diff --git a/apps/ai-game-creator-shell/src/App.tsx b/apps/ai-game-creator-shell/src/App.tsx
index 77ea9afae..eed5fe807 100644
--- a/apps/ai-game-creator-shell/src/App.tsx
+++ b/apps/ai-game-creator-shell/src/App.tsx
@@ -2075,6 +2075,7 @@ export function App({
   const agentRuntimeResumeProjectPathRef = useRef<string | null>(null);
   const agentRunHistoryLoadingMoreRef = useRef(false);
   const initialProjectOpenedRef = useRef(false);
+  const supervisorChatDraftHydratedRef = useRef(false);
   const pendingUiConfirmationActionRef = useRef<(() => void) | null>(null);
   const queueRunLocalShortcutRef = useRef<() => void>(() => undefined);
   const executeRunLocalRef = useRef<(announceToChat: boolean) => void>(
@@ -3078,6 +3079,16 @@ export function App({
     if (!supervisorChatOnly) {
       return;
     }
+    // 独立总控聊天窗口的挂载路径直接走 loadProjectConversation，不经过
+    // openWorkspace，所以草稿的读取要在这里补一次；只回填一次，之后的渲染不再
+    // 覆盖用户正在输入的内容。输入框尚未挂载时不移除守卫，等它出现再水合。
+    if (!supervisorChatDraftHydratedRef.current) {
+      const persistedDraft = readSupervisorChatDraft(initialProjectPath);
+      if (persistedDraft && chatComposerRef.current) {
+        supervisorChatDraftHydratedRef.current = true;
+        chatComposerRef.current.replaceText(persistedDraft);
+      }
+    }
     const draft = chatComposerRef.current?.getDraft();
     if (!draft || !hasMeaningfulDirectCodexContent(draft.content)) {
       return;