Move yt_dlp import inside method in VideoInfoMixin

The import of yt_dlp is now performed locally within the method to prevent import errors when yt-dlp is not installed. This change improves robustness for environments where yt-dlp may be missing.

src/gui/ytsage_gui_video_info.py

@@ -8,7 +8,6 @@ from PIL import Image
 from PySide6.QtCore import Qt
 from PySide6.QtGui import QPixmap
 from PySide6.QtWidgets import QHBoxLayout, QLabel, QMainWindow, QPushButton, QVBoxLayout, QWidget
-from yt_dlp import YoutubeDL
 
 from src.core.ytsage_logging import logger
 from src.gui.ytsage_gui_dialogs import (  # use of src\gui\ytsage_gui_dialogs\__init__.py
@@ -372,6 +371,9 @@ class VideoInfoMixin:
             return False
 
         try:
+            # Import yt_dlp locally to avoid import errors when yt-dlp is not installed
+            from yt_dlp import YoutubeDL
+            
             logger.debug(f"Attempting to save thumbnail for URL: {video_url}")
 
             ydl_opts = {