chore: add initial migration and seed script

Made-with: Cursor

src/db/seed.ts

@@ -0,0 +1,47 @@
+import 'dotenv/config';
+import { drizzle } from 'drizzle-orm/node-postgres';
+import { eq } from 'drizzle-orm';
+import pg from 'pg';
+import argon2 from 'argon2';
+import { env } from '../config/env.js';
+import { users } from './schema/index.js';
+
+const { Pool } = pg;
+
+const TEST_USER = {
+  email: 'test@example.com',
+  password: 'TestPassword123!',
+  nickname: 'TestUser',
+};
+
+async function runSeed() {
+  const pool = new Pool({ connectionString: env.DATABASE_URL });
+  const db = drizzle(pool);
+
+  if (env.NODE_ENV !== 'development') {
+    await pool.end();
+    return;
+  }
+
+  const existing = await db.select().from(users).where(eq(users.email, TEST_USER.email)).limit(1);
+  if (existing.length > 0) {
+    await pool.end();
+    return;
+  }
+
+  const passwordHash = await argon2.hash(TEST_USER.password);
+  await db.insert(users).values({
+    email: TEST_USER.email,
+    passwordHash,
+    nickname: TEST_USER.nickname,
+    role: 'free',
+    emailVerifiedAt: new Date(),
+  });
+
+  await pool.end();
+}
+
+runSeed().catch((err) => {
+  console.error('Seed failed:', err);
+  process.exit(1);
+});