feat: add health check endpoint

apps/backend/src/modules/health/health.controller.ts

@@ -0,0 +1,16 @@
+import { Controller, Get } from '@nestjs/common';
+import { ApiTags, ApiOperation } from '@nestjs/swagger';
+
+@ApiTags('Health')
+@Controller('health')
+export class HealthController {
+  @Get()
+  @ApiOperation({ summary: 'Проверка состояния сервиса' })
+  check() {
+    return {
+      status: 'ok',
+      timestamp: new Date().toISOString(),
+      uptime: process.uptime(),
+    };
+  }
+}

apps/backend/src/modules/health/health.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { HealthController } from './health.controller';
+
+@Module({
+  controllers: [HealthController],
+})
+export class HealthModule {}