feat(ECR-011): 昵称、首页贴士与档案 Self 唯一/合盘交叉校验

每账号仅一条 self（migration 40902）；合盘只选 TA；账号昵称可改；首页穿衣/颜色/养生贴士。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/user-h5/src/pages/ImageCardPage.spec.ts

@@ -7,7 +7,9 @@ const { api } = vi.hoisted(() => ({
     authMe: vi.fn(),
     listImageCardScenes: vi.fn(),
     getImageCardQuota: vi.fn(),
+    listProfiles: vi.fn(),
     createProfile: vi.fn(),
+    updateProfile: vi.fn(),
     drawImageCard: vi.fn(),
     createOrder: vi.fn(),
     payMock: vi.fn(),
@@ -35,6 +37,7 @@ describe('ImageCardPage', () => {
   })
 
   it('boots scenes and draws a card', async () => {
+    api.listProfiles.mockResolvedValue({ items: [] })
     api.createProfile.mockResolvedValue({ id: 'p1' })
     api.drawImageCard.mockResolvedValue({
       scene: '情绪整理',