feat(M8): FR-T4/T5/T6/W2/W6/W7 标签页/布局接线——固定标签悬停浮现关闭按钮(T4); tab-store updateScroll+restore恢复滚动位置(T5); tabbarVisible接线App+TitleBar切换按钮(T6/W6); winIsMaximized IPC+最大化/还原图标切换(W2); 极简模式隐藏TabBar(W7); layout-tabs E2E 3 项

apps/desktop/src/renderer/App.tsx

@@ -37,7 +37,10 @@ export function App() {
   const layout = useLayout();
 
   useEffect(() => { loadVault(); loadTree(); restore(); appearance.load(); useKeymap.getState().load(); useSettings.getState().loadGpu(); }, []);
-  useEffect(() => { if (activeId && tabs.length > 0) { const t = tabs.find(x => x.id === activeId); if (t) openDoc(t.path).catch(() => {}); } }, []);
+  useEffect(() => { if (activeId && tabs.length > 0) { const t = tabs.find(x => x.id === activeId); if (t) openDoc(t.path).then(() => {
+    // FR-T5：恢复标签页保存的滚动位置
+    if (t.scrollTop > 0) { setTimeout(() => { const ed = document.querySelector('.ProseMirror'); const c = ed?.closest('[class*="editor"]') as HTMLElement | null; if (c) c.scrollTop = t.scrollTop; }, 100); }
+  }).catch(() => {}); } }, [activeId]);
   // FR-S4：关窗前冲刷未保存内容
   useEffect(() => {
     const onBeforeUnload = () => { try { useStore.getState().saveNow(); } catch {} };
@@ -52,9 +55,9 @@ export function App() {
     <div style={{ position: 'relative', display: 'flex', flexDirection: 'column', height: '100vh', background: 'var(--bg-primary, #1a1a1a)', color: '#ddd' }}>
       {appearance.bgImage && <div style={{ position: 'absolute', inset: 0, backgroundImage: 'url(' + appearance.bgImage + ')', backgroundSize: 'cover', backgroundPosition: 'center', filter: settings.perfMode ? 'none' : 'blur(var(--blur-px,0px))', opacity: 0.45, zIndex: 0, pointerEvents: 'none' }} />}
       <div style={{ position: 'relative', zIndex: 1, display: 'flex', flexDirection: 'column', height: '100vh' }}>
-      <TitleBar view={view} onToggleView={() => setView(v => v === 'editor' ? 'graph' : 'editor')} onSettings={() => setShowSettings(true)} onAppearance={() => setShowAppearance(true)} onToggleSidebar={() => layout.toggleSidebar()} onToggleMinimal={() => layout.toggleMinimal()} minimal={layout.minimal} />
+      <TitleBar view={view} onToggleView={() => setView(v => v === 'editor' ? 'graph' : 'editor')} onSettings={() => setShowSettings(true)} onAppearance={() => setShowAppearance(true)} onToggleSidebar={() => layout.toggleSidebar()} onToggleMinimal={() => layout.toggleMinimal()} onToggleTabbar={() => layout.toggleTabbar()} minimal={layout.minimal} tabbarVisible={layout.tabbarVisible} />
       <Toolbar />
-      {view === 'editor' && <TabBar />}
+      {view === 'editor' && layout.tabbarVisible && !layout.minimal && <TabBar />}
       <div style={{ flex: 1, display: 'flex', overflow: 'hidden' }}>
         {layout.minimal ? (<Editor />) : (<>
           {layout.sidebarVisible && (<>