修复进行中会话有时无法被取消

src/contexts/acp-connections-context.tsx

@@ -1893,22 +1893,11 @@ export function AcpConnectionsProvider({ children }: { children: ReactNode }) {
     []
   )
 
-  const cancel = useCallback(
-    async (contextKey: string) => {
-      const conn = storeRef.current.connections.get(contextKey)
-      if (!conn) return
-      await acpCancel(conn.connectionId)
-      // Optimistically transition status so the UI stops showing
-      // "responding" immediately.  If the agent was slow to respond to
-      // the CancelNotification the frontend would otherwise stay stuck
-      // in the "prompting" state indefinitely.
-      const current = storeRef.current.connections.get(contextKey)
-      if (current?.status === "prompting") {
-        dispatch({ type: "STATUS_CHANGED", contextKey, status: "connected" })
-      }
-    },
-    [dispatch]
-  )
+  const cancel = useCallback(async (contextKey: string) => {
+    const conn = storeRef.current.connections.get(contextKey)
+    if (!conn) return
+    await acpCancel(conn.connectionId)
+  }, [])
 
   const respondPermission = useCallback(
     async (contextKey: string, requestId: string, optionId: string) => {