diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index e5b74929..68c1e3e4 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -274,17 +274,22 @@ export function streamCopilot(
 /**
  * 订阅一次运行的事件流。
  *
- * 先补历史再接实时由后端保证，这里只负责断线重连 —— 重连时带上已收到的最大
- * seq，所以不会重复也不会丢事件。
+ * 先补历史再接实时由后端保证，这里负责断线重连——重连时带上已收到的最大 seq。
+ *
+ * `after` 必须由调用方给：lastSeq 是这次调用的闭包局部量，跨调用会归零。
+ * 审批恢复时会重新 attachRun，不传 after 就是 after=0，后端按 `seq > after`
+ * 把整条历史再推一遍，而消费方多半是无条件追加——事件就这么重复累积了。
+ * 已经有事件在手的场景（重新接上一条运行）应当传当前最大 seq。
  */
 export function streamRun(
   runId: string,
   onEvent: (event: RunEvent) => void,
   onClose?: () => void,
+  after = 0,
 ): () => void {
   let socket: WebSocket | null = null
   let closed = false
-  let lastSeq = 0
+  let lastSeq = after
   let retry = 0
 
   const connect = () => {
diff --git a/frontend/src/pages/ChatPage.tsx b/frontend/src/pages/ChatPage.tsx
index 342cfc14..9a7d2937 100644
--- a/frontend/src/pages/ChatPage.tsx
+++ b/frontend/src/pages/ChatPage.tsx
@@ -186,15 +186,12 @@ function Approvals({ turn }: { turn: ChatTurn }) {
   const reattach = useChat((s) => s.reattach)
   const pending = approvals.filter((a) => a.run_id === turn.run?.id && a.status === 'pending')
 
-  // 审批处理完后运行会继续，重新接上事件流才能看到后续
-  useEffect(() => {
-    if (turn.phase === 'waiting' && !pending.length) void reattach(turn.id)
-  }, [pending.length, turn.phase, turn.id, reattach])
-
   if (!pending.length) return null
   return (
     <div className="mt-2 overflow-hidden rounded border" style={{ borderColor: 'var(--warn)' }}>
-      {pending.map((a) => <ApprovalCard key={a.id} approval={a} />)}
+      {pending.map((a) => (
+        <ApprovalCard key={a.id} approval={a} onResolved={() => reattach(turn.id)} />
+      ))}
     </div>
   )
 }
diff --git a/frontend/src/run/RunPanel.tsx b/frontend/src/run/RunPanel.tsx
index 3943d736..6d1f1852 100644
--- a/frontend/src/run/RunPanel.tsx
+++ b/frontend/src/run/RunPanel.tsx
@@ -172,7 +172,18 @@ function RunLauncher() {
 
 // -------------------------------------------------------------------------
 
-export function ApprovalCard({ approval }: { approval: any }) {
+/**
+ * 人工介入卡片。
+ *
+ * onResolved 是给非画布场景用的：这个组件被对话页和运行页复用，而默认的
+ * "恢复后重新接上事件流"走的是 studio store——在对话页里用就会同时开两条
+ * 订阅（一条 chat 的、一条 studio 的），两边各收一份事件。谁用谁负责重新
+ * 接流，是唯一不会打架的分工。
+ */
+export function ApprovalCard({ approval, onResolved }: {
+  approval: any
+  onResolved?: (runId: string) => void | Promise<void>
+}) {
   const toast = useToast()
   const refreshApprovals = useCatalog((s) => s.refreshApprovals)
   const attachRun = useStudio((s) => s.attachRun)
@@ -192,7 +203,9 @@ export function ApprovalCard({ approval }: { approval: any }) {
         ...(approval.mode !== 'approve' ? { value } : {}),
       })
       await refreshApprovals()
-      await attachRun(approval.run_id) // 恢复后重新接上事件流
+      // 恢复后重新接上事件流：调用方给了 onResolved 就听它的
+      if (onResolved) await onResolved(approval.run_id)
+      else await attachRun(approval.run_id)
       // 驳回在"补充输入/编辑草稿"模式下会终止整个运行（图上没有 rejected 那条
       // 出口边），说清楚比笼统一句"已驳回"诚实
       toast(
diff --git a/frontend/src/store/chat.ts b/frontend/src/store/chat.ts
index b1e7a12f..10b7f58f 100644
--- a/frontend/src/store/chat.ts
+++ b/frontend/src/store/chat.ts
@@ -41,6 +41,11 @@ export interface ChatTurn {
   output: Record<string, any> | null
   error: string
   startedAt: number
+  /** 已收到的最大事件 seq。重新接流时要带上，否则后端把历史整条重推 */
+  lastSeq: number
+  /** 这一轮自己的取消句柄。放 turn 上而不是 store 上：store 单值会被
+   *  下一轮 ask 覆盖，上一轮的 WebSocket 就再也关不掉了 */
+  cancel: (() => void) | null
 }
 
 interface ChatState {
@@ -88,6 +93,7 @@ export const useChat = create<ChatState>((set, get) => ({
           id, question, phase: 'planning', status: PHASE_TEXT.planning,
           thinking: '', graph: null, explanation: '', run: null,
           steps: [], output: null, error: '', startedAt: Date.now(),
+          lastSeq: 0, cancel: null,
         },
       ],
     }))
@@ -148,22 +154,31 @@ export const useChat = create<ChatState>((set, get) => ({
         set({ busy: false, cancel: null })
       },
     )
+    patch(() => ({ cancel: cancelCopilot }))
     set({ cancel: cancelCopilot })
   },
 
   stop: () => {
+    // 只停最后一轮。把所有非终态 turn 一律标成"已取消"会误杀正等人工介入的
+    // 历史轮次——那些是等着用户回来处理的，不是卡住的。
+    const turns = get().turns
+    const last = turns[turns.length - 1]
+    last?.cancel?.()
     get().cancel?.()
     set((s) => ({
       busy: false,
       cancel: null,
       turns: s.turns.map((t) =>
-        t.phase === 'done' || t.phase === 'error' ? t : { ...t, phase: 'error', error: '已取消' },
+        t.id === last?.id && !['done', 'error', 'waiting'].includes(t.phase)
+          ? { ...t, phase: 'error', error: '已取消', cancel: null }
+          : t,
       ),
     }))
   },
 
   clear: () => {
     get().cancel?.()
+    get().turns.forEach((t) => t.cancel?.())   // 每轮各有各的订阅，逐个关
     set({ turns: [], busy: false, cancel: null })
   },
 
@@ -174,7 +189,7 @@ export const useChat = create<ChatState>((set, get) => ({
       set((s) => ({ turns: s.turns.map((t) => (t.id === turnId ? { ...t, ...fn(t) } : t)) }))
     patch(() => ({ phase: 'running', status: PHASE_TEXT.running }))
     set({ busy: true })
-    watch(turn.run.id, turnId, patch, set)
+    watch(turn.run.id, turnId, patch, set, turn.lastSeq)
   },
 }))
 
@@ -202,9 +217,12 @@ function watch(
   turnId: string,
   patch: (fn: (t: ChatTurn) => Partial<ChatTurn>) => void,
   set: any,
+  after = 0,
 ) {
   const stop = streamRun(runId, (event: RunEvent) => {
     const d: any = event.data ?? {}
+    // 记下进度：审批恢复要重新接流，带上它才不会把历史再收一遍
+    patch((t) => ({ lastSeq: Math.max(t.lastSeq ?? 0, event.seq ?? 0) }))
     switch (event.type) {
       case 'tool.start': {
         const tool = String(d.tool ?? '')
@@ -261,7 +279,10 @@ function watch(
         void finish(runId, turnId, patch, set)
         break
     }
-  })
+  }, undefined, after)
+  // 句柄同时挂在 turn 和 store 上：turn 上的用于精确关闭这一轮，
+  // store 上的是"当前活跃流"的快捷方式
+  patch(() => ({ cancel: stop }))
   set({ cancel: stop })
 }
 
diff --git a/frontend/src/store/studio.ts b/frontend/src/store/studio.ts
index 31bd3e03..9115205b 100644
--- a/frontend/src/store/studio.ts
+++ b/frontend/src/store/studio.ts
@@ -502,10 +502,17 @@ export const useStudio = create<StudioState>((set, get) => ({
 
   attachRun: async (runId) => {
     get().unsubscribe?.()
+    // 手上已有的事件不要再收一遍。审批恢复会走到这里，而 applyEvent 是无条件
+    // 追加——不传 after 的话后端把整条历史重推一遍，时间线上每条都出现两次。
+    const current = get()
+    const after = current.run?.id === runId
+      ? current.events.reduce((max, e) => Math.max(max, e.seq ?? 0), 0)
+      : 0
     const stop = streamRun(
       runId,
       (event) => get().applyEvent(event),
       () => set({ streaming: false }),
+      after,
     )
     set({ unsubscribe: stop, streaming: true })
   },