feat: add api foundation and booking schema

apps/api/src/main.ts

@@ -1,3 +1,35 @@
-export function healthMessage(): string {
-  return "personal-brand-api";
+import "reflect-metadata";
+import { Controller, Get, Injectable, Module } from "@nestjs/common";
+import { NestFactory } from "@nestjs/core";
+import { FastifyAdapter } from "@nestjs/platform-fastify";
+import type { NestFastifyApplication } from "@nestjs/platform-fastify";
+import { PrismaClient } from "@prisma/client";
+
+@Injectable()
+export class PrismaService extends PrismaClient {
+  async onModuleDestroy(): Promise<void> {
+    await this.$disconnect();
+  }
+}
+
+@Controller("health")
+export class HealthController {
+  @Get()
+  check(): { status: string; service: string } {
+    return { status: "ok", service: "personal-brand-api" };
+  }
+}
+
+@Module({ controllers: [HealthController], providers: [PrismaService], exports: [PrismaService] })
+export class AppModule {}
+
+export async function createApp(): Promise<NestFastifyApplication> {
+  const app = await NestFactory.create<NestFastifyApplication>(AppModule, new FastifyAdapter());
+  app.enableCors();
+  return app;
+}
+
+if (process.env.NODE_ENV !== "test") {
+  const app = await createApp();
+  await app.listen({ port: Number(process.env.API_PORT ?? 3001), host: "0.0.0.0" });
 }