feat: use pgvecto.rs (#3605)

server/src/infra/migrations/1700713994428-AddCLIPEmbeddingIndex.ts

@@ -0,0 +1,19 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddCLIPEmbeddingIndex1700713994428 implements MigrationInterface {
+  name = 'AddCLIPEmbeddingIndex1700713994428';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE INDEX IF NOT EXISTS clip_index ON smart_search
+      USING vectors (embedding cosine_ops) WITH (options = $$
+      [indexing.hnsw]
+      m = 16
+      ef_construction = 300
+      $$);`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP INDEX IF EXISTS clip_index`);
+  }
+}