Minor changes to message of file_routes, to be more informative.

backend/app/api/file_routes.py

@@ -96,9 +96,9 @@ async def upload_file(
         is_video = file.content_type.startswith("video/")
 
         if is_video and videos_count >= 1:
-            raise HTTPException(status_code=429, detail="Guest limit reached: 1 Video per day. Please login.")
+            raise HTTPException(status_code=429, detail="Guest limit reached: 1 Video per day. Please login to enjoy free services.")
         elif not is_video and images_count >= 5:
-            raise HTTPException(status_code=429, detail="Guest limit reached: 5 Images per day. Please login.")
+            raise HTTPException(status_code=429, detail="Guest limit reached: 5 Images per day. Please login to enjoy free services.")
 
     user_id = current_user.id if current_user else None