修复创作页精选作者和瀑布流宽度

公开精选接口返回作者展示名和陶泥号

前端精选作者只使用公开展示字段，不再兜底内部用户 ID

约束精选瀑布流多列容器宽度，避免 release 桌面端横向撑宽

补充前后端回归测试和项目记忆文档

src/components/creation-home/CreationLandingView.test.tsx

@@ -235,7 +235,9 @@ describe('CreationLandingView', () => {
         provider: 'provider',
         taskId: 'task-1',
         assetKind: 'character',
-        authorName: '创作者A',
+        ownerUserId: 'user-internal-author',
+        authorDisplayName: '创作者A',
+        authorPublicUserCode: 'SY-00000042',
         priceMudPoints: 20,
       },
     ]);
@@ -249,6 +251,7 @@ describe('CreationLandingView', () => {
     expect(card).toBeTruthy();
     expect(within(card as HTMLElement).getByText('character hero prompt')).toBeTruthy();
     expect(within(card as HTMLElement).getByText('创作者A')).toBeTruthy();
+    expect(within(card as HTMLElement).queryByText('user-internal-author')).toBeNull();
     expect(within(card as HTMLElement).getByText('20泥点')).toBeTruthy();
   });
 
@@ -270,7 +273,8 @@ describe('CreationLandingView', () => {
         provider: 'provider',
         taskId: 'task-1',
         assetKind: 'character',
-        authorName: '创作者A',
+        authorDisplayName: '创作者A',
+        authorPublicUserCode: 'SY-00000042',
         priceMudPoints: 20,
       },
       {

src/components/creation-home/creationShowcaseModel.test.ts

@@ -76,21 +76,41 @@ describe('creationShowcaseModel', () => {
     expect(items[0]?.label).toBe('公开素材');
   });
 
-  it('uses the public project resource owner user id as showcase author fallback', () => {
+  it('uses public author fields without falling back to internal owner user id', () => {
     const items = buildCreationShowcaseItems({
       activeTab: 'characters',
       projectResources: [
         createResource({
-          resourceId: 'owner-resource',
-          label: '作者兜底素材',
+          resourceId: 'display-author-resource',
+          label: '展示名作者素材',
           assetKind: 'character',
           ownerUserId: 'user-author-1',
+          authorDisplayName: '作者昵称',
+          authorPublicUserCode: 'SY-00000001',
+        }),
+        createResource({
+          resourceId: 'code-author-resource',
+          label: '陶泥号作者素材',
+          assetKind: 'character',
+          ownerUserId: 'user-author-2',
+          authorPublicUserCode: 'SY-00000002',
+        }),
+        createResource({
+          resourceId: 'owner-only-resource',
+          label: '内部id素材',
+          assetKind: 'character',
+          ownerUserId: 'user-author-3',
+          authorName: 'user-author-3',
+          ownerName: 'user-author-3',
         }),
       ],
     });
 
-    expect(items).toHaveLength(1);
-    expect(items[0]?.author).toBe('user-author-1');
+    expect(items.map((item) => item.author)).toEqual([
+      '作者昵称',
+      'SY-00000002',
+      '-',
+    ]);
   });
 
   it('deduplicates canvas copies that point back to the same generated resource', () => {
@@ -137,7 +157,7 @@ describe('creationShowcaseModel', () => {
           assetKind: 'spec',
           prompt: '规范提示词',
           priceMudPoints: 5,
-          authorName: '创作者A',
+          authorDisplayName: '创作者A',
         }),
         createResource({
           resourceId: 'character-1',

src/components/creation-home/creationShowcaseModel.ts

@@ -62,14 +62,7 @@ const SHOWCASE_COST_KEYS = [
   'mudPointCost',
 ] as const;
 
-const SHOWCASE_AUTHOR_KEYS = [
-  'authorName',
-  'creatorName',
-  'ownerLabel',
-  'ownerName',
-  'authorDisplayName',
-  'ownerUserId',
-] as const;
+const SHOWCASE_AUTHOR_KEYS = ['authorDisplayName', 'authorPublicUserCode'] as const;
 
 export const SHOWCASE_TABS: Array<{ id: ShowcaseTabId; label: string }> = [
   { id: 'packs', label: '素材包' },