diff --git a/CHANGELOG.md b/CHANGELOG.md
index f907680..6a5e84d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,37 @@
 # 更新日志
 
 > 每次发版前修改此文件，`npm run build:win` 打包后会自动读取生成 update-info.json。
+---
+## 0.0.27（2026-06-24）
+
+**无限画布 UI 重构 + 预览键盘控制 + 拖拽体验优化**
+
+### 无限画布
+
+- **双栏布局重构**：AntD Layout（Sider + Content），左侧导航 + 右侧画布，页面级别渲染预览组件解耦 DOM
+- **CanvasSidebar**：项目/集数选择器 + 镜头搜索 + 镜头列表（滚动条 + 底部固定刷新按钮）+ 工作区切换
+- **CategoryTabs 双模式**：Assets 阶段 → 全部/角色/道具/场景/收藏；其他阶段 → 所有[阶段名]/收藏/待审核/通过/返修/已弃用
+- **分类数量徽标**：每个标签显示数据计数，"收藏"标签额外显示媒体类型细分（视频/图片/音频）
+- **Ctrl/Cmd + 拖拽平移**：替代 Space 键修饰，释放 Space 给媒体控制；`pointerEvents: none` 防止拖拽时误抓缩略图
+- **画布锁**：预览打开时 `previewActiveRef` 双守卫阻止穿透缩放/拖拽
+- **无限画布入口按钮**：StageTabs 右侧按钮，调用 `OPEN_CANVAS_WINDOW` IPC
+
+### 预览键盘控制
+
+- **Space 暂停/播放**：capture 阶段拦截 + `stopPropagation`，避免与原生 `<video controls>` 双重触发
+- **← → 快退/快进**：capture 阶段直接设置 `currentTime`，步长 ±0.5 秒
+- **↑ ↓ 音量**：透传给原生 controls 处理
+
+### 主进程
+
+- **local-media:// Range 头转发**：协议 handler 只提取并转发 `Range` 请求头到 `net.fetch`，确保音视频 seek 返回正确的 206 Partial Content
+
+### UI 调整
+
+- 全局字号上调（侧栏、工具栏、标签、状态栏等）
+- CanvasSidebar 滚动条定制 + 主题色适配
+- ProjectSelector / EpisodeSelector 宽度自适应
+
 ---
 ## 0.0.26（2026-06-23）
 
diff --git a/TODO.md b/TODO.md
index d799b03..5f2f3b9 100644
--- a/TODO.md
+++ b/TODO.md
@@ -10,6 +10,9 @@
 - **窗口标题动态版控**：登录后通过 IPC 追加 `·个人版`/`·企业版` 后缀
 - **退出登录不再自动清空本地缓存**：`user_id` 隔离 + 手动清理按钮
 - **无限画布（企业版项目管理）**：独立 BrowserWindow 画布窗口，项目/集数/镜头导航、阶段切换、网格/单行布局、滚轮缩放、拖拽平移、全屏灯箱预览、原生文件拖拽
+- **无限画布 UI 重构**：AntD Layout 双栏布局（Sider+Content）、CanvasSidebar 导航、CategoryTabs 双模式分类、Ctrl/Cmd+拖拽平移
+- **预览键盘控制**：Space 暂停/播放、← → 快退快进 ±0.5s、↑ ↓ 音量透传原生 controls
+- **local-media:// Range 请求支持**：协议头转发修复音视频 seek 失败问题
 
 ---
 
diff --git a/electron/main.ts b/electron/main.ts
index 007fe53..256119f 100644
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -252,12 +252,21 @@ app.whenReady().then(() => {
         }
 
         const fwd = filePath.replace(/\\/g, '/');
+        let fileUrl: string;
         if (fwd.startsWith('//')) {
-            // UNC：file://server/share/path（authority = server）
-            return net.fetch('file:' + fwd);
+            fileUrl = 'file:' + fwd;
+        } else {
+            fileUrl = 'file:///' + fwd;
         }
-        // 本地：file:///C:/path/to/file（authority 为空）
-        return net.fetch('file:///' + fwd);
+
+        // 只转发 Range 头，确保音视频 seek 时返回 206 Partial Content。
+        // ⚠️ 不能转发所有 headers（Origin/Referer/Sec-Fetch-* 等），
+        // 否则会干扰 Chromium 内部的 file:// 协议处理，导致请求失败。
+        const rangeHeader = request.headers.get('Range');
+        if (rangeHeader) {
+            return net.fetch(fileUrl, { headers: { Range: rangeHeader } });
+        }
+        return net.fetch(fileUrl);
     });
 
     setupAppMenu();
diff --git a/src/pages/infinite-canvas/CanvasPage.tsx b/src/pages/infinite-canvas/CanvasPage.tsx
index b7deab0..fa6eed1 100644
--- a/src/pages/infinite-canvas/CanvasPage.tsx
+++ b/src/pages/infinite-canvas/CanvasPage.tsx
@@ -1,19 +1,28 @@
 // ============================================================
-// CanvasPage — 无限画布页面
+// CanvasPage — 无限画布页面（AntD Layout 双栏布局）
 //
-// 两栏 flex 布局（Assets 阶段为单栏）：
-//   左侧：ShotList（镜头单选列表）
-//   右侧：CanvasViewport（主画布）
-//   顶部：CanvasToolbar
-//   底部：状态栏
+//   ┌──────────────┬─────────────────────────────────────────┐
+//   │  CanvasSidebar│  CanvasToolbar                         │
+//   │  ├ 项目选择    │  ├ StageTabs + 无限画布                 │
+//   │  ├ 集数选择    │  ├ CategoryTabs + FilterBar            │
+//   │  ├ 镜头搜索    │  ├────────────────────────────────────┤
+//   │  ├ 镜头列表    │  │ CanvasViewport（或 Placeholder）     │
+//   │  └ 刷新按钮    │  │                                     │
+//   └──────────────┴─────────────────────────────────────────┘
+//                        └── 底部状态栏 ─────────────────────────┘
 // ============================================================
 
+import { useState, useCallback } from 'react';
+import { Layout } from 'antd';
 import { useTheme } from '@/components/providers/ThemeProvider';
 import { useCanvasStore } from './store/useCanvasStore';
 import { useDirectoryScan } from './hooks/useDirectoryScan';
 import { CanvasToolbar } from './toolbar/CanvasToolbar';
 import { CanvasViewport } from './core/CanvasViewport';
-import { ShotList } from './navigation/ShotList';
+import { MediaPreview } from './core/MediaPreview';
+import { CanvasSidebar } from './navigation/CanvasSidebar';
+
+const { Sider, Content } = Layout;
 
 /** 中心区域占位提示 */
 function Placeholder({
@@ -41,7 +50,7 @@ function Placeholder({
             <div style={{ fontSize: 14, color: isDark ? '#A5A3C0' : '#6B7280' }}>{title}</div>
             <div
                 style={{
-                    fontSize: 12,
+                    fontSize: 13,
                     marginTop: 8,
                     color: isDark ? '#6E6B90' : '#9CA3AF',
                 }}
@@ -65,6 +74,17 @@ export function CanvasPage() {
     // 启动目录扫描监听
     useDirectoryScan();
 
+    // ── 全屏预览状态 ──
+    const [previewItemId, setPreviewItemId] = useState<number | null>(null);
+
+    const handlePreviewOpen = useCallback((itemId: number) => {
+        setPreviewItemId(itemId);
+    }, []);
+
+    const handlePreviewClose = useCallback(() => {
+        setPreviewItemId(null);
+    }, []);
+
     const isAssets = currentStage === 'Assets';
 
     /** 根据当前选中状态决定主视图内容 */
@@ -74,7 +94,7 @@ export function CanvasPage() {
                 <Placeholder
                     icon="📂"
                     title="请先选择一个工作区目录"
-                    hint="目录结构需符合 AIGC 生产管线约定（项目/shots/集数/镜头/阶段）"
+                    hint="从左侧边栏打开或切换工作区"
                     isDark={isDark}
                 />
             );
@@ -85,7 +105,7 @@ export function CanvasPage() {
                 <Placeholder
                     icon="📁"
                     title="请先选择一个项目"
-                    hint="从顶部工具栏的项目下拉列表中选择"
+                    hint="从左侧边栏的项目下拉列表中选择"
                     isDark={isDark}
                 />
             );
@@ -113,7 +133,7 @@ export function CanvasPage() {
                 <Placeholder
                     icon="🎬"
                     title="请先选择集数"
-                    hint="从顶部工具栏的集数下拉列表中选择"
+                    hint="从左侧边栏的集数下拉列表中选择"
                     isDark={isDark}
                 />
             );
@@ -124,7 +144,7 @@ export function CanvasPage() {
                 <Placeholder
                     icon="🎞️"
                     title="请先选择镜头"
-                    hint="从左侧镜头列表中点击选择"
+                    hint="从左侧边栏的镜头列表中点击选择"
                     isDark={isDark}
                 />
             );
@@ -141,85 +161,103 @@ export function CanvasPage() {
             );
         }
 
-        return <CanvasViewport />;
+        return <CanvasViewport onPreviewOpen={handlePreviewOpen} previewActive={previewItemId !== null} />;
     };
 
+    const borderColor = isDark ? '#2E2A5A' : '#E5E7EB';
+
     return (
-        <div
+        <Layout
             style={{
                 width: '100vw',
                 height: '100vh',
-                display: 'flex',
-                flexDirection: 'column',
-                background: isDark ? '#0F0D1E' : '#F5F3FF',
-                color: isDark ? '#E8E6F0' : '#1E1B4B',
                 overflow: 'hidden',
             }}
+            hasSider
         >
-            {/* 顶部工具栏 */}
-            <CanvasToolbar />
-
-            {/* 中心区域：两栏布局 */}
-            <div
+            {/* ── 左侧导航边栏 ── */}
+            <Sider
+                width={220}
                 style={{
-                    flex: 1,
-                    display: 'flex',
+                    background: isDark ? '#0F0D21' : '#F5F3FF',
+                    borderRight: `1px solid ${borderColor}`,
                     overflow: 'hidden',
                 }}
+                trigger={null}
             >
-                {/* 左侧镜头列表（Assets 阶段隐藏） */}
-                <ShotList />
+                <CanvasSidebar />
+            </Sider>
 
-                {/* 右侧主内容 */}
-                <div
+            {/* ── 右侧主内容区 ── */}
+            <Layout
+                style={{
+                    background: isDark ? '#0F0D1E' : '#F5F3FF',
+                }}
+            >
+                <Content
                     style={{
-                        flex: 1,
                         display: 'flex',
+                        flexDirection: 'column',
                         overflow: 'hidden',
                     }}
                 >
-                    {renderMainContent()}
-                </div>
-            </div>
+                    {/* 顶部工具栏（两行：阶段标签 + 分类标签/筛选） */}
+                    <CanvasToolbar />
 
-            {/* 底部状态栏 */}
-            <div
-                style={{
-                    height: 28,
-                    flexShrink: 0,
-                    display: 'flex',
-                    alignItems: 'center',
-                    padding: '0 12px',
-                    borderTop: `1px solid ${isDark ? '#2E2A5A' : '#E5E7EB'}`,
-                    background: isDark ? '#15132E' : '#EEF2FF',
-                    fontSize: 11,
-                    color: isDark ? '#6E6B90' : '#9CA3AF',
-                }}
-            >
-                <span>离线模式 · 本地文件系统</span>
-                <span style={{ margin: '0 8px' }}>|</span>
-                <span>
-                    {isScanning
-                        ? '扫描中…'
-                        : workspaceRoot
-                            ? `项目：${selectedProject || '(未选)'} · 阶段：${currentStage} · ${items.length} 个文件`
-                            : '准备就绪'}
-                </span>
-                {selectedEpisode && (
-                    <>
-                        <span style={{ margin: '0 4px' }}>|</span>
-                        <span>集数：{selectedEpisode}</span>
-                    </>
-                )}
-                {selectedShot && (
-                    <>
-                        <span style={{ margin: '0 4px' }}>|</span>
-                        <span>镜头：{selectedShot}</span>
-                    </>
-                )}
-                <span style={{ flex: 1 }} />
-                <span>Phase 1</span>
-            </div>
-        </div>
+                    {/* 主画布区域 */}
+                    <div
+                        style={{
+                            flex: 1,
+                            display: 'flex',
+                            overflow: 'hidden',
+                        }}
+                    >
+                        {renderMainContent()}
+                    </div>
+
+                    {/* 底部状态栏 */}
+                    <div
+                        style={{
+                            height: 28,
+                            flexShrink: 0,
+                            display: 'flex',
+                            alignItems: 'center',
+                            padding: '0 12px',
+                            borderTop: `1px solid ${borderColor}`,
+                            background: isDark ? '#15132E' : '#EEF2FF',
+                            fontSize: 12,
+                            color: isDark ? '#6E6B90' : '#9CA3AF',
+                        }}
+                    >
+                        <span>离线模式 · 本地文件系统</span>
+                        <span style={{ margin: '0 8px' }}>|</span>
+                        <span>
+                            {isScanning
+                                ? '扫描中…'
+                                : workspaceRoot
+                                    ? `项目：${selectedProject || '(未选)'} · 阶段：${currentStage} · ${items.length} 个文件`
+                                    : '准备就绪'}
+                        </span>
+                        {selectedEpisode && (
+                            <>
+                                <span style={{ margin: '0 4px' }}>|</span>
+                                <span>集数：{selectedEpisode}</span>
+                            </>
+                        )}
+                        {selectedShot && (
+                            <>
+                                <span style={{ margin: '0 4px' }}>|</span>
+                                <span>镜头：{selectedShot}</span>
+                            </>
+                        )}
+                        <span style={{ flex: 1 }} />
+                        <span>Phase 1</span>
+                    </div>
+                </Content>
+            </Layout>
+
+            {/* 全屏预览（页面级别渲染，与画布 DOM 解耦） */}
+            <MediaPreview itemId={previewItemId} onClose={handlePreviewClose} />
+        </Layout>
     );
 }
diff --git a/src/pages/infinite-canvas/core/CanvasViewport.tsx b/src/pages/infinite-canvas/core/CanvasViewport.tsx
index 39f8d7f..c6cbb74 100644
--- a/src/pages/infinite-canvas/core/CanvasViewport.tsx
+++ b/src/pages/infinite-canvas/core/CanvasViewport.tsx
@@ -5,7 +5,7 @@
 //   - Grid 模式：固定列数，均匀网格布局
 //   - Single 模式：按 groupKey 分组，每组一行横向排列
 //   - 滚轮缩放：滚轮直接调整 zoom（无需修饰键），Ctrl/Cmd + 滚轮精细缩放
-//   - 鼠标拖拽：mousedown + mousemove 平移（panOffset）
+//   - Ctrl/Cmd + 鼠标拖拽：按住 Ctrl(Win) 或 Cmd(Mac) 后 mousedown + mousemove 平移
 //   - 分页叠加层：PagerOverlay + ZoomOverlay
 // ============================================================
 
@@ -14,7 +14,6 @@ import { useTheme } from '@/components/providers/ThemeProvider';
 import { useCanvasStore } from '../store/useCanvasStore';
 import { MediaCard } from './MediaCard';
 import { MediaCardContextMenu } from './MediaCardContextMenu';
-import { MediaPreview } from './MediaPreview';
 import { PagerOverlay, ZoomOverlay, ModeSwitch } from './ViewportControls';
 import {
     gridPosition,
@@ -29,7 +28,14 @@ import { ITEM_H, ITEM_SPACING, ROW_LABEL_WIDTH, MAX_ITEMS_PER_PAGE } from '../ut
 const ZOOM_MIN = 0.02;
 const ZOOM_MAX = 16.0;
 
-export function CanvasViewport() {
+interface CanvasViewportProps {
+    /** 双击卡片时回调 */
+    onPreviewOpen: (itemId: number) => void;
+    /** 预览是否打开（阻止画布缩放/拖拽） */
+    previewActive: boolean;
+}
+
+export function CanvasViewport({ onPreviewOpen, previewActive }: CanvasViewportProps) {
     const { isDark } = useTheme();
     const items = useCanvasStore((s) => s.items);
     const layoutMode = useCanvasStore((s) => s.layoutMode);
@@ -40,14 +46,19 @@ export function CanvasViewport() {
     const zoom = useCanvasStore((s) => s.zoom);
     const panOffset = useCanvasStore((s) => s.panOffset);
     const interactionMode = useCanvasStore((s) => s.interactionMode);
+    const favoriteOnly = useCanvasStore((s) => s.favoriteOnly);
     const setZoom = useCanvasStore((s) => s.setZoom);
     const setPanOffset = useCanvasStore((s) => s.setPanOffset);
 
-    // 拖拽状态
+    // 拖拽状态（需按住 Ctrl/Cmd 修饰键）
     const [isDragging, setIsDragging] = useState(false);
     const dragStart = useRef({ x: 0, y: 0, panX: 0, panY: 0 });
     const containerRef = useRef<HTMLDivElement>(null);
 
+    // 拖拽修饰键状态（Ctrl / Cmd）—— 双通道
+    const [isPanModifier, setIsPanModifier] = useState(false);
+    const panModifierRef = useRef(false);
+
     // 预览打开时锁定视口事件（防止穿透缩放/拖拽画布）
     const previewActiveRef = useRef(false);
 
@@ -58,44 +69,41 @@ export function CanvasViewport() {
     useEffect(() => { setZoomRef.current = setZoom; }, [setZoom]);
     const currentZoomRef = useRef(zoom);
     useEffect(() => { currentZoomRef.current = zoom; }, [zoom]);
-
-    // 全屏预览状态
-    const [previewItemId, setPreviewItemId] = useState<number | null>(null);
-
-    const handleDoubleClick = useCallback((itemId: number) => {
-        setPreviewItemId(itemId);
-    }, []);
-
-    const handleClosePreview = useCallback(() => {
-        setPreviewItemId(null);
-    }, []);
-
     // 同步预览状态到 ref（供原生 wheel 监听器读取，避免闭包过期）
     useEffect(() => {
-        previewActiveRef.current = previewItemId !== null;
-    }, [previewItemId]);
+        previewActiveRef.current = previewActive;
+    }, [previewActive]);
+
+
+    // ── 收藏过滤 ──
+    // 客户端过滤：当 favoriteOnly 为 true 时仅展示 metadata.favorite === true 的条目
+
+    const displayItems = useMemo(() => {
+        if (!favoriteOnly) return items;
+        return items.filter((item) => item.metadata?.favorite === true);
+    }, [items, favoriteOnly]);
 
     // ── 分页计算 ──
 
     const pageItems = useMemo(() => {
-        if (items.length === 0) return [];
+        if (displayItems.length === 0) return [];
         if (layoutMode === 'grid') {
             const { startIndex, endIndex } = gridPageInfo(
-                items.length,
+                displayItems.length,
                 cols,
                 rowsPerPage,
                 currentPage,
             );
-            return items.slice(startIndex, endIndex);
+            return displayItems.slice(startIndex, endIndex);
         }
         // single mode
         const { startIndex, endIndex } = singlePageInfo(
-            items,
+            displayItems,
             singleRowsPerPage,
             currentPage,
         );
-        return items.slice(startIndex, endIndex);
-    }, [items, layoutMode, cols, rowsPerPage, singleRowsPerPage, currentPage]);
+        return displayItems.slice(startIndex, endIndex);
+    }, [displayItems, layoutMode, cols, rowsPerPage, singleRowsPerPage, currentPage]);
 
     // ── 位置计算 ──
 
@@ -134,6 +142,44 @@ export function CanvasViewport() {
         };
     }, [layoutMode, pageItems, cols]);
 
+    // ── Ctrl/Cmd + 拖拽平移 ──
+    // 按住 Ctrl（Windows）或 Cmd（Mac）后鼠标左键拖拽平移画布。
+    // 修饰键松开时自动取消拖拽，防止画布粘滞。
+    // 同时支持 Ctrl 和 Cmd 组合（keyup 后检查是否仍有一个修饰键被按住）。
+
+    useEffect(() => {
+        const handleKeyDown = (e: KeyboardEvent) => {
+            if (e.key !== 'Control' && e.key !== 'Meta') return;
+            if (e.repeat) return;
+            e.preventDefault();
+            setIsPanModifier(true);
+            panModifierRef.current = true;
+        };
+        const handleKeyUp = (e: KeyboardEvent) => {
+            if (e.key !== 'Control' && e.key !== 'Meta') return;
+            // 检查是否所有拖拽修饰键均已松开
+            if (!e.ctrlKey && !e.metaKey) {
+                setIsPanModifier(false);
+                panModifierRef.current = false;
+                setIsDragging(false); // 松修饰键时取消拖拽
+            }
+        };
+        // 窗口失焦时重置修饰键状态（防止切出应用导致状态卡住）
+        const handleBlur = () => {
+            setIsPanModifier(false);
+            panModifierRef.current = false;
+            setIsDragging(false);
+        };
+        window.addEventListener('keydown', handleKeyDown);
+        window.addEventListener('keyup', handleKeyUp);
+        window.addEventListener('blur', handleBlur);
+        return () => {
+            window.removeEventListener('keydown', handleKeyDown);
+            window.removeEventListener('keyup', handleKeyUp);
+            window.removeEventListener('blur', handleBlur);
+        };
+    }, []);
+
     // ── 滚轮缩放 ──
     // 纯滚轮 → 快速缩放（10%/tick），Ctrl/Cmd + 滚轮 → 精细缩放（3%/tick）。
     // Mac 触控板捏合手势 → macOS 自动合成 Ctrl+wheel 事件 → 精细缩放。
@@ -180,6 +226,8 @@ export function CanvasViewport() {
             if (e.button !== 0) return;
             const target = e.target as HTMLElement;
             if (target.closest('button')) return;
+            // 必须按住 Ctrl/Cmd 才能拖拽平移画布
+            if (!panModifierRef.current) return;
             setIsDragging(true);
             dragStart.current = {
                 x: e.clientX,
@@ -242,14 +290,20 @@ export function CanvasViewport() {
                 position: 'relative',
                 cursor: isDragging
                     ? 'grabbing'
-                    : interactionMode === 'SELECT'
-                        ? 'default'
-                        : 'grab',
+                    : isPanModifier
+                        ? 'grab'
+                        : 'default',
                 background: isDark ? '#0F0D1E' : '#F9FAFB',
+                // Ctrl/Cmd 拖拽时禁用文本选择，防止误抓媒体元素
+                userSelect: isPanModifier ? 'none' : undefined,
             }}
             onMouseDown={handleMouseDown}
             onMouseMove={handleMouseMove}
             onMouseUp={handleMouseUp}
+            onDragStart={(e) => {
+                // Ctrl/Cmd 拖拽时阻止浏览器原生的图片/链接拖拽行为
+                if (panModifierRef.current) e.preventDefault();
+            }}
         >
             {/* 画布内容 */}
             <div
@@ -261,6 +315,8 @@ export function CanvasViewport() {
                     transformOrigin: '0 0',
                     width: canvasWidth,
                     height: canvasHeight,
+                    // 拖拽修饰键激活时禁用缩略图的鼠标事件，所有事件穿透到容器层
+                    pointerEvents: isPanModifier ? 'none' : undefined,
                 }}
             >
                 {/* Single 模式的行标签 */}
@@ -277,7 +333,7 @@ export function CanvasViewport() {
                                 display: 'flex',
                                 alignItems: 'center',
                                 justifyContent: 'center',
-                                fontSize: 11,
+                                fontSize: 12,
                                 fontWeight: 600,
                                 color: isDark ? '#C4B5FD' : '#6366F1',
                                 background: isDark
@@ -306,7 +362,7 @@ export function CanvasViewport() {
                                 y={0}
                                 zoom={zoom}
                                 mode={interactionMode}
-                                onDoubleClick={handleDoubleClick}
+                                onDoubleClick={onPreviewOpen}
                             />
                         </MediaCardContextMenu>
                     );
@@ -325,7 +381,7 @@ export function CanvasViewport() {
                             background: 'rgba(255, 77, 79, 0.1)',
                             border: '1px solid rgba(255, 77, 79, 0.3)',
                             color: '#FF4D4F',
-                            fontSize: 12,
+                            fontSize: 13,
                             textAlign: 'center',
                         }}
                     >
@@ -357,11 +413,6 @@ export function CanvasViewport() {
             <ZoomOverlay />
             <ModeSwitch />
 
-            {/* 全屏预览（双击打开） */}
-            <MediaPreview
-                itemId={previewItemId}
-                onClose={handleClosePreview}
-            />
         </div>
     );
 }
diff --git a/src/pages/infinite-canvas/core/MediaPreview.tsx b/src/pages/infinite-canvas/core/MediaPreview.tsx
index a1b047a..5639ceb 100644
--- a/src/pages/infinite-canvas/core/MediaPreview.tsx
+++ b/src/pages/infinite-canvas/core/MediaPreview.tsx
@@ -55,6 +55,8 @@ export function MediaPreview({ itemId, onClose }: MediaPreviewProps) {
     const [previewPan, setPreviewPan] = useState({ x: 0, y: 0 });
     const [isPanning, setIsPanning] = useState(false);
     const imgContainerRef = useRef<HTMLDivElement>(null);
+    const videoRef = useRef<HTMLVideoElement>(null);
+    const audioRef = useRef<HTMLAudioElement>(null);
     const panStartRef = useRef({ x: 0, y: 0, panX: 0, panY: 0 });
     // ref 版 zoom（供稳定闭包的 native wheel listener 读取）
     const previewZoomRef = useRef(previewZoom);
@@ -66,13 +68,13 @@ export function MediaPreview({ itemId, onClose }: MediaPreviewProps) {
         setPreviewPan({ x: 0, y: 0 });
     }, [currentId]);
 
-    // 预览内滚轮缩放（native listener + stopPropagation 隔离）
+    // 预览内滚轮缩放（随 currentId 变化重新绑定，解决首次挂载时 ref 为 null 的问题）
     useEffect(() => {
         const el = imgContainerRef.current;
         if (!el) return;
         const handler = (e: WheelEvent) => {
             e.preventDefault();
-            e.stopPropagation(); // 阻止冒泡到 CanvasViewport
+            e.stopPropagation();
             const delta = -e.deltaY * 0.002;
             const cur = previewZoomRef.current;
             const newZoom = Math.max(0.1, Math.min(8.0, cur + delta));
@@ -80,7 +82,7 @@ export function MediaPreview({ itemId, onClose }: MediaPreviewProps) {
         };
         el.addEventListener('wheel', handler, { passive: false });
         return () => el.removeEventListener('wheel', handler);
-    }, []);
+    }, [currentId]);
 
     // ── 拖拽平移（仅在预览内）──
     const handlePreviewMouseDown = useCallback((e: React.MouseEvent) => {
@@ -120,6 +122,57 @@ export function MediaPreview({ itemId, onClose }: MediaPreviewProps) {
         return () => window.removeEventListener('mouseup', handler);
     }, []);
 
+    // ── 键盘媒体控制 ──
+    // 所有按键在 capture 阶段拦截，优先于原生 <video controls>：
+    //   空格     → 暂停/播放（stopPropagation 阻止原生二次触发）
+    //   ← / →   → 快退/快进 0.5 秒（直接设 currentTime）
+    //   ↑ / ↓   → 透传到原生 controls 处理音量
+    useEffect(() => {
+        if (currentId == null) return;
+
+        const handler = (e: KeyboardEvent) => {
+            const target = e.target as HTMLElement;
+            if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') return;
+
+            const video = videoRef.current;
+            const audio = audioRef.current;
+            const media = video || audio;
+            if (!media) return;
+
+            // 空格 → 暂停/播放
+            if (e.key === ' ') {
+                e.preventDefault();
+                e.stopPropagation();
+                if (media.paused) void media.play();
+                else media.pause();
+                return;
+            }
+
+            // ← / → → 快退/快进 0.5 秒
+            if (e.key === 'ArrowLeft' || e.key === 'ArrowRight') {
+                e.preventDefault();
+                e.stopPropagation();
+                const delta = e.key === 'ArrowLeft' ? -0.5 : 0.5;
+                media.currentTime = Math.max(0, media.currentTime + delta);
+                return;
+            }
+
+            // ↑ / ↓ → 不拦截，透传给原生 controls（原生音量 ±10%）
+        };
+        // capture: true → 在原生 video controls 之前拦截
+        window.addEventListener('keydown', handler, true);
+        return () => window.removeEventListener('keydown', handler, true);
+    }, [currentId]);
+
+    // 媒体元素挂载后自动聚焦（确保原生 controls 能接收 ↑/↓ 音量事件）
+    useEffect(() => {
+        const timer = setTimeout(() => {
+            if (videoRef.current) videoRef.current.focus();
+            else if (audioRef.current) audioRef.current.focus();
+        }, 100);
+        return () => clearTimeout(timer);
+    }, [currentId]);
+
     if (currentId == null) return null;
 
     const currentItem = items.find((i) => i.id === currentId);
@@ -221,17 +274,19 @@ export function MediaPreview({ itemId, onClose }: MediaPreviewProps) {
                 )}
                 {isVideo && (
                     <video
+                        ref={videoRef}
                         src={mediaUrl}
                         controls
                         autoPlay
-                        style={{ maxWidth: '90vw', maxHeight: '85vh', borderRadius: 4 }}
+                        tabIndex={0}
+                        style={{ maxWidth: '90vw', maxHeight: '85vh', borderRadius: 4, outline: 'none' }}
                     />
                 )}
                 {isAudio && (
                     <div style={{ textAlign: 'center', color: '#fff' }}>
                         <div style={{ fontSize: 48, marginBottom: 16 }}>🎵</div>
                         <div style={{ fontSize: 16, marginBottom: 12 }}>{currentItem.fileName}</div>
-                        <audio src={mediaUrl} controls autoPlay />
+                        <audio ref={audioRef} src={mediaUrl} controls autoPlay />
                     </div>
                 )}
             </div>
diff --git a/src/pages/infinite-canvas/core/ViewportControls.tsx b/src/pages/infinite-canvas/core/ViewportControls.tsx
index bde3ffe..69e19ed 100644
--- a/src/pages/infinite-canvas/core/ViewportControls.tsx
+++ b/src/pages/infinite-canvas/core/ViewportControls.tsx
@@ -73,7 +73,7 @@ export function PagerOverlay() {
             />
             <span
                 style={{
-                    fontSize: 12,
+                    fontSize: 13,
                     fontWeight: 500,
                     color: isDark ? '#E8E6F0' : '#1E1B4B',
                     minWidth: 80,
@@ -91,7 +91,7 @@ export function PagerOverlay() {
             />
             <span
                 style={{
-                    fontSize: 10,
+                    fontSize: 11,
                     color: isDark ? '#6E6B90' : '#9CA3AF',
                     borderLeft: `1px solid ${isDark ? '#3E3A6A' : '#E5E7EB'}`,
                     paddingLeft: 8,
@@ -138,7 +138,7 @@ export function ZoomOverlay() {
             />
             <span
                 style={{
-                    fontSize: 12,
+                    fontSize: 13,
                     fontWeight: 600,
                     color: isDark ? '#E8E6F0' : '#1E1B4B',
                     minWidth: 44,
@@ -205,11 +205,11 @@ export function ModeSwitch() {
                     onClick={() => switchMode(key)}
                     title={`${label}模式 (${shortcut})`}
                     style={{
-                        fontSize: 11,
+                        fontSize: 12,
                         fontWeight: interactionMode === key ? 600 : 400,
                     }}
                 >
-                    <span style={{ marginLeft: 2, fontSize: 10 }}>{shortcut}</span>
+                    <span style={{ marginLeft: 2, fontSize: 11 }}>{shortcut}</span>
                 </Button>
             ))}
         </div>
diff --git a/src/pages/infinite-canvas/navigation/CanvasSidebar.tsx b/src/pages/infinite-canvas/navigation/CanvasSidebar.tsx
new file mode 100644
index 0000000..8b8b174
--- /dev/null
+++ b/src/pages/infinite-canvas/navigation/CanvasSidebar.tsx
@@ -0,0 +1,340 @@
+// ============================================================
+// CanvasSidebar — 左侧导航边栏
+//
+// 从上到下依次为：
+//   1. 项目下拉选择器（ProjectSelector）
+//   2. 集数下拉选择器（EpisodeSelector，Assets 阶段隐藏）
+//   3. 镜头号搜索输入框
+//   4. 镜头单选列表（ShotList，上下滚动）
+//   5. 刷新镜头列表按钮
+// ============================================================
+
+import { useState, useCallback } from 'react';
+import { Input, Button, App } from 'antd';
+import { SearchOutlined, ReloadOutlined, FolderOpenOutlined } from '@ant-design/icons';
+import { useTheme } from '@/components/providers/ThemeProvider';
+import { useCanvasStore } from '../store/useCanvasStore';
+import { ProjectSelector } from './ProjectSelector';
+import { EpisodeSelector } from './EpisodeSelector';
+
+export function CanvasSidebar() {
+    const { isDark } = useTheme();
+    const { message } = App.useApp();
+
+    // ── Store 订阅 ──
+    const workspaceRoot = useCanvasStore((s) => s.workspaceRoot);
+    const selectedProject = useCanvasStore((s) => s.selectedProject);
+    const selectedEpisode = useCanvasStore((s) => s.selectedEpisode);
+    const selectedShot = useCanvasStore((s) => s.selectedShot);
+    const shots = useCanvasStore((s) => s.shots);
+    const currentStage = useCanvasStore((s) => s.currentStage);
+    const selectShot = useCanvasStore((s) => s.selectShot);
+    const setShots = useCanvasStore((s) => s.setShots);
+    const setWorkspace = useCanvasStore((s) => s.setWorkspace);
+    const setProjects = useCanvasStore((s) => s.setProjects);
+    const getDataSource = useCanvasStore((s) => s.getDataSource);
+
+    // ── 本地状态 ──
+    const [shotSearchQuery, setShotSearchQuery] = useState('');
+    const [isRefreshing, setIsRefreshing] = useState(false);
+
+    const isAssets = currentStage === 'Assets';
+
+    // ── 镜头搜索过滤 ──
+    const filteredShots = shotSearchQuery.trim()
+        ? shots.filter((s) => s.toLowerCase().includes(shotSearchQuery.toLowerCase()))
+        : shots;
+
+    // ── 选择镜头 ──
+    const handleShotClick = useCallback(
+        (shotName: string) => {
+            selectShot(shotName);
+        },
+        [selectShot],
+    );
+
+    // ── 刷新镜头列表 ──
+    const handleRefreshShots = useCallback(async () => {
+        if (!workspaceRoot || !selectedProject || !selectedEpisode) return;
+        try {
+            setIsRefreshing(true);
+            const dataSource = getDataSource();
+            const shotsPath = `${workspaceRoot}\\${selectedProject}\\shots\\${selectedEpisode}`;
+            const updated = await dataSource.listSubdirs(shotsPath);
+            setShots(updated);
+            message.success(`镜头列表已刷新（${updated.length} 个镜头）`);
+        } catch (err) {
+            message.error(`刷新失败: ${(err as Error).message}`);
+        } finally {
+            setIsRefreshing(false);
+        }
+    }, [workspaceRoot, selectedProject, selectedEpisode, getDataSource, setShots, message]);
+
+    // ── 打开/切换工作区 ──
+    const handleOpenWorkspace = async () => {
+        try {
+            const dataSource = getDataSource();
+            const dir = await dataSource.openDirectoryDialog();
+            if (dir) {
+                setWorkspace(dir);
+                try {
+                    const projects = await dataSource.listSubdirs(dir);
+                    setProjects(projects);
+                } catch (err) {
+                    console.error('[CanvasSidebar] 加载项目列表失败:', err);
+                }
+            }
+        } catch (err) {
+            message.error((err as Error).message || '打开目录失败');
+        }
+    };
+
+    // ── 样式变量 ──
+    const bg = isDark ? '#0F0D21' : '#F5F3FF';
+    const borderColor = isDark ? '#2D2A4A' : '#E5E0F0';
+    const sectionBg = isDark ? '#15132B' : '#EBE8F5';
+    const textColor = isDark ? '#C8C4E0' : '#4A4570';
+    const dimColor = isDark ? '#6E6B90' : '#9CA3AF';
+    const activeBg = isDark ? '#2D2A5A' : '#E8E4FF';
+    const activeColor = isDark ? '#C4B5FD' : '#6D28D9';
+    const hoverBg = isDark ? '#1E1B3B' : '#EDEAFA';
+
+    return (
+        <div
+            style={{
+                height: '100%',
+                background: bg,
+                borderRight: `1px solid ${borderColor}`,
+                display: 'flex',
+                flexDirection: 'column',
+                overflow: 'hidden',
+            }}
+        >
+            {/* ── 工作区选择 ── */}
+            <div
+                style={{
+                    padding: '6px 8px',
+                    borderBottom: `1px solid ${borderColor}`,
+                    flexShrink: 0,
+                }}
+            >
+                <Button
+                    type="dashed"
+                    size="small"
+                    block
+                    icon={<FolderOpenOutlined />}
+                    onClick={() => void handleOpenWorkspace()}
+                    style={{
+                        fontSize: 13,
+                        color: isDark ? '#C4B5FD' : '#4338CA',
+                        borderColor: isDark ? '#3E3A6A' : '#C7D2FE',
+                    }}
+                >
+                    {workspaceRoot ? '切换工作区' : '打开工作区'}
+                </Button>
+                {workspaceRoot && (
+                    <div
+                        style={{
+                            marginTop: 4,
+                            fontSize: 11,
+                            color: dimColor,
+                            textAlign: 'center',
+                            overflow: 'hidden',
+                            textOverflow: 'ellipsis',
+                            whiteSpace: 'nowrap',
+                        }}
+                        title={workspaceRoot}
+                    >
+                        {workspaceRoot}
+                    </div>
+                )}
+            </div>
+
+            {/* ── 导航选择器 ── */}
+            {workspaceRoot && (
+                <div
+                    style={{
+                        padding: '8px 8px 4px',
+                        display: 'flex',
+                        flexDirection: 'column',
+                        gap: 6,
+                        flexShrink: 0,
+                    }}
+                >
+                    <div style={{ fontSize: 11, fontWeight: 600, color: dimColor, marginBottom: -2 }}>
+                        项目
+                    </div>
+                    <ProjectSelector />
+
+                    {!isAssets && (
+                        <>
+                            <div style={{ fontSize: 11, fontWeight: 600, color: dimColor, marginBottom: -2, marginTop: 4 }}>
+                                集数
+                            </div>
+                            <EpisodeSelector />
+                        </>
+                    )}
+                </div>
+            )}
+
+            {/* ── 镜头搜索 ── */}
+            {workspaceRoot && selectedEpisode && !isAssets && (
+                <div
+                    style={{
+                        padding: '8px 8px 4px',
+                        flexShrink: 0,
+                    }}
+                >
+                    <Input
+                        prefix={<SearchOutlined style={{ fontSize: 13, color: dimColor }} />}
+                        placeholder="搜索镜头号…"
+                        value={shotSearchQuery}
+                        onChange={(e) => setShotSearchQuery(e.target.value)}
+                        allowClear
+                        size="small"
+                        style={{
+                            background: sectionBg,
+                            borderColor: isDark ? '#3E3A6A' : '#D1D5DB',
+                            color: textColor,
+                            borderRadius: 4,
+                            fontSize: 13,
+                        }}
+                    />
+                </div>
+            )}
+
+            {/* ── 镜头列表 ── */}
+            {/* minHeight: 0 是 flexbox 关键修复：防止列表内容撑开容器、导致底部按钮被推出视口 */}
+            <div
+                style={{
+                    flex: 1,
+                    overflowY: 'auto',
+                    overflowX: 'hidden',
+                    minHeight: 0,
+                    padding: '2px 0',
+                    // 自定义滚动条样式
+                    scrollbarWidth: 'thin' as const,
+                    scrollbarColor: isDark
+                        ? '#3E3A6A transparent'
+                        : '#C7D2FE transparent',
+                }}
+            >
+                {isAssets ? (
+                    <div
+                        style={{
+                            padding: '24px 12px',
+                            fontSize: 13,
+                            color: dimColor,
+                            textAlign: 'center',
+                        }}
+                    >
+                        资产阶段无需选择镜头
+                    </div>
+                ) : !selectedEpisode ? (
+                    <div
+                        style={{
+                            padding: '24px 12px',
+                            fontSize: 13,
+                            color: dimColor,
+                            textAlign: 'center',
+                        }}
+                    >
+                        请先选择集数
+                    </div>
+                ) : filteredShots.length === 0 ? (
+                    <div
+                        style={{
+                            padding: '16px 12px',
+                            fontSize: 13,
+                            color: dimColor,
+                            textAlign: 'center',
+                        }}
+                    >
+                        {shotSearchQuery.trim() ? '无匹配镜头' : '该集数下无镜头'}
+                    </div>
+                ) : (
+                    <>
+                        {/* 镜头计数 */}
+                        <div
+                            style={{
+                                padding: '4px 12px',
+                                fontSize: 11,
+                                fontWeight: 600,
+                                color: dimColor,
+                            }}
+                        >
+                            镜头列表
+                            <span style={{ fontWeight: 400, marginLeft: 4 }}>
+                                ({filteredShots.length}{shotSearchQuery.trim() ? ` / ${shots.length}` : ''})
+                            </span>
+                        </div>
+                        {filteredShots.map((shot) => {
+                            const active = shot === selectedShot;
+                            return (
+                                <div
+                                    key={shot}
+                                    onClick={() => handleShotClick(shot)}
+                                    style={{
+                                        padding: '5px 12px',
+                                        cursor: 'pointer',
+                                        fontSize: 13,
+                                        color: active ? activeColor : textColor,
+                                        background: active ? activeBg : 'transparent',
+                                        transition: 'background 0.15s',
+                                        userSelect: 'none',
+                                        borderLeft: active
+                                            ? `3px solid ${activeColor}`
+                                            : '3px solid transparent',
+                                    }}
+                                    onMouseEnter={(e) => {
+                                        if (!active)
+                                            (e.currentTarget as HTMLElement).style.background = hoverBg;
+                                    }}
+                                    onMouseLeave={(e) => {
+                                        if (!active)
+                                            (e.currentTarget as HTMLElement).style.background =
+                                                'transparent';
+                                    }}
+                                >
+                                    {shot}
+                                </div>
+                            );
+                        })}
+                    </>
+                )}
+            </div>
+
+            {/* ── 刷新按钮（固定在底部） ── */}
+            {workspaceRoot && selectedEpisode && !isAssets && (
+                <div
+                    style={{
+                        padding: '8px',
+                        borderTop: `1px solid ${borderColor}`,
+                        flexShrink: 0,
+                        background: isDark ? '#0F0D1E' : '#EDE9F6',
+                    }}
+                >
+                    <Button
+                        size="small"
+                        block
+                        icon={<ReloadOutlined spin={isRefreshing} />}
+                        onClick={() => void handleRefreshShots()}
+                        loading={isRefreshing}
+                        style={{
+                            fontSize: 13,
+                            fontWeight: 500,
+                            borderRadius: 4,
+                            border: `1px solid ${isDark ? '#3E3A6A' : '#C7D2FE'}`,
+                            background: isDark
+                                ? 'rgba(62, 58, 106, 0.4)'
+                                : 'rgba(199, 210, 254, 0.3)',
+                            color: isDark ? '#C4B5FD' : '#4338CA',
+                        }}
+                    >
+                        刷新镜头列表
+                    </Button>
+                </div>
+            )}
+        </div>
+    );
+}
diff --git a/src/pages/infinite-canvas/navigation/EpisodeSelector.tsx b/src/pages/infinite-canvas/navigation/EpisodeSelector.tsx
index d2773dd..5ac6b21 100644
--- a/src/pages/infinite-canvas/navigation/EpisodeSelector.tsx
+++ b/src/pages/infinite-canvas/navigation/EpisodeSelector.tsx
@@ -83,7 +83,7 @@ export function EpisodeSelector() {
                     onChange={handleSelect}
                     placeholder="选择集数"
                     size="small"
-                    style={{ width: 120 }}
+                    style={{ width: '100%' }}
                     options={options}
                     disabled={!selectedProject}
                     showSearch
diff --git a/src/pages/infinite-canvas/navigation/ProjectSelector.tsx b/src/pages/infinite-canvas/navigation/ProjectSelector.tsx
index 1141606..7c7a61c 100644
--- a/src/pages/infinite-canvas/navigation/ProjectSelector.tsx
+++ b/src/pages/infinite-canvas/navigation/ProjectSelector.tsx
@@ -76,7 +76,7 @@ export function ProjectSelector() {
                     onChange={handleSelect}
                     placeholder="选择项目"
                     size="small"
-                    style={{ width: 140 }}
+                    style={{ width: '100%' }}
                     options={options}
                     disabled={!workspaceRoot}
                     showSearch
diff --git a/src/pages/infinite-canvas/navigation/index.ts b/src/pages/infinite-canvas/navigation/index.ts
index 68e693e..8c323a3 100644
--- a/src/pages/infinite-canvas/navigation/index.ts
+++ b/src/pages/infinite-canvas/navigation/index.ts
@@ -5,6 +5,7 @@
 export { ProjectSelector } from './ProjectSelector';
 export { EpisodeSelector } from './EpisodeSelector';
 export { ShotList } from './ShotList';
+export { CanvasSidebar } from './CanvasSidebar';
 export { ContextMenu } from './ContextMenu';
 export type { ContextMenuItem } from './ContextMenu';
 export { DirectoryCreateModal } from './DirectoryCreateModal';
diff --git a/src/pages/infinite-canvas/store/useCanvasStore.ts b/src/pages/infinite-canvas/store/useCanvasStore.ts
index 4e2bea3..f3dc7be 100644
--- a/src/pages/infinite-canvas/store/useCanvasStore.ts
+++ b/src/pages/infinite-canvas/store/useCanvasStore.ts
@@ -76,6 +76,8 @@ export interface CanvasState {
     tagQuery: string;
     auditFilter: AuditStatus | 'all';
     assetTypeFilter: AssetTypeFilter;
+    /** 仅显示收藏条目（metadata.favorite === true） */
+    favoriteOnly: boolean;
 
     // ── Layout ──
     layoutMode: LayoutMode;
@@ -114,7 +116,7 @@ export interface CanvasState {
         filters: Partial<
             Pick<
                 CanvasState,
-                'keywordQuery' | 'tagQuery' | 'auditFilter' | 'assetTypeFilter'
+                'keywordQuery' | 'tagQuery' | 'auditFilter' | 'assetTypeFilter' | 'favoriteOnly'
             >
         >,
     ) => void;
@@ -159,6 +161,7 @@ function createCanvasStoreLogic(dataSource: ICanvasDataSource, initialWorkspace:
         tagQuery: '',
         auditFilter: 'all',
         assetTypeFilter: '全部',
+        favoriteOnly: false,
 
         layoutMode: 'grid',
         cols: 9,
diff --git a/src/pages/infinite-canvas/toolbar/CanvasFilterBar.tsx b/src/pages/infinite-canvas/toolbar/CanvasFilterBar.tsx
index dfb703d..5cde13e 100644
--- a/src/pages/infinite-canvas/toolbar/CanvasFilterBar.tsx
+++ b/src/pages/infinite-canvas/toolbar/CanvasFilterBar.tsx
@@ -1,41 +1,22 @@
 // ============================================================
-// CanvasFilterBar — 画布筛选栏
+// CanvasFilterBar — 关键词搜索栏（精简版）
 //
-// 提供：关键词搜索、标签筛选、审核状态筛选、镜头查询、资产类型筛选
-// 每个筛选条件变化后触发 useDirectoryScan（防抖 300ms）
+// 仅保留文件名/描述关键词搜索。
+// 资产类型筛选 → 已移至 CategoryTabs（Assets 阶段）。
+// 审核状态筛选 → 已移至 CategoryTabs（非 Assets 阶段）。
 // ============================================================
 
 import { useCallback } from 'react';
-import { Input, Select } from 'antd';
+import { Input } from 'antd';
 import { SearchOutlined } from '@ant-design/icons';
 import { useTheme } from '@/components/providers/ThemeProvider';
-import { useCanvasStore, type AuditStatus, type AssetTypeFilter } from '../store/useCanvasStore';
-
-const AUDIT_OPTIONS: Array<{ value: AuditStatus | 'all'; label: string }> = [
-    { value: 'all', label: '全部审核' },
-    { value: 'pending', label: '待审核' },
-    { value: 'approved', label: '已通过' },
-    { value: 'rework', label: '需返工' },
-    { value: 'deprecated', label: '已废弃' },
-];
-
-const ASSET_TYPE_OPTIONS: Array<{ value: AssetTypeFilter; label: string }> = [
-    { value: '全部', label: '全部资产' },
-    { value: '角色', label: '角色' },
-    { value: '道具', label: '道具' },
-    { value: '场景', label: '场景' },
-];
+import { useCanvasStore } from '../store/useCanvasStore';
 
 export function CanvasFilterBar() {
     const { isDark } = useTheme();
     const keywordQuery = useCanvasStore((s) => s.keywordQuery);
-    const auditFilter = useCanvasStore((s) => s.auditFilter);
-    const assetTypeFilter = useCanvasStore((s) => s.assetTypeFilter);
-    const currentStage = useCanvasStore((s) => s.currentStage);
     const setFilters = useCanvasStore((s) => s.setFilters);
 
-    const isAssets = currentStage === 'Assets';
-
     const handleKeywordChange = useCallback(
         (e: React.ChangeEvent<HTMLInputElement>) => {
             setFilters({ keywordQuery: e.target.value });
@@ -51,39 +32,14 @@ export function CanvasFilterBar() {
     };
 
     return (
-        <div style={{ display: 'flex', gap: 8, alignItems: 'center', flex: 1 }}>
-            {/* 关键词搜索 */}
-            <Input
-                placeholder="搜索文件名/描述…"
-                prefix={<SearchOutlined />}
-                value={keywordQuery}
-                onChange={handleKeywordChange}
-                allowClear
-                size="small"
-                style={{ width: 180, ...inputStyle }}
-            />
-
-            {/* 审核状态筛选（仅可审核阶段） */}
-            {!isAssets && (
-                <Select
-                    value={auditFilter}
-                    onChange={(v) => setFilters({ auditFilter: v })}
-                    size="small"
-                    style={{ width: 110 }}
-                    options={AUDIT_OPTIONS}
-                />
-            )}
-
-            {/* 资产类型筛选（仅 Assets 阶段） */}
-            {isAssets && (
-                <Select
-                    value={assetTypeFilter}
-                    onChange={(v) => setFilters({ assetTypeFilter: v })}
-                    size="small"
-                    style={{ width: 110 }}
-                    options={ASSET_TYPE_OPTIONS}
-                />
-            )}
-        </div>
+        <Input
+            placeholder="搜索文件名/描述…"
+            prefix={<SearchOutlined />}
+            value={keywordQuery}
+            onChange={handleKeywordChange}
+            allowClear
+            size="small"
+            style={{ width: 180, ...inputStyle }}
+        />
     );
 }
diff --git a/src/pages/infinite-canvas/toolbar/CanvasToolbar.tsx b/src/pages/infinite-canvas/toolbar/CanvasToolbar.tsx
index a330c1e..70a8554 100644
--- a/src/pages/infinite-canvas/toolbar/CanvasToolbar.tsx
+++ b/src/pages/infinite-canvas/toolbar/CanvasToolbar.tsx
@@ -1,46 +1,25 @@
 // ============================================================
-// CanvasToolbar — 顶部工具栏包装器
+// CanvasToolbar — 画布内容区顶部工具栏（简化版）
 //
-// 包含：工作区选择 + 项目选择 + 集数选择 + StageTabs + FilterBar
+// 包含两行：
+//   第一行：StageTabs（阶段标签 + 无限画布按钮）
+//   第二行：CategoryTabs（资产分类标签） + CanvasFilterBar（搜索 + 审核）
+//
+// 注：项目/集数选择器已移至 CanvasSidebar。
 // ============================================================
 
-import { Button, message } from 'antd';
-import { FolderOpenOutlined } from '@ant-design/icons';
 import { useTheme } from '@/components/providers/ThemeProvider';
 import { useCanvasStore } from '../store/useCanvasStore';
 import { StageTabs } from './StageTabs';
+import { CategoryTabs } from './CategoryTabs';
 import { CanvasFilterBar } from './CanvasFilterBar';
-import { ProjectSelector } from '../navigation/ProjectSelector';
-import { EpisodeSelector } from '../navigation/EpisodeSelector';
 
 export function CanvasToolbar() {
     const { isDark } = useTheme();
     const workspaceRoot = useCanvasStore((s) => s.workspaceRoot);
-    const setWorkspace = useCanvasStore((s) => s.setWorkspace);
-    const setProjects = useCanvasStore((s) => s.setProjects);
-    const getDataSource = useCanvasStore((s) => s.getDataSource);
     const isScanning = useCanvasStore((s) => s.isScanning);
     const totalCount = useCanvasStore((s) => s.totalCount);
 
-    const handleOpenWorkspace = async () => {
-        try {
-            const dataSource = getDataSource();
-            const dir = await dataSource.openDirectoryDialog();
-            if (dir) {
-                setWorkspace(dir);
-                // 异步加载项目列表
-                try {
-                    const projects = await dataSource.listSubdirs(dir);
-                    setProjects(projects);
-                } catch (err) {
-                    console.error('[CanvasToolbar] 加载项目列表失败:', err);
-                }
-            }
-        } catch (err) {
-            void message.error((err as Error).message || '打开目录失败');
-        }
-    };
-
     const barBg = isDark
         ? 'linear-gradient(180deg, #1E1B4B 0%, #15132E 100%)'
         : 'linear-gradient(180deg, #FFFFFF 0%, #F5F3FF 100%)';
@@ -55,41 +34,23 @@ export function CanvasToolbar() {
                 background: barBg,
             }}
         >
-            {/* 第一行：工作区 + 项目选择器 + 集数选择器 + 阶段标签 */}
+            {/* 第一行：阶段标签 + 无限画布 + 扫描状态 */}
             <div
                 style={{
                     display: 'flex',
                     alignItems: 'center',
                     padding: '6px 12px',
-                    gap: 8,
-                    height: 40,
+                    height: 36,
                 }}
             >
-                <Button
-                    type="text"
-                    size="small"
-                    icon={<FolderOpenOutlined />}
-                    onClick={() => void handleOpenWorkspace()}
-                    style={{
-                        color: isDark ? '#C4B5FD' : '#4338CA',
-                        fontWeight: 500,
-                        fontSize: 12,
-                    }}
-                >
-                    {workspaceRoot ? '切换' : '打开'}
-                </Button>
-
-                {workspaceRoot && <ProjectSelector />}
-                {workspaceRoot && <EpisodeSelector />}
+                <StageTabs />
 
                 <div style={{ flex: 1 }} />
 
-                <StageTabs />
-
                 {isScanning && (
                     <span
                         style={{
-                            fontSize: 11,
+                            fontSize: 12,
                             color: isDark ? '#C4B5FD' : '#6366F1',
                             whiteSpace: 'nowrap',
                         }}
@@ -101,9 +62,10 @@ export function CanvasToolbar() {
                 {totalCount > 0 && (
                     <span
                         style={{
-                            fontSize: 11,
+                            fontSize: 12,
                             color: isDark ? '#6E6B90' : '#9CA3AF',
                             whiteSpace: 'nowrap',
+                            marginLeft: 8,
                         }}
                     >
                         {totalCount} 个文件
@@ -111,7 +73,7 @@ export function CanvasToolbar() {
                 )}
             </div>
 
-            {/* 第二行：筛选栏 */}
+            {/* 第二行：分类标签 + 筛选栏 */}
             {workspaceRoot && (
                 <div
                     style={{
@@ -119,8 +81,11 @@ export function CanvasToolbar() {
                         alignItems: 'center',
                         padding: '4px 12px 6px',
                         borderTop: `1px solid ${borderColor}`,
+                        gap: 12,
                     }}
                 >
+                    <CategoryTabs />
+                    <div style={{ flex: 1 }} />
                     <CanvasFilterBar />
                 </div>
             )}
diff --git a/src/pages/infinite-canvas/toolbar/CategoryTabs.tsx b/src/pages/infinite-canvas/toolbar/CategoryTabs.tsx
new file mode 100644
index 0000000..5d82ff8
--- /dev/null
+++ b/src/pages/infinite-canvas/toolbar/CategoryTabs.tsx
@@ -0,0 +1,253 @@
+// ============================================================
+// CategoryTabs — 内容分类标签栏（阶段感知 + 数量徽标）
+//
+// Assets 阶段 → 资产分类：
+//   全部 | 角色(chr) | 道具(prp) | 场景(set) | 收藏
+//   → 映射到 store.assetTypeFilter + favoriteOnly
+//
+// 其他阶段 → 审核分类：
+//   所有[阶段名] | 收藏 | 待审核 | 通过 | 返修 | 已弃用
+//   → 映射到 store.auditFilter + favoriteOnly
+//
+// 每个标签显示对应数据的数量徽标（基于当前已加载 items 计算）。
+// "收藏"标签额外显示媒体类型细分（视频/图片/音频）。
+// ============================================================
+
+import { useMemo } from 'react';
+import { useTheme } from '@/components/providers/ThemeProvider';
+import { useCanvasStore, type AssetTypeFilter, type AuditStatus } from '../store/useCanvasStore';
+
+interface CategoryTab {
+    key: string;
+    label: string;
+}
+
+// ── 工具：根据扩展名判断媒体类型 ──
+
+type MediaType = 'video' | 'image' | 'audio' | 'other';
+
+const VIDEO_EXTS = new Set(['mp4', 'mov', 'avi', 'mkv', 'webm', 'm4v', 'wmv']);
+const AUDIO_EXTS = new Set(['mp3', 'wav', 'aac', 'flac', 'ogg', 'wma', 'm4a']);
+const IMAGE_EXTS = new Set([
+    'png', 'jpg', 'jpeg', 'gif', 'bmp', 'webp', 'tiff', 'tga', 'exr', 'psd',
+]);
+
+function getMediaType(ext: string): MediaType {
+    const lower = ext.toLowerCase();
+    if (VIDEO_EXTS.has(lower)) return 'video';
+    if (IMAGE_EXTS.has(lower)) return 'image';
+    if (AUDIO_EXTS.has(lower)) return 'audio';
+    return 'other';
+}
+
+// ── 工具：根据目录路径推断资产类型 ──
+
+function inferAssetType(path: string): AssetTypeFilter {
+    const lower = path.toLowerCase();
+    // 路径中包含 \chr\ → 角色，\prp\ → 道具，\set\ → 场景
+    if (lower.includes('\\chr\\') || lower.includes('/chr/')) return '角色';
+    if (lower.includes('\\prp\\') || lower.includes('/prp/')) return '道具';
+    if (lower.includes('\\set\\') || lower.includes('/set/')) return '场景';
+    return '全部';
+}
+
+export function CategoryTabs() {
+    const { isDark } = useTheme();
+    const currentStage = useCanvasStore((s) => s.currentStage);
+    const assetTypeFilter = useCanvasStore((s) => s.assetTypeFilter);
+    const auditFilter = useCanvasStore((s) => s.auditFilter);
+    const favoriteOnly = useCanvasStore((s) => s.favoriteOnly);
+    const items = useCanvasStore((s) => s.items);
+    const setFilters = useCanvasStore((s) => s.setFilters);
+
+    const isAssets = currentStage === 'Assets';
+
+    // 阶段中文名映射
+    const stageLabel: Record<string, string> = {
+        Assets: '资产',
+        Storyboard: '分镜',
+        Keyframe: '关键帧',
+        Video: '视频',
+        Audio: '音频',
+        LipSync: '口型',
+    };
+
+    // ── 分类数量统计 ──
+
+    const categoryCounts = useMemo(() => {
+        const counts: Record<string, number> = {};
+        let favoriteMediaCounts: Record<MediaType, number> = { video: 0, image: 0, audio: 0, other: 0 };
+
+        if (isAssets) {
+            // Assets 阶段：按 assetType (chr/prp/set) 分类统计
+            counts['全部'] = items.length;
+            counts['角色'] = 0;
+            counts['道具'] = 0;
+            counts['场景'] = 0;
+            counts['收藏'] = 0;
+            for (const item of items) {
+                const at = inferAssetType(item.path);
+                if (at === '角色') counts['角色']++;
+                else if (at === '道具') counts['道具']++;
+                else if (at === '场景') counts['场景']++;
+                if (item.metadata?.favorite) {
+                    counts['收藏']++;
+                    favoriteMediaCounts[getMediaType(item.ext)]++;
+                }
+            }
+        } else {
+            // 非 Assets 阶段：按审核状态 + 收藏统计
+            counts['all'] = items.length;
+            counts['pending'] = 0;
+            counts['approved'] = 0;
+            counts['rework'] = 0;
+            counts['deprecated'] = 0;
+            counts['收藏'] = 0;
+            for (const item of items) {
+                const status = item.metadata?.audit_status;
+                if (status) counts[status] = (counts[status] || 0) + 1;
+                if (item.metadata?.favorite) {
+                    counts['收藏']++;
+                    favoriteMediaCounts[getMediaType(item.ext)]++;
+                }
+            }
+        }
+
+        return { counts, favoriteMediaCounts };
+    }, [items, isAssets]);
+
+    // ── 根据阶段决定标签组 ──
+
+    const tabs: CategoryTab[] = useMemo(() => {
+        if (isAssets) {
+            return [
+                { key: '全部', label: '全部' },
+                { key: '角色', label: '角色' },
+                { key: '道具', label: '道具' },
+                { key: '场景', label: '场景' },
+                { key: '收藏', label: '⭐ 收藏' },
+            ];
+        }
+        const label = stageLabel[currentStage] || currentStage;
+        return [
+            { key: 'all', label: `所有${label}` },
+            { key: '收藏', label: '⭐ 收藏' },
+            { key: 'pending', label: '待审核' },
+            { key: 'approved', label: '通过' },
+            { key: 'rework', label: '返修' },
+            { key: 'deprecated', label: '已弃用' },
+        ];
+    }, [isAssets, currentStage]);
+
+    // ── 点击处理 ──
+
+    const handleTabClick = (key: string) => {
+        if (isAssets) {
+            if (key === '收藏') {
+                setFilters({ favoriteOnly: !favoriteOnly, assetTypeFilter: '全部' });
+            } else {
+                setFilters({ assetTypeFilter: key as AssetTypeFilter, favoriteOnly: false });
+            }
+        } else {
+            if (key === '收藏') {
+                setFilters({ favoriteOnly: !favoriteOnly, auditFilter: 'all' });
+            } else {
+                setFilters({ auditFilter: key as AuditStatus | 'all', favoriteOnly: false });
+            }
+        }
+    };
+
+    // ── 判断标签是否激活 ──
+
+    const isTabActive = (tab: CategoryTab): boolean => {
+        if (tab.key === '收藏') return favoriteOnly;
+        if (isAssets) return !favoriteOnly && tab.key === assetTypeFilter;
+        return !favoriteOnly && tab.key === auditFilter;
+    };
+
+    // ── 收藏媒体细分提示 ──
+
+    const buildFavoriteTooltip = () => {
+        const { favoriteMediaCounts } = categoryCounts;
+        const parts: string[] = [];
+        if (favoriteMediaCounts.video > 0) parts.push(`视频:${favoriteMediaCounts.video}`);
+        if (favoriteMediaCounts.image > 0) parts.push(`图片:${favoriteMediaCounts.image}`);
+        if (favoriteMediaCounts.audio > 0) parts.push(`音频:${favoriteMediaCounts.audio}`);
+        if (favoriteMediaCounts.other > 0) parts.push(`其他:${favoriteMediaCounts.other}`);
+        return parts.length > 0 ? ` ${parts.join(' / ')}` : '';
+    };
+
+    const activeBg = isDark ? '#3E3A6A' : '#E0E7FF';
+    const activeColor = isDark ? '#C4B5FD' : '#4338CA';
+    const inactiveColor = isDark ? '#6E6B90' : '#9CA3AF';
+    const badgeBg = isDark ? 'rgba(110, 107, 144, 0.5)' : 'rgba(156, 163, 175, 0.3)';
+
+    return (
+        <div
+            style={{
+                display: 'flex',
+                alignItems: 'center',
+                gap: 0,
+                padding: '2px 4px',
+                borderRadius: 6,
+                background: isDark ? 'rgba(21, 19, 46, 0.8)' : 'rgba(245, 243, 255, 0.8)',
+                border: `1px solid ${isDark ? '#2E2A5A' : '#E5E7EB'}`,
+                overflowX: 'auto',
+                scrollbarWidth: 'none' as const,
+            }}
+        >
+            {tabs.map((tab) => {
+                const isActive = isTabActive(tab);
+                const count = categoryCounts.counts[tab.key] ?? 0;
+                const tooltip = tab.key === '收藏' ? `${count} 个收藏${buildFavoriteTooltip()}` : undefined;
+
+                return (
+                    <button
+                        key={tab.key}
+                        type="button"
+                        onClick={() => handleTabClick(tab.key)}
+                        title={tooltip ?? undefined}
+                        style={{
+                            display: 'flex',
+                            alignItems: 'center',
+                            gap: 3,
+                            padding: '3px 10px',
+                            border: 'none',
+                            borderRadius: 4,
+                            cursor: 'pointer',
+                            fontSize: 13,
+                            fontWeight: isActive ? 600 : 400,
+                            background: isActive ? activeBg : 'transparent',
+                            color: isActive ? activeColor : inactiveColor,
+                            transition: 'all 0.15s',
+                            whiteSpace: 'nowrap',
+                            flexShrink: 0,
+                        }}
+                    >
+                        {tab.label}
+                        {count > 0 && (
+                            <span
+                                style={{
+                                    display: 'inline-flex',
+                                    alignItems: 'center',
+                                    justifyContent: 'center',
+                                    minWidth: 18,
+                                    height: 17,
+                                    padding: '0 4px',
+                                    borderRadius: 8,
+                                    fontSize: 10,
+                                    fontWeight: 600,
+                                    background: badgeBg,
+                                    color: isActive ? activeColor : inactiveColor,
+                                    lineHeight: 1,
+                                }}
+                            >
+                                {count}
+                            </span>
+                        )}
+                    </button>
+                );
+            })}
+        </div>
+    );
+}
diff --git a/src/pages/infinite-canvas/toolbar/StageTabs.tsx b/src/pages/infinite-canvas/toolbar/StageTabs.tsx
index 795a1f5..9f0957f 100644
--- a/src/pages/infinite-canvas/toolbar/StageTabs.tsx
+++ b/src/pages/infinite-canvas/toolbar/StageTabs.tsx
@@ -1,10 +1,16 @@
 // ============================================================
-// StageTabs — 阶段切换标签栏
+// StageTabs — 阶段切换标签栏 + 无限画布按钮
 //
-// 六个阶段：Storyboard / Keyframe / Video / Audio / LipSync / Assets
-// 点击切换 store.currentStage，触发 useDirectoryScan 重新扫描
+// 六个阶段标签：Assets / Storyboard / Keyframe / Video / Audio / LipSync
+// 点击切换 store.currentStage，触发 useDirectoryScan 重新扫描。
+//
+// "无限画布"按钮：通过 IPC 打开独立的画布 BrowserWindow，
+// 关闭其他页面不影响该窗口。
 // ============================================================
 
+import { useCallback } from 'react';
+import { Button } from 'antd';
+import { ExpandOutlined } from '@ant-design/icons';
 import { useTheme } from '@/components/providers/ThemeProvider';
 import { useCanvasStore, type StageType } from '../store/useCanvasStore';
 import { STAGE_CONFIGS } from '../utils/constants';
@@ -13,6 +19,17 @@ export function StageTabs() {
     const { isDark } = useTheme();
     const currentStage = useCanvasStore((s) => s.currentStage);
     const setStage = useCanvasStore((s) => s.setStage);
+    const getProjectPath = useCanvasStore((s) => s.getProjectPath);
+
+    /** 打开独立的无限画布窗口 */
+    const handleOpenCanvasWindow = useCallback(() => {
+        try {
+            const projectPath = getProjectPath();
+            window.canvas?.openWindow(projectPath ?? undefined);
+        } catch (err) {
+            console.error('[StageTabs] 打开无限画布窗口失败:', err);
+        }
+    }, [getProjectPath]);
 
     return (
         <div style={{ display: 'flex', gap: 2, alignItems: 'center' }}>
@@ -29,7 +46,7 @@ export function StageTabs() {
                             border: 'none',
                             borderRadius: 4,
                             cursor: 'pointer',
-                            fontSize: 12,
+                            fontSize: 13,
                             fontWeight: isActive ? 600 : 400,
                             background: isActive
                                 ? isDark
@@ -52,6 +69,38 @@ export function StageTabs() {
                     </button>
                 );
             })}
+
+            {/* 分隔线 */}
+            <div
+                style={{
+                    width: 1,
+                    height: 18,
+                    background: isDark ? '#3E3A6A' : '#D1D5DB',
+                    margin: '0 4px',
+                }}
+            />
+
+            {/* 无限画布按钮 */}
+            <Button
+                size="small"
+                icon={<ExpandOutlined />}
+                onClick={() => void handleOpenCanvasWindow()}
+                title="在新窗口中打开无限画布（关闭其他页面不影响此窗口）"
+                style={{
+                    fontSize: 12,
+                    fontWeight: 500,
+                    borderRadius: 4,
+                    border: `1px solid ${isDark ? '#3E3A6A' : '#C7D2FE'}`,
+                    background: isDark
+                        ? 'rgba(62, 58, 106, 0.4)'
+                        : 'rgba(224, 231, 255, 0.6)',
+                    color: isDark ? '#C4B5FD' : '#4338CA',
+                    padding: '2px 10px',
+                    transition: 'all 0.15s',
+                }}
+            >
+                无限画布
+            </Button>
         </div>
     );
 }
diff --git a/src/pages/infinite-canvas/toolbar/index.ts b/src/pages/infinite-canvas/toolbar/index.ts
index 001be25..32aac9f 100644
--- a/src/pages/infinite-canvas/toolbar/index.ts
+++ b/src/pages/infinite-canvas/toolbar/index.ts
@@ -5,3 +5,4 @@
 export { CanvasToolbar } from './CanvasToolbar';
 export { CanvasFilterBar } from './CanvasFilterBar';
 export { StageTabs } from './StageTabs';
+export { CategoryTabs } from './CategoryTabs';