feat: 前端改为通过签名地址读取生成资源

src/components/CharacterAnimator.test.tsx

@@ -1,11 +1,19 @@
 // @vitest-environment jsdom
 
 import { render, screen } from '@testing-library/react';
-import { describe, expect, it } from 'vitest';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { AnimationState, type Character } from '../types';
 import { CharacterAnimator } from './CharacterAnimator';
 
+vi.mock('../hooks/useResolvedAssetReadUrl', () => ({
+  useResolvedAssetReadUrl: vi.fn((source: string | null | undefined) => ({
+    resolvedUrl: source?.trim() ?? '',
+    isResolving: false,
+    shouldResolve: false,
+  })),
+}));
+
 function buildCharacter(overrides: Partial<Character> = {}): Character {
   return {
     id: 'generated-role',
@@ -26,6 +34,10 @@ function buildCharacter(overrides: Partial<Character> = {}): Character {
 }
 
 describe('CharacterAnimator portrait fallbacks', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
   it('keeps idle fallback static on the portrait when idle animation is missing', () => {
     render(
       <CharacterAnimator