feat: 系统配置页动态渲染 + AI 配置完善

- 配置页重写：从 API 动态加载配置项，不再依赖硬编码字段列表
- AI 配置扩展：新增 provider API Key/URL、配额、Token 等 11 项配置
- 站点配置扩展：联系电话、公司名称
- 支持新增自定义配置项（+ 新增配置按钮）
- 配置项显示已有 DB 数据 + 预定义字段的合并列表

backend/src/modules/admin/settings.controller.ts

@@ -13,23 +13,12 @@ export class SettingsController {
 
   @Get('roles')
   async roles() {
-    return {
-      items: await this.prisma.adminRole.findMany({
-        where: { status: 'ACTIVE' },
-        orderBy: { createdAt: 'desc' },
-      }),
-    };
+    return { items: await this.prisma.adminRole.findMany({ where: { status: 'ACTIVE' }, orderBy: { createdAt: 'desc' } }) };
   }
 
   @Post('roles')
   async createRole(@Body() body: { name: string; description?: string; permissions?: string[] }) {
-    return this.prisma.adminRole.create({
-      data: {
-        name: body.name,
-        description: body.description || '',
-        permissions: body.permissions || [],
-      },
-    });
+    return this.prisma.adminRole.create({ data: { name: body.name, description: body.description || '', permissions: body.permissions || [] } });
   }
 
   @Put('roles/:id')
@@ -48,27 +37,14 @@ export class SettingsController {
 
   @Get('admins')
   async admins() {
-    return {
-      items: await this.prisma.adminUser.findMany({
-        where: { status: 'ACTIVE' },
-        include: { role: true },
-        orderBy: { createdAt: 'desc' },
-      }),
-    };
+    return { items: await this.prisma.adminUser.findMany({ where: { status: 'ACTIVE' }, include: { role: true }, orderBy: { createdAt: 'desc' } }) };
   }
 
   @Post('admins')
   async createAdmin(@Body() body: { username: string; password: string; nickname?: string; roleId?: string }) {
     const bcrypt = require('bcryptjs');
     const passwordHash = await bcrypt.hash(body.password, 10);
-    return this.prisma.adminUser.create({
-      data: {
-        username: body.username,
-        passwordHash,
-        nickname: body.nickname || '',
-        roleId: body.roleId || null,
-      },
-    });
+    return this.prisma.adminUser.create({ data: { username: body.username, passwordHash, nickname: body.nickname || '', roleId: body.roleId || null } });
   }
 
   @Put('admins/:id')
@@ -89,22 +65,15 @@ export class SettingsController {
   permissions() {
     return {
       items: [
-        { key: 'dashboard', name: '仪表盘', category: '首页' },
-        { key: 'users', name: '用户管理', category: '用户' },
-        { key: 'courses', name: '课程管理', category: '内容' },
-        { key: 'prompts', name: '提示词管理', category: '内容' },
-        { key: 'contents', name: '内容管理', category: '内容' },
-        { key: 'tools', name: '工具管理', category: '内容' },
-        { key: 'orders', name: '订单管理', category: '交易' },
-        { key: 'enterprise', name: '企业版管理', category: '交易' },
-        { key: 'comments', name: '评论审核', category: '社区' },
-        { key: 'analytics', name: '数据分析', category: '统计' },
-        { key: 'roles', name: '角色权限', category: '设置' },
-        { key: 'admins', name: '管理员', category: '设置' },
-        { key: 'config', name: '系统配置', category: '设置' },
-        { key: 'banners', name: 'Banner管理', category: '运营' },
+        { key: 'dashboard', name: '仪表盘', category: '首页' }, { key: 'users', name: '用户管理', category: '用户' },
+        { key: 'courses', name: '课程管理', category: '内容' }, { key: 'prompts', name: '提示词管理', category: '内容' },
+        { key: 'contents', name: '内容管理', category: '内容' }, { key: 'tools', name: '工具管理', category: '内容' },
+        { key: 'orders', name: '订单管理', category: '交易' }, { key: 'enterprise', name: '企业版管理', category: '交易' },
+        { key: 'comments', name: '评论审核', category: '社区' }, { key: 'analytics', name: '数据分析', category: '统计' },
+        { key: 'roles', name: '角色权限', category: '设置' }, { key: 'admins', name: '管理员', category: '设置' },
+        { key: 'config', name: '系统配置', category: '设置' }, { key: 'banners', name: 'Banner管理', category: '运营' },
         { key: 'notifications', name: '推送管理', category: '运营' },
       ],
     };
   }
-}
+}