chore: update gitignore for phase02

apps/api/src/plugins/db.ts

@@ -0,0 +1,21 @@
+import fp from 'fastify-plugin';
+import type { FastifyInstance } from 'fastify';
+import { createDb, type Database } from '@source/database';
+
+declare module 'fastify' {
+  interface FastifyInstance {
+    db: Database;
+  }
+}
+
+export default fp(async (app: FastifyInstance) => {
+  const databaseUrl = process.env.DATABASE_URL;
+  if (!databaseUrl) {
+    throw new Error('DATABASE_URL environment variable is required');
+  }
+
+  const db = createDb(databaseUrl);
+  app.decorate('db', db);
+
+  app.log.info('Database connected');
+});