feat: P3阶段完成 - 全部模块迁移完成 🎉

## P3.1: 争议仲裁模块（disputes）✅
- API: disputes.ts
- 模块导出

## P3.2: 卖家中心模块（seller）✅
- Views: 4个页面
- Composables: usePublishForm, usePublishDraft
- 模块导出

## P3.3: 管理后台模块（admin）✅
- API: 8个文件（adminAuth, adminDashboard, adminUsers等）
- Views: 15个管理页面
- Composables: useAdminTable, useAdminPaginatedTable
- Components: 管理端组件
- 模块导出

---

## 🎉 Features 架构迁移全部完成！

### 最终统计
- ✅ P0: shared（基础设施）- 22个文件
- ✅ P1: wallet, chats, orders - 24个文件
- ✅ P2: listings, auth - 35个文件
- ✅ P3: seller, disputes, admin - 47个文件

**总计：** 9个模块，128个文件完成迁移

### 新架构
```
frontend/src/
├── features/          # 9个业务模块 ✅
│   ├── wallet/       ✅
│   ├── chats/        ✅
│   ├── orders/       ✅ (已重构)
│   ├── listings/     ✅
│   ├── auth/         ✅
│   ├── seller/       ✅
│   ├── disputes/     ✅
│   └── admin/        ✅
└── shared/           ✅
```

下一步：清理旧文件、更新路由配置

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/features/admin/views/AdminMgrUsersView.vue

@@ -0,0 +1,205 @@
+<script setup lang="ts">
+import { ElMessage, ElMessageBox } from 'element-plus'
+import { ref } from 'vue'
+
+import { fetchAdminMgrUsers, deleteAdminMgrUser, changeAdminPassword, type AdminMgrUser } from '@/api/adminMgr'
+import { useAdminPaginatedTable } from '@/composables/useAdminPaginatedTable'
+import { formatDateTime } from '@/utils/time'
+
+import AdminUserDialog from './components/AdminUserDialog.vue'
+import AssignRolesDialog from './components/AssignRolesDialog.vue'
+
+const showDialog = ref(false)
+const editingAdmin = ref<AdminMgrUser | null>(null)
+const showRolesDialog = ref(false)
+const rolesAdmin = ref<AdminMgrUser | null>(null)
+const showPasswordDialog = ref(false)
+const passwordAdmin = ref<AdminMgrUser | null>(null)
+const passwordForm = ref({ old_password: '', new_password: '' })
+const passwordSubmitting = ref(false)
+
+const { loading, data: admins, total, currentPage, currentPageSize, load: loadAdmins, handleSizeChange } = useAdminPaginatedTable<AdminMgrUser>({
+  fetchFn: fetchAdminMgrUsers,
+})
+
+function openCreate() {
+  editingAdmin.value = null
+  showDialog.value = true
+}
+
+function openEdit(row: AdminMgrUser) {
+  editingAdmin.value = row
+  showDialog.value = true
+}
+
+function openRoles(row: AdminMgrUser) {
+  rolesAdmin.value = row
+  showRolesDialog.value = true
+}
+
+function openPassword(row: AdminMgrUser) {
+  passwordAdmin.value = row
+  passwordForm.value = { old_password: '', new_password: '' }
+  showPasswordDialog.value = true
+}
+
+async function handleDelete(row: AdminMgrUser) {
+  try {
+    await ElMessageBox.confirm(`确定要删除管理员「${row.username}」吗？此操作不可撤销。`, '删除确认', {
+      confirmButtonText: '确认删除',
+      cancelButtonText: '取消',
+      type: 'warning',
+    })
+    await deleteAdminMgrUser(row.id)
+    ElMessage.success('管理员已删除')
+    await loadAdmins()
+  } catch {
+    // 用户取消
+  }
+}
+
+async function handleChangePassword() {
+  if (!passwordAdmin.value) return
+  if (!passwordForm.value.old_password || !passwordForm.value.new_password) {
+    ElMessage.warning('请填写完整')
+    return
+  }
+  passwordSubmitting.value = true
+  try {
+    await changeAdminPassword(passwordAdmin.value.id, passwordForm.value)
+    ElMessage.success('密码已修改')
+    showPasswordDialog.value = false
+  } catch (error) {
+    ElMessage.error(readError(error, '修改失败'))
+  } finally {
+    passwordSubmitting.value = false
+  }
+}
+
+function readError(error: unknown, fallback: string) {
+  if (typeof error === 'object' && error && 'response' in error) {
+    const response = (error as { response?: { data?: { message?: string } } }).response
+    return response?.data?.message || fallback
+  }
+  return fallback
+}
+
+const statusLabel: Record<string, string> = {
+  active: '启用',
+  disabled: '禁用',
+}
+</script>
+
+<template>
+  <section class="page">
+    <div class="page-header-row">
+      <div class="page-header">
+        <p class="eyebrow">Admin Users</p>
+        <h1>管理员管理</h1>
+        <p>管理后台管理员账号，分配角色和权限。</p>
+      </div>
+      <div class="toolbar-actions">
+        <el-button @click="loadAdmins">刷新</el-button>
+        <el-button type="primary" @click="openCreate">新建管理员</el-button>
+      </div>
+    </div>
+
+    <el-table v-loading="loading" class="table-panel" :data="admins">
+      <el-table-column prop="id" label="ID" width="70" />
+      <el-table-column prop="username" label="用户名" min-width="120" />
+      <el-table-column prop="nickname" label="昵称" min-width="120" />
+      <el-table-column label="角色" min-width="200">
+        <template #default="{ row }">
+          <el-tag
+            v-for="role in row.roles"
+            :key="role.id"
+            size="small"
+            style="margin-right: 4px; margin-bottom: 2px"
+          >
+            {{ role.name }}
+          </el-tag>
+          <span v-if="!row.roles?.length" style="color: #8f9bba">未分配</span>
+        </template>
+      </el-table-column>
+      <el-table-column label="状态" width="90">
+        <template #default="{ row }">
+          <el-tag :type="row.status === 'active' ? 'success' : 'danger'" size="small">
+            {{ statusLabel[row.status] || row.status }}
+          </el-tag>
+        </template>
+      </el-table-column>
+      <el-table-column label="最后登录" min-width="170">
+        <template #default="{ row }">{{ row.last_login_at ? formatDateTime(row.last_login_at) : '-' }}</template>
+      </el-table-column>
+      <el-table-column label="操作" width="300" fixed="right">
+        <template #default="{ row }">
+          <el-button size="small" @click="openEdit(row)">编辑</el-button>
+          <el-button size="small" type="primary" @click="openRoles(row)">角色</el-button>
+          <el-button size="small" @click="openPassword(row)">密码</el-button>
+          <el-button size="small" type="danger" @click="handleDelete(row)">删除</el-button>
+        </template>
+      </el-table-column>
+    </el-table>
+
+    <div class="pagination-wrap" v-if="total > 0">
+      <el-pagination
+        v-model:current-page="currentPage"
+        v-model:page-size="currentPageSize"
+        :total="total"
+        :page-sizes="[10, 20, 50, 100]"
+        layout="total, sizes, prev, pager, next"
+        @current-change="loadAdmins"
+        @size-change="handleSizeChange"
+      />
+    </div>
+
+    <!-- 新建/编辑对话框 -->
+    <AdminUserDialog
+      v-model="showDialog"
+      :admin="editingAdmin"
+      @saved="loadAdmins"
+    />
+
+    <!-- 角色分配对话框 -->
+    <AssignRolesDialog
+      v-model="showRolesDialog"
+      :admin="rolesAdmin"
+      @saved="loadAdmins"
+    />
+
+    <!-- 修改密码对话框 -->
+    <el-dialog
+      :model-value="showPasswordDialog"
+      :title="`修改密码 - ${passwordAdmin?.username || ''}`"
+      width="460px"
+      @update:model-value="showPasswordDialog = $event"
+    >
+      <div class="dialog-body">
+        <el-form-item label="原密码" class="full-control">
+          <el-input v-model="passwordForm.old_password" type="password" show-password placeholder="请输入原密码" />
+        </el-form-item>
+        <el-form-item label="新密码" class="full-control">
+          <el-input v-model="passwordForm.new_password" type="password" show-password placeholder="请输入新密码（至少6位）" />
+        </el-form-item>
+      </div>
+      <template #footer>
+        <el-button @click="showPasswordDialog = false">取消</el-button>
+        <el-button type="primary" :loading="passwordSubmitting" @click="handleChangePassword">确认修改</el-button>
+      </template>
+    </el-dialog>
+  </section>
+</template>
+
+<style scoped>
+.toolbar-actions {
+  display: flex;
+  gap: 8px;
+}
+.dialog-body {
+  display: grid;
+  gap: 16px;
+}
+.full-control {
+  width: 100%;
+}
+</style>