feat(M10/M3/M2): FR-M4/M6/X1/X2/B6/D1/D3 元数据/导出/弹层/迁移——EditorToolbar 加星标按钮(M4); DocMeta 加 createdAt+frontmatter 读写+DocInfoPanel 显示+创建时写入(M6); copyMd 失败 catch+错误提示(X1); @media print 干净排版+hljs配色(X2); SettingsPanel/CheatSheet Esc 关闭(B6); migration-service 旧版板块转换+init+switch 检测(D1/D3); meta-export E2E 3 项

apps/desktop/src/renderer/features/keymap/CheatSheet.tsx

@@ -1,3 +1,4 @@
+import { useEffect } from 'react';
 import { useKeymap, formatCombo, type Scope } from './keymap-service';
 
 const SCOPE_LABELS: Record<Scope, string> = { global: '全局', app: '应用级', editor: '编辑器' };
@@ -5,6 +6,12 @@ const SCOPE_ORDER: Scope[] = ['global', 'app', 'editor'];
 
 export function CheatSheet({ onClose }: { onClose: () => void }) {
   const bindings = useKeymap(s => s.bindings);
+  // FR-B6：Esc 关闭速查面板
+  useEffect(() => {
+    const onEsc = (e: KeyboardEvent) => { if (e.key === 'Escape') { e.preventDefault(); onClose(); } };
+    window.addEventListener('keydown', onEsc, true);
+    return () => window.removeEventListener('keydown', onEsc, true);
+  }, [onClose]);
   return (
     <div onClick={e => { if (e.target === e.currentTarget) onClose(); }} style={{ position: 'fixed', inset: 0, background: 'rgba(0,0,0,0.5)', display: 'flex', alignItems: 'center', justifyContent: 'center', zIndex: 1500 }}>
       <div style={{ width: 480, maxHeight: '80vh', overflow: 'auto', background: 'var(--bg-secondary)', border: '1px solid var(--control-border)', borderRadius: 10, padding: 20, boxShadow: '0 8px 32px rgba(0,0,0,0.5)' }}>