diff --git a/frontend/app/features/admin/SystemAdminRoute.tsx b/frontend/app/features/admin/SystemAdminRoute.tsx
index e70ea5b..4fb9cd6 100644
--- a/frontend/app/features/admin/SystemAdminRoute.tsx
+++ b/frontend/app/features/admin/SystemAdminRoute.tsx
@@ -1,13 +1,17 @@
+import { useAuth } from "../../context/AuthContext";
 import { useScriptWorkspaceStore } from "../platform/state/scriptWorkspaceStore";
 import { useUiStore } from "../platform/state/uiStore";
 import { SystemAdminPage } from "./SystemAdminPage";
 
 export default function SystemAdminRoute() {
+  const { currentWorkspace, user } = useAuth();
   const setApiOnline = useScriptWorkspaceStore((s) => s.setApiOnline);
   const pushToast = useUiStore((s) => s.pushToast);
 
   return (
     <SystemAdminPage
+      // 切换 workspace / 用户时强制重 mount,清空内部 state 并重新拉取
+      key={`${user?.user_id ?? "anon"}-${currentWorkspace?.workspace_id ?? "none"}`}
       onNotify={pushToast}
       onConnectionChange={setApiOnline}
     />
diff --git a/frontend/app/features/schedules/SchedulesPageRoute.tsx b/frontend/app/features/schedules/SchedulesPageRoute.tsx
index 854819c..dcd6129 100644
--- a/frontend/app/features/schedules/SchedulesPageRoute.tsx
+++ b/frontend/app/features/schedules/SchedulesPageRoute.tsx
@@ -1,13 +1,17 @@
+import { useAuth } from "../../context/AuthContext";
 import { useScriptWorkspaceStore } from "../platform/state/scriptWorkspaceStore";
 import { useUiStore } from "../platform/state/uiStore";
 import SchedulePage from "./SchedulePage";
 
 export default function SchedulesPageRoute() {
+  const { currentWorkspace, user } = useAuth();
   const setApiOnline = useScriptWorkspaceStore((s) => s.setApiOnline);
   const pushToast = useUiStore((s) => s.pushToast);
 
   return (
     <SchedulePage
+      // 切换 workspace / 用户时强制重 mount,清空内部 state 并重新拉取
+      key={`${user?.user_id ?? "anon"}-${currentWorkspace?.workspace_id ?? "none"}`}
       onNotify={pushToast}
       onConnectionChange={setApiOnline}
     />
diff --git a/frontend/app/routes/platform.tsx b/frontend/app/routes/platform.tsx
index ac20865..6ba81f5 100644
--- a/frontend/app/routes/platform.tsx
+++ b/frontend/app/routes/platform.tsx
@@ -78,13 +78,16 @@ function AuthenticatedLayout() {
 
   const [sidebarCollapsed, setSidebarCollapsed] = useState(false);
 
-  // 绑定 api 到 script workspace store
+  // 绑定 api 到 script workspace store。
+  // 必须放在 render body(同步),不能用 useEffect([api]) + cleanup —
+  // 后者会在 deps 变化时先 cleanup(null),再让 ScriptsPage 的 useEffect 跑,
+  // 此时 _api 为 null,load() 抛 "script workspace API 未绑定"。
+  bindScriptWorkspaceApi(api);
   useEffect(() => {
-    bindScriptWorkspaceApi(api);
     return () => {
       bindScriptWorkspaceApi(null);
     };
-  }, [api]);
+  }, []);
 
   // 心跳 / cleanup / 切页结束编辑 / 卸载前释放
   useEditSessionLifecycle({ activePage });