feat: use pgvecto.rs (#3605)

server/src/infra/entities/smart-search.entity.ts

@@ -0,0 +1,20 @@
+import { Column, Entity, Index, JoinColumn, OneToOne, PrimaryColumn } from 'typeorm';
+import { AssetEntity } from './asset.entity';
+
+@Entity('smart_search', { synchronize: false })
+export class SmartSearchEntity {
+  @OneToOne(() => AssetEntity, { onDelete: 'CASCADE', nullable: true })
+  @JoinColumn({ name: 'assetId', referencedColumnName: 'id' })
+  asset?: AssetEntity;
+
+  @PrimaryColumn()
+  assetId!: string;
+
+  @Index('clip_index', { synchronize: false })
+  @Column({
+    type: 'float4',
+    array: true,
+    select: false,
+  })
+  embedding!: number[];
+}