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/pages/LoginPage.vue

@@ -0,0 +1,56 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { useAuthStore } from '@/stores/auth'
+
+const auth = useAuthStore()
+const router = useRouter()
+const route = useRoute()
+const username = ref('admin')
+const password = ref('')
+const error = ref('')
+const loading = ref(false)
+
+async function onSubmit() {
+  error.value = ''
+  loading.value = true
+  try {
+    await auth.login(username.value.trim(), password.value)
+    const redirect = typeof route.query.redirect === 'string' ? route.query.redirect : '/'
+    await router.replace(redirect)
+  } catch (e) {
+    error.value = e instanceof Error ? e.message : '登录失败'
+  } finally {
+    loading.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="wrap">
+    <form class="card login" @submit.prevent="onSubmit">
+      <h1>运营后台</h1>
+      <p class="muted">愈心谷内部工具 · Phase A</p>
+      <label class="field">
+        <span>用户名</span>
+        <input v-model="username" autocomplete="username" required />
+      </label>
+      <label class="field">
+        <span>密码</span>
+        <input v-model="password" type="password" autocomplete="current-password" required />
+      </label>
+      <p v-if="error" class="err">{{ error }}</p>
+      <button class="btn" type="submit" :disabled="loading">
+        {{ loading ? '登录中…' : '登录' }}
+      </button>
+    </form>
+  </div>
+</template>
+
+<style scoped>
+.wrap { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
+.login { width: min(380px, 100%); }
+h1 { margin: 0 0 0.25rem; font-size: 1.45rem; }
+.muted { margin: 0 0 1.2rem; }
+.btn { width: 100%; }
+</style>