feat: 完成 TraceMemo v2.2.0 品牌升级并保留旧数据兼容

- 将用户可见品牌升级为 TraceMemo（迹忆）
- 增加最早期 userData/sessionData 兼容路径选择
- 保留 WechatExplorer runtime identity 以兼容 safeStorage
- 继续使用旧 Knowledge、Settings、API Token 和 Provider 配置
- 新日志写入 TraceMemo 目录并保留历史日志
- 保留旧 API、Skill、环境变量和导出目录兼容标识
- 更新相关文档、界面文案与自动化测试

tests/e2e/app.spec.ts

@@ -9,7 +9,7 @@ test('APP-01 first launch renders a usable connection screen without uncaught er
   const pageErrors: Error[] = []
   fixture.page.on('pageerror', (error) => pageErrors.push(error))
   try {
-    await expect(fixture.page.getByRole('heading', { name: 'WechatExplorer' })).toBeVisible()
+    await expect(fixture.page.getByRole('heading', { name: 'TraceMemo（迹忆）' })).toBeVisible()
     await expect(fixture.page.getByRole('main')).not.toBeEmpty()
     expect(pageErrors).toEqual([])
   } finally {

tests/e2e/support/electron-main.cjs

@@ -117,7 +117,7 @@ handle('key:getEnvironment', () => ({
   wechatVersion: '4.1.9.57',
   dataStructureVersion: settings.dbRoot === 'fixture-account' ? '微信 4.x（WCDB）' : '未检测到',
   dataDirectoryDetected: settings.dbRoot === 'fixture-account',
-  diagnosticSummary: 'WechatExplorer: v2.1.6\n数据目录: 已检测到',
+  diagnosticSummary: 'TraceMemo: v2.1.6\n数据目录: 已检测到',
   autoDetectSupported: true,
   wechatRunning: true,
   accountIdentified: connected,
@@ -371,7 +371,7 @@ handle('image:testConfig', () => ({
   fileFound: true,
   decrypted: true,
   readable: true,
-  diagnosticLog: 'WechatExplorer 图片解析测试日志（已脱敏）\n测试结果：成功（SUCCESS）'
+  diagnosticLog: 'TraceMemo 图片解析测试日志（已脱敏）\n测试结果：成功（SUCCESS）'
 }))
 handle('image:clearConfig', () => ({ success: true }))
 handle('image:getDecoderStatus', () => ({

tests/e2e/visual.spec.ts

@@ -14,7 +14,7 @@ test('NAV-01 login page visual @visual', async () => {
   const fixture = await launchTestApp({ mode: 'disconnected' })
   try {
     await fixture.page.setViewportSize(visualViewport)
-    await expect(fixture.page.getByRole('heading', { name: 'WechatExplorer' })).toBeVisible()
+    await expect(fixture.page.getByRole('heading', { name: 'TraceMemo（迹忆）' })).toBeVisible()
     await expect(fixture.page).toHaveScreenshot('login-page.png', {
       animations: 'disabled',
       caret: 'hide'