refactor(backend): simplify media schema and recording metadata

Backend/scripts/migrate.ts

@@ -0,0 +1,18 @@
+import 'dotenv/config';
+import { migrate } from 'drizzle-orm/node-postgres/migrator';
+
+import { db, pool } from '../db/client';
+
+const run = async (): Promise<void> => {
+  await migrate(db, { migrationsFolder: './drizzle' });
+  await pool.end();
+  console.log('Database migrations applied.');
+};
+
+run()
+  .then(() => process.exit(0))
+  .catch(async (error) => {
+    console.error('Failed to apply database migrations', error);
+    await pool.end().catch(() => undefined);
+    process.exit(1);
+  });