diff --git a/client/src/api/admin.ts b/client/src/api/admin.ts
index bc4c138..ed1ba44 100644
--- a/client/src/api/admin.ts
+++ b/client/src/api/admin.ts
@@ -50,9 +50,13 @@ export function updateUserRole(id: number, role: 'user' | 'admin') {
   return request({ url: `/admin/users/${id}/status`, method: 'PUT', data: { role } })
 }
 
+export interface DeleteUserOptions {
+  confirmName: string
+}
+
 /** 删除用户 */
-export function deleteUser(id: number) {
-  return request({ url: `/admin/users/${id}`, method: 'DELETE' })
+export function deleteUser(id: number, options: DeleteUserOptions) {
+  return request({ url: `/admin/users/${id}`, method: 'DELETE', data: options })
 }
 
 // 健康检查类型从 @/api/health 导入
diff --git a/client/src/api/tag.ts b/client/src/api/tag.ts
index b8e87ba..e6f6f06 100644
--- a/client/src/api/tag.ts
+++ b/client/src/api/tag.ts
@@ -17,9 +17,13 @@ export interface TagStat {
   total_amount: number
 }
 
+export interface TagListResult {
+  list: Tag[]
+}
+
 /** 获取标签列表 */
 export function getTags() {
-  return request<Tag[]>({ url: '/tags' })
+  return request<Tag[] | TagListResult>({ url: '/tags' })
 }
 
 /** 创建标签 */
diff --git a/client/src/pages/add/index.vue b/client/src/pages/add/index.vue
index f54e6a3..f5c8d94 100644
--- a/client/src/pages/add/index.vue
+++ b/client/src/pages/add/index.vue
@@ -33,6 +33,8 @@
       size="large"
       :auto-focus="!viewId"
       :disabled="!!viewId"
+      @focus="amountFocused = true"
+      @blur="amountFocused = false"
       @confirm="save"
     />
 
@@ -65,10 +67,13 @@
         <Icon name="edit" :size="28" color="#8B7E7E" />
         <input class="extra-input" v-model="note" :disabled="!!viewId" placeholder="添加备注..." placeholder-class="placeholder" maxlength="200" @focus="!viewId && blurAmountEditor()" />
       </view>
-      <view class="extra-row" @tap="!viewId && openTagPicker">
+      <view class="extra-row" @tap="!viewId && 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 v-if="selectedTagIds.length === 0" class="tag-placeholder">
+            <text class="extra-text">选择标签（选填）</text>
+            <text class="tag-help">用于跨分类标记账单，便于筛选和统计</text>
+          </view>
           <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>
@@ -79,7 +84,11 @@
       </view>
     </view>
 
-
+    <view v-if="!viewId && !showSuccess && !amountFocused" class="page-save-bar">
+      <view class="page-save-btn" :class="{ disabled: saving }" @tap="save">
+        <text class="page-save-text">{{ saving ? '保存中...' : (editId ? '保存修改' : '保存') }}</text>
+      </view>
+    </view>
 
     <SaveSuccess
       v-if="!viewId"
@@ -94,6 +103,7 @@
     <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-desc">标签用于跨分类标记账单，例如“报销 / 家庭 / 旅行”，便于筛选和统计。</text>
         <text class="tag-modal-hint">最多选择 5 个标签</text>
         <scroll-view class="tag-modal-list" scroll-y>
           <view
@@ -155,6 +165,7 @@ const viewId = ref<number | null>(null)
 const showSuccess = ref(false)
 const scrollToCat = ref('')
 const todayStr = localToday
+const amountFocused = ref(false)
 const amountEditorRef = ref<InstanceType<typeof AmountEditor> | null>(null)
 // Remember last selected category per type
 const lastCatByType: Record<string, number | null> = { expense: null, income: null }
@@ -432,6 +443,31 @@ function goBack() {
   padding-bottom: calc(#{$numpad-h} + env(safe-area-inset-bottom));
 }
 
+.page-save-bar {
+  position: fixed;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 20;
+  padding: $space-md $space-xl calc($space-md + env(safe-area-inset-bottom));
+  background: linear-gradient(180deg, rgba(255, 250, 247, 0), $bg 28%);
+}
+
+.page-save-btn {
+  @include btn-primary;
+  width: 100%;
+
+  &.disabled {
+    opacity: 0.7;
+  }
+}
+
+.page-save-text {
+  color: $surface;
+  font-size: $font-lg;
+  font-weight: 600;
+}
+
 .header-fixed {
   @include sticky-header;
 }
@@ -594,6 +630,19 @@ function goBack() {
   min-width: 0;
 }
 
+.tag-placeholder {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 4rpx;
+  min-width: 0;
+}
+
+.tag-help {
+  font-size: $font-xs;
+  color: $text-muted;
+}
+
 .tag-chips {
   display: flex;
   flex-wrap: wrap;
@@ -626,6 +675,13 @@ function goBack() {
   padding: $space-lg $space-xl $space-xs;
 }
 
+.tag-modal-desc {
+  font-size: $font-sm;
+  color: $text-sec;
+  line-height: 1.5;
+  padding: 0 $space-xl $space-xs;
+}
+
 .tag-modal-hint {
   font-size: $font-sm;
   color: $text-muted;
diff --git a/client/src/pages/admin/users.vue b/client/src/pages/admin/users.vue
index 02b9253..af2e729 100644
--- a/client/src/pages/admin/users.vue
+++ b/client/src/pages/admin/users.vue
@@ -148,7 +148,7 @@ function handleDelete(user: AdminUser) {
     success: async (res) => {
       if (res.confirm) {
         try {
-          await deleteUser(user.id)
+          await deleteUser(user.id, { confirmName: user.nickname })
           list.value = list.value.filter(u => u.id !== user.id)
           uni.showToast({ title: '已删除', icon: 'success' })
         } catch (e: any) {
diff --git a/client/src/pages/bills/index.vue b/client/src/pages/bills/index.vue
index ea16442..eeee6de 100644
--- a/client/src/pages/bills/index.vue
+++ b/client/src/pages/bills/index.vue
@@ -149,6 +149,7 @@ let loadSeq = 0 // 请求序号，防止并发覆盖
 // Snackbar 删除撤销相关
 const snackbarVisible = ref(false)
 const snackbarMsg = ref('')
+let snackbarTimer: number | null = null
 
 // 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)
@@ -293,27 +294,40 @@ async function onDelete(item: any) {
     return
   }
   // 乐观删除：先从列表移除，显示 Snackbar 供撤销
-  txStore.startDelete(item.id)
+  const itemIndex = txList.value.findIndex(t => t.id === item.id)
+  const started = txStore.startDelete(item.id, item, itemIndex)
+  if (!started) {
+    uni.showToast({ title: '删除失败，请刷新后重试', icon: 'none' })
+    return
+  }
   txList.value = txList.value.filter(t => t.id !== item.id)
-  total.value--
+  total.value = Math.max(0, total.value - 1)
   // 更新筛选金额
   if (item.type === 'expense') {
     filteredExpense.value = Math.max(0, filteredExpense.value - item.amount)
   } else {
     filteredIncome.value = Math.max(0, filteredIncome.value - item.amount)
   }
-  // 显示 Snackbar
+  // 显示 Snackbar；清理旧定时器，避免连续删除时旧定时器误隐藏新提示
   snackbarMsg.value = '已删除 1 条记录'
   snackbarVisible.value = true
-  setTimeout(() => {
+  if (snackbarTimer) clearTimeout(snackbarTimer)
+  snackbarTimer = setTimeout(async () => {
     snackbarVisible.value = false
-  }, 3000)
+    snackbarTimer = null
+    const ok = await txStore.confirmDelete()
+    if (!ok) loadTx(true, true)
+  }, 3000) as unknown as number
 }
 
 /** 撤销删除 */
 function onUndoDelete() {
   txStore.cancelDelete()
   snackbarVisible.value = false
+  if (snackbarTimer) {
+    clearTimeout(snackbarTimer)
+    snackbarTimer = null
+  }
   // 重新加载以恢复完整列表
   loadTx(true)
 }
diff --git a/client/src/stores/tag.ts b/client/src/stores/tag.ts
index 6a3e289..52451d7 100644
--- a/client/src/stores/tag.ts
+++ b/client/src/stores/tag.ts
@@ -17,7 +17,7 @@ export const useTagStore = defineStore('tag', () => {
     loading.value = true
     try {
       const data = await api.getTags()
-      tags.value = Array.isArray(data) ? data : []
+      tags.value = Array.isArray(data) ? data : data.list || []
       lastFetchTime.value = Date.now()
     } catch {
       tags.value = []
diff --git a/client/src/stores/transaction.ts b/client/src/stores/transaction.ts
index afb521a..3fd3a03 100644
--- a/client/src/stores/transaction.ts
+++ b/client/src/stores/transaction.ts
@@ -69,23 +69,26 @@ export const useTransactionStore = defineStore('transaction', () => {
   }
 
   /** 开始删除（乐观：先从列表移除，3秒内可撤销） */
-  function startDelete(id: number) {
+  function startDelete(id: number, sourceItem?: api.Transaction, sourceIndex?: number) {
     // 如果有上一条待确认删除，立即确认（不能同时有两条）
     if (pendingDelete.value) {
       confirmDelete()
     }
 
     const idx = transactions.value.findIndex(t => t.id === id)
-    if (idx === -1) return
+    const item = idx !== -1 ? transactions.value[idx] : sourceItem
+    if (!item) return false
 
-    const item = transactions.value[idx]
-    transactions.value.splice(idx, 1)
+    if (idx !== -1) {
+      transactions.value.splice(idx, 1)
+    }
 
     const timer = setTimeout(() => {
       confirmDelete()
     }, 3000) as unknown as number
 
-    pendingDelete.value = { id, item, index: idx, timer }
+    pendingDelete.value = { id, item, index: idx !== -1 ? idx : sourceIndex ?? 0, timer }
+    return true
   }
 
   /** 撤销删除（恢复到原位置） */
@@ -98,9 +101,9 @@ export const useTransactionStore = defineStore('transaction', () => {
     pendingDelete.value = null
   }
 
-  /** 确认删除（实际调接口） */
-  async function confirmDelete() {
-    if (!pendingDelete.value) return
+  /** 确认删除（实际调接口），返回是否删除成功 */
+  async function confirmDelete(): Promise<boolean> {
+    if (!pendingDelete.value) return true
     const { id, index, timer } = pendingDelete.value
     const item = pendingDelete.value.item
     clearTimeout(timer)
@@ -108,10 +111,12 @@ export const useTransactionStore = defineStore('transaction', () => {
 
     try {
       await api.deleteTransaction(id)
+      return true
     } catch {
       // 接口失败，恢复
       transactions.value.splice(index, 0, item)
       uni.showToast({ title: '删除失败', icon: 'none' })
+      return false
     }
   }