diff --git a/apps/web/src/pages/editing-planner/components/timeline/hooks/usePlayheadDrag.ts b/apps/web/src/pages/editing-planner/components/timeline/hooks/usePlayheadDrag.ts
deleted file mode 100644
index fa189d090..000000000
--- a/apps/web/src/pages/editing-planner/components/timeline/hooks/usePlayheadDrag.ts
+++ /dev/null
@@ -1,71 +0,0 @@
-import { useState, useCallback, useEffect, useRef } from "react"
-
-interface UsePlayheadDragOptions {
-  /** 当前播放时间（秒） */
-  currentTime: number
-  /** 缩放：每秒像素数 */
-  pps: number
-  /** 总时长（秒） */
-  totalDuration: number
-  /** 播放头跳转回调 */
-  onSeek?: (time: number) => void
-}
-
-/**
- * 播放头拖拽 Hook
- * 封装播放头的 mousedown/mousemove/mouseup 拖拽逻辑
- */
-export const usePlayheadDrag = ({ pps, totalDuration, onSeek }: UsePlayheadDragOptions) => {
-  const [playheadDragging, setPlayheadDragging] = useState(false)
-  const trackRef = useRef<HTMLDivElement>(null)
-
-  /* ── 播放头拖拽全局 mousemove/mouseup ── */
-  useEffect(() => {
-    if (!playheadDragging) return
-
-    const handleMouseMove = (e: MouseEvent) => {
-      const trackEl = trackRef.current
-      if (!trackEl) return
-      const rect = trackEl.getBoundingClientRect()
-      const x = e.clientX - rect.left + trackEl.scrollLeft
-      const time = Math.max(0, Math.min(x / pps, totalDuration))
-      onSeek?.(Math.round(time * 10) / 10)
-    }
-
-    const handleMouseUp = () => {
-      setPlayheadDragging(false)
-    }
-
-    document.addEventListener("mousemove", handleMouseMove)
-    document.addEventListener("mouseup", handleMouseUp)
-    return () => {
-      document.removeEventListener("mousemove", handleMouseMove)
-      document.removeEventListener("mouseup", handleMouseUp)
-    }
-  }, [playheadDragging, pps, totalDuration, onSeek])
-
-  /* ── 播放头拖拽开始 ── */
-  const handlePlayheadMouseDown = useCallback((e: React.MouseEvent) => {
-    e.preventDefault()
-    e.stopPropagation()
-    setPlayheadDragging(true)
-  }, [])
-
-  /* ── 标尺点击跳转播放头 ── */
-  const handleRulerClick = useCallback(
-    (e: React.MouseEvent<HTMLDivElement>) => {
-      const rect = e.currentTarget.getBoundingClientRect()
-      const x = e.clientX - rect.left
-      const time = Math.max(0, Math.min(x / pps, totalDuration))
-      onSeek?.(Math.round(time * 10) / 10)
-    },
-    [pps, totalDuration, onSeek],
-  )
-
-  return {
-    trackRef,
-    playheadDragging,
-    handlePlayheadMouseDown,
-    handleRulerClick,
-  }
-}