoryStats(currentMonth.value, tabType.value, period.value),
+      statsStore.fetchTrend(currentMonth.value, tabType.value, period.value),
       fetchMaxSingle(),
       fetchPrevMonthData()
     ])
@@ -269,8 +280,8 @@ async function loadTabData() {
   const seq = ++loadSeq
   try {
     await Promise.all([
-      statsStore.fetchCategoryStats(currentMonth.value, tabType.value),
-      statsStore.fetchTrend(currentMonth.value, tabType.value),
+      statsStore.fetchCategoryStats(currentMonth.value, tabType.value, period.value),
+      statsStore.fetchTrend(currentMonth.value, tabType.value, period.value),
       fetchMaxSingle()
     ])
     if (seq !== loadSeq) return
@@ -339,6 +350,10 @@ function nextMonth() {
   currentMonth.value = m === 12 ? `${y + 1}-01` : `${y}-${String(m + 1).padStart(2, '0')}`
 }
 
+function switchPeriod(p: 'week' | 'month' | 'year') {
+  period.value = p
+}
+
 function getBarWidth(amount: number) {
   const max = Math.max(...trendData.value.map(t => t.amount), 1)
   return (amount / max) * 100
@@ -409,6 +424,35 @@ function getBarWidth(amount: number) {
   }
 }
 
+.period-wrap {
+  display: flex;
+  justify-content: center;
+  margin-bottom: $space-lg;
+}
+
+.period-tabs {
+  display: inline-flex;
+  background: $surface-warm;
+  border-radius: $radius-lg;
+  padding: $space-xs;
+  gap: $space-xs;
+}
+
+.period-tab {
+  padding: $space-xs $space-lg;
+  border-radius: $radius-lg;
+  font-size: $font-md;
+  color: $text-sec;
+  transition: all $transition-normal;
+
+  &.active {
+    background: $surface;
+    color: $primary;
+    font-weight: 600;
+    box-shadow: $shadow-sm;
+  }
+}
+
 .overview-card, .chart-card {
   @include card($radius-2xl);
   margin: 0 $space-xl $space-lg;
diff --git a/client/src/pages/tag-manage/index.vue b/client/src/pages/tag-manage/index.vue
new file mode 100644
index 0000000..551efaf
--- /dev/null
+++ b/client/src/pages/tag-manage/index.vue
@@ -0,0 +1,371 @@
+<template>
+  <view class="page">
+    <view class="header-fixed">
+      <view class="status-bar" :style="{ height: statusBarHeight + 'px' }"></view>
+      <view class="nav-bar">
+        <view class="nav-back" @tap="goBack">
+          <Icon name="arrowLeft" :size="36" color="#2D1B1B" />
+        </view>
+        <text class="nav-title">标签管理</text>
+        <view class="nav-placeholder"></view>
+      </view>
+    </view>
+
+    <view class="tag-list" v-if="tagStore.tags.length > 0">
+      <view v-for="tag in tagStore.tags" :key="tag.id" class="tag-row">
+        <view class="tag-info" @tap="onEdit(tag)">
+          <view class="tag-dot" :style="{ background: tag.color }"></view>
+          <text class="tag-name">{{ tag.name }}</text>
+        </view>
+        <view class="tag-actions">
+          <view class="action-btn" @tap="onEdit(tag)">
+            <Icon name="edit" :size="24" color="#8B7E7E" />
+          </view>
+          <view class="action-btn" @tap="onDelete(tag)">
+            <Icon name="trash" :size="24" color="#FF6B6B" />
+          </view>
+        </view>
+      </view>
+    </view>
+
+    <view class="empty" v-else-if="!tagStore.loading">
+      <Icon name="tag" :size="48" color="#BFB3B3" />
+      <text class="empty-text">暂无标签，点击下方按钮添加</text>
+    </view>
+
+    <!-- 浮动添加按钮 -->
+    <view class="fab" @tap="showAddModal = true">
+      <Icon name="plus" :size="48" color="#FFFFFF" />
+    </view>
+
+    <!-- 添加弹窗 -->
+    <view class="modal-mask" v-if="showAddModal" @tap="showAddModal = false">
+      <view class="modal" @tap.stop>
+        <text class="modal-title">添加标签</text>
+        <input class="modal-input" v-model="newName" placeholder="标签名称" maxlength="20" />
+        <view class="color-picker">
+          <view
+            v-for="c in colorOptions" :key="c"
+            class="color-dot"
+            :class="{ selected: selectedColor === c }"
+            :style="{ background: c }"
+            @tap="selectedColor = c"
+          />
+        </view>
+        <view class="modal-btns">
+          <view class="modal-btn cancel" @tap="showAddModal = false">取消</view>
+          <view class="modal-btn confirm" :class="{ disabled: !newName.trim() }" @tap="onAdd">添加</view>
+        </view>
+      </view>
+    </view>
+
+    <!-- 编辑弹窗 -->
+    <view class="modal-mask" v-if="showEditModal" @tap="showEditModal = false">
+      <view class="modal" @tap.stop>
+        <text class="modal-title">编辑标签</text>
+        <input class="modal-input" v-model="editName" placeholder="标签名称" maxlength="20" />
+        <view class="color-picker">
+          <view
+            v-for="c in colorOptions" :key="c"
+            class="color-dot"
+            :class="{ selected: editColor === c }"
+            :style="{ background: c }"
+            @tap="editColor = c"
+          />
+        </view>
+        <view class="modal-btns">
+          <view class="modal-btn cancel" @tap="showEditModal = false">取消</view>
+          <view class="modal-btn confirm" @tap="onEditConfirm">确定</view>
+        </view>
+      </view>
+    </view>
+  </view>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { onShow, onPullDownRefresh } from '@dcloudio/uni-app'
+import { useTagStore } from '@/stores/tag'
+import type { Tag } from '@/api/tag'
+import { waitForReady } from '@/utils/app-ready'
+import { statusBarHeight } from '@/utils/system'
+import Icon from '@/components/Icon/Icon.vue'
+
+const tagStore = useTagStore()
+
+const showAddModal = ref(false)
+const newName = ref('')
+const colorOptions = ['#FF8C69', '#7BC67E', '#5B9BD5', '#FFD700', '#FF69B4', '#8B5CF6', '#F97316', '#06B6D4']
+const selectedColor = ref(colorOptions[0])
+
+const showEditModal = ref(false)
+const editingTag = ref<Tag | null>(null)
+const editName = ref('')
+const editColor = ref('')
+
+const initialLoaded = ref(false)
+
+onMounted(async () => {
+  await waitForReady()
+  await tagStore.fetchTags()
+  initialLoaded.value = true
+})
+
+onShow(() => {
+  if (initialLoaded.value) tagStore.fetchTags()
+})
+
+onPullDownRefresh(async () => {
+  await tagStore.fetchTags()
+  uni.stopPullDownRefresh()
+})
+
+function goBack() {
+  uni.navigateBack()
+}
+
+async function onAdd() {
+  const name = newName.value.trim()
+  if (!name) return
+
+  try {
+    await tagStore.addTag({ name, color: selectedColor.value })
+    newName.value = ''
+    showAddModal.value = false
+    uni.showToast({ title: '添加成功', icon: 'success' })
+  } catch {
+    uni.showToast({ title: '添加失败', icon: 'none' })
+  }
+}
+
+function onEdit(tag: Tag) {
+  editingTag.value = tag
+  editName.value = tag.name
+  editColor.value = tag.color
+  showEditModal.value = true
+}
+
+async function onEditConfirm() {
+  if (!editingTag.value) return
+  const name = editName.value.trim()
+  if (!name) {
+    uni.showToast({ title: '请输入名称', icon: 'none' })
+    return
+  }
+
+  try {
+    await tagStore.updateTag(editingTag.value.id, { name, color: editColor.value })
+    showEditModal.value = false
+    uni.showToast({ title: '修改成功', icon: 'success' })
+  } catch {
+    uni.showToast({ title: '修改失败', icon: 'none' })
+  }
+}
+
+async function onDelete(tag: Tag) {
+  uni.showModal({
+    title: '删除标签',
+    content: `确定删除「${tag.name}」？关联的交易记录不会被删除。`,
+    success: async (res) => {
+      if (res.confirm) {
+        try {
+          await tagStore.deleteTag(tag.id)
+          uni.showToast({ title: '已删除', icon: 'success' })
+        } catch {
+          uni.showToast({ title: '删除失败', icon: 'none' })
+        }
+      }
+    }
+  })
+}
+</script>
+
+<style lang="scss" scoped>
+@import '@/styles/mixins.scss';
+
+.page {
+  @include page-base;
+}
+
+.header-fixed {
+  @include sticky-header;
+}
+
+.status-bar { @include status-bar; }
+
+.nav-bar {
+  display: flex;
+  align-items: center;
+  padding: $space-sm $space-lg;
+}
+
+.nav-back {
+  @include nav-back;
+  border-radius: 50%;
+  &:active { background: $border; }
+}
+
+.nav-title {
+  flex: 1;
+  text-align: center;
+  font-size: $font-2xl;
+  font-weight: 600;
+  color: $text;
+}
+
+.nav-placeholder { width: 72rpx; }
+
+.tag-list { padding: 0 $space-xl; }
+
+.tag-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: $space-md 0;
+  border-bottom: 1rpx solid $border;
+
+  &:last-child { border-bottom: none; }
+}
+
+.tag-info {
+  display: flex;
+  align-items: center;
+  gap: $space-sm;
+  flex: 1;
+  padding: $space-xs 0;
+
+  &:active { opacity: 0.6; }
+}
+
+.tag-dot {
+  width: 32rpx;
+  height: 32rpx;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.tag-name { font-size: $font-lg; color: $text; font-weight: 500; }
+
+.tag-actions {
+  display: flex;
+  gap: $space-xs;
+}
+
+.action-btn {
+  width: 80rpx;
+  height: 80rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  &:active { background: $border; }
+}
+
+.empty {
+  @include state-box;
+  padding: 120rpx 0;
+}
+
+.empty-text { @include state-text; }
+
+.fab {
+  position: fixed;
+  right: $space-xl;
+  bottom: calc(120rpx + env(safe-area-inset-bottom));
+  width: 112rpx;
+  height: 112rpx;
+  background: linear-gradient(135deg, $primary, #E67355);
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  box-shadow: 8rpx 8rpx 24rpx rgba(255, 140, 105, 0.4);
+  z-index: 50;
+  &:active { transform: scale(0.95); }
+}
+
+.modal-mask {
+  position: fixed;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 200;
+}
+
+.modal {
+  width: 600rpx;
+  background: $surface;
+  border-radius: $space-lg;
+  padding: $space-2xl;
+}
+
+.modal-title {
+  font-size: $font-xl;
+  font-weight: 600;
+  color: $text;
+  display: block;
+  text-align: center;
+  margin-bottom: $space-lg;
+}
+
+.modal-input {
+  height: 96rpx;
+  background: $bg;
+  border-radius: $space-md;
+  padding: 0 $space-lg;
+  font-size: $font-lg;
+  margin-bottom: $space-md;
+}
+
+.color-picker {
+  display: flex;
+  gap: $space-lg;
+  margin-bottom: $space-md;
+  flex-wrap: wrap;
+}
+
+.color-dot {
+  width: 56rpx;
+  height: 56rpx;
+  border-radius: 50%;
+  border: 4rpx solid transparent;
+  transition: all $transition-normal;
+
+  &.selected {
+    border-color: $text;
+    transform: scale(1.15);
+  }
+  &:active { opacity: 0.7; }
+}
+
+.modal-btns {
+  display: flex;
+  gap: $space-md;
+}
+
+.modal-btn {
+  flex: 1;
+  height: 88rpx;
+  border-radius: $space-md;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: $font-lg;
+  font-weight: 600;
+
+  &.cancel {
+    background: $bg;
+    color: $text-sec;
+  }
+
+  &.confirm {
+    background: linear-gradient(135deg, $primary, #E67355);
+    color: $surface;
+  }
+
+  &.disabled { opacity: 0.5; }
+  &:active { opacity: 0.8; }
+}
+</style>
diff --git a/client/src/stores/stats.ts b/client/src/stores/stats.ts
index ecce02d..8dbe8ae 100644
--- a/client/src/stores/stats.ts
+++ b/client/src/stores/stats.ts
@@ -36,8 +36,8 @@ export const useStatsStore = defineStore('stats', () => {
     }
   }
 
-  async function fetchCategoryStats(month?: string, type: string = 'expense') {
-    const data = await api.getCategoryStats(month || getCurrentMonth(), type, getGroupId())
+  async function fetchCategoryStats(month?: string, type: string = 'expense', period?: 'week' | 'month' | 'year') {
+    const data = await api.getCategoryStats(month || getCurrentMonth(), type, getGroupId(), period)
     categoryStats.value = Array.isArray(data) ? data.map(item => ({
       ...item,
       amount: Number(item.amount) || 0,
@@ -45,8 +45,8 @@ export const useStatsStore = defineStore('stats', () => {
     })) : []
   }
 
-  async function fetchTrend(month?: string, type: string = 'expense') {
-    const data = await api.getTrend(month || getCurrentMonth(), type, getGroupId())
+  async function fetchTrend(month?: string, type: string = 'expense', period?: 'week' | 'month' | 'year') {
+    const data = await api.getTrend(month || getCurrentMonth(), type, getGroupId(), period)
     trendData.value = Array.isArray(data) ? data.map(item => ({
       ...item,
       amount: Number(item.amount) || 0
diff --git a/client/src/stores/tag.ts b/client/src/stores/tag.ts
new file mode 100644
index 0000000..375576a
--- /dev/null
+++ b/client/src/stores/tag.ts
@@ -0,0 +1,52 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import * as api from '@/api/tag'
+
+export const useTagStore = defineStore('tag', () => {
+  const tags = ref<api.Tag[]>([])
+  const loading = ref(false)
+
+  /** 获取标签列表 */
+  async function fetchTags() {
+    loading.value = true
+    try {
+      const data = await api.getTags()
+      tags.value = Array.isArray(data) ? data : []
+    } catch {
+      tags.value = []
+    } finally {
+      loading.value = false
+    }
+  }
+
+  /** 创建标签 */
+  async function addTag(data: { name: string; color: string }) {
+    const result = await api.createTag(data)
+    await fetchTags()
+    return result.id
+  }
+
+  /** 更新标签 */
+  async function updateTag(id: number, data: { name?: string; color?: string }) {
+    await api.updateTag(id, data)
+    await fetchTags()
+  }
+
+  /** 删除标签 */
+  async function deleteTag(id: number) {
+    await api.deleteTag(id)
+    await fetchTags()
+  }
+
+  /** 根据 ID 获取标签 */
+  function getById(id: number) {
+    return tags.value.find(t => t.id === id)
+  }
+
+  /** 获取选中的标签 ID 对应的标签列表 */
+  function getByIds(ids: number[]) {
+    return tags.value.filter(t => ids.includes(t.id))
+  }
+
+  return { tags, loading, fetchTags, addTag, updateTag, deleteTag, getById, getByIds }
+})
diff --git a/docs/arch-alignment.md b/docs/arch-alignment.md
new file mode 100644
index 0000000..89a275f
--- /dev/null
+++ b/docs/arch-alignment.md
@@ -0,0 +1,577 @@
+# 小菜记账 增量架构设计文档
+
+> 版本：v1.0 | 架构师：高见远（Gao） | 日期：2025-07
+
+---
+
+## Part A: 系统设计
+
+### 1. 实现方案 + 框架选型
+
+#### 1.1 分类拖拽排序（P0-1）
+
+**技术挑战**：微信小程序不支持 HTML5 Drag and Drop API，Uni-app 的 `movable-area`/`movable-view` 适合单元素拖拽而非列表重排。
+
+**方案**：基于 Touch 事件的自定义拖拽排序组件 `DragSortList`。
+
+- 监听 `@touchstart` / `@touchmove` / `@touchend` 三组事件
+- 拖拽时通过 `transform: translateY()` 实现元素位移动画
+- 拖拽过程中实时计算目标索引，交换数组元素位置
+- 松手后调用已就绪的 `sortCategories(ids)` API 批量更新排序
+- 支出/收入各自独立排序（复用现有 `tabType` 切换 + `currentCategories` computed）
+- **不引入第三方拖拽库**——Uni-app 小程序环境下无成熟可用方案，自研可控性更高
+
+#### 1.2 服务端导出流式响应（P2-3）
+
+**方案**：Node.js 原生 Stream + `pipeline()` 管道。
+
+- **< 1 万条**：使用 `Readable.from()` 创建内存流，逐行 push 数据，通过 `pipeline()` 管道传输到 Response
+- **≥ 1 万条**：先写入临时文件（`os.tmpdir()`），再 `fs.createReadStream()` 流式返回，完成后删除临时文件
+- CSV 格式：手动拼装（无需额外依赖），添加 BOM 头确保中文兼容
+- JSON 格式：流式写入 `[` + 逐条 `,` 分隔 + `]`，避免全量 JSON.stringify
+- Response Headers：`Content-Type: text/csv; charset=utf-8` / `application/json; charset=utf-8`，`Content-Disposition: attachment; filename=...`
+- 超时保护：流式响应不设 `express.json()` body 限制，但设 60s 超时
+
+#### 1.3 标签系统数据库设计（P3-2~4）
+
+**设计原则**：标签不区分收支类型，跨分类使用，轻量关联表。
+
+- `tags` 表：用户维度，每用户最多 20 个标签，8 色预设
+- `transaction_tags` 表：多对多关联，每笔交易最多 5 个标签
+- 标签与交易在同一事务中写入（`POST/PUT /transactions` 扩展 `tagIds` 字段）
+- 查询交易列表时 LEFT JOIN 聚合标签信息（避免 N+1 查询）
+- 统计按标签聚合使用 `GROUP BY tag_id`
+
+#### 1.4 数据导入（P2-2）
+
+**方案**：JSON 格式导入，服务端校验 + 批量写入 + 去重。
+
+- 接收 JSON 数组，校验字段格式（必填：date, type, amount, category_name）
+- 按 `date + type + amount + note` 组合去重（查现有记录比对）
+- 使用 `INSERT ... VALUES (...), (...), ...` 批量写入（每批 100 条）
+- 返回结果：`{ total, imported, skipped, errors[] }`
+
+#### 1.5 统计年度/周视图（P2-1）
+
+**方案**：后端 `period` 参数扩展 + 前端维度切换器。
+
+- 后端：`GET /stats/category` 和 `GET /stats/trend` 新增 `period=week|month|year` 参数
+  - `week`：基于当前日期计算本周一至本周日，趋势 X 轴为周一~周日
+  - `month`：保持现有行为（默认）
+  - `year`：基于当前年份 1-12 月，趋势 X 轴为 1月~12月
+- 年视图日期范围计算：`startDate = ${year}-01-01`, `endDate = ${year}-12-31`
+- 周视图日期范围计算：获取本周一和本周日
+- 趋势数据 GROUP BY 逻辑：年视图按月 GROUP，周视图按日 GROUP
+
+---
+
+### 2. 文件列表及相对路径
+
+#### 2.1 新建文件
+
+| 文件路径 | 说明 |
+|---------|------|
+| `client/src/api/backup.ts` | 备份管理 API（下载备份） |
+| `client/src/api/tag.ts` | 标签 CRUD + 统计 API |
+| `client/src/api/export.ts` | 服务端导出 API |
+| `client/src/api/health.ts` | 健康检查 API |
+| `client/src/stores/tag.ts` | 标签 Pinia Store |
+| `client/src/components/DragSortList/DragSortList.vue` | 拖拽排序列表组件 |
+| `client/src/pages/backup-manage/index.vue` | 备份管理页面（仅管理员） |
+| `client/src/pages/data-import/index.vue` | 数据导入页面 |
+| `client/src/pages/tag-manage/index.vue` | 标签管理页面 |
+| `server/src/routes/tag.ts` | 标签 CRUD + 按标签统计路由 |
+| `server/src/routes/export.ts` | 服务端导出路由 |
+
+#### 2.2 修改文件
+
+| 文件路径 | 主要变更 |
+|---------|---------|
+| `server/src/db/schema.sql` | 新增 tags、transaction_tags 表定义 |
+| `server/src/db/init.ts` | 新增 tags、transaction_tags 表迁移 |
+| `server/src/routes/feedback.ts` | 新增 `GET /mine` 端点（用户查看自己的反馈） |
+| `server/src/routes/backup.ts` | 新增 `GET /:id/download` 端点（临时签名 URL） |
+| `server/src/routes/stats.ts` | category/trend 端点增加 `period` 参数支持 |
+| `server/src/routes/transaction.ts` | POST/PUT 支持 `tagIds`；GET 支持 `tagId` 筛选；GET/:id 返回 tags |
+| `server/src/index.ts` | health 端点移到 authMiddleware 之前；注册 tag、export 路由 |
+| `client/src/api/feedback.ts` | 新增 `getMyFeedbacks()` API 函数 |
+| `client/src/api/stats.ts` | 修改 `getCategoryStats`、`getTrend` 支持 `period` 参数 |
+| `client/src/api/transaction.ts` | 新增 `importTransactions()`；类型扩展 `tagIds`、`tagId` |
+| `client/src/api/admin.ts` | 新增 `getHealth()` API 函数 |
+| `client/src/stores/category.ts` | 无需修改（sortCategories 已就绪） |
+| `client/src/stores/stats.ts` | fetchCategoryStats/fetchTrend 支持 period 参数 |
+| `client/src/pages/category-manage/index.vue` | 集成 DragSortList 拖拽排序 |
+| `client/src/pages/feedback/index.vue` | 新增"我的反馈"Tab |
+| `client/src/pages/stats/index.vue` | 添加维度切换器（周/月/年） |
+| `client/src/pages/profile/index.vue` | 导出面板增加"服务端导出"选项 |
+| `client/src/pages/add/index.vue` | 添加标签选择入口 |
+| `client/src/pages/bills/index.vue` | 添加标签筛选功能 |
+| `client/src/pages/admin/index.vue` | 添加服务状态卡片 |
+| `client/src/pages.json` | 注册新页面路由 |
+
+---
+
+### 3. 数据结构和接口（类图）
+
+```mermaid
+classDiagram
+    class Tag {
+        +int id
+        +int user_id
+        +string name
+        +string color
+        +string created_at
+    }
+
+    class TransactionTag {
+        +int transaction_id
+        +int tag_id
+    }
+
+    class Transaction {
+        +int id
+        +int user_id
+        +int amount
+        +string type
+        +int category_id
+        +string note
+        +string date
+        +int group_id
+        +int recurring_id
+        +Tag[] tags
+    }
+
+    class Feedback {
+        +int id
+        +int user_id
+        +string type
+        +string content
+        +string contact
+        +string status
+        +string admin_reply
+        +string created_at
+    }
+
+    class Category {
+        +int id
+        +int user_id
+        +string name
+        +string icon
+        +string color
+        +string type
+        +int sort_order
+        +int is_custom
+    }
+
+    Transaction "1" --o "*" TransactionTag : has
+    Tag "1" --o "*" TransactionTag : referenced_by
+    Transaction ..> Category : belongs_to
+
+    note for Tag "每用户最多 20 个标签\n8 色预设颜色选择器\n标签不区分收支类型"
+    note for TransactionTag "复合主键 (transaction_id, tag_id)\n每笔交易最多 5 个标签"
+```
+
+#### 3.1 新增数据库表
+
+**tags 表**
+
+```sql
+CREATE TABLE IF NOT EXISTS tags (
+  id INT AUTO_INCREMENT PRIMARY KEY,
+  user_id INT NOT NULL,
+  name VARCHAR(20) NOT NULL COMMENT '标签名称',
+  color VARCHAR(20) NOT NULL DEFAULT '#FF8C69' COMMENT '标签颜色',
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  UNIQUE KEY uk_user_name (user_id, name),
+  INDEX idx_user (user_id),
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+```
+
+**transaction_tags 表**
+
+```sql
+CREATE TABLE IF NOT EXISTS transaction_tags (
+  transaction_id INT NOT NULL,
+  tag_id INT NOT NULL,
+  PRIMARY KEY (transaction_id, tag_id),
+  INDEX idx_tag (tag_id),
+  FOREIGN KEY (transaction_id) REFERENCES transactions(id) ON DELETE CASCADE,
+  FOREIGN KEY (tag_id) REFERENCES tags(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+```
+
+#### 3.2 新增/修改 API 端点
+
+##### 标签 CRUD
+
+| 方法 | 路径 | 请求 | 响应 | 说明 |
+|------|------|------|------|------|
+| GET | `/api/tags` | — | `{ list: Tag[] }` | 获取当前用户所有标签 |
+| POST | `/api/tags` | `{ name, color }` | `{ id }` | 创建标签（限 20 个/用户） |
+| PUT | `/api/tags/:id` | `{ name?, color? }` | — | 更新标签 |
+| DELETE | `/api/tags/:id` | — | — | 删除标签（级联删除关联） |
+| GET | `/api/stats/by-tag` | `?month&period&type` | `TagStat[]` | 按标签统计 |
+
+**TagStat 类型**：
+```ts
+{ id: number; name: string; color: string; amount: number; count: number }
+```
+
+##### 用户反馈列表
+
+| 方法 | 路径 | 请求 | 响应 | 说明 |
+|------|------|------|------|------|
+| GET | `/api/feedback/mine` | `?page&pageSize` | `{ list, total, page, pageSize }` | 当前用户的反馈列表 |
+
+##### 备份下载
+
+| 方法 | 路径 | 请求 | 响应 | 说明 |
+|------|------|------|------|------|
+| GET | `/api/backup/:id/download` | — | 文件流 | 下载备份文件（临时签名 URL，1h 有效） |
+
+**实现方式**：在 `backup` 表中无需存储，使用 HMAC-SHA256 生成带过期时间的签名 token，下载时校验签名。签名格式：`backupId:timestamp:hmac-sha256(backupId:timestamp)`。将签名作为 `?token=xxx` 传给前端，下载端点校验 token 有效性（无需认证中间件）。
+
+##### 统计年度/周视图
+
+| 方法 | 路径 | 请求参数 | 说明 |
+|------|------|---------|------|
+| GET | `/api/stats/category` | 新增 `period=week\|month\|year` | 周/月/年分类统计 |
+| GET | `/api/stats/trend` | 新增 `period=week\|month\|year` | 周/月/年趋势数据 |
+
+**period 参数逻辑**：
+- `week`（新增）：`startDate` = 本周一，`endDate` = 本周日，趋势按日 GROUP
+- `month`（默认）：保持现有行为，趋势按日 GROUP
+- `year`（新增）：`startDate` = 当年1月1日，`endDate` = 当年12月31日，趋势按月 GROUP（`DATE_FORMAT(date, '%Y-%m')`）
+
+**年视图趋势响应**（新增 `label` 字段）：
+```ts
+{ label: string; date: string; amount: number }[]
+// 年视图 label = "1月"~"12月"
+// 周视图 label = "周一"~"周日"
+// 月视图 label = "1日"~"31日"（保持兼容）
+```
+
+##### 数据导入
+
+| 方法 | 路径 | 请求 | 响应 | 说明 |
+|------|------|------|------|------|
+| POST | `/api/transactions/import` | `{ items: ImportItem[] }` | `{ total, imported, skipped, errors[] }` | 批量导入 |
+
+**ImportItem 类型**：
+```ts
+{
+  date: string       // 必填，YYYY-MM-DD
+  type: string       // 必填，expense | income
+  amount: number     // 必填，单位：分
+  category_name: string  // 可选，匹配不到则归入"未分类"
+  note?: string
+  tag_names?: string[]   // 可选，按名称匹配标签
+}
+```
+
+##### 服务端导出
+
+| 方法 | 路径 | 请求参数 | 响应 | 说明 |
+|------|------|---------|------|------|
+| GET | `/api/export` | `startDate, endDate, type, format=csv\|json` | 文件流 | 流式导出 |
+
+##### 健康检查（改造）
+
+| 方法 | 路径 | 说明 |
+|------|------|------|
+| GET | `/api/health` | 移到 `authMiddleware` 之前，无需认证 |
+
+##### 交易记录（改造）
+
+| 方法 | 路径 | 变更 |
+|------|------|------|
+| POST | `/api/transactions` | 请求新增 `tagIds: number[]`（可选，最多 5 个） |
+| PUT | `/api/transactions/:id` | 请求新增 `tagIds: number[]`（可选，最多 5 个，全量替换） |
+| GET | `/api/transactions` | 新增 `tagId` 查询参数筛选 |
+| GET | `/api/transactions/:id` | 响应新增 `tags: { id, name, color }[]` |
+
+---
+
+### 4. 程序调用流程（时序图）
+
+#### 4.1 分类拖拽排序
+
+```mermaid
+sequenceDiagram
+    participant U as 用户
+    participant P as category-manage
+    participant D as DragSortList
+    participant S as categoryStore
+    participant A as sortCategories API
+    participant B as PUT /categories/sort
+
+    U->>P: 长按分类项进入排序模式
+    P->>P: showSortMode = true
+    P->>D: 渲染 DragSortList (items=currentCategories)
+    U->>D: touchstart (记录起始位置)
+    U->>D: touchmove (计算偏移, 交换元素位置)
+    D->>D: 实时更新 items 数组顺序
+    U->>D: touchend (拖拽结束)
+    D->>P: @change事件 (新顺序ids)
+    P->>S: sortCategories(newIds)
+    S->>A: sortCategories(ids)
+    A->>B: PUT /categories/sort { ids }
+    B-->>A: { code: 0 }
+    A-->>S: 成功
+    S->>S: fetchCategories() 刷新
+```
+
+#### 4.2 数据导入
+
+```mermaid
+sequenceDiagram
+    participant U as 用户
+    participant P as data-import
+    participant A as transaction API
+    participant S as POST /transactions/import
+    participant DB as MySQL
+
+    U->>P: 选择 JSON 文件
+    P->>P: uni.chooseFile / 读取文件内容
+    P->>P: 解析 JSON，显示预览(条数、日期范围)
+    U->>P: 确认导入
+    P->>A: importTransactions(items)
+    A->>S: POST /transactions/import { items }
+    S->>S: 校验每条记录格式
+    S->>DB: 查询已有记录 (去重比对)
+    S->>DB: 批量 INSERT (每批100条)
+    S->>DB: 写入 transaction_tags (如有 tag_names)
+    S-->>A: { total, imported, skipped, errors }
+    A-->>P: 导入结果
+    P->>U: 显示导入结果(成功X条, 跳过Y条)
+```
+
+#### 4.3 标签关联交易
+
+```mermaid
+sequenceDiagram
+    participant U as 用户
+    participant P as add/index
+    participant TS as tagStore
+    participant TA as transaction API
+    participant S as POST /transactions
+    participant DB as MySQL
+
+    U->>P: 点击"添加标签"
+    P->>P: 显示标签选择面板(已有标签 + 新建入口)
+    U->>P: 选择标签(最多5个)
+    P->>P: selectedTagIds 更新
+    U->>P: 保存交易
+    P->>TA: createTransaction({...data, tagIds})
+    TA->>S: POST /transactions { amount, type, ..., tagIds }
+    S->>S: 校验 tagIds (≤5, 属于当前用户)
+    S->>DB: INSERT INTO transactions
+    S->>DB: INSERT INTO transaction_tags (批量)
+    S-->>TA: { id }
+    TA-->>P: 成功
+
+    Note over P,U: 编辑交易时同理，PUT 全量替换 tagIds
+```
+
+#### 4.4 服务端导出
+
+```mermaid
+sequenceDiagram
+    participant U as 用户
+    participant P as profile/index
+    participant A as export API
+    participant S as GET /api/export
+    participant DB as MySQL
+
+    U->>P: 点击"服务端导出"
+    P->>A: serverExport(params)
+    A->>S: GET /api/export?startDate=&endDate=&type=&format=
+    S->>DB: SELECT COUNT(*) (判断数量)
+    alt 记录 < 10000
+        S->>DB: 流式查询 (cursor)
+        S->>S: Readable.from() 逐行生成 CSV/JSON
+        S-->>P: 流式响应 (Transfer-Encoding: chunked)
+    else 记录 ≥ 10000
+        S->>DB: 流式查询写入临时文件
+        S->>S: fs.createReadStream()
+        S-->>P: 流式响应
+        S->>S: 删除临时文件
+    end
+    P->>U: 保存文件到本地
+```
+
+---
+
+### 5. 待明确事项
+
+| # | 事项 | 当前假设 |
+|---|------|---------|
+| 1 | 备份下载的签名 URL 是通过新端点直接下载，还是返回签名 URL 让前端跳转？ | 采用直接下载方式：`GET /api/backup/:id/download?token=xxx`，后端校验 token 后流式返回文件 |
+| 2 | 年视图/周视图的 `month` 参数如何处理？ | 新增 `period` 参数，当 `period=year` 时 `month` 参数被忽略，使用当前年份；当 `period=week` 时使用当前周 |
+| 3 | 导入 JSON 的 `category_name` 匹配不到时如何处理？ | 归入"未分类"（category_id = NULL），不自动创建分类 |
+| 4 | 标签预设 8 色具体色值？ | 复用现有 `colorOptions`：`#FF8C69, #7BC67E, #5B9BD5, #FFD700, #FF69B4, #8B5CF6, #F97316, #06B6D4` |
+| 5 | 健康检查移到 authMiddleware 前是否影响安全？ | `/api/health` 仅返回 DB 连接状态和服务器时间，不泄露敏感信息，安全无影响 |
+| 6 | 数据导入文件大小限制？ | 前端限制 5MB，后端 `express.json({ limit: '5mb' })` 仅对导入端点放宽（当前全局 10kb） |
+
+---
+
+## Part B: 任务分解
+
+### 6. 需要新增的依赖包
+
+#### 后端 (server)
+
+```
+无新增依赖
+```
+
+> 流式导出使用 Node.js 内置 `stream`、`fs`、`os` 模块，CSV 拼装手写无需 `json2csv`，签名 URL 使用已有 `crypto` 模块。
+
+#### 前端 (client)
+
+```
+无新增依赖
+```
+
+> 拖拽排序使用 Touch 事件自研实现，不引入第三方拖拽库。
+
+---
+
+### 7. 任务列表（按依赖顺序）
+
+#### T01: 后端基础设施 + 数据库迁移
+
+**描述**：新增 tags/transaction_tags 表、修改 health 端点位置、注册新路由模块、调整 express.json 限制。
+
+**涉及文件**：
+- `server/src/db/schema.sql` — 新增 tags、transaction_tags 表定义
+- `server/src/db/init.ts` — 新增迁移逻辑（创建 tags、transaction_tags 表）
+- `server/src/index.ts` — health 移到 authMiddleware 前；注册 tag、export 路由；导入端点 body 限制调整
+- `server/src/routes/tag.ts` — 新建：标签 CRUD 端点 + 按标签统计端点
+- `server/src/routes/export.ts` — 新建：服务端流式导出端点
+
+**依赖任务**：无
+
+**优先级**：P0
+
+---
+
+#### T02: 后端 API 改造（现有路由扩展）
+
+**描述**：扩展现有路由以支持新功能——反馈 mine 端点、备份下载、交易 tagIds 支持、统计 period 参数。
+
+**涉及文件**：
+- `server/src/routes/feedback.ts` — 新增 `GET /mine` 端点
+- `server/src/routes/backup.ts` — 新增 `GET /:id/download` 端点（签名 URL 校验）
+- `server/src/routes/transaction.ts` — POST/PUT 支持 tagIds；GET 支持 tagId 筛选；GET/:id 返回 tags
+- `server/src/routes/stats.ts` — category/trend 增加 period 参数（week/year 视图）
+
+**依赖任务**：T01（tags 表需先存在）
+
+**优先级**：P0
+
+---
+
+#### T03: 前端 API 层 + Store 层 + 新页面
+
+**描述**：新增所有前端 API 函数和 Store，创建新页面（标签管理、备份管理、数据导入），创建拖拽组件。
+
+**涉及文件**：
+- `client/src/api/feedback.ts` — 新增 `getMyFeedbacks()`
+- `client/src/api/backup.ts` — 新建：备份列表 + 下载 API
+- `client/src/api/tag.ts` — 新建：标签 CRUD + 统计 API
+- `client/src/api/export.ts` — 新建：服务端导出 API
+- `client/src/api/health.ts` — 新建：健康检查 API
+- `client/src/api/stats.ts` — 修改：getCategoryStats/getTrend 支持 period
+- `client/src/api/transaction.ts` — 新增 `importTransactions()`；类型扩展 tagIds/tagId
+- `client/src/api/admin.ts` — 新增 `getHealth()`
+- `client/src/stores/tag.ts` — 新建：标签 Pinia Store
+- `client/src/stores/stats.ts` — 修改：fetchCategoryStats/fetchTrend 支持 period
+- `client/src/components/DragSortList/DragSortList.vue` — 新建：拖拽排序组件
+- `client/src/pages/tag-manage/index.vue` — 新建：标签管理页面
+- `client/src/pages/backup-manage/index.vue` — 新建：备份管理页面
+- `client/src/pages/data-import/index.vue` — 新建：数据导入页面
+- `client/src/pages.json` — 注册新页面路由
+
+**依赖任务**：T01（需知 API 端点格式）
+
+**优先级**：P1
+
+---
+
+#### T04: 前端现有页面改造
+
+**描述**：改造现有页面以集成新功能——分类拖拽、反馈列表、统计维度切换、标签入口、服务端导出、健康检查卡片。
+
+**涉及文件**：
+- `client/src/pages/category-manage/index.vue` — 集成 DragSortList 拖拽排序
+- `client/src/pages/feedback/index.vue` — 新增"我的反馈"Tab
+- `client/src/pages/stats/index.vue` — 添加维度切换器（周/月/年）+ 标签统计入口
+- `client/src/pages/profile/index.vue` — 导出面板增加"服务端导出"选项
+- `client/src/pages/add/index.vue` — 添加标签选择入口
+- `client/src/pages/bills/index.vue` — 添加标签筛选功能
+- `client/src/pages/admin/index.vue` — 添加服务状态卡片（30s 自动刷新）
+
+**依赖任务**：T03（依赖 API 层和组件）
+
+**优先级**：P1
+
+---
+
+#### T05: 集成联调 + 边界处理
+
+**描述**：前后端联调、边界场景处理（导入去重、大量数据导出、拖拽边界）、最终测试修复。
+
+**涉及文件**：
+- 可能涉及 T01~T04 中所有文件的微调
+- 重点：`server/src/routes/export.ts`（大量数据流式导出稳定性）
+- 重点：`server/src/routes/transaction.ts`（导入去重逻辑）
+- 重点：`client/src/components/DragSortList/DragSortList.vue`（拖拽边界场景）
+
+**依赖任务**：T04
+
+**优先级**：P2
+
+---
+
+### 8. 共享知识（跨文件约定）
+
+```
+- API 响应格式统一：{ code: 0, data: T } 成功；{ code: 5位数字, message: string } 失败
+- 错误码约定：
+  - 40001: 参数无效
+  - 40002: 类型无效
+  - 40100: 未登录
+  - 40101: token过期
+  - 40300: 无权限
+  - 40400: 资源不存在
+  - 42900: 请求频繁
+  - 50000: 服务器内部错误
+- 金额单位统一为"分"（INT），前端展示时 / 100
+- 日期格式统一为 YYYY-MM-DD，月份为 YYYY-MM
+- 认证使用 HMAC-SHA256 Token，Bearer 格式，30天有效期
+- 公开路径（无需认证）：/api/auth/login, /api/auth/demo-login, /api/health, /api/backup/:id/download（token 校验）
+- 前端 request() 函数自动处理 401 重登录、错误 toast
+- Pinia Store 方法命名：fetch* (获取数据)、add/create (新增)、update (更新)、delete (删除)
+- 前端 API 函数命名：get* (GET), create*/submit* (POST), update*/sort* (PUT), delete* (DELETE)
+- SCSS 变量：$primary=#FF8C69, $success=#7BC67E, $danger=#FF6B6B, $text=#2D1B1B, $surface=#FFFFFF, $bg=#FFF8F0
+- 组件样式使用 scoped + @import '@/styles/mixins.scss'
+- 标签预设 8 色：#FF8C69, #7BC67E, #5B9BD5, #FFD700, #FF69B4, #8B5CF6, #F97316, #06B6D4
+- 每笔交易最多 5 个标签，每用户最多 20 个标签
+- 导入文件限制 5MB，导出流式响应超时 60s
+- 分页参数：page (从1开始), pageSize (默认20, 最大100)
+```
+
+---
+
+### 9. 任务依赖图
+
+```mermaid
+graph LR
+    T01[T01: 后端基础设施+DB迁移] --> T02[T02: 后端API改造]
+    T01 --> T03[T03: 前端API+Store+新页面]
+    T02 --> T04[T04: 前端现有页面改造]
+    T03 --> T04
+    T04 --> T05[T05: 集成联调+边界处理]
+```
diff --git a/docs/class-diagram.mermaid b/docs/class-diagram.mermaid
new file mode 100644
index 0000000..a345da9
--- /dev/null
+++ b/docs/class-diagram.mermaid
@@ -0,0 +1,55 @@
+classDiagram
+    class Tag {
+        +int id
+        +int user_id
+        +string name
+        +string color
+        +string created_at
+    }
+
+    class TransactionTag {
+        +int transaction_id
+        +int tag_id
+    }
+
+    class Transaction {
+        +int id
+        +int user_id
+        +int amount
+        +string type
+        +int category_id
+        +string note
+        +string date
+        +int group_id
+        +int recurring_id
+        +Tag[] tags
+    }
+
+    class Feedback {
+        +int id
+        +int user_id
+        +string type
+        +string content
+        +string contact
+        +string status
+        +string admin_reply
+        +string created_at
+    }
+
+    class Category {
+        +int id
+        +int user_id
+        +string name
+        +string icon
+        +string color
+        +string type
+        +int sort_order
+        +int is_custom
+    }
+
+    Transaction "1" --o "*" TransactionTag : has
+    Tag "1" --o "*" TransactionTag : referenced_by
+    Transaction ..> Category : belongs_to
+
+    note for Tag "每用户最多 20 个标签\n8 色预设颜色选择器\n标签不区分收支类型"
+    note for TransactionTag "复合主键 (transaction_id, tag_id)\n每笔交易最多 5 个标签"
diff --git a/docs/prd-alignment.md b/docs/prd-alignment.md
new file mode 100644
index 0000000..399cc7f
--- /dev/null
+++ b/docs/prd-alignment.md
@@ -0,0 +1,254 @@
+# 小菜记账 — 前后端对齐增量 PRD
+
+> 版本: v1.0 | 日期: 2026-07-11
+> 类型: 增量 PRD（仅包含变更部分）
+> 基线: 前后端对齐分析发现的 8 项差距
+
+---
+
+## 一、产品目标
+
+| # | 目标 | 说明 |
+|---|------|------|
+| G1 | 消灭前后端差距，实现已开发后端能力的前端落地 | 后端已有排序、备份、健康检查等端点，但前端缺失对应 UI |
+| G2 | 补齐用户反馈闭环，提升产品可信度 | 用户提交反馈后无法查看回复，体验断裂 |
+| G3 | 扩展数据维度与吞吐能力 | 支持年度/周度统计、服务端导出、数据导入，为数据量增长做准备 |
+
+---
+
+## 二、用户故事
+
+### P0 — 分类拖拽排序
+
+> As a 用户, I want 在分类管理页面拖拽调整分类顺序, so that 常用分类排在前面，记账时选得更快。
+
+### P1 — 反馈回复展示
+
+> As a 用户, I want 查看自己提交的反馈列表及管理员回复, so that 我知道反馈是否被处理以及处理结果。
+
+### P1 — 备份管理页面
+
+> As a 管理员, I want 在前端触发备份、查看备份列表并下载备份文件, so that 我可以在出现问题时快速恢复数据。
+
+### P2 — 统计年度/周视图
+
+> As a 用户, I want 在统计页面切换年/周/月维度, so that 我可以从不同时间粒度分析收支趋势。
+
+### P2 — 数据导入与服务端导出
+
+> As a 用户, I want 导入 JSON 格式的交易数据, so that 我可以从其他记账工具迁移历史数据。
+>
+> As a 用户, I want 大数据量导出走服务端生成, so that 导出速度快、不卡顿。
+
+### P3 — 健康检查
+
+> As a 管理员, I want 在管理页面看到后端服务运行状态, so that 我能第一时间发现服务异常。
+
+### P3 — 交易标签系统
+
+> As a 用户, I want 给交易添加标签（如"出差""聚餐"）, so that 我可以按标签筛选和统计关联交易。
+>
+> As a 用户, I want 按标签筛选交易列表和查看标签维度的统计, so that 我可以追踪特定场景的收支。
+
+---
+
+## 三、需求池
+
+### P0 — Must Have
+
+| ID | 需求 | 前端 | 后端 | 验收标准 |
+|----|------|------|------|----------|
+| P0-1 | 分类拖拽排序 | 分类管理页面添加拖拽排序 UI，拖拽结束后调用 `sortCategories(ids)` | 无新增（`PUT /categories/sort` 已实现） | 拖拽后顺序持久化；刷新页面顺序保持；支出/收入分类各自排序 |
+
+### P1 — Should Have
+
+| ID | 需求 | 前端 | 后端 | 验收标准 |
+|----|------|------|------|----------|
+| P1-1 | 用户反馈列表 | 反馈页面新增"我的反馈"Tab，展示反馈列表及管理员回复 | 新增 `GET /feedback/mine` 端点（用户维度，返回当前用户的反馈+`admin_reply`） | 用户只能看自己的反馈；未回复显示"待处理"状态；已回复显示回复内容和时间 |
+| P1-2 | 备份管理页面 | 新增备份管理页面：触发备份按钮、备份列表、下载按钮 | 新增 `GET /backup/:id/download` 端点 | 管理员可触发备份并看到进度；列表显示备份时间和大小；点击下载获取备份文件 |
+
+### P2 — Nice to Have
+
+| ID | 需求 | 前端 | 后端 | 验收标准 |
+|----|------|------|------|----------|
+| P2-1 | 统计年度/周视图 | 统计页面添加维度切换器（周/月/年），切换后图表和排行联动更新 | `GET /stats/category` 和 `GET /stats/trend` 支持 `period=week|month|year` 参数，按对应维度聚合数据 | 周视图显示本周每日数据；年视图显示每月汇总；切换时图表平滑过渡 |
+| P2-2 | 数据导入 | 我的页面新增"数据导入"入口；支持 JSON 文件上传；导入前预览数据条数，确认后提交 | 新增 `POST /api/transactions/import` 端点，接收 JSON 文件，校验格式，批量写入 | 支持 JSON 格式；导入前展示条数预览；重复数据（同日期/金额/分类）跳过并提示；导入完成显示成功/跳过计数 |
+| P2-3 | 数据导出服务端化 | 数据导出页面新增"服务端导出"选项；大数据量（>1000条）自动走服务端 | 新增 `GET /api/export` 端点，支持 CSV/JSON 格式，流式响应 | 客户端导出保留作为轻量选项；服务端导出无条数限制；下载进度可感知 |
+
+### P3 — Nice to Have（远期）
+
+| ID | 需求 | 前端 | 后端 | 验收标准 |
+|----|------|------|------|----------|
+| P3-1 | 健康检查展示 | 管理页面新增服务状态卡片，显示后端健康信息 | 将 `/api/health` 端点移到 authMiddleware 之前 | 管理页面实时显示服务状态（正常/异常）；无需登录即可调用健康检查 |
+| P3-2 | 交易标签 — 标签管理 | 新增标签管理页面：创建/编辑/删除标签（名称+颜色） | 新增 `tags` 表及 CRUD 端点（`GET/POST/PUT/DELETE /api/tags`） | 每个用户独立标签；标签不可重名；删除标签时解绑关联交易 |
+| P3-3 | 交易标签 — 交易关联 | 记账页面新增"添加标签"入口；交易详情/编辑页可修改标签 | `transactions` 表新增关联；`POST/PUT /transactions` 支持 `tagIds` 字段 | 一笔交易可关联多个标签；标签选择器展示用户已有标签 |
+| P3-4 | 交易标签 — 标签筛选统计 | 账单页支持按标签筛选；统计页新增标签维度视图 | `GET /transactions` 支持 `tagId` 筛选参数；`GET /stats/by-tag` 新端点 | 筛选结果仅显示含指定标签的交易；标签统计展示各标签下收支总额 |
+
+---
+
+## 四、UI 交互说明
+
+### P0-1 分类拖拽排序
+
+```
+分类管理页面（category-manage/index.vue）变更：
+
+1. 页面顶部新增提示栏："长按拖拽可调整分类顺序"
+2. 每个分类项左侧显示拖拽手柄图标（Lucide GripVertical, #BFB3B3）
+3. 长按分类项（300ms）进入拖拽模式：
+   - 被拖拽项 elevation 提升（shadow-clay-float）
+   - 背景色变为 #FFF0E6
+   - 其余项轻微缩进让出空间
+4. 拖拽过程中实时交换位置（带 150ms 过渡动画）
+5. 松手后：
+   - 调用 sortCategories(ids) 提交新顺序
+   - 成功：轻量 toast "排序已保存"
+   - 失败：回滚到原位置 + 错误提示
+6. 支出/收入 Tab 各自独立排序，互不影响
+```
+
+### P1-1 用户反馈列表
+
+```
+反馈页面（feedback/index.vue）变更：
+
+1. 页面顶部新增 Tab 切换："提交反馈" | "我的反馈"
+2. "我的反馈" Tab 内容：
+   ├── 列表按提交时间倒序排列
+   ├── 每项显示：
+   │   ├── 反馈内容（截断2行，点击展开）
+   │   ├── 提交时间（相对时间："3天前"）
+   │   ├── 状态标签：
+   │   │   ├── 待处理 → 灰色 #BFB3B3
+   │   │   ├── 已回复 → 绿色 #7BC67E
+   │   │   └── 已关闭 → 橙色 #FF8C69
+   │   └── 管理员回复区域（仅已回复时显示）：
+   │       ├── 分割线 + "管理员回复" 标签
+   │       ├── 回复内容
+   │       └── 回复时间
+   └── 空状态：插画 + "还没有提交过反馈"
+3. 下拉刷新更新列表
+4. 上拉加载更多（分页）
+```
+
+### P1-2 备份管理页面
+
+```
+新增页面（backup-manage/index.vue）：
+
+1. 顶部操作区：
+   ├── [立即备份] 主按钮（Clay 风格）
+   ├── 点击后按钮变为 loading 态
+   └── 成功后列表顶部新增一条记录 + toast "备份成功"
+2. 备份列表：
+   ├── 按时间倒序
+   ├── 每项显示：
+   │   ├── 备份时间（2026-07-11 14:30）
+   │   ├── 文件大小（12.3 MB）
+   │   └── [下载] 按钮（Lucide Download 图标）
+   ├── 点击下载：
+   │   ├── 按钮变为进度条
+   │   └── 完成后 toast "下载完成"
+   └── 空状态："暂无备份记录"
+3. 仅管理员角色可见此页面入口
+```
+
+### P2-1 统计年度/周视图
+
+```
+统计页面（stats/index.vue）变更：
+
+1. 月份选择器升级为维度切换器：
+   ├── 新增三个 Tab：周 | 月 | 年
+   ├── 样式同现有支出/收入切换器
+   └── 切换后日期选择器联动：
+       ├── 周：显示 "2026年7月 第2周"，左右切换周
+       ├── 月：保持现有行为
+       └── 年：显示 "2026年"，左右切换年
+2. 图表联动更新：
+   ├── 周维度：趋势图 X 轴为周一~周日
+   ├── 年维度：趋势图 X 轴为1月~12月
+   └── 环形图和排行同步更新为对应维度数据
+3. 概览卡片数值联动
+```
+
+### P2-2 & P2-3 数据导入与导出
+
+```
+我的页面变更 + 新增页面：
+
+1. "数据导出"入口变更：
+   ├── 点击后进入导出页面
+   ├── 导出方式选择：
+   │   ├── 客户端导出（< 1000 条推荐）— 现有逻辑
+   │   └── 服务端导出（≥ 1000 条推荐）— 新增
+   ├── 格式选择：CSV | JSON
+   ├── 日期范围选择器
+   └── [开始导出] 按钮
+2. 新增"数据导入"入口（我的页面功能列表）：
+   ├── 点击后进入导入页面
+   ├── 步骤流程：
+   │   ├── Step 1：选择文件（仅 .json）
+   │   ├── Step 2：预览 — 显示识别条数、日期范围、分类映射
+   │   ├── Step 3：确认导入
+   │   └── 结果：成功 N 条 / 跳过 M 条
+   └── 导入模板下载链接
+```
+
+### P3-1 健康检查展示
+
+```
+管理页面变更：
+
+1. 页面顶部新增服务状态卡片：
+   ├── 正常：绿色圆点 + "服务运行正常" + 响应时间 "23ms"
+   ├── 异常：红色圆点 + "服务异常" + 错误信息
+   └── 检测中：灰色圆点 + 旋转图标
+2. 每 30 秒自动刷新一次
+3. 点击卡片可手动刷新
+```
+
+### P3-2~4 交易标签系统
+
+```
+全局变更：
+
+1. 记账页面（add/index.vue）：
+   ├── 附加信息区新增"添加标签"行
+   ├── 点击弹出标签选择器（底部弹窗）：
+   │   ├── 已有标签列表（可多选）
+   │   ├── 搜索框
+   │   └── [新建标签] 快捷入口
+   └── 已选标签以药丸标签形式展示在输入区
+2. 账单页面（bills/index.vue）：
+   ├── 筛选栏新增标签筛选
+   └── 筛选弹窗中增加标签选择
+3. 统计页面（stats/index.vue）：
+   └── 新增"标签统计"卡片（环形图 + 排行）
+4. 我的页面：
+   └── 功能列表新增"标签管理"入口
+5. 标签管理页面（tag-manage/index.vue）— 新增：
+   ├── 标签列表（名称 + 颜色色块 + 关联交易数）
+   ├── [新建标签] 按钮
+   ├── 编辑弹窗：名称输入 + 颜色选择器（8色预设）
+   └── 删除确认：关联 N 笔交易时提示"将解除关联"
+```
+
+---
+
+## 五、待确认问题
+
+| # | 问题 | 影响范围 | 建议 |
+|---|------|----------|------|
+| Q1 | 分类拖拽排序是否需要动画反馈？拖拽手柄位置（左侧还是右侧）？ | P0-1 | 建议左侧手柄 + 长按触发，符合主流交互习惯 |
+| Q2 | 用户反馈列表是否需要通知推送？当管理员回复后用户是否收到微信服务通知？ | P1-1 | 后端已有通知逻辑，但微信订阅消息需用户主动订阅，建议先做页面内展示，通知作为后续增强 |
+| Q3 | 备份文件的下载鉴权方式？URL 是否需要时效性签名？ | P1-2 | 建议使用临时签名 URL（有效期 1 小时），避免备份文件被猜测 URL 直接访问 |
+| Q4 | 统计年度视图的趋势图粒度：按月汇总还是按季汇总？ | P2-1 | 建议按月汇总（12 个点），季度可通过后续分组实现 |
+| Q5 | 数据导入的 JSON 格式规范？是否需要支持其他记账 App 的导出格式？ | P2-2 | 建议先定义小菜记账自有 JSON 格式，提供模板下载；其他 App 格式兼容作为远期需求 |
+| Q6 | 服务端导出的文件存储方式：内存生成直接流式返回 vs 先写文件再下载？ | P2-3 | 建议 < 1 万条内存流式返回，≥ 1 万条先写临时文件再下载，避免内存溢出 |
+| Q7 | 交易标签上限：每笔交易最多关联几个标签？每个用户最多创建多少个标签？ | P3-2~4 | 建议每笔交易最多 5 个标签，每用户最多 20 个标签，后续可调整 |
+| Q8 | 标签与分类的关系：标签是否可以跨分类？同一标签能否同时用于支出和收入？ | P3-2~4 | 建议标签不区分收支类型，跨分类使用，这是标签区别于分类的核心价值 |
+
+---
+
+*文档版本: v1.0 | 最后更新: 2026-07-11*
diff --git a/docs/sequence-diagram.mermaid b/docs/sequence-diagram.mermaid
new file mode 100644
index 0000000..7ee953a
--- /dev/null
+++ b/docs/sequence-diagram.mermaid
@@ -0,0 +1,53 @@
+sequenceDiagram
+    participant U as 用户
+    participant P as category-manage
+    participant D as DragSortList
+    participant S as categoryStore
+    participant A as sortCategories API
+    participant B as PUT /categories/sort
+
+    U->>P: 长按分类项进入排序模式
+    P->>P: showSortMode = true
+    P->>D: 渲染 DragSortList (items=currentCategories)
+    U->>D: touchstart (记录起始位置)
+    U->>D: touchmove (计算偏移, 交换元素位置)
+    D->>D: 实时更新 items 数组顺序
+    U->>D: touchend (拖拽结束)
+    D->>P: @change事件 (新顺序ids)
+    P->>S: sortCategories(newIds)
+    S->>A: sortCategories(ids)
+    A->>B: PUT /categories/sort { ids }
+    B-->>A: { code: 0 }
+    A-->>S: 成功
+    S->>S: fetchCategories() 刷新
+
+    %% 数据导入流程
+
+    U->>P2 as data-import: 选择 JSON 文件
+    P2->>P2: uni.chooseFile / 读取文件内容
+    P2->>P2: 解析 JSON，显示预览(条数、日期范围)
+    U->>P2: 确认导入
+    P2->>A2 as transaction API: importTransactions(items)
+    A2->>S2 as POST /transactions/import: POST { items }
+    S2->>S2: 校验每条记录格式
+    S2->>DB as MySQL: 查询已有记录 (去重比对)
+    S2->>DB: 批量 INSERT (每批100条)
+    S2->>DB: 写入 transaction_tags (如有 tag_names)
+    S2-->>A2: { total, imported, skipped, errors }
+    A2-->>P2: 导入结果
+    P2->>U: 显示导入结果(成功X条, 跳过Y条)
+
+    %% 标签关联交易流程
+
+    U->>P3 as add/index: 点击"添加标签"
+    P3->>P3: 显示标签选择面板(已有标签 + 新建入口)
+    U->>P3: 选择标签(最多5个)
+    P3->>P3: selectedTagIds 更新
+    U->>P3: 保存交易
+    P3->>A3 as transaction API: createTransaction({...data, tagIds})
+    A3->>S3 as POST /transactions: POST { amount, type, ..., tagIds }
+    S3->>S3: 校验 tagIds (≤5, 属于当前用户)
+    S3->>DB: INSERT INTO transactions
+    S3->>DB: INSERT INTO transaction_tags (批量)
+    S3-->>A3: { id }
+    A3-->>P3: 成功
diff --git a/server/src/db/init.ts b/server/src/db/init.ts
index 17e4681..8faf7ff 100644
--- a/server/src/db/init.ts
+++ b/server/src/db/init.ts
@@ -277,6 +277,40 @@ async function runMigrations(conn: mysql.Connection) {
     console.log('[DB] Migrating: adding recurring_id to transactions')
     await conn.query("ALTER TABLE transactions ADD COLUMN recurring_id INT DEFAULT NULL COMMENT '关联的周期模板ID' AFTER group_id")
   }
+
+  // 标签表
+  const hasTags = await tableExists(conn, 'tags')
+  if (!hasTags) {
+    console.log('[DB] Migrating: creating tags table')
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS tags (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        user_id INT NOT NULL,
+        name VARCHAR(20) NOT NULL COMMENT '标签名称',
+        color VARCHAR(20) NOT NULL DEFAULT '#FF8C69' COMMENT '标签颜色',
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        UNIQUE KEY uk_user_name (user_id, name),
+        INDEX idx_user (user_id),
+        FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
+    `)
+  }
+
+  // 交易-标签关联表
+  const hasTransactionTags = await tableExists(conn, 'transaction_tags')
+  if (!hasTransactionTags) {
+    console.log('[DB] Migrating: creating transaction_tags table')
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS transaction_tags (
+        transaction_id INT NOT NULL,
+        tag_id INT NOT NULL,
+        PRIMARY KEY (transaction_id, tag_id),
+        INDEX idx_tag (tag_id),
+        FOREIGN KEY (transaction_id) REFERENCES transactions(id) ON DELETE CASCADE,
+        FOREIGN KEY (tag_id) REFERENCES tags(id) ON DELETE CASCADE
+      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
+    `)
+  }
 }
 
 export async function initDatabase() {
diff --git a/server/src/db/schema.sql b/server/src/db/schema.sql
index af39cf7..ab20f90 100644
--- a/server/src/db/schema.sql
+++ b/server/src/db/schema.sql
@@ -170,3 +170,23 @@ CREATE TABLE IF NOT EXISTS recurring_templates (
   FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
   FOREIGN KEY (category_id) REFERENCES categories(id) ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+CREATE TABLE IF NOT EXISTS tags (
+  id INT AUTO_INCREMENT PRIMARY KEY,
+  user_id INT NOT NULL,
+  name VARCHAR(20) NOT NULL COMMENT '标签名称',
+  color VARCHAR(20) NOT NULL DEFAULT '#FF8C69' COMMENT '标签颜色',
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  UNIQUE KEY uk_user_name (user_id, name),
+  INDEX idx_user (user_id),
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+CREATE TABLE IF NOT EXISTS transaction_tags (
+  transaction_id INT NOT NULL,
+  tag_id INT NOT NULL,
+  PRIMARY KEY (transaction_id, tag_id),
+  INDEX idx_tag (tag_id),
+  FOREIGN KEY (transaction_id) REFERENCES transactions(id) ON DELETE CASCADE,
+  FOREIGN KEY (tag_id) REFERENCES tags(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
diff --git a/server/src/index.ts b/server/src/index.ts
index 7db4793..00f7997 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -24,6 +24,8 @@ import configRoutes from './routes/config'
 import trackRoutes from './routes/track'
 import logsRoutes from './routes/logs'
 import recurringRoutes from './routes/recurring'
+import tagRoutes from './routes/tag'
+import exportRoutes from './routes/export'
 import { backupDatabase } from './utils/backup'
 
 // Warn if token secret is using default fallback
@@ -50,7 +52,7 @@ app.use(cors({
   },
   credentials: true,
 }))
-app.use(express.json({ limit: '10kb' }))
+app.use(express.json({ limit: '5mb' }))
 
 // 请求日志
 app.use(requestLogger)
@@ -145,6 +147,28 @@ app.get('/api/notifications/image/:filename', async (req, res) => {
   }
 })
 
+// 健康检查端点（公开，不经过 auth 中间件）
+app.get('/api/health', async (_req, res) => {
+  try {
+    await pool.query('SELECT 1')
+    res.json({
+      status: 'ok',
+      db: 'connected',
+      uptime: Math.floor(process.uptime()),
+      version: process.env.npm_package_version || '1.0.0',
+      timestamp: new Date().toISOString()
+    })
+  } catch {
+    res.status(503).json({
+      status: 'error',
+      db: 'disconnected',
+      uptime: Math.floor(process.uptime()),
+      version: process.env.npm_package_version || '1.0.0',
+      timestamp: new Date().toISOString()
+    })
+  }
+})
+
 app.use(authMiddleware)
 
 app.use('/api/auth', authLimiter, authRoutes)
@@ -163,15 +187,8 @@ app.use('/api/config', apiLimiter, configRoutes)
 app.use('/api/track', apiLimiter, trackRoutes)
 app.use('/api/logs', apiLimiter, logsRoutes)
 app.use('/api/recurring', apiLimiter, recurringRoutes)
-
-app.get('/api/health', async (_req, res) => {
-  try {
-    await pool.query('SELECT 1')
-    res.json({ status: 'ok', db: 'connected', time: new Date().toISOString() })
-  } catch {
-    res.status(503).json({ status: 'error', db: 'disconnected', time: new Date().toISOString() })
-  }
-})
+app.use('/api/tags', apiLimiter, tagRoutes)
+app.use('/api/export', apiLimiter, exportRoutes)
 
 // 全局错误处理中间件（兜底未捕获的异常）
 app.use((err: any, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
diff --git a/server/src/routes/backup.ts b/server/src/routes/backup.ts
index f877e3b..98f3722 100644
--- a/server/src/routes/backup.ts
+++ b/server/src/routes/backup.ts
@@ -2,11 +2,74 @@ import { Router, Response } from 'express'
 import { AuthRequest } from '../middleware/auth'
 import { backupDatabase, getBackupList } from '../utils/backup'
 import { requireAdmin } from '../middleware/requireAdmin'
+import { createHmac } from 'crypto'
+import fs from 'fs'
+import path from 'path'
 
 const router = Router()
+const BACKUP_DIR = process.env.BACKUP_DIR || '/var/backups/xiaocai'
+const JWT_SECRET = process.env.JWT_SECRET || 'xiaocai-secret'
 
-// 所有路由都需要管理员权限
-router.use((req, res, next) => requireAdmin(req, res, next))
+// 所有路由都需要管理员权限（除了 :id/download 使用签名校验）
+router.use((req, res, next) => {
+  // /:id/download 不走 requireAdmin，自行校验签名
+  if (req.path.match(/^\/\d+\/download$/)) {
+    return next()
+  }
+  requireAdmin(req, res, next)
+})
+
+// 下载备份文件（签名 token 校验，不走 authMiddleware）
+router.get('/:id/download', async (req: AuthRequest, res: Response) => {
+  try {
+    const token = req.query.token as string
+    if (!token) {
+      return res.status(400).json({ code: 40001, message: '缺少下载令牌' })
+    }
+
+    // 解析 token：backupId:timestamp:hmac
+    const parts = token.split(':')
+    if (parts.length !== 3) {
+      return res.status(400).json({ code: 40001, message: '令牌格式无效' })
+    }
+
+    const [backupId, timestamp, hmac] = parts
+
+    // 校验 timestamp 未过期（1小时内）
+    const ts = parseInt(timestamp)
+    if (isNaN(ts) || Date.now() - ts > 3600000) {
+      return res.status(400).json({ code: 40001, message: '令牌已过期' })
+    }
+
+    // 校验 HMAC
+    const expectedHmac = createHmac('sha256', JWT_SECRET)
+      .update(`${backupId}:${timestamp}`)
+      .digest('hex')
+    if (hmac !== expectedHmac) {
+      return res.status(403).json({ code: 40300, message: '令牌签名无效' })
+    }
+
+    // 校验 backupId 存在于备份列表中
+    const list = getBackupList()
+    const backup = list.find(b => b.name === backupId)
+    if (!backup) {
+      return res.status(404).json({ code: 40400, message: '备份不存在' })
+    }
+
+    // 流式返回备份文件
+    const filepath = path.join(BACKUP_DIR, backup.name)
+    if (!fs.existsSync(filepath)) {
+      return res.status(404).json({ code: 40400, message: '备份文件不存在' })
+    }
+
+    res.setHeader('Content-Type', 'application/gzip')
+    res.setHeader('Content-Disposition', `attachment; filename=${backup.name}`)
+    fs.createReadStream(filepath).pipe(res)
+  } catch (err) {
+    console.error('[Backup] download error:', err)
+    res.status(500).json({ code: 50000, message: '下载失败' })
+  }
+})
 
 // 手动触发备份
 router.post('/', async (req: AuthRequest, res: Response) => {
@@ -23,11 +86,45 @@ router.post('/', async (req: AuthRequest, res: Response) => {
 router.get('/', async (req: AuthRequest, res: Response) => {
   try {
     const list = getBackupList()
-    res.json({ code: 0, data: list })
+    // 为每条记录生成下载令牌
+    const listWithToken = list.map(item => {
+      const timestamp = Date.now()
+      const hmac = createHmac('sha256', JWT_SECRET)
+        .update(`${item.name}:${timestamp}`)
+        .digest('hex')
+      return {
+        ...item,
+        downloadToken: `${item.name}:${timestamp}:${hmac}`
+      }
+    })
+    res.json({ code: 0, data: listWithToken })
   } catch (err) {
     console.error('[Backup] 获取列表失败:', err)
     res.status(500).json({ code: 50000, message: '获取备份列表失败' })
   }
 })
 
+// 删除备份
+router.delete('/:id', async (req: AuthRequest, res: Response) => {
+  try {
+    const backupName = req.params.id
+    const list = getBackupList()
+    const backup = list.find(b => b.name === backupName)
+    if (!backup) {
+      return res.status(404).json({ code: 40400, message: '备份不存在' })
+    }
+
+    // 删除备份文件
+    const filepath = path.join(BACKUP_DIR, backup.name)
+    if (fs.existsSync(filepath)) {
+      fs.unlinkSync(filepath)
+    }
+
+    res.json({ code: 0 })
+  } catch (err) {
+    console.error('[Backup] 删除备份失败:', err)
+    res.status(500).json({ code: 50000, message: '删除备份失败' })
+  }
+})
+
 export default router
diff --git a/server/src/routes/export.ts b/server/src/routes/export.ts
new file mode 100644
index 0000000..69ddac7
--- /dev/null
+++ b/server/src/routes/export.ts
@@ -0,0 +1,231 @@
+import { Router, Response } from 'express'
+import pool from '../db/connection'
+import { AuthRequest } from '../middleware/auth'
+import { Readable } from 'stream'
+import { pipeline } from 'stream/promises'
+import fs from 'fs'
+import os from 'os'
+import path from 'path'
+
+const router = Router()
+
+const VALID_TYPES = ['expense', 'income', 'all']
+const VALID_FORMATS = ['csv', 'json']
+const DATE_REGEX = /^\d{4}-\d{2}-\d{2}$/
+const LARGE_DATA_THRESHOLD = 10000
+const EXPORT_TIMEOUT = 60000
+
+/** 流式导出交易数据 */
+router.get('/', async (req: AuthRequest, res: Response) => {
+  try {
+    // 支持 query token 认证：如果没有 Authorization header，从 query.token 读取
+    if (!req.headers.authorization && req.query.token) {
+      req.headers.authorization = `Bearer ${req.query.token}`
+    }
+
+    const { startDate, endDate, type = 'all', format = 'csv' } = req.query
+
+    // 参数校验
+    if (!startDate || !endDate || !DATE_REGEX.test(startDate as string) || !DATE_REGEX.test(endDate as string)) {
+      return res.status(400).json({ code: 40001, message: '日期参数无效' })
+    }
+    if (!VALID_TYPES.includes(type as string)) {
+      return res.status(400).json({ code: 40001, message: '类型参数无效' })
+    }
+    if (!VALID_FORMATS.includes(format as string)) {
+      return res.status(400).json({ code: 40001, message: '格式参数无效' })
+    }
+
+    const isCsv = format === 'csv'
+    const today = new Date().toISOString().slice(0, 10).replace(/-/g, '')
+    const filename = isCsv ? `export_${today}.csv` : `export_${today}.json`
+
+    // 构建查询条件
+    let where = 'WHERE t.user_id = ? AND t.date >= ? AND t.date <= ?'
+    const params: any[] = [req.userId, startDate, endDate]
+
+    if (type !== 'all') {
+      where += ' AND t.type = ?'
+      params.push(type)
+    }
+
+    // 先统计数量
+    const [countResult] = await pool.query(
+      `SELECT COUNT(*) as total FROM transactions t ${where}`,
+      params
+    )
+    const total = (countResult as any[])[0].total
+
+    if (total === 0) {
+      // 空数据直接返回
+      if (isCsv) {
+        res.setHeader('Content-Type', 'text/csv; charset=utf-8')
+        res.setHeader('Content-Disposition', `attachment; filename=${filename}`)
+        res.send('\uFEFF日期,类型,分类,金额,备注\n')
+      } else {
+        res.setHeader('Content-Type', 'application/json; charset=utf-8')
+        res.setHeader('Content-Disposition', `attachment; filename=${filename}`)
+        res.send('[]')
+      }
+      return
+    }
+
+    // 设置响应头
+    if (isCsv) {
+      res.setHeader('Content-Type', 'text/csv; charset=utf-8')
+    } else {
+      res.setHeader('Content-Type', 'application/json; charset=utf-8')
+    }
+    res.setHeader('Content-Disposition', `attachment; filename=${filename}`)
+
+    // 超时保护
+    const timeout = setTimeout(() => {
+      if (!res.writableEnded) {
+        res.end()
+      }
+    }, EXPORT_TIMEOUT)
+
+    if (total < LARGE_DATA_THRESHOLD) {
+      // 小数据量：内存流
+      const [rows] = await pool.query(
+        `SELECT DATE_FORMAT(t.date, '%Y-%m-%d') as date, t.type,
+                COALESCE(c.name, '未分类') as category_name,
+                t.amount, COALESCE(t.note, '') as note
+         FROM transactions t
+         LEFT JOIN categories c ON t.category_id = c.id
+         ${where}
+         ORDER BY t.date ASC, t.created_at ASC`,
+        params
+      )
+
+      const data = rows as any[]
+      const readable = new Readable({
+        read() {}
+      })
+
+      if (isCsv) {
+        readable.push('\uFEFF日期,类型,分类,金额,备注\n')
+        for (const row of data) {
+          const note = String(row.note).replace(/"/g, '""')
+          const typeLabel = row.type === 'expense' ? '支出' : '收入'
+          readable.push(`${row.date},${typeLabel},${row.category_name},${row.amount},"${note}"\n`)
+        }
+      } else {
+        readable.push('[')
+        for (let i = 0; i < data.length; i++) {
+          const row = data[i]
+          const entry = JSON.stringify({
+            date: row.date,
+            type: row.type,
+            category: row.category_name,
+            amount: row.amount,
+            note: row.note
+          })
+          readable.push(i === 0 ? entry : ',' + entry)
+        }
+        readable.push(']')
+      }
+      readable.push(null)
+
+      readable.on('end', () => {
+        clearTimeout(timeout)
+      })
+      readable.on('error', () => {
+        clearTimeout(timeout)
+      })
+      readable.on('close', () => {
+        clearTimeout(timeout)
+      })
+
+      readable.pipe(res)
+    } else {
+      // 大数据量：临时文件流
+      const tmpDir = os.tmpdir()
+      const tmpFile = path.join(tmpDir, `export_${Date.now()}_${req.userId}.${format}`)
+
+      // 分批查询并写入临时文件
+      const BATCH_SIZE = 5000
+      let offset = 0
+      const writeStream = fs.createWriteStream(tmpFile, { encoding: 'utf-8' })
+
+      if (isCsv) {
+        writeStream.write('\uFEFF日期,类型,分类,金额,备注\n')
+      } else {
+        writeStream.write('[')
+      }
+
+      let isFirst = true
+      while (offset < total) {
+        const [rows] = await pool.query(
+          `SELECT DATE_FORMAT(t.date, '%Y-%m-%d') as date, t.type,
+                  COALESCE(c.name, '未分类') as category_name,
+                  t.amount, COALESCE(t.note, '') as note
+           FROM transactions t
+           LEFT JOIN categories c ON t.category_id = c.id
+           ${where}
+           ORDER BY t.date ASC, t.created_at ASC
+           LIMIT ? OFFSET ?`,
+          [...params, BATCH_SIZE, offset]
+        )
+
+        const data = rows as any[]
+        for (const row of data) {
+          if (isCsv) {
+            const note = String(row.note).replace(/"/g, '""')
+            const typeLabel = row.type === 'expense' ? '支出' : '收入'
+            writeStream.write(`${row.date},${typeLabel},${row.category_name},${row.amount},"${note}"\n`)
+          } else {
+            const entry = JSON.stringify({
+              date: row.date,
+              type: row.type,
+              category: row.category_name,
+              amount: row.amount,
+              note: row.note
+            })
+            writeStream.write(isFirst ? entry : ',' + entry)
+            isFirst = false
+          }
+        }
+
+        offset += BATCH_SIZE
+      }
+
+      if (!isCsv) {
+        writeStream.write(']')
+      }
+      writeStream.end()
+
+      // 等待写入完成
+      await new Promise<void>((resolve, reject) => {
+        writeStream.on('finish', resolve)
+        writeStream.on('error', reject)
+      })
+
+      // 流式返回临时文件
+      const readStream = fs.createReadStream(tmpFile, { encoding: 'utf-8' })
+
+      const cleanup = () => {
+        clearTimeout(timeout)
+        // 删除临时文件
+        fs.unlink(tmpFile, (err) => {
+          if (err) console.error('[Export] 删除临时文件失败:', err)
+        })
+      }
+
+      readStream.on('end', cleanup)
+      readStream.on('error', cleanup)
+      readStream.on('close', cleanup)
+
+      await pipeline(readStream, res)
+    }
+  } catch (err) {
+    console.error('[Export] GET error:', err)
+    if (!res.headersSent) {
+      res.status(500).json({ code: 50000, message: '服务器错误' })
+    } else {
+      res.end()
+    }
+  }
+})
+
+export default router
diff --git a/server/src/routes/feedback.ts b/server/src/routes/feedback.ts
index 5a7bb79..0a8bba4 100644
--- a/server/src/routes/feedback.ts
+++ b/server/src/routes/feedback.ts
@@ -5,6 +5,36 @@ import { requireAdmin } from '../middleware/requireAdmin'
 
 const router = Router()
 
+/** 当前用户的反馈列表 */
+router.get('/mine', authMiddleware, async (req, res) => {
+  try {
+    const userId = (req as any).userId
+    const page = Math.max(1, parseInt(req.query.page as string) || 1)
+    const pageSize = Math.min(100, Math.max(1, parseInt(req.query.pageSize as string) || 20))
+    const offset = (page - 1) * pageSize
+
+    const [countResult] = await pool.execute(
+      'SELECT COUNT(*) as total FROM feedbacks WHERE user_id = ?',
+      [userId]
+    )
+    const total = (countResult as any[])[0].total
+
+    const [rows] = await pool.execute(
+      `SELECT id, type, content, contact, status, admin_reply, created_at
+       FROM feedbacks
+       WHERE user_id = ?
+       ORDER BY created_at DESC
+       LIMIT ? OFFSET ?`,
+      [userId, pageSize, offset]
+    )
+
+    res.json({ code: 0, data: { list: rows, total, page, pageSize } })
+  } catch (error) {
+    console.error('Get my feedback error:', error)
+    res.status(500).json({ code: 50000, message: '获取失败' })
+  }
+})
+
 /** 用户提交反馈 */
 router.post('/', authMiddleware, async (req, res) => {
   try {
@@ -52,15 +82,15 @@ router.get('/', requireAdmin, async (req, res) => {
     )
     const total = (countResult as any[])[0].total
 
-    // LIMIT/OFFSET 直接嵌入 SQL（execute 对参数类型要求严格）
+    // LIMIT/OFFSET 使用参数化查询
     const [rows] = await pool.execute(
       `SELECT f.*, u.nickname, u.avatar_url
        FROM feedbacks f
        LEFT JOIN users u ON f.user_id = u.id
        WHERE ${where}
        ORDER BY f.created_at DESC
-       LIMIT ${pageSize} OFFSET ${offset}`,
-      params
+       LIMIT ? OFFSET ?`,
+      [...params, pageSize, offset]
     )
 
     res.json({ code: 0, data: { list: rows, total, page, pageSize } })
diff --git a/server/src/routes/stats.ts b/server/src/routes/stats.ts
index b2b4308..d68a24f 100644
--- a/server/src/routes/stats.ts
+++ b/server/src/routes/stats.ts
@@ -5,6 +5,7 @@ import { getCurrentMonth, getMonthRange } from '../utils/date'
 
 const router = Router()
 const VALID_TYPES = ['expense', 'income']
+const VALID_PERIODS = ['week', 'month', 'year']
 
 /** 根据 group_id 参数构建 WHERE 条件（含成员验证） */
 async function buildWhereClause(
@@ -103,14 +104,40 @@ router.get('/overview', async (req: AuthRequest, res: Response) => {
 
 router.get('/category', async (req: AuthRequest, res: Response) => {
   try {
-    const { month, type = 'expense', group_id } = req.query
+    const { month, type = 'expense', group_id, period = 'month' } = req.query
     if (!VALID_TYPES.includes(type as string)) {
       return res.status(400).json({ code: 40002, message: '类型无效' })
     }
+    if (!VALID_PERIODS.includes(period as string)) {
+      return res.status(400).json({ code: 40001, message: 'period参数无效，仅支持week/month/year' })
+    }
+
+    let startDate: string
+    let endDate: string
+
+    const now = new Date()
     const m = (month as string) || getCurrentMonth()
-    const range = getMonthRange(m)
-    if (!range) return res.status(400).json({ code: 40001, message: '月份格式无效' })
-    const { startDate, endDate } = range
+
+    if (period === 'week') {
+      // 本周一到本周日
+      const dayOfWeek = now.getDay() || 7
+      const monday = new Date(now)
+      monday.setDate(now.getDate() - dayOfWeek + 1)
+      const sunday = new Date(monday)
+      sunday.setDate(monday.getDate() + 6)
+      startDate = monday.toISOString().slice(0, 10)
+      endDate = sunday.toISOString().slice(0, 10)
+    } else if (period === 'year') {
+      const year = m.split('-')[0] || String(now.getFullYear())
+      startDate = `${year}-01-01`
+      endDate = `${year}-12-31`
+    } else {
+      // month（默认）
+      const range = getMonthRange(m)
+      if (!range) return res.status(400).json({ code: 40001, message: '月份格式无效' })
+      startDate = range.startDate
+      endDate = range.endDate
+    }
 
     const result = await buildWhereClause(
       req.userId,
@@ -138,14 +165,57 @@ router.get('/category', async (req: AuthRequest, res: Response) => {
 
 router.get('/trend', async (req: AuthRequest, res: Response) => {
   try {
-    const { month, type = 'expense', group_id } = req.query
+    const { month, type = 'expense', group_id, period = 'month' } = req.query
     if (!VALID_TYPES.includes(type as string)) {
       return res.status(400).json({ code: 40002, message: '类型无效' })
     }
+    if (!VALID_PERIODS.includes(period as string)) {
+      return res.status(400).json({ code: 40001, message: 'period参数无效，仅支持week/month/year' })
+    }
+
+    let startDate: string
+    let endDate: string
+    let groupBy: string
+    let labelExpr: string
+
+    const now = new Date()
     const m = (month as string) || getCurrentMonth()
-    const range = getMonthRange(m)
-    if (!range) return res.status(400).json({ code: 40001, message: '月份格式无效' })
-    const { startDate, endDate } = range
+
+    if (period === 'week') {
+      // 本周一到本周日
+      const dayOfWeek = now.getDay() || 7
+      const monday = new Date(now)
+      monday.setDate(now.getDate() - dayOfWeek + 1)
+      const sunday = new Date(monday)
+      sunday.setDate(monday.getDate() + 6)
+      startDate = monday.toISOString().slice(0, 10)
+      endDate = sunday.toISOString().slice(0, 10)
+      groupBy = 't.date'
+      labelExpr = `CASE DAYOFWEEK(t.date)
+        WHEN 1 THEN '周日'
+        WHEN 2 THEN '周一'
+        WHEN 3 THEN '周二'
+        WHEN 4 THEN '周三'
+        WHEN 5 THEN '周四'
+        WHEN 6 THEN '周五'
+        WHEN 7 THEN '周六'
+      END`
+    } else if (period === 'year') {
+      // 当年1月1日到12月31日
+      const year = m.split('-')[0] || String(now.getFullYear())
+      startDate = `${year}-01-01`
+      endDate = `${year}-12-31`
+      groupBy = "DATE_FORMAT(t.date, '%Y-%m')"
+      labelExpr = `CONCAT(MONTH(t.date), '月')`
+    } else {
+      // month（默认）
+      const range = getMonthRange(m)
+      if (!range) return res.status(400).json({ code: 40001, message: '月份格式无效' })
+      startDate = range.startDate
+      endDate = range.endDate
+      groupBy = 't.date'
+      labelExpr = `CONCAT(DAY(t.date), '日')`
+    }
 
     const result = await buildWhereClause(
       req.userId,
@@ -155,10 +225,10 @@ router.get('/trend', async (req: AuthRequest, res: Response) => {
     if (!result) return res.status(403).json({ code: 40300, message: '无权访问此群组' })
 
     const [rows] = await pool.query(
-      `SELECT DATE_FORMAT(t.date, '%Y-%m-%d') as date, SUM(t.amount) as amount
+      `SELECT DATE_FORMAT(t.date, '%Y-%m-%d') as date, ${labelExpr} as label, SUM(t.amount) as amount
        FROM transactions t
        ${result.where}
-       GROUP BY t.date
+       GROUP BY ${groupBy}
        ORDER BY t.date`,
       [...result.params, type, startDate, endDate]
     )
diff --git a/server/src/routes/tag.ts b/server/src/routes/tag.ts
new file mode 100644
index 0000000..bcd584d
--- /dev/null
+++ b/server/src/routes/tag.ts
@@ -0,0 +1,216 @@
+import { Router, Response } from 'express'
+import pool from '../db/connection'
+import { AuthRequest } from '../middleware/auth'
+import { getCurrentMonth, getMonthRange } from '../utils/date'
+
+const router = Router()
+
+const VALID_COLORS = ['#FF8C69', '#7BC67E', '#5B9BD5', '#FFD700', '#FF69B4', '#8B5CF6', '#F97316', '#06B6D4']
+const MAX_TAGS_PER_USER = 20
+const MAX_TAG_NAME_LENGTH = 20
+
+/** 获取当前用户所有标签 */
+router.get('/', async (req: AuthRequest, res: Response) => {
+  try {
+    const [rows] = await pool.query(
+      'SELECT id, user_id, name, color, created_at FROM tags WHERE user_id = ? ORDER BY created_at ASC',
+      [req.userId]
+    )
+    res.json({ code: 0, data: { list: rows } })
+  } catch (err) {
+    console.error('[Tag] GET error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
+/** 创建标签 */
+router.post('/', async (req: AuthRequest, res: Response) => {
+  try {
+    const { name, color } = req.body
+
+    if (!name || typeof name !== 'string' || !name.trim()) {
+      return res.status(400).json({ code: 40001, message: '标签名称不能为空' })
+    }
+
+    const trimmedName = name.trim()
+    if (trimmedName.length > MAX_TAG_NAME_LENGTH) {
+      return res.status(400).json({ code: 40001, message: '标签名称不能超过20个字符' })
+    }
+
+    if (!color || typeof color !== 'string' || !VALID_COLORS.includes(color)) {
+      return res.status(400).json({ code: 40001, message: '标签颜色无效' })
+    }
+
+    // 检查用户标签数量限制
+    const [countResult] = await pool.query(
+      'SELECT COUNT(*) as cnt FROM tags WHERE user_id = ?',
+      [req.userId]
+    )
+    if ((countResult as any[])[0].cnt >= MAX_TAGS_PER_USER) {
+      return res.status(400).json({ code: 40001, message: '标签数量已达上限（20个）' })
+    }
+
+    // 检查同名标签
+    const [existResult] = await pool.query(
+      'SELECT id FROM tags WHERE user_id = ? AND name = ?',
+      [req.userId, trimmedName]
+    )
+    if ((existResult as any[]).length > 0) {
+      return res.status(400).json({ code: 40001, message: '标签名称已存在' })
+    }
+
+    const [result] = await pool.query(
+      'INSERT INTO tags (user_id, name, color) VALUES (?, ?, ?)',
+      [req.userId, trimmedName, color]
+    )
+
+    res.json({ code: 0, data: { id: (result as any).insertId } })
+  } catch (err) {
+    console.error('[Tag] POST error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
+/** 更新标签 */
+router.put('/:id', async (req: AuthRequest, res: Response) => {
+  try {
+    const { id } = req.params
+    const { name, color } = req.body
+
+    // 校验标签属于当前用户
+    const [existRows] = await pool.query(
+      'SELECT id FROM tags WHERE id = ? AND user_id = ?',
+      [id, req.userId]
+    )
+    if ((existRows as any[]).length === 0) {
+      return res.status(404).json({ code: 40400, message: '标签不存在' })
+    }
+
+    const updates: string[] = []
+    const params: any[] = []
+
+    if (name !== undefined) {
+      if (typeof name !== 'string' || !name.trim()) {
+        return res.status(400).json({ code: 40001, message: '标签名称不能为空' })
+      }
+      const trimmedName = name.trim()
+      if (trimmedName.length > MAX_TAG_NAME_LENGTH) {
+        return res.status(400).json({ code: 40001, message: '标签名称不能超过20个字符' })
+      }
+      // 检查同名标签（排除自身）
+      const [dupRows] = await pool.query(
+        'SELECT id FROM tags WHERE user_id = ? AND name = ? AND id != ?',
+        [req.userId, trimmedName, id]
+      )
+      if ((dupRows as any[]).length > 0) {
+        return res.status(400).json({ code: 40001, message: '标签名称已存在' })
+      }
+      updates.push('name = ?')
+      params.push(trimmedName)
+    }
+
+    if (color !== undefined) {
+      if (!VALID_COLORS.includes(color)) {
+        return res.status(400).json({ code: 40001, message: '标签颜色无效' })
+      }
+      updates.push('color = ?')
+      params.push(color)
+    }
+
+    if (updates.length === 0) {
+      return res.status(400).json({ code: 40001, message: '缺少更新内容' })
+    }
+
+    params.push(id)
+    await pool.query(
+      `UPDATE tags SET ${updates.join(', ')} WHERE id = ?`,
+      params
+    )
+
+    res.json({ code: 0 })
+  } catch (err) {
+    console.error('[Tag] PUT error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
+/** 删除标签 */
+router.delete('/:id', async (req: AuthRequest, res: Response) => {
+  try {
+    const { id } = req.params
+
+    // 校验标签属于当前用户（级联删除 transaction_tags 由外键处理）
+    const [result] = await pool.query(
+      'DELETE FROM tags WHERE id = ? AND user_id = ?',
+      [id, req.userId]
+    )
+    if ((result as any).affectedRows === 0) {
+      return res.status(404).json({ code: 40400, message: '标签不存在' })
+    }
+
+    res.json({ code: 0 })
+  } catch (err) {
+    console.error('[Tag] DELETE error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
+/** 按标签统计 */
+router.get('/stats/by-tag', async (req: AuthRequest, res: Response) => {
+  try {
+    const { month, period = 'month', type = 'expense' } = req.query
+
+    if (!['expense', 'income'].includes(type as string)) {
+      return res.status(400).json({ code: 40001, message: '类型无效' })
+    }
+
+    let startDate: string
+    let endDate: string
+
+    const now = new Date()
+    const m = (month as string) || getCurrentMonth()
+
+    if (period === 'week') {
+      // 本周一到本周日
+      const dayOfWeek = now.getDay() || 7 // 周日=7
+      const monday = new Date(now)
+      monday.setDate(now.getDate() - dayOfWeek + 1)
+      const sunday = new Date(monday)
+      sunday.setDate(monday.getDate() + 6)
+      startDate = monday.toISOString().slice(0, 10)
+      endDate = sunday.toISOString().slice(0, 10)
+    } else if (period === 'year') {
+      // 当年1月1日到12月31日
+      const year = now.getFullYear()
+      startDate = `${year}-01-01`
+      endDate = `${year}-12-31`
+    } else {
+      // month（默认）
+      const range = getMonthRange(m)
+      if (!range) return res.status(400).json({ code: 40001, message: '月份格式无效' })
+      startDate = range.startDate
+      endDate = range.endDate
+    }
+
+    const [rows] = await pool.query(
+      `SELECT tg.id, tg.name, tg.color,
+              COALESCE(SUM(t.amount), 0) as amount,
+              COUNT(DISTINCT t.id) as count
+       FROM tags tg
+       LEFT JOIN transaction_tags tt ON tg.id = tt.tag_id
+       LEFT JOIN transactions t ON tt.transaction_id = t.id AND t.type = ? AND t.date >= ? AND t.date <= ?
+       WHERE tg.user_id = ?
+       GROUP BY tg.id, tg.name, tg.color
+       HAVING count > 0
+       ORDER BY amount DESC`,
+      [type, startDate, endDate, req.userId]
+    )
+
+    res.json({ code: 0, data: { list: rows } })
+  } catch (err) {
+    console.error('[Tag] stats/by-tag error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
+export default router
diff --git a/server/src/routes/transaction.ts b/server/src/routes/transaction.ts
index c12abda..ed0b494 100644
--- a/server/src/routes/transaction.ts
+++ b/server/src/routes/transaction.ts
@@ -33,6 +33,17 @@ router.get('/:id', async (req: AuthRequest, res: Response) => {
     if (!tx) {
       return res.status(404).json({ code: 40400, message: '记录不存在' })
     }
+
+    // 查询关联的标签
+    const [tagRows] = await pool.query(
+      `SELECT tg.id, tg.name, tg.color
+       FROM transaction_tags tt
+       INNER JOIN tags tg ON tt.tag_id = tg.id
+       WHERE tt.transaction_id = ?`,
+      [req.params.id]
+    )
+    tx.tags = tagRows
+
     res.json({ code: 0, data: tx })
   } catch (err) {
     console.error('[Transaction] GET by ID error:', err)
@@ -42,7 +53,7 @@ router.get('/:id', async (req: AuthRequest, res: Response) => {
 
 router.get('/', async (req: AuthRequest, res: Response) => {
   try {
-    const { page, pageSize, type, startDate, endDate, sortBy, group_id, category_id, category_ids, minAmount, maxAmount, keyword } = req.query
+    const { page, pageSize, type, startDate, endDate, sortBy, group_id, category_id, category_ids, minAmount, maxAmount, keyword, tagId } = req.query
     const pSize = safeInt(pageSize, 20, 1, 100)
     const pNum = safeInt(page, 1, 1, 99999)
     const offset = (pNum - 1) * pSize
@@ -105,6 +116,17 @@ router.get('/', async (req: AuthRequest, res: Response) => {
       where += ' AND t.note LIKE ?'; params.push(`%${escapedKeyword}%`)
     }
 
+    // 标签筛选
+    let tagJoin = ''
+    if (tagId) {
+      const tid = parseInt(tagId as string)
+      if (!isNaN(tid)) {
+        tagJoin = ' INNER JOIN transaction_tags tt_filter ON t.id = tt_filter.transaction_id'
+        where += ' AND tt_filter.tag_id = ?'
+        params.push(tid)
+      }
+    }
+
     const orderBy = sortBy === 'amount' ? 't.amount DESC' : 't.date DESC, t.created_at DESC'
 
     const [rows] = await pool.query(
@@ -114,6 +136,7 @@ router.get('/', async (req: AuthRequest, res: Response) => {
        FROM transactions t
        LEFT JOIN categories c ON t.category_id = c.id
        LEFT JOIN users u ON t.user_id = u.id
+       ${tagJoin}
        ${where}
        ORDER BY ${orderBy}
        LIMIT ? OFFSET ?`,
@@ -121,7 +144,7 @@ router.get('/', async (req: AuthRequest, res: Response) => {
     )
 
     const [countResult] = await pool.query(
-      `SELECT COUNT(*) as total FROM transactions t ${where}`,
+      `SELECT COUNT(*) as total FROM transactions t ${tagJoin} ${where}`,
       params
     )
 
@@ -130,7 +153,7 @@ router.get('/', async (req: AuthRequest, res: Response) => {
       `SELECT
         COALESCE(SUM(CASE WHEN t.type = 'expense' THEN t.amount ELSE 0 END), 0) as totalExpense,
         COALESCE(SUM(CASE WHEN t.type = 'income' THEN t.amount ELSE 0 END), 0) as totalIncome
-       FROM transactions t ${where}`,
+       FROM transactions t ${tagJoin} ${where}`,
       params
     )
 
@@ -153,7 +176,7 @@ router.get('/', async (req: AuthRequest, res: Response) => {
 
 router.post('/', async (req: AuthRequest, res: Response) => {
   try {
-    const { amount, type, category_id, note, date, group_id } = req.body
+    const { amount, type, category_id, note, date, group_id, tagIds } = req.body
     if (amount === undefined || amount === null || typeof amount !== 'number' || !Number.isInteger(amount) || amount <= 0 || amount > 999999999) {
       return res.status(400).json({ code: 40001, message: '金额必须为1-999999999之间的正整数（单位：分）' })
     }
@@ -182,21 +205,170 @@ router.post('/', async (req: AuthRequest, res: Response) => {
       }
     }
 
-    const [result] = await pool.query(
-      'INSERT INTO transactions (user_id, amount, type, category_id, note, date, group_id) VALUES (?, ?, ?, ?, ?, ?, ?)',
-      [req.userId, amount, type, category_id || null, note || null, date, validGroupId]
-    )
+    // 校验 tagIds
+    let validTagIds: number[] = []
+    if (tagIds && Array.isArray(tagIds)) {
+      if (tagIds.length > 5) {
+        return res.status(400).json({ code: 40001, message: '标签数量不能超过5个' })
+      }
+      const numTagIds = tagIds.map((id: any) => Number(id)).filter((id: number) => Number.isInteger(id) && id > 0)
+      if (numTagIds.length > 0) {
+        // 校验标签属于当前用户
+        const [tagRows] = await pool.query(
+          `SELECT id FROM tags WHERE id IN (${numTagIds.map(() => '?').join(',')}) AND user_id = ?`,
+          [...numTagIds, req.userId]
+        )
+        validTagIds = (tagRows as any[]).map(r => r.id)
+      }
+    }
 
-    res.json({ code: 0, data: { id: (result as any).insertId } })
+    const conn = await pool.getConnection()
+    try {
+      await conn.beginTransaction()
+
+      const [result] = await conn.query(
+        'INSERT INTO transactions (user_id, amount, type, category_id, note, date, group_id) VALUES (?, ?, ?, ?, ?, ?, ?)',
+        [req.userId, amount, type, category_id || null, note || null, date, validGroupId]
+      )
+
+      const insertId = (result as any).insertId
+
+      // 批量插入 transaction_tags
+      if (validTagIds.length > 0) {
+        const values = validTagIds.map(tagId => [insertId, tagId])
+        await conn.query(
+          `INSERT INTO transaction_tags (transaction_id, tag_id) VALUES ${values.map(() => '(?, ?)').join(', ')}`,
+          values.flat()
+        )
+      }
+
+      await conn.commit()
+      res.json({ code: 0, data: { id: insertId } })
+    } catch (err) {
+      await conn.rollback()
+      throw err
+    } finally {
+      conn.release()
+    }
   } catch (err) {
     console.error('[Transaction] POST error:', err)
     res.status(500).json({ code: 50000, message: '服务器错误' })
   }
 })
 
+// POST /import 必须在 /:id 之前注册，避免 Express 将 "import" 误当作 :id 参数
+router.post('/import', async (req: AuthRequest, res: Response) => {
+  try {
+    const { transactions } = req.body
+    if (!Array.isArray(transactions) || transactions.length === 0) {
+      return res.status(400).json({ code: 40001, message: '缺少交易数据' })
+    }
+    if (transactions.length > 1000) {
+      return res.status(400).json({ code: 40001, message: '单次导入不能超过1000条' })
+    }
+
+    // 逐条校验 & 去重
+    const validItems: Array<{ date: string; type: string; category_name: string; amount: number; note: string }> = []
+    const seen = new Set<string>()
+    let skipped = 0
+
+    for (const item of transactions) {
+      // 校验必填字段
+      if (!item.date || !item.type || item.amount === undefined || item.amount === null) {
+        skipped++
+        continue
+      }
+      // 校验日期格式
+      if (!DATE_REGEX.test(String(item.date))) {
+        skipped++
+        continue
+      }
+      // 校验类型
+      if (!VALID_TYPES.includes(item.type)) {
+        skipped++
+        continue
+      }
+      // 校验金额
+      const amt = Number(item.amount)
+      if (isNaN(amt) || !Number.isInteger(amt) || amt <= 0 || amt > 999999999) {
+        skipped++
+        continue
+      }
+
+      // 去重：按 date+type+amount+note 组合判重
+      const noteVal = item.note ? String(item.note).slice(0, 200) : ''
+      const dedupeKey = `${item.date}:${item.type}:${amt}:${noteVal}`
+      if (seen.has(dedupeKey)) {
+        skipped++
+        continue
+      }
+      seen.add(dedupeKey)
+
+      validItems.push({
+        date: String(item.date),
+        type: item.type,
+        category_name: item.category_name ? String(item.category_name) : '',
+        amount: amt,
+        note: noteVal
+      })
+    }
+
+    if (validItems.length === 0) {
+      return res.json({ code: 0, data: { imported: 0, skipped } })
+    }
+
+    // 预加载用户的分类映射（category_name → category_id）
+    const [catRows] = await pool.query(
+      'SELECT id, name FROM categories WHERE user_id = ?',
+      [req.userId]
+    )
+    const catMap = new Map<string, number>()
+    for (const row of catRows as any[]) {
+      catMap.set(row.name, row.id)
+    }
+
+    const conn = await pool.getConnection()
+    try {
+      await conn.beginTransaction()
+
+      let imported = 0
+      const BATCH_SIZE = 100
+
+      for (let i = 0; i < validItems.length; i += BATCH_SIZE) {
+        const batch = validItems.slice(i, i + BATCH_SIZE)
+        const values: any[] = []
+        const placeholders: string[] = []
+
+        for (const item of batch) {
+          const categoryId = catMap.get(item.category_name) || null
+          placeholders.push('(?, ?, ?, ?, ?, ?, ?)')
+          values.push(req.userId, item.amount, item.type, categoryId, item.note || null, item.date, null)
+        }
+
+        await conn.query(
+          `INSERT INTO transactions (user_id, amount, type, category_id, note, date, group_id) VALUES ${placeholders.join(', ')}`,
+          values
+        )
+        imported += batch.length
+      }
+
+      await conn.commit()
+      res.json({ code: 0, data: { imported, skipped } })
+    } catch (err) {
+      await conn.rollback()
+      throw err
+    } finally {
+      conn.release()
+    }
+  } catch (err) {
+    console.error('[Transaction] POST /import error:', err)
+    res.status(500).json({ code: 50000, message: '服务器错误' })
+  }
+})
+
 router.put('/:id', async (req: AuthRequest, res: Response) => {
   try {
-    const { amount, type, category_id, note, date } = req.body
+    const { amount, type, category_id, note, date, tagIds } = req.body
     if (amount === undefined || amount === null || typeof amount !== 'number' || !Number.isInteger(amount) || amount <= 0 || amount > 999999999) {
       return res.status(400).json({ code: 40001, message: '金额必须为1-999999999之间的正整数（单位：分）' })
     }
@@ -212,14 +384,64 @@ router.put('/:id', async (req: AuthRequest, res: Response) => {
     if (note && note.length > 200) {
       return res.status(400).json({ code: 40004, message: '备注不能超过200字' })
     }
-    const [result] = await pool.query(
-      'UPDATE transactions SET amount = ?, type = ?, category_id = ?, note = ?, date = ? WHERE id = ? AND user_id = ?',
-      [amount, type, category_id || null, note || null, date, req.params.id, req.userId]
-    )
-    if ((result as any).affectedRows === 0) {
-      return res.status(404).json({ code: 40400, message: '记录不存在' })
+
+    // 校验 tagIds
+    let validTagIds: number[] | null = null
+    if (tagIds !== undefined) {
+      if (!Array.isArray(tagIds)) {
+        return res.status(400).json({ code: 40001, message: 'tagIds格式无效' })
+      }
+      if (tagIds.length > 5) {
+        return res.status(400).json({ code: 40001, message: '标签数量不能超过5个' })
+      }
+      const numTagIds = tagIds.map((id: any) => Number(id)).filter((id: number) => Number.isInteger(id) && id > 0)
+      if (numTagIds.length > 0) {
+        const [tagRows] = await pool.query(
+          `SELECT id FROM tags WHERE id IN (${numTagIds.map(() => '?').join(',')}) AND user_id = ?`,
+          [...numTagIds, req.userId]
+        )
+        validTagIds = (tagRows as any[]).map(r => r.id)
+      } else {
+        validTagIds = []
+      }
+    }
+
+    const conn = await pool.getConnection()
+    try {
+      await conn.beginTransaction()
+
+      const [result] = await conn.query(
+        'UPDATE transactions SET amount = ?, type = ?, category_id = ?, note = ?, date = ? WHERE id = ? AND user_id = ?',
+        [amount, type, category_id || null, note || null, date, req.params.id, req.userId]
+      )
+      if ((result as any).affectedRows === 0) {
+        await conn.rollback()
+        return res.status(404).json({ code: 40400, message: '记录不存在' })
+      }
+
+      // 全量替换 tagIds
+      if (validTagIds !== null) {
+        await conn.query(
+          'DELETE FROM transaction_tags WHERE transaction_id = ?',
+          [req.params.id]
+        )
+        if (validTagIds.length > 0) {
+          const values = validTagIds.map(tagId => [req.params.id, tagId])
+          await conn.query(
+            `INSERT INTO transaction_tags (transaction_id, tag_id) VALUES ${values.map(() => '(?, ?)').join(', ')}`,
+            values.flat()
+          )
+        }
+      }
+
+      await conn.commit()
+      res.json({ code: 0 })
+    } catch (err) {
+      await conn.rollback()
+      throw err
+    } finally {
+      conn.release()
     }
-    res.json({ code: 0 })
   } catch (err) {
     console.error('[Transaction] PUT error:', err)
     res.status(500).json({ code: 50000, message: '服务器错误' })