feat: use pgvecto.rs (#3605)

server/src/infra/database.config.ts

@@ -25,3 +25,10 @@ export const databaseConfig: PostgresConnectionOptions = {
 
 // this export is used by TypeORM commands in package.json#scripts
 export const dataSource = new DataSource(databaseConfig);
+
+export async function enablePrefilter() {
+  if (!dataSource.isInitialized) {
+    await dataSource.initialize();
+  }
+  await dataSource.query(`SET vectors.enable_prefilter = on`);
+}