feat: v0.2.2 — plugin refactor, i18n, outline tracking, formatTable, code title, fr locale

## Added
- French (fr) locale with 60+ translations
- Outline panel scroll tracking with active heading highlight
- exec('formatTable') for auto-aligning Markdown table columns
- Code block title rendering via ```js title=hello.js```
- Escaped pipe \| support in table cells
- Custom block token fallback rendering as <div>
- Gutter incremental DOM update (no more full innerHTML)
- 694 tests (+10)

## Changed
- All 6 preset plugins refactored to closure-based state (no this pollution)
- shortcutHelp plugin now i18n-aware (shortcut labels follow locale)
- Context menu labels (Cut/Copy/Paste/Select All) i18n-translated
- Warm theme now has progressBg + closeHoverBg fields

tests/plugins.test.ts

@@ -820,17 +820,13 @@ describe('零散分支补全', () => {
     document.body.appendChild(c);
     const ed = new MarkdownEditor(c, { value: 'hello world' });
     ed.use(presetPlugins.searchReplace);
-    const plugin = ed.getPlugins().find((p) => p.name === 'searchReplace');
     // Ctrl+F 打开面板
     ed.textarea.dispatchEvent(new KeyboardEvent('keydown', { key: 'f', ctrlKey: true, bubbles: true }));
     expect(ed.el.querySelector('.me-search')).not.toBeNull();
-    expect(plugin._panel).toBeDefined();
-    // spy _close 验证 textarea 上 Ctrl+Escape 分支被触发
-    // 注：plugins.js 中 escape 分支在 if (!mod) return 之后，必须带 Ctrl/Meta
-    const closeSpy = jest.spyOn(plugin, '_close');
+    expect((ed as any).__srState._panel).toBeDefined();
+    // Ctrl+Escape 关闭面板（带 Ctrl 才会进入分支）
     ed.textarea.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape', ctrlKey: true, bubbles: true }));
-    expect(closeSpy).toHaveBeenCalled();
-    closeSpy.mockRestore();
+    expect(ed.el.querySelector('.me-search')).toBeNull();
     ed.destroy();
   });