修复画板提示与失效项目跳转

画板参考图选择提示改为持续显示并支持手动关闭。

显式项目访问失效时同步切回项目页状态。

补充提示关闭和项目失效回退测试。

src/components/image-editor/useImageCanvasGenerationWorkflow.ts

@@ -189,7 +189,6 @@ const LAST_CHARACTER_SPEC_REFERENCE_CACHE_KEY =
   'genarrative.imageCanvas.lastCharacterSpecReference';
 const LAST_ICON_SPEC_REFERENCE_CACHE_KEY =
   'genarrative.imageCanvas.lastIconSpecReference';
-const REFERENCE_PICK_WARNING_DISMISS_MS = 2600;
 const INVALID_CHARACTER_SPEC_WARNING =
   '选择的图片不是角色规范图，请选择生成规范里的角色规范。';
 const INVALID_ICON_SPEC_WARNING =
@@ -697,16 +696,6 @@ export function useImageCanvasGenerationWorkflow({
     generateDialog?.mode,
   ]);
 
-  useEffect(() => {
-    if (!referencePickWarning) {
-      return undefined;
-    }
-    const warningTimer = window.setTimeout(() => {
-      setReferencePickWarning(null);
-    }, REFERENCE_PICK_WARNING_DISMISS_MS);
-    return () => window.clearTimeout(warningTimer);
-  }, [referencePickWarning]);
-
   const quickEditSourceLayer = quickEditPanel
     ? (layers.find((layer) => layer.id === quickEditPanel.sourceLayerId) ??
       null)