another fix

backend/internal/dev/handler.go

@@ -17,6 +17,7 @@ import (
 
 type Config struct {
 	DBDriver        string
+	APIURL          string
 	StorageEndpoint string
 	StorageBucket   string
 	StorageUseSSL   bool
@@ -67,6 +68,7 @@ func (h *Handler) Diagnostics(c *gin.Context) {
 	writeJSON(c, http.StatusOK, map[string]any{
 		"environment": "development",
 		"now":         time.Now().UTC().Format(time.RFC3339),
+		"url":         h.config.APIURL,
 		"user": map[string]string{
 			"id":    user.ID.String(),
 			"email": user.Email,