feat: 重写为 Tauri + React + TypeScript (v4.0)

完全移除旧 C+IUP 代码，改用 Tauri 2.x + React 19 + TypeScript + Rust 技术栈重写。
功能与 v3.1 完全等价：

- React 前端：Tailwind CSS 4、Zustand 状态管理、i18next 国际化
- Rust 后端：winreg 注册表读写、Win32 API FFI 调用
- 核心逻辑：StringList、UndoRedoManager、PathManager、Import/Export
- 深色模式、中英文切换、键盘快捷键、合并预览
- 66 个 Vitest 单元测试

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/unit/undo-redo.test.ts

@@ -0,0 +1,223 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import {
+  UndoRedoManager,
+  OperationType,
+  TargetType,
+  type OpRecord,
+} from '../../src/core/undo-redo';
+import { StringList } from '../../src/core/string-list';
+
+function makeRecord(
+  type: OperationType,
+  target: TargetType,
+  index: number,
+  count: number,
+  oldPaths: string[],
+  newPaths: string[],
+): OpRecord {
+  return { type, target, index, count, oldPaths, newPaths };
+}
+
+describe('UndoRedoManager', () => {
+  let mgr: UndoRedoManager;
+  let sysPaths: StringList;
+  let userPaths: StringList;
+
+  beforeEach(() => {
+    mgr = new UndoRedoManager(50);
+    sysPaths = StringList.fromArray(['C:\\Windows', 'C:\\Program Files']);
+    userPaths = StringList.fromArray(['C:\\Users\\me\\AppData']);
+  });
+
+  // ── 基本状态 ──
+
+  it('初始不可撤销不可重做', () => {
+    expect(mgr.canUndo()).toBe(false);
+    expect(mgr.canRedo()).toBe(false);
+  });
+
+  // ── ADD ──
+
+  it('ADD 撤销/重做', () => {
+    sysPaths.add('C:\\NewPath');
+
+    mgr.push(
+      makeRecord(OperationType.ADD, TargetType.SYSTEM, 2, 1, [], ['C:\\NewPath']),
+    );
+
+    expect(mgr.canUndo()).toBe(true);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Windows', 'C:\\Program Files']);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Windows', 'C:\\Program Files', 'C:\\NewPath']);
+  });
+
+  // ── DELETE ──
+
+  it('DELETE 撤销/重做', () => {
+    const removed = sysPaths.get(0)!;
+    mgr.push(
+      makeRecord(OperationType.DELETE, TargetType.SYSTEM, 0, 1, [removed], []),
+    );
+
+    sysPaths.removeAt(0);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.get(0)).toBe(removed);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Program Files']);
+  });
+
+  // ── EDIT ──
+
+  it('EDIT 撤销/重做', () => {
+    const oldVal = sysPaths.get(0)!;
+    mgr.push(
+      makeRecord(OperationType.EDIT, TargetType.SYSTEM, 0, 1, [oldVal], ['C:\\Edited']),
+    );
+
+    sysPaths.set(0, 'C:\\Edited');
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.get(0)).toBe(oldVal);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.get(0)).toBe('C:\\Edited');
+  });
+
+  // ── MOVE_UP ──
+
+  it('MOVE_UP 撤销/重做', () => {
+    mgr.push(
+      makeRecord(OperationType.MOVE_UP, TargetType.SYSTEM, 1, 1, [], []),
+    );
+
+    sysPaths.swap(0, 1);
+
+    expect(sysPaths.toArray()).toEqual(['C:\\Program Files', 'C:\\Windows']);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Windows', 'C:\\Program Files']);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Program Files', 'C:\\Windows']);
+  });
+
+  // ── MOVE_DOWN ──
+
+  it('MOVE_DOWN 撤销/重做', () => {
+    mgr.push(
+      makeRecord(OperationType.MOVE_DOWN, TargetType.SYSTEM, 0, 1, [], []),
+    );
+
+    sysPaths.swap(0, 1);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Windows', 'C:\\Program Files']);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(['C:\\Program Files', 'C:\\Windows']);
+  });
+
+  // ── CLEAN ──
+
+  it('CLEAN 撤销/重做', () => {
+    const oldPaths = sysPaths.toArray();
+    const newPaths = ['C:\\Windows']; // 假设 Program Files 被清理掉了
+
+    mgr.push(
+      makeRecord(OperationType.CLEAN, TargetType.SYSTEM, 0, 2, oldPaths, newPaths),
+    );
+
+    sysPaths.clear();
+    for (const p of newPaths) sysPaths.add(p);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(oldPaths);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(newPaths);
+  });
+
+  // ── CLEAR ──
+
+  it('CLEAR 撤销/重做', () => {
+    const oldPaths = sysPaths.toArray();
+
+    mgr.push(
+      makeRecord(OperationType.CLEAR, TargetType.SYSTEM, 0, 2, oldPaths, []),
+    );
+
+    sysPaths.clear();
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(oldPaths);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.length).toBe(0);
+  });
+
+  // ── IMPORT ──
+
+  it('IMPORT 撤销/重做', () => {
+    const oldPaths = sysPaths.toArray();
+    const imported = ['C:\\New1', 'C:\\New2'];
+
+    mgr.push(
+      makeRecord(OperationType.IMPORT, TargetType.SYSTEM, 0, 2, oldPaths, imported),
+    );
+
+    sysPaths.clear();
+    for (const p of imported) sysPaths.add(p);
+
+    mgr.undo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(oldPaths);
+
+    mgr.redo(sysPaths, userPaths);
+    expect(sysPaths.toArray()).toEqual(imported);
+  });
+
+  // ── 重做分支截断 ──
+
+  it('新操作后截断重做分支', () => {
+    mgr.push(
+      makeRecord(OperationType.ADD, TargetType.SYSTEM, 0, 1, [], ['first']),
+    );
+    mgr.undo(sysPaths, userPaths);
+    expect(mgr.canRedo()).toBe(true);
+
+    // 推入新操作，重做分支被截断
+    mgr.push(
+      makeRecord(OperationType.ADD, TargetType.SYSTEM, 0, 1, [], ['second']),
+    );
+    expect(mgr.canRedo()).toBe(false);
+  });
+
+  // ── 历史限制 ──
+
+  it('超出最大历史容量时移除最旧记录', () => {
+    const small = new UndoRedoManager(3);
+    for (let i = 0; i < 5; i++) {
+      small.push(
+        makeRecord(OperationType.ADD, TargetType.SYSTEM, 0, 1, [], [`path_${i}`]),
+      );
+    }
+    expect(small.historyLength).toBe(3);
+  });
+
+  // ── USER 目标 ──
+
+  it('操作 USER 路径', () => {
+    userPaths.add('C:\\NewUserPath');
+    mgr.push(
+      makeRecord(OperationType.ADD, TargetType.USER, 1, 1, [], ['C:\\NewUserPath']),
+    );
+
+    mgr.undo(sysPaths, userPaths);
+    expect(userPaths.toArray()).toEqual(['C:\\Users\\me\\AppData']);
+    expect(sysPaths.toArray()).toEqual(['C:\\Windows', 'C:\\Program Files']);
+  });
+});