删除输入区里只会在挂载时跑一次的草稿清空 effect

- apps/ai-game-creator-shell/src/features/project-workspace/ResourceReferenceInput.tsx 删除依赖只有 resetPromptPolish（稳定 useCallback）的 effect
- 该 effect 读 liveDraftRef.current 却把它排除在依赖外，实际只在挂载时执行一次；清空草稿时重置润色状态的逻辑已由 OnChangePlugin 内联承担

apps/ai-game-creator-shell/src/features/project-workspace/ResourceReferenceInput.tsx

@@ -1138,13 +1138,6 @@ function ResourceReferenceEditor({
     return () => form.removeEventListener('submit', handleFormSubmit, true);
   }, [rootRef]);
 
-  // 草稿发出去或被清空后重新开始一轮：清掉润色结果与「本轮已确认」标记。
-  useEffect(() => {
-    if (liveDraftRef.current.content.length > 0) return;
-    resetPromptPolish();
-    acknowledgedDraftKeyRef.current = null;
-  }, [resetPromptPolish]);
-
   const renderMentionMenu: MenuRenderFn<
     ResourceMentionOption | SkillMentionOption
   > = useCallback(