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/composables/useProfilePage.ts

@@ -1,6 +1,7 @@
 import { computed, onMounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import type { Profile } from '@yuxingu/types'
+import { api } from '../api/client'
 import { ensureAccount } from '../lib/authSession'
 import {
   avatarInitial,
@@ -16,6 +17,7 @@ export function useProfilePage() {
   const route = useRoute()
   const router = useRouter()
 
+  const accountNickname = ref('')
   const items = ref<Profile[]>([])
   const loading = ref(true)
   const error = ref('')
@@ -102,13 +104,25 @@ export function useProfilePage() {
     () => applyQueryFlags(),
   )
 
+  function onNicknameUpdated(n: string) {
+    accountNickname.value = n
+  }
+
   onMounted(async () => {
     if (!(await ensureAccount(router, route.fullPath))) return
+    try {
+      const me = await api.authMe()
+      accountNickname.value = me.nickname || ''
+    } catch {
+      accountNickname.value = ''
+    }
     await load()
     applyQueryFlags()
   })
 
   return {
+    accountNickname,
+    onNicknameUpdated,
     items,
     loading,
     error,