feat(ECR-006): 落地运营后台 Phase A（admin API + admin-h5）

新增独立鉴权的 /api/v1/admin 与 Vue 控制台；会员授予与审计同事务，并补集成/单测。

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

apps/admin-h5/src/stores/auth.ts

@@ -0,0 +1,41 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import { adminApi, getToken, setToken } from '@/api/client'
+
+export const useAuthStore = defineStore('auth', () => {
+  const token = ref<string | null>(getToken())
+  const username = ref<string>('')
+
+  async function login(user: string, password: string) {
+    const res = await adminApi.login(user, password)
+    setToken(res.token)
+    token.value = res.token
+    username.value = res.admin.username
+  }
+
+  async function hydrate() {
+    if (!token.value) return false
+    try {
+      const me = await adminApi.me()
+      username.value = me.username
+      return true
+    } catch {
+      setToken(null)
+      token.value = null
+      return false
+    }
+  }
+
+  async function logout() {
+    try {
+      await adminApi.logout()
+    } catch {
+      /* ignore */
+    }
+    setToken(null)
+    token.value = null
+    username.value = ''
+  }
+
+  return { token, username, login, logout, hydrate }
+})