Fix permission error when copying files to network directory

- Replace shutil.copy2() with shutil.copyfile() in enhanced_provider.py
- Replace shutil.copy() with shutil.copyfile() in aniworld_provider.py
- copyfile() only copies content, avoiding metadata permission issues

src/core/providers/aniworld_provider.py

@@ -326,7 +326,8 @@ class AniworldLoader(Loader):
 
                 if os.path.exists(temp_path):
                     logging.debug("Moving file from temp to final destination")
-                    shutil.copy(temp_path, output_path)
+                    # Use copyfile instead of copy to avoid metadata permission issues
+                    shutil.copyfile(temp_path, output_path)
                     os.remove(temp_path)
                     logging.info(
                         f"Download completed successfully: {output_file}"

src/core/providers/enhanced_provider.py

@@ -555,7 +555,8 @@ class EnhancedAniWorldLoader(Loader):
                     # Verify downloaded file
                     if file_corruption_detector.is_valid_video_file(temp_path):
                         # Move to final location
-                        shutil.copy2(temp_path, output_path)
+                        # Use copyfile instead of copy2 to avoid metadata permission issues
+                        shutil.copyfile(temp_path, output_path)
 
                         # Calculate and store checksum for integrity
                         integrity_mgr = get_integrity_manager()