diff --git a/.memory/worklog.json b/.memory/worklog.json
index 8693e4f..974f79a 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -3037,6 +3037,19 @@
       "type": "session-heartbeat",
       "message": "Codex 会话活跃 · 最近命令：codex · 3 项未提交变更 · 最近提交：auto-save 2026-05-14 03:14 (~2)",
       "files_changed": 3
+    },
+    {
+      "ts": "2026-05-14T03:20:46+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-14 03:20 (~4)",
+      "hash": "2144c37",
+      "files_changed": 4
+    },
+    {
+      "ts": "2026-05-13T19:23:12Z",
+      "type": "session-heartbeat",
+      "message": "Claude 会话活跃 · 最近命令：claude · 1 项未提交变更 · 最近提交：auto-save 2026-05-14 03:20 (~4)",
+      "files_changed": 1
     }
   ]
 }
diff --git a/docs/source-analysis.html b/docs/source-analysis.html
index 3e4aef7..c2209fd 100644
--- a/docs/source-analysis.html
+++ b/docs/source-analysis.html
@@ -817,6 +817,18 @@ api/main.py
         <h2>变更记录</h2>
         <p>这个记录不是 git log 的替代品。它记录“产品理解发生了什么变化、影响了哪些源码、你以后描述需求时该怎么说”。后续每次改功能都要补一条。</p>
         <div class="changelog">
+          <article class="change">
+            <header>
+              <h3>2026-05-14 · 吸附工作面板贴近视口边缘</h3>
+              <span class="tag violet">Canvas Panel</span>
+              <span class="tag blue">Dock</span>
+            </header>
+            <div class="body">
+              <p><strong>问题：</strong>视频抽帧面板吸附左侧 / 右侧时顶部仍留出明显空白；这不是实际板块遮挡，而是面板吸附样式里硬编码了 <code>top: 72</code> 和对应的高度预留。关键帧面板也保留了旧 storyboard 顶栏避让逻辑。</p>
+              <p><strong>改动：</strong>新增统一吸附边距常量，视频抽帧面板和关键帧详情面板吸附时都贴近视口边缘，仅保留 8px 安全边距；移除关键帧面板对旧 <code>data-storyboard-dock</code> / <code>data-storyboard-bar</code> 的避让查询。</p>
+              <p><strong>影响：</strong><code>web/components/nodes/index.tsx</code>、<code>docs/source-analysis.html</code>。后续画布工作面板的吸附语义统一为“贴边”，不是为顶部旧板块预留空间。</p>
+            </div>
+          </article>
           <article class="change">
             <header>
               <h3>2026-05-14 · 输入视频双击改为画布抽帧面板</h3>
diff --git a/web/components/nodes/index.tsx b/web/components/nodes/index.tsx
index 9e62a49..35aa44c 100644
--- a/web/components/nodes/index.tsx
+++ b/web/components/nodes/index.tsx
@@ -115,6 +115,7 @@ function clamp(value: number, min: number, max: number) {
 }
 
 const THUMBNAIL_HEIGHT = 176
+const FLOATING_PANEL_EDGE_INSET = 8
 
 function canvasThumbnailAnchor(root: HTMLDivElement | null, target: HTMLElement) {
   if (!root) return { x: 160, y: 0 }
@@ -727,7 +728,7 @@ export function VideoFramePanelNode({ data }: any) {
         width: panelWidth,
         height: panelHeight,
         maxWidth: "calc(100vw - 32px)",
-        maxHeight: "calc(100vh - 84px)",
+        maxHeight: `calc(100vh - ${FLOATING_PANEL_EDGE_INSET * 2}px)`,
         boxShadow: "0 30px 80px -20px rgba(0,0,0,0.75), 0 0 0 1px rgba(255,255,255,0.05)",
       }}
     >
@@ -858,10 +859,10 @@ export function VideoFramePanelNode({ data }: any) {
   if (docked && typeof document !== "undefined") {
     const fixedStyle =
       dock === "left"
-        ? { left: 16, top: 72 }
+        ? { left: FLOATING_PANEL_EDGE_INSET, top: FLOATING_PANEL_EDGE_INSET }
         : dock === "right"
-          ? { right: 16, top: 72 }
-          : { left: "50%", bottom: 16, transform: "translateX(-50%)" }
+          ? { right: FLOATING_PANEL_EDGE_INSET, top: FLOATING_PANEL_EDGE_INSET }
+          : { left: "50%", bottom: FLOATING_PANEL_EDGE_INSET, transform: "translateX(-50%)" }
     return createPortal(
       <div className="fixed z-[240]" style={fixedStyle}>
         {panel}
@@ -1486,39 +1487,16 @@ export function KeyframePanelNode({ data }: any) {
   const d: NodeData = data
   const { getZoom } = useReactFlow()
   const panelRef = useRef<HTMLDivElement>(null)
-  const [pinRect, setPinRect] = useState<{ left: number; top: number }>({ left: 24, top: 72 })
+  const [pinRect, setPinRect] = useState<{ left: number; top: number }>({
+    left: FLOATING_PANEL_EDGE_INSET,
+    top: FLOATING_PANEL_EDGE_INSET,
+  })
   const scale = d.framePanelScale ?? 1
   const pinned = d.framePanelPinned ?? false
 
-  const getStoryboardDockTop = () => {
-    if (typeof window === "undefined") return 64
-    const dock = document.querySelector<HTMLElement>('[data-storyboard-dock="true"]')
-    const bar = document.querySelector<HTMLElement>('[data-storyboard-bar="true"]')
-    const bottom = (dock ?? bar)?.getBoundingClientRect().bottom ?? 52
-    return Math.max(56, Math.min(window.innerHeight - 120, bottom + 10))
-  }
-
   useEffect(() => {
-    if (!pinned || typeof window === "undefined") return
-
-    const syncDock = () => {
-      setPinRect({ left: 16, top: getStoryboardDockTop() })
-    }
-
-    syncDock()
-    const bar = document.querySelector<HTMLElement>('[data-storyboard-dock="true"]')
-      ?? document.querySelector<HTMLElement>('[data-storyboard-bar="true"]')
-    let observer: ResizeObserver | null = null
-    if (bar && "ResizeObserver" in window) {
-      observer = new ResizeObserver(syncDock)
-      observer.observe(bar)
-    }
-    window.addEventListener("resize", syncDock)
-
-    return () => {
-      observer?.disconnect()
-      window.removeEventListener("resize", syncDock)
-    }
+    if (!pinned) return
+    setPinRect({ left: FLOATING_PANEL_EDGE_INSET, top: FLOATING_PANEL_EDGE_INSET })
   }, [pinned])
 
   if (!d.job || d.expandedFrame === null) return null
@@ -1535,7 +1513,7 @@ export function KeyframePanelNode({ data }: any) {
     if (!pinned) {
       const zoom = getZoom()
       setScale(scale * zoom)
-      setPinRect({ left: 16, top: getStoryboardDockTop() })
+      setPinRect({ left: FLOATING_PANEL_EDGE_INSET, top: FLOATING_PANEL_EDGE_INSET })
     }
     d.onFramePanelPinnedChange?.(!pinned)
   }