修复图标规范优化细节

空响应纳入有界重试，并为优化请求设置输出 token 上限。
修复题材提示词括号并补充回归测试。
将优化请求身份更新移入已提交 effect，避免并发渲染污染。
移除冗余类型注释并同步编辑器文档。

src/components/image-editor/ImageCanvasEditorTypes.ts

@@ -152,7 +152,6 @@ export type EditorAssetFolder = {
   persisted: boolean;
 };
 
-// 这里指规范的类型
 export type SpecGenerationType = 'character' | 'icon' | 'custom';
 
 export type SpecFormValues = {

src/components/image-editor/ImageCanvasSpecGenerationPanelView.tsx

@@ -155,19 +155,26 @@ export function ImageCanvasSpecGenerationPanelView({
     null,
   );
   const optimizationDialogKey = `${dialog.id ?? 'active'}:${dialog.mode}:${dialog.specType ?? ''}`;
-  const activeOptimizationDialogKeyRef = useRef(optimizationDialogKey);
+  const activeOptimizationDialogKeyRef = useRef<string | null>(
+    optimizationDialogKey,
+  );
   const optimizationRequestVersionsRef = useRef({
     playSetting: 0,
     artStyle: 0,
   });
-  activeOptimizationDialogKeyRef.current = optimizationDialogKey;
   useEffect(() => {
+    activeOptimizationDialogKeyRef.current = optimizationDialogKey;
     optimizationRequestVersionsRef.current.playSetting += 1;
     optimizationRequestVersionsRef.current.artStyle += 1;
     setPlaySettingOptimization(INITIAL_ICON_SPEC_OPTIMIZATION_STATE);
     setArtStyleOptimization(INITIAL_ICON_SPEC_OPTIMIZATION_STATE);
     setOptimizationError(null);
-  }, [dialog.id, dialog.mode, dialog.specType]);
+    return () => {
+      if (activeOptimizationDialogKeyRef.current === optimizationDialogKey) {
+        activeOptimizationDialogKeyRef.current = null;
+      }
+    };
+  }, [optimizationDialogKey]);
   const isOptimizingIconSpec =
     playSettingOptimization.optimizing || artStyleOptimization.optimizing;
   const hasRequiredIconSpecValues =