feat: 快捷键录入重绑（FR-K3，keymap:load/save IPC+config.json，SettingsPanel 录入 UI+冲突检测，use-hotkeys 读 store 实时生效，重开恢复）

apps/desktop/src/renderer/App.tsx

@@ -14,6 +14,7 @@ import { AppearancePanel } from './features/appearance/AppearancePanel';
 import { useAppearance } from './features/appearance/appearance-store';
 import { CheatSheet } from './features/keymap/CheatSheet';
 import { useGlobalHotkeys } from './features/keymap/use-hotkeys';
+import { useKeymap } from './features/keymap/keymap-service';
 import { useLayout } from './features/shell/layout-store';
 import { Resizer } from './features/shell/Resizer';
 import { EffectLayer } from './features/effects/EffectLayer';
@@ -35,7 +36,7 @@ export function App() {
   const settings = useSettings();
   const layout = useLayout();
 
-  useEffect(() => { loadVault(); loadTree(); restore(); appearance.load(); }, []);
+  useEffect(() => { loadVault(); loadTree(); restore(); appearance.load(); useKeymap.getState().load(); }, []);
   useEffect(() => { if (activeId && tabs.length > 0) { const t = tabs.find(x => x.id === activeId); if (t) openDoc(t.path).catch(() => {}); } }, []);
   useGlobalHotkeys({ onNewDoc: () => {}, onSave: () => useStore.getState().saveNow(), onFocusSearch: () => { const el = document.querySelector('input[placeholder*="搜索"]') as HTMLInputElement; el?.focus(); }, onToggleOutline: () => layout.toggleOutline(), onCheat: () => setShowCheat(true), onSettings: () => setShowSettings(true) });