feat: complete admin backend controllers and services

- AdminPlansController & Service (CRUD, reorder)
- AdminPaymentMethodsController & Service (CRUD, reorder)
- AdminPaymentsController & Service (verify, reject, pending count)
- AdminUsersController & Service (search, suspend, grant pro access, stats)
- AdminConfigController & Service (dynamic config management)
- Wire all controllers into AdminModule
- Import AdminModule in AppModule

Admin API Routes:
- GET/POST/PUT/DELETE /admin/plans
- GET/POST/PUT/DELETE /admin/payment-methods
- GET /admin/payments (with status filter)
- POST /admin/payments/:id/verify
- POST /admin/payments/:id/reject
- GET /admin/users (with search)
- POST /admin/users/:id/grant-pro
- GET/POST/DELETE /admin/config

All routes protected by AuthGuard + AdminGuard

apps/api/dist/admin/admin.module.js

@@ -1,3 +1,54 @@
 "use strict";
+var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+};
 Object.defineProperty(exports, "__esModule", { value: true });
+exports.AdminModule = void 0;
+const common_1 = require("@nestjs/common");
+const prisma_module_1 = require("../prisma/prisma.module");
+const admin_guard_1 = require("./guards/admin.guard");
+const admin_plans_controller_1 = require("./admin-plans.controller");
+const admin_payment_methods_controller_1 = require("./admin-payment-methods.controller");
+const admin_payments_controller_1 = require("./admin-payments.controller");
+const admin_users_controller_1 = require("./admin-users.controller");
+const admin_config_controller_1 = require("./admin-config.controller");
+const admin_plans_service_1 = require("./admin-plans.service");
+const admin_payment_methods_service_1 = require("./admin-payment-methods.service");
+const admin_payments_service_1 = require("./admin-payments.service");
+const admin_users_service_1 = require("./admin-users.service");
+const admin_config_service_1 = require("./admin-config.service");
+let AdminModule = class AdminModule {
+};
+exports.AdminModule = AdminModule;
+exports.AdminModule = AdminModule = __decorate([
+    (0, common_1.Module)({
+        imports: [prisma_module_1.PrismaModule],
+        controllers: [
+            admin_plans_controller_1.AdminPlansController,
+            admin_payment_methods_controller_1.AdminPaymentMethodsController,
+            admin_payments_controller_1.AdminPaymentsController,
+            admin_users_controller_1.AdminUsersController,
+            admin_config_controller_1.AdminConfigController,
+        ],
+        providers: [
+            admin_guard_1.AdminGuard,
+            admin_plans_service_1.AdminPlansService,
+            admin_payment_methods_service_1.AdminPaymentMethodsService,
+            admin_payments_service_1.AdminPaymentsService,
+            admin_users_service_1.AdminUsersService,
+            admin_config_service_1.AdminConfigService,
+        ],
+        exports: [
+            admin_guard_1.AdminGuard,
+            admin_plans_service_1.AdminPlansService,
+            admin_payment_methods_service_1.AdminPaymentMethodsService,
+            admin_payments_service_1.AdminPaymentsService,
+            admin_users_service_1.AdminUsersService,
+            admin_config_service_1.AdminConfigService,
+        ],
+    })
+], AdminModule);
 //# sourceMappingURL=admin.module.js.map