H-263 restore PostgreSQL E2E coverage (#41)

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

backend/internal/middleware/auth.go

@@ -7,7 +7,6 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
-	"github.com/golang-jwt/jwt/v5"
 
 	"github.com/gochat/gochat/internal/auth"
 	"github.com/gochat/gochat/internal/config"
@@ -119,14 +118,12 @@ func AuthMiddlewareWithServiceAndDB(jwtSvc *auth.JWTService, db *gorm.DB) gin.Ha
 // DEPRECATED: Prefer JWTService.GenerateTokenPair which produces proper typed Claims.
 // Kept for backward compatibility with existing test helpers.
 func GenerateToken(cfg *config.JWTConfig, userID uint, accountID uint, role string) (string, error) {
-	claims := jwt.MapClaims{
-		"user_id":    userID,
-		"account_id": accountID,
-		"role":       role,
-		"exp":        time.Now().Add(cfg.ExpiryDuration()).Unix(),
-		"iat":        time.Now().Unix(),
+	pair, err := auth.NewJWTService(cfg).GenerateTokenPair(&model.User{
+		Base:     model.Base{ID: userID},
+		Provider: "email",
+	}, accountID, role)
+	if err != nil {
+		return "", err
 	}
-
-	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
-	return token.SignedString([]byte(cfg.Secret))
+	return pair.AccessToken, nil
 }

backend/internal/middleware/csrf.go

@@ -199,6 +199,14 @@ func setCSRFTokenCookie(c *gin.Context, token string, cfg CSRFConfig) {
 	if maxAge <= 0 {
 		maxAge = 3600
 	}
+	switch strings.ToLower(cfg.CookieSameSite) {
+	case "lax":
+		c.SetSameSite(http.SameSiteLaxMode)
+	case "none":
+		c.SetSameSite(http.SameSiteNoneMode)
+	default:
+		c.SetSameSite(http.SameSiteStrictMode)
+	}
 
 	c.SetCookie(
 		cfg.CookieName,