feat: Complete NestJS backend scaffold — 22 modules, 39 entities, WebSocket gateway

Full backend rewrite from Rust/Axum to NestJS/TypeScript.
- 22 feature modules (auth, servers, wipes, maps, plugins, players, console,
  chat, team, notifications, settings, schedules, analytics, alerts, status,
  store, webstore, admin, setup, migration, users, licenses)
- 39 TypeORM entities matching PostgreSQL schema (12 migrations)
- Common infrastructure: JWT/RBAC guards, decorators, exception filter
- NATS service with pub/sub/request-reply
- Socket.IO WebSocket gateway with NATS bridge
- Docker: NestJS Dockerfile + updated docker-compose.yml
- Zero compile errors (npx tsc --noEmit clean)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-nest/src/modules/servers/servers.service.ts

@@ -0,0 +1,88 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { ServerConnection } from '../../entities/server-connection.entity';
+import { ServerConfig } from '../../entities/server-config.entity';
+import { NatsService } from '../../services/nats.service';
+import { UpdateServerConfigDto } from './dto/update-config.dto';
+
+@Injectable()
+export class ServersService {
+  constructor(
+    @InjectRepository(ServerConnection)
+    private readonly connectionRepo: Repository<ServerConnection>,
+    @InjectRepository(ServerConfig)
+    private readonly configRepo: Repository<ServerConfig>,
+    private readonly natsService: NatsService,
+  ) {}
+
+  /**
+   * Get server connection and config for a license
+   */
+  async getServer(licenseId: string) {
+    const connection = await this.connectionRepo.findOne({
+      where: { license_id: licenseId },
+    });
+
+    const config = await this.configRepo.findOne({
+      where: { license_id: licenseId },
+    });
+
+    if (!connection || !config) {
+      throw new NotFoundException('Server not found for this license');
+    }
+
+    return { connection, config };
+  }
+
+  /**
+   * Update server configuration
+   */
+  async updateConfig(licenseId: string, dto: UpdateServerConfigDto) {
+    const config = await this.configRepo.findOne({
+      where: { license_id: licenseId },
+    });
+
+    if (!config) {
+      throw new NotFoundException('Server config not found');
+    }
+
+    // Apply updates
+    Object.assign(config, dto);
+    config.updated_at = new Date();
+
+    return await this.configRepo.save(config);
+  }
+
+  /**
+   * Send a console command to the server via NATS
+   */
+  async sendCommand(licenseId: string, command: string) {
+    await this.natsService.sendServerCommand(licenseId, 'command', { command });
+    return { output: 'Command sent' };
+  }
+
+  /**
+   * Start the server via NATS
+   */
+  async startServer(licenseId: string) {
+    await this.natsService.sendServerCommand(licenseId, 'start');
+    return { message: 'Start command sent' };
+  }
+
+  /**
+   * Stop the server via NATS
+   */
+  async stopServer(licenseId: string) {
+    await this.natsService.sendServerCommand(licenseId, 'stop');
+    return { message: 'Stop command sent' };
+  }
+
+  /**
+   * Restart the server via NATS
+   */
+  async restartServer(licenseId: string) {
+    await this.natsService.sendServerCommand(licenseId, 'restart');
+    return { message: 'Restart command sent' };
+  }
+}