H-263 restore PostgreSQL E2E coverage (#41)

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

backend/tests/e2e/middleware_e2e_test.go

@@ -24,16 +24,13 @@ import (
 // Reference: Chatwoot's rack-cors configuration and middleware integration specs.
 type MiddlewareE2ETestSuite struct {
 	suite.Suite
-	server   *httptest.Server
-	router   *gin.Engine
-	jwtCfg   *config.JWTConfig
+	server *httptest.Server
+	router *gin.Engine
+	jwtCfg *config.JWTConfig
 }
 
 // SetupSuite builds a minimal Gin router with CORS + Auth middleware and a health endpoint.
 func (s *MiddlewareE2ETestSuite) SetupSuite() {
-	// E2E tests require PostgreSQL; skip in SQLite test mode.
-	s.T().Skip("E2E tests require PostgreSQL; skipping in SQLite test mode")
-
 	s.jwtCfg = &config.JWTConfig{
 		Secret:             "middleware-e2e-test-secret",
 		ExpiryHours:        1,
@@ -72,7 +69,7 @@ func (s *MiddlewareE2ETestSuite) SetupSuite() {
 			c.JSON(200, gin.H{
 				"user_id":    userID,
 				"account_id": accountID,
-				"role":        role,
+				"role":       role,
 			})
 		})
 	}
@@ -544,4 +541,4 @@ func (s *MiddlewareE2ETestSuite) TestCORSAndAuth_DisallowedOriginBlocksEvenWithV
 
 func TestMiddlewareE2ESuite(t *testing.T) {
 	suite.Run(t, new(MiddlewareE2ETestSuite))
-}
+}