feat(mini-user): add configurable home banner and footer

HQ system settings WeChat mini config with OSS swiper/footer uploads; client-config exposes miniHome.

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

server/dukang-api/src/modules/common/client-config.controller.ts

@@ -1,4 +1,5 @@
 import { Controller, Get } from '@nestjs/common';
+import { parseMiniHomeBanners } from '@dukang/shared-types';
 import { SystemConfigService } from '../../common/system-config/system-config.service';
 
 @Controller('common')
@@ -8,12 +9,18 @@ export class ClientConfigController {
   @Get('client-config')
   clientConfig() {
     const cfg = this.systemConfig.getAppConfig();
+    const env = this.systemConfig.getMergedEnv();
+    const footer = (env.MINI_HOME_FOOTER_URL ?? '').trim();
     return {
       mockPay: cfg.mockPay,
       wechatPayEnabled: cfg.wechatPayEnabled,
       mockSms: cfg.mockSms,
       mockWechat: cfg.mockWechat,
       wxAuthorize: cfg.wxAuthorize,
+      miniHome: {
+        banners: parseMiniHomeBanners(env.MINI_HOME_BANNERS),
+        footerUrl: footer || null,
+      },
     };
   }
 }