fix(migration): catch already-exists errors when schema pre-initialized via drizzle push

src/main.ts

@@ -28,8 +28,17 @@ function validateEnv(): void {
 async function bootstrap() {
   validateEnv();
 
-  // Apply pending DB migrations before accepting traffic
-  await migrate(db, { migrationsFolder: './drizzle' });
+  // Apply pending DB migrations — skip if schema was pre-initialized via drizzle push
+  try {
+    await migrate(db, { migrationsFolder: './drizzle' });
+  } catch (err) {
+    const msg = (err as Error & { message: string }).message ?? '';
+    if (msg.includes('already exists')) {
+      console.warn('[bootstrap] Schema already initialized — migration skipped. Run db:migrate manually if needed.');
+    } else {
+      throw err;
+    }
+  }
 
   const app = await NestFactory.create(AppModule, { bufferLogs: true });
   app.useLogger(app.get(Logger));