Add missing index on kind-pubkey-created_at

src/db/migrations/011_kind_author_index.ts

@@ -0,0 +1,16 @@
+import { Kysely } from '@/deps.ts';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .createIndex('idx_events_kind_pubkey_created_at')
+    .on('events')
+    .columns(['kind', 'pubkey', 'created_at'])
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .dropIndex('idx_events_kind_pubkey_created_at')
+    .on('events')
+    .execute();
+}