Add auto-migration on server startup

Run Drizzle migrations before seeding admin user so tables exist
on fresh database. Migration files generated from current schema.

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

apps/server/src/db/index.ts

@@ -1,4 +1,7 @@
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import { drizzle } from 'drizzle-orm/postgres-js';
+import { migrate } from 'drizzle-orm/postgres-js/migrator';
 import postgres from 'postgres';
 import * as schema from './schema';
 
@@ -8,3 +11,13 @@ const client = postgres(connectionString);
 export const db = drizzle(client, { schema });
 
 export type Database = typeof db;
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+export async function runMigrations() {
+  const migrationClient = postgres(connectionString, { max: 1 });
+  const migrationDb = drizzle(migrationClient);
+  await migrate(migrationDb, { migrationsFolder: path.resolve(__dirname, '../../drizzle') });
+  await migrationClient.end();
+  console.log('Database migrations complete');
+}

apps/server/src/index.ts

@@ -6,6 +6,7 @@ import { auth } from './routes/auth';
 import { savesRouter } from './routes/saves';
 import { leaderboardRouter } from './routes/leaderboard';
 import { invitesRouter } from './routes/invites';
+import { runMigrations } from './db';
 import { seedAdmin } from './db/seed';
 
 if (!process.env.JWT_SECRET) {
@@ -40,6 +41,7 @@ const port = Number(process.env.PORT) || 3001;
 
 console.log(`AI Tycoon API server starting on port ${port}...`);
 
+await runMigrations();
 await seedAdmin();
 
 serve({ fetch: app.fetch, port });