Initial commit: Full project structure

- Backend: NestJS with Docker
- Frontend: Next.js with Docker
- Nginx configuration for reverse proxy
- PostgreSQL setup
- Docker compose for orchestration
- Development environment configuration

backend/src/app.controller.ts

@@ -0,0 +1,25 @@
+// backend/src/app.controller.ts
+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getRoot() {
+    return {
+      message: 'DyoLink API',
+      version: '1.0',
+      endpoints: {
+        auth: '/api/auth',
+        docs: '/api/docs',
+      },
+    };
+  }
+
+  @Get('hello') // This will be at /api/hello
+  getHello(): string {
+    return this.appService.getHello();
+  }
+}