H-263 restore PostgreSQL E2E coverage (#41)

Co-authored-by: Rogee <rogee@ipao.vip>

backend/tests/helpers/pg_helper.go

@@ -44,6 +44,9 @@ func SetupTestDB(t *testing.T) *gorm.DB {
 
 	if UsePostgres() {
 		db := setupPostgresDB(t)
+		if err := db.Exec("CREATE EXTENSION IF NOT EXISTS vector").Error; err != nil {
+			t.Fatalf("failed to enable pgvector: %v", err)
+		}
 		autoMigrateAll(t, db)
 		return db
 	}
@@ -71,8 +74,8 @@ func setupPostgresDB(t *testing.T) *gorm.DB {
 
 	dsn := testDSN()
 	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{
-		Logger:                 logger.Default.LogMode(logger.Silent),
-		PrepareStmt:            true,
+		Logger:                                   logger.Default.LogMode(logger.Silent),
+		PrepareStmt:                              true,
 		DisableForeignKeyConstraintWhenMigrating: true,
 	})
 	if err != nil {
@@ -107,8 +110,8 @@ func setupPostgresIsolatedDB(t *testing.T) *gorm.DB {
 
 	dsn := testDSN()
 	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{
-		Logger:                 logger.Default.LogMode(logger.Silent),
-		PrepareStmt:            true,
+		Logger:                                   logger.Default.LogMode(logger.Silent),
+		PrepareStmt:                              true,
 		DisableForeignKeyConstraintWhenMigrating: true,
 	})
 	if err != nil {
@@ -257,4 +260,4 @@ func sanitizeSchemaName(name string) string {
 		result = result[:63]
 	}
 	return string(result)
-}
+}