diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..956a5f6
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,202 @@
+# AGENTS.md - EmailBill Project Guidelines
+
+Full-stack budget tracking app with .NET 10 backend and Vue 3 frontend.
+
+## Project Structure
+
+```
+EmailBill/
+├── Common/           # Shared utilities and abstractions
+├── Entity/           # Database entities (FreeSql ORM)
+├── Repository/       # Data access layer
+├── Service/          # Business logic layer
+├── WebApi/           # ASP.NET Core Web API
+├── WebApi.Test/      # Backend tests (xUnit)
+└── Web/              # Vue 3 frontend (Vite + Vant UI)
+```
+
+## Build & Test Commands
+
+### Backend (.NET 10)
+```bash
+# Build and run
+dotnet build EmailBill.sln
+dotnet run --project WebApi/WebApi.csproj
+
+# Run all tests
+dotnet test WebApi.Test/WebApi.Test.csproj
+
+# Run single test class
+dotnet test --filter "FullyQualifiedName~BudgetStatsTest"
+
+# Run single test method
+dotnet test --filter "FullyQualifiedName~BudgetStatsTest.GetCategoryStats_月度_Test"
+
+# Clean
+dotnet clean EmailBill.sln
+```
+
+### Frontend (Vue 3)
+```bash
+cd Web
+
+# Setup and dev
+pnpm install
+pnpm dev
+
+# Build and preview
+pnpm build
+pnpm preview
+
+# Lint and format
+pnpm lint          # ESLint with auto-fix
+pnpm format        # Prettier formatting
+```
+
+## C# Code Style
+
+**Namespaces & Imports:**
+- File-scoped namespaces: `namespace Entity;`
+- Global usings in `Common/GlobalUsings.cs`
+- Sort using statements alphabetically
+
+**Naming:**
+- Classes/Methods: `PascalCase`
+- Interfaces: `IPascalCase`
+- Private fields: `_camelCase`
+- Parameters/locals: `camelCase`
+
+**Entities:**
+- Inherit from `BaseEntity`
+- Use `[Column]` attributes for FreeSql ORM
+- IDs via Snowflake: `YitIdHelper.NextId()`
+- Use XML docs (`///`) for public APIs
+- **Chinese comments for business logic** (per `.github/csharpe.prompt.md`)
+
+**Best Practices:**
+- Use modern C# syntax (records, pattern matching, nullable types)
+- Use `IDateTimeProvider` instead of `DateTime.Now` for testability
+- Avoid deep nesting, keep code flat and readable
+- Reuse utilities from `Common` project
+
+**Example:**
+```csharp
+namespace Entity;
+
+/// <summary>
+/// 实体基类
+/// </summary>
+public abstract class BaseEntity
+{
+    [Column(IsPrimary = true)]
+    public long Id { get; set; } = YitIdHelper.NextId();
+    
+    public DateTime CreateTime { get; set; } = DateTime.Now;
+}
+```
+
+## Vue/TypeScript Style
+
+**Component Structure:**
+```vue
+<template>
+  <van-config-provider :theme="theme">
+    <div class="component-name">
+      <!-- Content -->
+    </div>
+  </van-config-provider>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useMessageStore } from '@/stores/message'
+
+const messageStore = useMessageStore()
+</script>
+
+<style scoped lang="scss">
+.component-name {
+  padding: 16px;
+}
+</style>
+```
+
+**Rules:**
+- Composition API with `<script setup lang="ts">`
+- Import order: Vue APIs → external libs → internal modules
+- Use `@/` alias for absolute imports, avoid `../../../`
+- Vant UI components: `<van-*>`
+- Pinia for state, Vue Router for navigation
+- SCSS with BEM naming, mobile-first design
+
+**ESLint Rules (see `Web/eslint.config.js`):**
+- 2-space indentation
+- Single quotes, no semicolons
+- `const` over `let`, no `var`
+- Always use `===` (strict equality)
+- `space-before-function-paren: 'always'`
+- Max 1 empty line between blocks
+- Vue: multi-word component names disabled
+
+**Prettier Rules (see `Web/.prettierrc.json`):**
+- Single quotes, no semicolons
+- Trailing commas: none
+- Print width: 100 chars
+
+## Testing
+
+**Backend (xUnit + NSubstitute + FluentAssertions):**
+```csharp
+public class BudgetStatsTest : BaseTest
+{
+    private readonly IBudgetRepository _repo = Substitute.For<IBudgetRepository>();
+    
+    [Fact]
+    public async Task GetCategoryStats_月度_Test()
+    {
+        // Arrange
+        _repo.GetAllAsync().Returns(testData);
+        
+        // Act
+        var result = await _service.GetCategoryStatsAsync(category, date);
+        
+        // Assert
+        result.Month.Limit.Should().Be(2500);
+    }
+}
+```
+- Arrange-Act-Assert pattern
+- Constructor injection for dependencies
+- Use Chinese test method names for domain clarity
+
+**Frontend:**
+- Vue Test Utils for components
+- axios-mock-adapter for API mocking
+
+## Development Workflow
+
+1. **Before committing backend:** `dotnet test`
+2. **Before committing frontend:** `pnpm lint && pnpm build`
+3. **Database migrations:** Use FreeSql (check `Repository/`)
+4. **API docs:** Scalar OpenAPI viewer
+
+## Environment
+
+**Required:**
+- .NET 10 SDK
+- Node.js 20.19+ or 22.12+
+- pnpm
+
+**Database:** SQLite (embedded)
+
+**Config:**
+- Backend: `appsettings.json`
+- Frontend: `.env.development` / `.env.production`
+
+## Critical Guidelines (from `.github/csharpe.prompt.md`)
+
+- 优先使用新C#语法 (Use modern C# syntax)
+- 优先使用中文注释 (Prefer Chinese comments for business logic)
+- 优先复用已有方法 (Reuse existing methods)
+- 不要深嵌套代码 (Avoid deep nesting)
+- 保持代码简洁易读 (Keep code clean and readable)
\ No newline at end of file
diff --git a/Entity/TransactionRecord.cs b/Entity/TransactionRecord.cs
index 96d0662..e6aa6ea 100644
--- a/Entity/TransactionRecord.cs
+++ b/Entity/TransactionRecord.cs
@@ -1,4 +1,4 @@
-namespace Entity;
+namespace Entity;
 
 /// <summary>
 /// 银行交易记录（由邮件解析生成）
@@ -18,12 +18,7 @@ public class TransactionRecord : BaseEntity
     /// <summary>
     /// 交易金额
     /// </summary>
-    public decimal Amount { get; set; }
-
-    /// <summary>
-    /// 退款金额
-    /// </summary>
-    public decimal RefundAmount { get; set; }
+public decimal Amount { get; set; }
 
     /// <summary>
     /// 交易后余额
diff --git a/Repository/TransactionRecordRepository.cs b/Repository/TransactionRecordRepository.cs
index 398cffa..efe5564 100644
--- a/Repository/TransactionRecordRepository.cs
+++ b/Repository/TransactionRecordRepository.cs
@@ -1,4 +1,4 @@
-namespace Repository;
+namespace Repository;
 
 public interface ITransactionRecordRepository : IBaseRepository<TransactionRecord>
 {
@@ -176,16 +176,7 @@ public interface ITransactionRecordRepository : IBaseRepository<TransactionRecor
     /// <param name="minMatchRate">最小匹配率（0.0-1.0），默认0.3表示至少匹配30%的关键词</param>
     /// <param name="limit">返回结果数量限制</param>
     /// <returns>带相关度分数的已分类账单列表</returns>
-    Task<List<(TransactionRecord record, double relevanceScore)>> GetClassifiedByKeywordsWithScoreAsync(List<string> keywords, double minMatchRate = 0.3, int limit = 10);
-
-    /// <summary>
-    /// 获取抵账候选列表
-    /// </summary>
-    /// <param name="currentId">当前交易ID</param>
-    /// <param name="amount">当前交易金额</param>
-    /// <param name="currentType">当前交易类型</param>
-    /// <returns>候选交易列表</returns>
-    Task<List<TransactionRecord>> GetCandidatesForOffsetAsync(long currentId, decimal amount, TransactionType currentType);
+Task<List<(TransactionRecord record, double relevanceScore)>> GetClassifiedByKeywordsWithScoreAsync(List<string> keywords, double minMatchRate = 0.3, int limit = 10);
 
     /// <summary>
     /// 获取待确认分类的账单列表
@@ -673,34 +664,7 @@ public class TransactionRecordRepository(IFreeSql freeSql) : BaseRepository<Tran
             .Take(limit)
             .ToList();
 
-        return scoredResults;
-    }
-
-    public async Task<List<TransactionRecord>> GetCandidatesForOffsetAsync(long currentId, decimal amount, TransactionType currentType)
-    {
-        var absAmount = Math.Abs(amount);
-        var minAmount = absAmount - 5;
-        var maxAmount = absAmount + 5;
-
-        var currentRecord = await FreeSql.Select<TransactionRecord>()
-            .Where(t => t.Id == currentId)
-            .FirstAsync();
-
-        if (currentRecord == null)
-        {
-            return [];
-        }
-
-        var list = await FreeSql.Select<TransactionRecord>()
-            .Where(t => t.Id != currentId)
-            .Where(t => t.Type != currentType)
-            .Where(t => Math.Abs(t.Amount) >= minAmount && Math.Abs(t.Amount) <= maxAmount)
-            .Take(50)
-            .ToListAsync();
-
-        return list.OrderBy(t => Math.Abs(Math.Abs(t.Amount) - absAmount))
-            .ThenBy(x => Math.Abs((x.OccurredAt - currentRecord.OccurredAt).TotalSeconds))
-            .ToList();
+return scoredResults;
     }
 
     public async Task<int> UpdateCategoryNameAsync(string oldName, string newName, TransactionType type)
@@ -769,7 +733,7 @@ public class TransactionRecordRepository(IFreeSql freeSql) : BaseRepository<Tran
             {
                 g.Key.Classify,
                 g.Key.Type,
-                TotalAmount = g.Sum(g.Value.Amount - g.Value.RefundAmount)
+TotalAmount = g.Sum(g.Value.Amount)
             });
 
         return result.ToDictionary(x => (x.Classify, x.Type), x => x.TotalAmount);
diff --git a/Service/SmartHandleService.cs b/Service/SmartHandleService.cs
index 0f40f76..f34332b 100644
--- a/Service/SmartHandleService.cs
+++ b/Service/SmartHandleService.cs
@@ -1,4 +1,4 @@
-namespace Service;
+namespace Service;
 
 public interface ISmartHandleService
 {
diff --git a/Web/src/api/budget.js b/Web/src/api/budget.js
index 8876fd9..8ca7f19 100644
--- a/Web/src/api/budget.js
+++ b/Web/src/api/budget.js
@@ -4,7 +4,7 @@
  * 获取预算列表
  * @param {string} referenceDate 参考日期 (可选)
  */
-export function getBudgetList(referenceDate) {
+export function getBudgetList (referenceDate) {
   return request({
     url: '/Budget/GetList',
     method: 'get',
@@ -16,7 +16,7 @@ export function getBudgetList(referenceDate) {
  * 创建预算
  * @param {object} data 预算数据
  */
-export function createBudget(data) {
+export function createBudget (data) {
   return request({
     url: '/Budget/Create',
     method: 'post',
@@ -28,7 +28,7 @@ export function createBudget(data) {
  * 更新预算
  * @param {object} data 预算数据
  */
-export function updateBudget(data) {
+export function updateBudget (data) {
   return request({
     url: '/Budget/Update',
     method: 'post',
@@ -40,7 +40,7 @@ export function updateBudget(data) {
  * 删除预算
  * @param {number} id 预算ID
  */
-export function deleteBudget(id) {
+export function deleteBudget (id) {
   return request({
     url: `/Budget/DeleteById/${id}`,
     method: 'delete'
@@ -52,7 +52,7 @@ export function deleteBudget(id) {
  * @param {string} category 分类 (Expense/Income/Savings)
  * @param {string} referenceDate 参考日期 (可选)
  */
-export function getCategoryStats(category, referenceDate) {
+export function getCategoryStats (category, referenceDate) {
   return request({
     url: '/Budget/GetCategoryStats',
     method: 'get',
@@ -64,7 +64,7 @@ export function getCategoryStats(category, referenceDate) {
  * @param {number} category 预算分类
  * @param {string} referenceDate 参考日期
  */
-export function getUncoveredCategories(category, referenceDate) {
+export function getUncoveredCategories (category, referenceDate) {
   return request({
     url: '/Budget/GetUncoveredCategories',
     method: 'get',
@@ -76,7 +76,7 @@ export function getUncoveredCategories(category, referenceDate) {
  * 获取归档总结
  * @param {string} referenceDate 参考日期
  */
-export function getArchiveSummary(referenceDate) {
+export function getArchiveSummary (referenceDate) {
   return request({
     url: '/Budget/GetArchiveSummary',
     method: 'get',
@@ -88,7 +88,7 @@ export function getArchiveSummary(referenceDate) {
  * 更新归档总结
  * @param {object} data 数据 { referenceDate, summary }
  */
-export function updateArchiveSummary(data) {
+export function updateArchiveSummary (data) {
   return request({
     url: '/Budget/UpdateArchiveSummary',
     method: 'post',
@@ -102,7 +102,7 @@ export function updateArchiveSummary(data) {
  * @param {number} month 月份
  * @param {number} type 周期类型 (1:Month, 2:Year)
  */
-export function getSavingsBudget(year, month, type) {
+export function getSavingsBudget (year, month, type) {
   return request({
     url: '/Budget/GetSavingsBudget',
     method: 'get',
diff --git a/Web/src/api/notification.js b/Web/src/api/notification.js
index 3916917..2617369 100644
--- a/Web/src/api/notification.js
+++ b/Web/src/api/notification.js
@@ -1,13 +1,13 @@
 import request from './request'
 
-export function getVapidPublicKey() {
+export function getVapidPublicKey () {
   return request({
     url: '/Notification/GetVapidPublicKey',
     method: 'get'
   })
 }
 
-export function subscribe(data) {
+export function subscribe (data) {
   return request({
     url: '/Notification/Subscribe',
     method: 'post',
@@ -15,7 +15,7 @@ export function subscribe(data) {
   })
 }
 
-export function testNotification(message) {
+export function testNotification (message) {
   return request({
     url: '/Notification/TestNotification',
     method: 'post',
diff --git a/Web/src/api/request.js b/Web/src/api/request.js
index 7fe193b..060fc4f 100644
--- a/Web/src/api/request.js
+++ b/Web/src/api/request.js
@@ -14,7 +14,7 @@ const request = axios.create({
 
 // 生成请求ID
 const generateRequestId = () => {
-  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
     const r = Math.random() * 16 | 0
     const v = c === 'x' ? r : (r & 0x3 | 0x8)
     return v.toString(16)
@@ -29,11 +29,11 @@ request.interceptors.request.use(
     if (authStore.token) {
       config.headers.Authorization = `Bearer ${authStore.token}`
     }
-    
+
     // 添加请求ID
     const requestId = generateRequestId()
     config.headers['X-Request-ID'] = requestId
-    
+
     return config
   },
   (error) => {
diff --git a/Web/src/api/statistics.js b/Web/src/api/statistics.js
index 373bbcd..8311512 100644
--- a/Web/src/api/statistics.js
+++ b/Web/src/api/statistics.js
@@ -87,8 +87,6 @@ export const getDailyStatistics = (params) => {
   })
 }
 
-
-
 /**
  * 获取累积余额统计数据（用于余额卡片）
  * @param {Object} params - 查询参数
diff --git a/Web/src/api/transactionRecord.js b/Web/src/api/transactionRecord.js
index 0ef7021..de2840a 100644
--- a/Web/src/api/transactionRecord.js
+++ b/Web/src/api/transactionRecord.js
@@ -1,4 +1,4 @@
-import request from './request'
+import request from './request'
 
 /**
  * 交易记录相关 API
@@ -223,32 +223,6 @@ export const nlpAnalysis = (userInput) => {
   })
 }
 
-/**
- * 获取抵账候选列表
- * @param {number} id - 当前交易ID
- * @returns {Promise<{success: boolean, data: Array}>}
- */
-export const getCandidatesForOffset = (id) => {
-  return request({
-    url: `/TransactionRecord/GetCandidatesForOffset/${id}`,
-    method: 'get'
-  })
-}
-
-/**
- * 抵账（删除两笔交易）
- * @param {number} id1 - 交易ID 1
- * @param {number} id2 - 交易ID 2
- * @returns {Promise<{success: boolean}>}
- */
-export const offsetTransactions = (id1, id2) => {
-  return request({
-    url: '/TransactionRecord/OffsetTransactions',
-    method: 'post',
-    data: { id1, id2 }
-  })
-}
-
 /**
  * 一句话录账解析
  * @param {string} text - 用户输入的自然语言文本
diff --git a/Web/src/components/Bill/BillForm.vue b/Web/src/components/Bill/BillForm.vue
index 7f32a30..1a27c40 100644
--- a/Web/src/components/Bill/BillForm.vue
+++ b/Web/src/components/Bill/BillForm.vue
@@ -38,30 +38,58 @@
         />
 
         <!-- 交易类型 -->
-        <van-field name="type" label="类型">
+        <van-field
+          name="type"
+          label="类型"
+        >
           <template #input>
-            <van-radio-group v-model="form.type" direction="horizontal" @change="handleTypeChange">
-              <van-radio :name="0"> 支出 </van-radio>
-              <van-radio :name="1"> 收入 </van-radio>
-              <van-radio :name="2"> 不计 </van-radio>
+            <van-radio-group
+              v-model="form.type"
+              direction="horizontal"
+              @change="handleTypeChange"
+            >
+              <van-radio :name="0">
+                支出
+              </van-radio>
+              <van-radio :name="1">
+                收入
+              </van-radio>
+              <van-radio :name="2">
+                不计
+              </van-radio>
             </van-radio-group>
           </template>
         </van-field>
 
         <!-- 分类 -->
-        <van-field name="category" label="分类">
+        <van-field
+          name="category"
+          label="分类"
+        >
           <template #input>
-            <span v-if="!categoryName" style="color: var(--van-text-color-3)">请选择分类</span>
+            <span
+              v-if="!categoryName"
+              style="color: var(--van-text-color-3)"
+            >请选择分类</span>
             <span v-else>{{ categoryName }}</span>
           </template>
         </van-field>
 
         <!-- 分类选择组件 -->
-        <ClassifySelector v-model="categoryName" :type="form.type" />
+        <ClassifySelector
+          v-model="categoryName"
+          :type="form.type"
+        />
       </van-cell-group>
 
       <div class="actions">
-        <van-button round block type="primary" native-type="submit" :loading="loading">
+        <van-button
+          round
+          block
+          type="primary"
+          native-type="submit"
+          :loading="loading"
+        >
           {{ submitText }}
         </van-button>
         <slot name="actions" />
@@ -69,7 +97,12 @@
     </van-form>
 
     <!-- 日期选择弹窗 -->
-    <van-popup v-model:show="showDatePicker" position="bottom" round teleport="body">
+    <van-popup
+      v-model:show="showDatePicker"
+      position="bottom"
+      round
+      teleport="body"
+    >
       <van-date-picker
         v-model="currentDate"
         title="选择日期"
@@ -79,7 +112,12 @@
     </van-popup>
 
     <!-- 时间选择弹窗 -->
-    <van-popup v-model:show="showTimePicker" position="bottom" round teleport="body">
+    <van-popup
+      v-model:show="showTimePicker"
+      position="bottom"
+      round
+      teleport="body"
+    >
       <van-time-picker
         v-model="currentTime"
         title="选择时间"
diff --git a/Web/src/components/Bill/ManualBillAdd.vue b/Web/src/components/Bill/ManualBillAdd.vue
index 522d5f9..b1d5846 100644
--- a/Web/src/components/Bill/ManualBillAdd.vue
+++ b/Web/src/components/Bill/ManualBillAdd.vue
@@ -1,6 +1,10 @@
 <template>
   <div class="manual-bill-add">
-    <BillForm ref="billFormRef" :loading="saving" @submit="handleSave" />
+    <BillForm
+      ref="billFormRef"
+      :loading="saving"
+      @submit="handleSave"
+    />
   </div>
 </template>
 
diff --git a/Web/src/components/Bill/OneLineBillAdd.vue b/Web/src/components/Bill/OneLineBillAdd.vue
index 0edee28..3ba384c 100644
--- a/Web/src/components/Bill/OneLineBillAdd.vue
+++ b/Web/src/components/Bill/OneLineBillAdd.vue
@@ -1,6 +1,10 @@
 <template>
   <div>
-    <div v-if="!parseResult" class="input-section" style="margin: 12px 12px 0 16px">
+    <div
+      v-if="!parseResult"
+      class="input-section"
+      style="margin: 12px 12px 0 16px"
+    >
       <van-field
         v-model="text"
         type="textarea"
@@ -23,7 +27,10 @@
       </div>
     </div>
 
-    <div v-if="parseResult" class="result-section">
+    <div
+      v-if="parseResult"
+      class="result-section"
+    >
       <BillForm
         :initial-data="parseResult"
         :loading="saving"
@@ -31,7 +38,13 @@
         @submit="handleSave"
       >
         <template #actions>
-          <van-button plain round block class="mt-2" @click="parseResult = null">
+          <van-button
+            plain
+            round
+            block
+            class="mt-2"
+            @click="parseResult = null"
+          >
             重新输入
           </van-button>
         </template>
diff --git a/Web/src/components/Budget/BudgetSummary.vue b/Web/src/components/Budget/BudgetSummary.vue
index c0232ae..390421c 100644
--- a/Web/src/components/Budget/BudgetSummary.vue
+++ b/Web/src/components/Budget/BudgetSummary.vue
@@ -1,21 +1,35 @@
 <template>
   <div class="summary-container">
-    <transition :name="transitionName" mode="out-in">
+    <transition
+      :name="transitionName"
+      mode="out-in"
+    >
       <div
         v-if="stats && (stats.month || stats.year)"
         :key="dateKey"
         class="summary-card common-card"
       >
         <!-- 左切换按钮 -->
-        <div class="nav-arrow left" @click.stop="changeMonth(-1)">
+        <div
+          class="nav-arrow left"
+          @click.stop="changeMonth(-1)"
+        >
           <van-icon name="arrow-left" />
         </div>
 
         <div class="summary-content">
-          <template v-for="(config, key) in periodConfigs" :key="key">
+          <template
+            v-for="(config, key) in periodConfigs"
+            :key="key"
+          >
             <div class="summary-item">
-              <div class="label">{{ config.label }}{{ title }}率</div>
-              <div class="value" :class="getValueClass(stats[key]?.rate || '0.0')">
+              <div class="label">
+                {{ config.label }}{{ title }}率
+              </div>
+              <div
+                class="value"
+                :class="getValueClass(stats[key]?.rate || '0.0')"
+              >
                 {{ stats[key]?.rate || '0.0' }}<span class="unit">%</span>
               </div>
               <div class="sub-info">
@@ -24,7 +38,10 @@
                 <span class="amount">¥{{ formatMoney(stats[key]?.limit || 0) }}</span>
               </div>
             </div>
-            <div v-if="config.showDivider" class="divider" />
+            <div
+              v-if="config.showDivider"
+              class="divider"
+            />
           </template>
         </div>
 
@@ -38,7 +55,10 @@
         </div>
 
         <!-- 非本月时显示的日期标识 -->
-        <div v-if="!isCurrentMonth" class="date-tag">
+        <div
+          v-if="!isCurrentMonth"
+          class="date-tag"
+        >
           {{ props.date.getFullYear() }}年{{ props.date.getMonth() + 1 }}月
         </div>
       </div>
diff --git a/Web/src/components/Budget/SavingsConfigPopup.vue b/Web/src/components/Budget/SavingsConfigPopup.vue
index 97c60cb..481a162 100644
--- a/Web/src/components/Budget/SavingsConfigPopup.vue
+++ b/Web/src/components/Budget/SavingsConfigPopup.vue
@@ -1,12 +1,20 @@
 <template>
-  <PopupContainer v-model="visible" title="设置存款分类" height="60%">
+  <PopupContainer
+    v-model="visible"
+    title="设置存款分类"
+    height="60%"
+  >
     <div class="savings-config-content">
       <div class="config-header">
-        <p class="subtitle">这些分类的统计值将计入“存款”中</p>
+        <p class="subtitle">
+          这些分类的统计值将计入“存款”中
+        </p>
       </div>
 
       <div class="category-section">
-        <div class="section-title">可多选分类</div>
+        <div class="section-title">
+          可多选分类
+        </div>
         <ClassifySelector
           v-model="selectedCategories"
           :type="2"
@@ -18,7 +26,14 @@
     </div>
 
     <template #footer>
-      <van-button block round type="primary" @click="onSubmit"> 保存配置 </van-button>
+      <van-button
+        block
+        round
+        type="primary"
+        @click="onSubmit"
+      >
+        保存配置
+      </van-button>
     </template>
   </PopupContainer>
 </template>
diff --git a/Web/src/components/Global/GlobalAddBill.vue b/Web/src/components/Global/GlobalAddBill.vue
index 707e5e2..c86098e 100644
--- a/Web/src/components/Global/GlobalAddBill.vue
+++ b/Web/src/components/Global/GlobalAddBill.vue
@@ -1,18 +1,40 @@
 <template>
   <div class="global-add-bill">
     <!-- Floating Add Bill Button -->
-    <div class="floating-add" @click="openAddBill">
+    <div
+      class="floating-add"
+      @click="openAddBill"
+    >
       <van-icon name="plus" />
     </div>
 
     <!-- Add Bill Modal -->
-    <PopupContainer v-model="showAddBill" title="记一笔" height="75%">
-      <van-tabs v-model:active="activeTab" shrink>
-        <van-tab title="一句话录账" name="one">
-          <OneLineBillAdd :key="componentKey" @success="handleSuccess" />
+    <PopupContainer
+      v-model="showAddBill"
+      title="记一笔"
+      height="75%"
+    >
+      <van-tabs
+        v-model:active="activeTab"
+        shrink
+      >
+        <van-tab
+          title="一句话录账"
+          name="one"
+        >
+          <OneLineBillAdd
+            :key="componentKey"
+            @success="handleSuccess"
+          />
         </van-tab>
-        <van-tab title="手动录账" name="manual">
-          <ManualBillAdd :key="componentKey" @success="handleSuccess" />
+        <van-tab
+          title="手动录账"
+          name="manual"
+        >
+          <ManualBillAdd
+            :key="componentKey"
+            @success="handleSuccess"
+          />
         </van-tab>
       </van-tabs>
     </PopupContainer>
diff --git a/Web/src/components/PopupContainer.vue b/Web/src/components/PopupContainer.vue
index 7462f8a..61606fa 100644
--- a/Web/src/components/PopupContainer.vue
+++ b/Web/src/components/PopupContainer.vue
@@ -12,21 +12,36 @@
       <!-- 头部区域 -->
       <div class="popup-header-fixed">
         <!-- 标题行 (无子标题且有操作时使用 Grid 布局) -->
-        <div class="header-title-row" :class="{ 'has-actions': !subtitle && hasActions }">
+        <div
+          class="header-title-row"
+          :class="{ 'has-actions': !subtitle && hasActions }"
+        >
           <h3 class="popup-title">
             {{ title }}
           </h3>
           <!-- 无子标题时，操作按钮与标题同行 -->
-          <div v-if="!subtitle && hasActions" class="header-actions-inline">
+          <div
+            v-if="!subtitle && hasActions"
+            class="header-actions-inline"
+          >
             <slot name="header-actions" />
           </div>
         </div>
 
         <!-- 子标题/统计信息 -->
-        <div v-if="subtitle" class="header-stats">
-          <span class="stats-text" v-html="subtitle" />
+        <div
+          v-if="subtitle"
+          class="header-stats"
+        >
+          <span
+            class="stats-text"
+            v-html="subtitle"
+          />
           <!-- 额外操作插槽 -->
-          <slot v-if="hasActions" name="header-actions" />
+          <slot
+            v-if="hasActions"
+            name="header-actions"
+          />
         </div>
       </div>
 
@@ -36,7 +51,10 @@
       </div>
 
       <!-- 底部页脚，固定不可滚动 -->
-      <div v-if="slots.footer" class="popup-footer-fixed">
+      <div
+        v-if="slots.footer"
+        class="popup-footer-fixed"
+      >
         <slot name="footer" />
       </div>
     </div>
diff --git a/Web/src/components/TransactionDetail.vue b/Web/src/components/TransactionDetail.vue
index e6ec421..0fffcda 100644
--- a/Web/src/components/TransactionDetail.vue
+++ b/Web/src/components/TransactionDetail.vue
@@ -1,15 +1,22 @@
-<template>
-  <PopupContainer v-model="visible" title="交易详情" height="75%" :closeable="false">
-    <template #header-actions>
-      <van-button size="small" type="primary" plain @click="handleOffsetClick"> 抵账 </van-button>
-    </template>
-
+<template>
+  <PopupContainer
+    v-model="visible"
+    title="交易详情"
+    height="75%"
+    :closeable="false"
+  >
     <van-form style="margin-top: 12px">
       <van-cell-group inset>
-        <van-cell title="记录时间" :value="formatDate(transaction.createTime)" />
+        <van-cell
+          title="记录时间"
+          :value="formatDate(transaction.createTime)"
+        />
       </van-cell-group>
 
-      <van-cell-group inset title="交易明细">
+      <van-cell-group
+        inset
+        title="交易明细"
+      >
         <van-field
           v-model="occurredAtLabel"
           name="occurredAt"
@@ -48,50 +55,68 @@
           :rules="[{ required: true, message: '请输入交易后余额' }]"
         />
 
-        <van-field name="type" label="交易类型">
+        <van-field
+          name="type"
+          label="交易类型"
+        >
           <template #input>
             <van-radio-group
               v-model="editForm.type"
               direction="horizontal"
               @change="handleTypeChange"
             >
-              <van-radio :name="0"> 支出 </van-radio>
-              <van-radio :name="1"> 收入 </van-radio>
-              <van-radio :name="2"> 不计 </van-radio>
+              <van-radio :name="0">
+                支出
+              </van-radio>
+              <van-radio :name="1">
+                收入
+              </van-radio>
+              <van-radio :name="2">
+                不计
+              </van-radio>
             </van-radio-group>
           </template>
         </van-field>
 
-        <van-field name="classify" label="交易分类">
+        <van-field
+          name="classify"
+          label="交易分类"
+        >
           <template #input>
             <div style="flex: 1">
               <div
                 v-if="
                   transaction &&
-                  transaction.unconfirmedClassify &&
-                  transaction.unconfirmedClassify !== editForm.classify
+                    transaction.unconfirmedClassify &&
+                    transaction.unconfirmedClassify !== editForm.classify
                 "
                 class="suggestion-tip"
                 @click="applySuggestion"
               >
-                <van-icon name="bulb-o" class="suggestion-icon" />
+                <van-icon
+                  name="bulb-o"
+                  class="suggestion-icon"
+                />
                 <span class="suggestion-text">
                   建议: {{ transaction.unconfirmedClassify }}
                   <span
                     v-if="
                       transaction.unconfirmedType !== null &&
-                      transaction.unconfirmedType !== undefined &&
-                      transaction.unconfirmedType !== editForm.type
+                        transaction.unconfirmedType !== undefined &&
+                        transaction.unconfirmedType !== editForm.type
                     "
                   >
                     ({{ getTypeName(transaction.unconfirmedType) }})
                   </span>
                 </span>
-                <div class="suggestion-apply">应用</div>
+                <div class="suggestion-apply">
+                  应用
+                </div>
               </div>
-              <span v-else-if="!editForm.classify" style="color: var(--van-gray-5)"
-                >请选择交易分类</span
-              >
+              <span
+                v-else-if="!editForm.classify"
+                style="color: var(--van-gray-5)"
+              >请选择交易分类</span>
               <span v-else>{{ editForm.classify }}</span>
             </div>
           </template>
@@ -106,30 +131,25 @@
     </van-form>
 
     <template #footer>
-      <van-button round block type="primary" :loading="submitting" @click="onSubmit">
+      <van-button
+        round
+        block
+        type="primary"
+        :loading="submitting"
+        @click="onSubmit"
+      >
         保存修改
       </van-button>
     </template>
   </PopupContainer>
 
-  <!-- 抵账候选列表弹窗 -->
-  <PopupContainer v-model="showOffsetPopup" title="选择抵账交易" height="75%">
-    <van-list>
-      <van-cell
-        v-for="item in offsetCandidates"
-        :key="item.id"
-        :title="item.reason"
-        :label="formatDate(item.occurredAt)"
-        :value="item.amount"
-        is-link
-        @click="handleCandidateSelect(item)"
-      />
-      <van-empty v-if="offsetCandidates.length === 0" description="暂无匹配的抵账交易" />
-    </van-list>
-  </PopupContainer>
-
   <!-- 日期选择弹窗 -->
-  <van-popup v-model:show="showDatePicker" position="bottom" round teleport="body">
+  <van-popup
+    v-model:show="showDatePicker"
+    position="bottom"
+    round
+    teleport="body"
+  >
     <van-date-picker
       v-model="currentDate"
       title="选择日期"
@@ -139,7 +159,12 @@
   </van-popup>
 
   <!-- 时间选择弹窗 -->
-  <van-popup v-model:show="showTimePicker" position="bottom" round teleport="body">
+  <van-popup
+    v-model:show="showTimePicker"
+    position="bottom"
+    round
+    teleport="body"
+  >
     <van-time-picker
       v-model="currentTime"
       title="选择时间"
@@ -151,14 +176,12 @@
 
 <script setup>
 import { ref, reactive, watch, defineProps, defineEmits, computed, nextTick } from 'vue'
-import { showToast, showConfirmDialog } from 'vant'
+import { showToast } from 'vant'
 import dayjs from 'dayjs'
 import PopupContainer from '@/components/PopupContainer.vue'
 import ClassifySelector from '@/components/ClassifySelector.vue'
 import {
-  updateTransaction,
-  getCandidatesForOffset,
-  offsetTransactions
+  updateTransaction
 } from '@/api/transactionRecord'
 
 const props = defineProps({
@@ -341,50 +364,6 @@ const formatDate = (dateString) => {
   })
 }
 
-// 抵账相关
-const showOffsetPopup = ref(false)
-const offsetCandidates = ref([])
-
-const handleOffsetClick = async () => {
-  try {
-    const res = await getCandidatesForOffset(editForm.id)
-    if (res.success) {
-      offsetCandidates.value = res.data || []
-      showOffsetPopup.value = true
-    } else {
-      showToast(res.message || '获取抵账列表失败')
-    }
-  } catch (error) {
-    console.error('获取抵账列表出错:', error)
-    showToast('获取抵账列表失败')
-  }
-}
-
-const handleCandidateSelect = (candidate) => {
-  showConfirmDialog({
-    title: '确认抵账',
-    message: `确认将当前交易与 "${candidate.reason}" (${candidate.amount}) 互相抵消吗？\n抵消后两笔交易将被删除。`
-  })
-    .then(async () => {
-      try {
-        const res = await offsetTransactions(editForm.id, candidate.id)
-        if (res.success) {
-          showToast('抵账成功')
-          showOffsetPopup.value = false
-          visible.value = false
-          emit('save') // 触发列表刷新
-        } else {
-          showToast(res.message || '抵账失败')
-        }
-      } catch (error) {
-        console.error('抵账出错:', error)
-        showToast('抵账失败')
-      }
-    })
-    .catch(() => {
-      // on cancel
-    })
-}
 </script>
 
 <style scoped>
diff --git a/Web/src/components/TransactionList.vue b/Web/src/components/TransactionList.vue
index 0870b9f..6a66818 100644
--- a/Web/src/components/TransactionList.vue
+++ b/Web/src/components/TransactionList.vue
@@ -1,7 +1,16 @@
-<template>
+<template>
   <div class="transaction-list-container transaction-list">
-    <van-list :loading="loading" :finished="finished" finished-text="没有更多了" @load="onLoad">
-      <van-cell-group v-if="transactions && transactions.length" inset style="margin-top: 10px">
+    <van-list
+      :loading="loading"
+      :finished="finished"
+      finished-text="没有更多了"
+      @load="onLoad"
+    >
+      <van-cell-group
+        v-if="transactions && transactions.length"
+        inset
+        style="margin-top: 10px"
+      >
         <van-swipe-cell
           v-for="transaction in transactions"
           :key="transaction.id"
@@ -14,7 +23,10 @@
               class="checkbox-col"
               @update:model-value="toggleSelection(transaction)"
             />
-            <div class="transaction-card" @click="handleClick(transaction)">
+            <div
+              class="transaction-card"
+              @click="handleClick(transaction)"
+            >
               <div class="card-left">
                 <div class="transaction-title">
                   <span class="reason">{{ transaction.reason || '(无摘要)' }}</span>
@@ -26,28 +38,36 @@
                     <span
                       v-if="
                         transaction.upsetedClassify &&
-                        transaction.upsetedClassify !== transaction.classify
+                          transaction.upsetedClassify !== transaction.classify
                       "
                       style="color: var(--van-warning-color)"
                     >
                       → {{ transaction.upsetedClassify }}
                     </span>
                   </div>
-                  <div v-if="transaction.importFrom">来源: {{ transaction.importFrom }}</div>
+                  <div v-if="transaction.importFrom">
+                    来源: {{ transaction.importFrom }}
+                  </div>
                 </div>
               </div>
               <div class="card-middle">
-                <van-tag :type="getTypeTagType(transaction.type)" size="medium">
+                <van-tag
+                  :type="getTypeTagType(transaction.type)"
+                  size="medium"
+                >
                   {{ getTypeName(transaction.type) }}
                 </van-tag>
                 <template
                   v-if="
                     Number.isFinite(transaction.upsetedType) &&
-                    transaction.upsetedType !== transaction.type
+                      transaction.upsetedType !== transaction.type
                   "
                 >
                   →
-                  <van-tag :type="getTypeTagType(transaction.upsetedType)" size="medium">
+                  <van-tag
+                    :type="getTypeTagType(transaction.upsetedType)"
+                    size="medium"
+                  >
                     {{ getTypeName(transaction.upsetedType) }}
                   </van-tag>
                 </template>
@@ -57,21 +77,25 @@
                   <div :class="['amount', getAmountClass(transaction.type)]">
                     {{ formatAmount(transaction.amount, transaction.type) }}
                   </div>
-                  <div v-if="transaction.balance && transaction.balance > 0" class="balance">
-                    余额: {{ formatMoney(transaction.balance) }}
-                  </div>
                   <div
-                    v-if="transaction.refundAmount && transaction.refundAmount > 0"
+                    v-if="transaction.balance && transaction.balance > 0"
                     class="balance"
                   >
-                    退款: {{ formatMoney(transaction.refundAmount) }}
+                    余额: {{ formatMoney(transaction.balance) }}
                   </div>
                 </div>
-                <van-icon name="arrow" size="16" color="var(--van-gray-5)" />
+                <van-icon
+                  name="arrow"
+                  size="16"
+                  color="var(--van-gray-5)"
+                />
               </div>
             </div>
           </div>
-          <template v-if="showDelete" #right>
+          <template
+            v-if="showDelete"
+            #right
+          >
             <van-button
               square
               type="danger"
diff --git a/Web/src/registerServiceWorker.js b/Web/src/registerServiceWorker.js
index 0cfa2df..68f77dd 100644
--- a/Web/src/registerServiceWorker.js
+++ b/Web/src/registerServiceWorker.js
@@ -3,13 +3,13 @@
 export const needRefresh = ref(false)
 let swRegistration = null
 
-export async function updateServiceWorker() {
+export async function updateServiceWorker () {
   if (swRegistration && swRegistration.waiting) {
     await swRegistration.waiting.postMessage({ type: 'SKIP_WAITING' })
   }
 }
 
-export function register() {
+export function register () {
   if ('serviceWorker' in navigator) {
     window.addEventListener('load', () => {
       const swUrl = '/service-worker.js'
@@ -66,7 +66,7 @@ export function register() {
   }
 }
 
-export function unregister() {
+export function unregister () {
   if ('serviceWorker' in navigator) {
     navigator.serviceWorker.ready
       .then((registration) => {
@@ -79,7 +79,7 @@ export function unregister() {
 }
 
 // 请求通知权限
-export function requestNotificationPermission() {
+export function requestNotificationPermission () {
   if ('Notification' in window && 'serviceWorker' in navigator) {
     Notification.requestPermission().then((permission) => {
       if (permission === 'granted') {
@@ -90,7 +90,7 @@ export function requestNotificationPermission() {
 }
 
 // 后台同步
-export function registerBackgroundSync(tag = 'sync-data') {
+export function registerBackgroundSync (tag = 'sync-data') {
   if ('serviceWorker' in navigator && 'SyncManager' in window) {
     navigator.serviceWorker.ready
       .then((registration) => {
diff --git a/Web/src/stores/counter.js b/Web/src/stores/counter.js
index b6757ba..27d4ccf 100644
--- a/Web/src/stores/counter.js
+++ b/Web/src/stores/counter.js
@@ -4,7 +4,7 @@ import { defineStore } from 'pinia'
 export const useCounterStore = defineStore('counter', () => {
   const count = ref(0)
   const doubleCount = computed(() => count.value * 2)
-  function increment() {
+  function increment () {
     count.value++
   }
 
diff --git a/Web/src/views/BalanceView.vue b/Web/src/views/BalanceView.vue
index dbc5ff9..dbd6574 100644
--- a/Web/src/views/BalanceView.vue
+++ b/Web/src/views/BalanceView.vue
@@ -1,7 +1,10 @@
 <template>
   <div class="page-container-flex">
     <!-- 顶部导航栏 -->
-    <van-nav-bar title="账单" placeholder>
+    <van-nav-bar
+      title="账单"
+      placeholder
+    >
       <template #right>
         <van-button
           v-if="tabActive === 'email'"
@@ -20,15 +23,38 @@
         />
       </template>
     </van-nav-bar>
-    <van-tabs v-model:active="tabActive" type="card" style="margin: 12px 0 2px 0">
-      <van-tab title="账单" name="balance" />
-      <van-tab title="邮件" name="email" />
-      <van-tab title="消息" name="message" />
+    <van-tabs
+      v-model:active="tabActive"
+      type="card"
+      style="margin: 12px 0 2px 0"
+    >
+      <van-tab
+        title="账单"
+        name="balance"
+      />
+      <van-tab
+        title="邮件"
+        name="email"
+      />
+      <van-tab
+        title="消息"
+        name="message"
+      />
     </van-tabs>
 
-    <TransactionsRecord v-if="tabActive === 'balance'" ref="transactionsRecordRef" />
-    <EmailRecord v-else-if="tabActive === 'email'" ref="emailRecordRef" />
-    <MessageView v-else-if="tabActive === 'message'" ref="messageViewRef" :is-component="true" />
+    <TransactionsRecord
+      v-if="tabActive === 'balance'"
+      ref="transactionsRecordRef"
+    />
+    <EmailRecord
+      v-else-if="tabActive === 'email'"
+      ref="emailRecordRef"
+    />
+    <MessageView
+      v-else-if="tabActive === 'message'"
+      ref="messageViewRef"
+      :is-component="true"
+    />
   </div>
 </template>
 
diff --git a/Web/src/views/ClassificationBatch.vue b/Web/src/views/ClassificationBatch.vue
index 1179230..43e946b 100644
--- a/Web/src/views/ClassificationBatch.vue
+++ b/Web/src/views/ClassificationBatch.vue
@@ -15,7 +15,10 @@
       </div>
 
       <!-- 分组列表 -->
-      <van-empty v-if="!hasData && finished" description="暂无数据" />
+      <van-empty
+        v-if="!hasData && finished"
+        description="暂无数据"
+      />
 
       <van-list
         v-model:loading="listLoading"
diff --git a/Web/src/views/ClassificationEdit.vue b/Web/src/views/ClassificationEdit.vue
index f2f65ff..e21aad5 100644
--- a/Web/src/views/ClassificationEdit.vue
+++ b/Web/src/views/ClassificationEdit.vue
@@ -10,7 +10,10 @@
 
     <div class="scroll-content">
       <!-- 第一层：选择交易类型 -->
-      <div v-if="currentLevel === 0" class="level-container">
+      <div
+        v-if="currentLevel === 0"
+        class="level-container"
+      >
         <van-cell-group inset>
           <van-cell
             v-for="type in typeOptions"
@@ -23,22 +26,48 @@
       </div>
 
       <!-- 第二层：分类列表 -->
-      <div v-else class="level-container">
+      <div
+        v-else
+        class="level-container"
+      >
         <!-- 面包屑导航 -->
         <div class="breadcrumb">
-          <van-tag type="primary" closeable style="margin-left: 16px" @close="handleBackToRoot">
+          <van-tag
+            type="primary"
+            closeable
+            style="margin-left: 16px"
+            @close="handleBackToRoot"
+          >
             {{ currentTypeName }}
           </van-tag>
         </div>
 
         <!-- 分类列表 -->
-        <van-empty v-if="categories.length === 0" description="暂无分类" />
+        <van-empty
+          v-if="categories.length === 0"
+          description="暂无分类"
+        />
 
-        <van-cell-group v-else inset>
-          <van-swipe-cell v-for="category in categories" :key="category.id">
-            <van-cell :title="category.name" is-link @click="handleEdit(category)" />
+        <van-cell-group
+          v-else
+          inset
+        >
+          <van-swipe-cell
+            v-for="category in categories"
+            :key="category.id"
+          >
+            <van-cell
+              :title="category.name"
+              is-link
+              @click="handleEdit(category)"
+            />
             <template #right>
-              <van-button square type="danger" text="删除" @click="handleDelete(category)" />
+              <van-button
+                square
+                type="danger"
+                text="删除"
+                @click="handleDelete(category)"
+              />
             </template>
           </van-swipe-cell>
         </van-cell-group>
@@ -49,7 +78,12 @@
 
       <div class="bottom-button">
         <!-- 新增分类按钮 -->
-        <van-button type="primary" size="large" icon="plus" @click="handleAddCategory">
+        <van-button
+          type="primary"
+          size="large"
+          icon="plus"
+          @click="handleAddCategory"
+        >
           新增分类
         </van-button>
       </div>
diff --git a/Web/src/views/ClassificationNLP.vue b/Web/src/views/ClassificationNLP.vue
index 0cb97eb..44d6d62 100644
--- a/Web/src/views/ClassificationNLP.vue
+++ b/Web/src/views/ClassificationNLP.vue
@@ -1,6 +1,11 @@
 <template>
   <div class="page-container-flex classification-nlp">
-    <van-nav-bar title="自然语言分类" left-text="返回" left-arrow @click-left="onClickLeft" />
+    <van-nav-bar
+      title="自然语言分类"
+      left-text="返回"
+      left-arrow
+      @click-left="onClickLeft"
+    />
 
     <div class="scroll-content">
       <!-- 输入区域 -->
@@ -18,18 +23,36 @@
         </van-cell-group>
 
         <div class="action-buttons">
-          <van-button type="primary" block round :loading="analyzing" @click="handleAnalyze">
+          <van-button
+            type="primary"
+            block
+            round
+            :loading="analyzing"
+            @click="handleAnalyze"
+          >
             分析查询
           </van-button>
         </div>
       </div>
 
       <!-- 分析结果展示 -->
-      <div v-if="analysisResult" class="result-section">
+      <div
+        v-if="analysisResult"
+        class="result-section"
+      >
         <van-cell-group inset>
-          <van-cell title="查询关键词" :value="analysisResult.searchKeyword" />
-          <van-cell title="AI建议类型" :value="getTypeName(analysisResult.targetType)" />
-          <van-cell title="AI建议分类" :value="analysisResult.targetClassify" />
+          <van-cell
+            title="查询关键词"
+            :value="analysisResult.searchKeyword"
+          />
+          <van-cell
+            title="AI建议类型"
+            :value="getTypeName(analysisResult.targetType)"
+          />
+          <van-cell
+            title="AI建议分类"
+            :value="analysisResult.targetClassify"
+          />
           <van-cell
             title="找到记录"
             :value="`${analysisResult.records.length} 条`"
@@ -48,12 +71,30 @@
     />
 
     <!-- 记录列表弹窗 -->
-    <PopupContainer v-model="showRecordsList" title="交易记录列表" height="75%">
+    <PopupContainer
+      v-model="showRecordsList"
+      title="交易记录列表"
+      height="75%"
+    >
       <div style="background: var(--van-background)">
         <!-- 批量操作按钮 -->
         <div class="batch-actions">
-          <van-button plain type="primary" size="small" @click="selectAll"> 全选 </van-button>
-          <van-button plain type="default" size="small" @click="selectNone"> 全不选 </van-button>
+          <van-button
+            plain
+            type="primary"
+            size="small"
+            @click="selectAll"
+          >
+            全选
+          </van-button>
+          <van-button
+            plain
+            type="default"
+            size="small"
+            @click="selectNone"
+          >
+            全不选
+          </van-button>
           <van-button
             type="success"
             size="small"
diff --git a/Web/src/views/ClassificationSmart.vue b/Web/src/views/ClassificationSmart.vue
index cbb45cd..3e89e06 100644
--- a/Web/src/views/ClassificationSmart.vue
+++ b/Web/src/views/ClassificationSmart.vue
@@ -1,8 +1,16 @@
 <template>
   <div class="page-container-flex smart-classification">
-    <van-nav-bar title="智能分类" left-text="返回" left-arrow @click-left="onClickLeft" />
+    <van-nav-bar
+      title="智能分类"
+      left-text="返回"
+      left-arrow
+      @click-left="onClickLeft"
+    />
 
-    <div class="scroll-content" style="padding-top: 5px">
+    <div
+      class="scroll-content"
+      style="padding-top: 5px"
+    >
       <!-- 统计信息 -->
       <div class="stats-info">
         <span class="stats-label">未分类账单 </span>
diff --git a/Web/src/views/LoginView.vue b/Web/src/views/LoginView.vue
index fd51a38..b81fe29 100644
--- a/Web/src/views/LoginView.vue
+++ b/Web/src/views/LoginView.vue
@@ -1,7 +1,9 @@
 <template>
   <div class="page-container login-container">
     <div class="login-box">
-      <h1 class="login-title">账单</h1>
+      <h1 class="login-title">
+        账单
+      </h1>
       <div class="login-form">
         <van-field
           v-model="password"
diff --git a/Web/src/views/TransactionsRecord.vue b/Web/src/views/TransactionsRecord.vue
index ab1055f..e61042f 100644
--- a/Web/src/views/TransactionsRecord.vue
+++ b/Web/src/views/TransactionsRecord.vue
@@ -12,7 +12,10 @@
     </div>
 
     <!-- 下拉刷新区域 -->
-    <van-pull-refresh v-model="refreshing" @refresh="onRefresh">
+    <van-pull-refresh
+      v-model="refreshing"
+      @refresh="onRefresh"
+    >
       <!-- 加载提示 -->
       <van-loading
         v-if="loading && !(transactionList && transactionList.length)"
diff --git a/WebApi.Test/Basic/DatabaseTest.cs b/WebApi.Test/Basic/DatabaseTest.cs
new file mode 100644
index 0000000..7ae9d69
--- /dev/null
+++ b/WebApi.Test/Basic/DatabaseTest.cs
@@ -0,0 +1,58 @@
+using FreeSql;
+using Repository;
+
+namespace WebApi.Test.Basic;
+
+public class DatabaseTest : BaseTest, IDisposable
+{
+    protected IFreeSql FreeSql { get; }
+    protected ITransactionRecordRepository Repository { get; }
+
+    public DatabaseTest()
+    {
+        FreeSql = new FreeSqlBuilder()
+            .UseConnectionString(DataType.Sqlite, "Data Source=:memory:")
+            .UseAutoSyncStructure(true)
+            .UseNoneCommandParameter(true)
+            .Build();
+
+        Repository = new TransactionRecordRepository(FreeSql);
+    }
+
+    public void Dispose()
+    {
+        FreeSql.Dispose();
+    }
+
+    protected TransactionRecord CreateTestRecord(
+        decimal amount,
+        TransactionType type = TransactionType.Expense,
+        DateTime? occurredAt = null,
+        string reason = "测试摘要",
+        string classify = "测试分类")
+    {
+        return new TransactionRecord
+        {
+            Amount = amount,
+            Type = type,
+            OccurredAt = occurredAt ?? DateTime.Now,
+            Reason = reason,
+            Classify = classify,
+            Card = "1234",
+            Balance = 1000,
+            EmailMessageId = 1,
+            ImportNo = Guid.NewGuid().ToString(),
+            ImportFrom = "测试"
+        };
+    }
+
+    protected TransactionRecord CreateExpense(decimal amount, DateTime? occurredAt = null, string reason = "支出", string classify = "餐饮")
+    {
+        return CreateTestRecord(-amount, TransactionType.Expense, occurredAt, reason, classify);
+    }
+
+    protected TransactionRecord CreateIncome(decimal amount, DateTime? occurredAt = null, string reason = "收入", string classify = "工资")
+    {
+        return CreateTestRecord(amount, TransactionType.Income, occurredAt, reason, classify);
+    }
+}
\ No newline at end of file
diff --git a/WebApi/Controllers/TransactionRecordController.cs b/WebApi/Controllers/TransactionRecordController.cs
index 0e23ac1..5d49c3d 100644
--- a/WebApi/Controllers/TransactionRecordController.cs
+++ b/WebApi/Controllers/TransactionRecordController.cs
@@ -689,52 +689,7 @@ public class TransactionRecordController(
         }
     }
 
-    /// <summary>
-    /// 获取抵账候选列表
-    /// </summary>
-    [HttpGet("{id}")]
-    public async Task<BaseResponse<TransactionRecord[]>> GetCandidatesForOffset(long id)
-    {
-        try
-        {
-            var current = await transactionRepository.GetByIdAsync(id);
-            if (current == null)
-            {
-                return ((TransactionRecord[])[]).Ok();
-            }
-
-            var list = await transactionRepository.GetCandidatesForOffsetAsync(id, current.Amount, current.Type);
-
-            return list.ToArray().Ok();
-        }
-        catch (Exception ex)
-        {
-            logger.LogError(ex, "获取抵账候选列表失败，交易ID: {TransactionId}", id);
-            return $"获取抵账候选列表失败: {ex.Message}".Fail<TransactionRecord[]>();
-        }
-    }
-
-    /// <summary>
-    /// 抵账（删除两笔交易）
-    /// </summary>
-    [HttpPost]
-    public async Task<IActionResult> OffsetTransactions([FromBody] OffsetTransactionDto dto)
-    {
-        var t1 = await transactionRepository.GetByIdAsync(dto.Id1);
-        var t2 = await transactionRepository.GetByIdAsync(dto.Id2);
-
-        if (t1 == null || t2 == null)
-        {
-            return NotFound("交易记录不存在");
-        }
-
-        await transactionRepository.DeleteAsync(dto.Id1);
-        await transactionRepository.DeleteAsync(dto.Id2);
-
-        return Ok(new { success = true, message = "抵账成功" });
-    }
-
-    private async Task WriteEventAsync(string eventType, string data)
+private async Task WriteEventAsync(string eventType, string data)
     {
         var message = $"event: {eventType}\ndata: {data}\n\n";
         await Response.WriteAsync(message);
@@ -821,15 +776,7 @@ public record BatchUpdateByReasonDto(
 /// </summary>
 public record BillAnalysisRequest(
     string UserInput
-);
-
-/// <summary>
-/// 抵账请求DTO
-/// </summary>
-public record OffsetTransactionDto(
-    long Id1,
-    long Id2
-);
+ );
 
 public record ParseOneLineRequestDto(
     string Text