Merge remote-tracking branch 'origin/main' into feat/custom-fields

backend/internal/dto/validations.go

@@ -124,11 +124,11 @@ func ValidateCallbackURLPattern(raw string) bool {
 }
 
 // ValidateResponseMode validates response_mode parameter
-// If responseMode is present, it must be "form_post" or "query"
+// If responseMode is present, it must be "form_post", "query", or "fragment"
 // Empty responseMode is allowed (field not provided, use default)
 func ValidateResponseMode(responseMode string) bool {
 	switch responseMode {
-	case "form_post", "query":
+	case "form_post", "query", "fragment":
 		return true
 	case "":
 		return true

backend/internal/dto/validations_test.go

@@ -102,8 +102,9 @@ func TestValidateResponseMode(t *testing.T) {
 	}{
 		{"valid form_post", "form_post", true},
 		{"valid query", "query", true},
+		{"valid fragment", "fragment", true},
 		{"valid empty", "", true},
-		{"invalid fragment", "fragment", false},
+		{"invalid unknown", "unknown", false},
 	}
 
 	for _, tt := range tests {