refactor(JsonTools): 规范化页面组件目录结构

- 将子组件移至 components/ 子目录（JsonDiffInput、DiffResult、JsonFormatSection、JsonConvertSection、DiffNavigator、JsonTree）
- 将 diffEngine.ts 工具函数移至 src/utils/
- 提取 ConvertFunction/ConvertResult 类型到 types.ts，解决循环依赖
- 创建 __tests__/ 目录结构
- 更新所有相关导入路径

Co-authored-by: Cursor <cursoragent@cursor.com>

src/pages/JsonTools/__tests__/index.test.tsx

@@ -0,0 +1,11 @@
+import { render, screen } from '@testing-library/react';
+import { describe, it, expect } from 'vitest';
+import Index from '../index';
+
+describe('JsonTools 页面', () => {
+  it('应该渲染页面标题', () => {
+    render(<Index />);
+    // 基本渲染测试
+    expect(screen.getByRole('button')).toBeInTheDocument();
+  });
+});

src/pages/JsonTools/components/DiffResult.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 import JsonTree from './JsonTree';
-import type { DiffNode, DiffResult as DiffResultType, DiffType, ViewMode } from './types';
+import type { DiffNode, DiffResult as DiffResultType, DiffType, ViewMode } from '../types';
 
 export interface DiffResultProps extends React.HTMLAttributes<HTMLDivElement> {
   result: DiffResultType;

src/pages/JsonTools/components/JsonConvertSection.tsx

@@ -5,14 +5,7 @@ import { CopyButton } from '@/components/CopyButton';
 import TextInputArea from '@/components/TextInputArea';
 import { validateJson } from '@/utils/jsonFormatter';
 import { cn } from '@/lib/utils';
-
-export interface ConvertResult {
-  output: string;
-  originalBytes: number;
-  outputBytes: number;
-}
-
-export type ConvertFunction = (text: string) => ConvertResult;
+import type { ConvertFunction, ConvertResult } from '../types';
 
 interface JsonConvertSectionProps extends React.HTMLAttributes<HTMLDivElement> {
   translationPrefix: string;

src/pages/JsonTools/components/JsonTree.tsx

@@ -1,6 +1,6 @@
 import React, { useEffect, useMemo, useRef, useState } from 'react';
 import { ChevronDown, ChevronRight } from 'lucide-react'; // 用正统的矢量箭头平替原生的字符 '▾' '▸'
-import type { DiffNode, DiffType } from './types';
+import type { DiffNode, DiffType } from '../types';
 import { cn } from '@/lib/utils';
 
 export type TreeSide = 'left' | 'right';

src/pages/JsonTools/index.tsx

@@ -1,9 +1,9 @@
 import { useI18n } from '@/utils/chromeI18n';
-import JsonDiffInput from './JsonDiffInput';
-import DiffResult from './DiffResult';
-import DiffNavigator from './DiffNavigator';
-import JsonFormatSection from './JsonFormatSection';
-import JsonConvertSection from './JsonConvertSection';
+import JsonDiffInput from './components/JsonDiffInput';
+import DiffResult from './components/DiffResult';
+import DiffNavigator from './components/DiffNavigator';
+import JsonFormatSection from './components/JsonFormatSection';
+import JsonConvertSection from './components/JsonConvertSection';
 import SwitchButtonGroup from '@/components/SwitchButtonGroup';
 import { useJsonTools } from './useJsonTools';
 import type { JsonToolsPageMode } from '@/types/storage';

src/pages/JsonTools/types.ts

@@ -53,3 +53,13 @@ export interface DiffResult {
   /** 差异核心总计数（等价于 diffPaths.length），注入 tabular-nums 配合渲染 */
   diffCount: number;
 }
+
+/** JSON 转换结果 */
+export interface ConvertResult {
+  output: string;
+  originalBytes: number;
+  outputBytes: number;
+}
+
+/** JSON 转换函数类型 */
+export type ConvertFunction = (text: string) => ConvertResult;

src/pages/JsonTools/useJsonTools.ts

@@ -1,14 +1,13 @@
 import { useCallback, useEffect, useMemo, useState } from 'react';
 import { useI18n } from '@/utils/chromeI18n';
 import { useStorageState } from '@/utils/useStorageState';
-import { diffJson } from './diffEngine';
+import { diffJson } from '@/utils/diffEngine';
 import { jsonToYaml } from '@/utils/jsonToYaml';
 import { jsonToToml } from '@/utils/jsonToToml';
 import { minifyJson } from '@/utils/jsonFormatter';
 import { isValidPageMode, tryParse } from './constants';
 import type { JsonToolsPageMode } from '@/types/storage';
-import type { ConvertFunction } from './JsonConvertSection';
-import type { ViewMode } from './types';
+import type { ConvertFunction, ViewMode } from './types';
 
 export interface UseJsonToolsReturn {
   pageMode: JsonToolsPageMode;

src/utils/__tests__/diffEngine.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { diffJson } from '../../pages/JsonTools/diffEngine';
+import { diffJson } from '../diffEngine';
 
 describe('diffJson', () => {
   it('should detect added property', () => {

src/utils/diffEngine.ts

@@ -1,4 +1,4 @@
-import type { DiffNode, DiffResult, DiffType } from './types';
+import type { DiffNode, DiffResult, DiffType } from '@/pages/JsonTools/types';
 
 const ROOT_PATH = '$';
 const SENTINEL = Symbol('missing');