Fix movie webhook comprehensive IMDb detection and batch processing

- Fix movie webhook to use comprehensive IMDb detection (dir, filename, movie.nfo) instead of simple string search
- Fix batch processing NameError: use path_obj instead of undefined path variable
- Version bump to 1.8.3

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

VERSION

@@ -1 +1 @@
-1.8.2
+1.8.3

nfoguard.py

@@ -1623,7 +1623,7 @@ class WebhookBatcher:
             if media_type == 'movie':
                 expected_imdb = key.replace('movie:', '') if key.startswith('movie:') else key
                 # Use comprehensive IMDb detection (directory, filenames, NFO content)
-                detected_imdb = self.nfo_manager.find_movie_imdb_id(path)
+                detected_imdb = self.nfo_manager.find_movie_imdb_id(path_obj)
                 
                 # Check if detected IMDb matches expected (handle both full IMDb IDs and just numbers)
                 imdb_match = False
@@ -1834,9 +1834,18 @@ async def radarr_webhook(request: Request, background_tasks: BackgroundTasks):
             _log("ERROR", f"This prevents processing wrong movies due to path mapping issues")
             return {"status": "error", "message": f"Mapped movie path does not exist: {container_path}"}
         
-        # Verify the path contains the expected IMDb ID
-        if imdb_id not in container_path.lower():
-            _log("WARNING", f"IMDb ID {imdb_id} not found in container path {container_path}")
+        # Verify the path contains the expected IMDb ID using comprehensive detection
+        detected_imdb = nfo_manager.find_movie_imdb_id(Path(container_path))
+        imdb_match = False
+        if detected_imdb:
+            if detected_imdb == imdb_id or detected_imdb.replace('tt', '') == imdb_id.replace('tt', ''):
+                imdb_match = True
+        
+        if not imdb_match:
+            _log("WARNING", f"IMDb ID {imdb_id} not found via comprehensive detection in {container_path}")
+            _log("DEBUG", f"Detected IMDb: {detected_imdb}, Expected: {imdb_id}")
+        else:
+            _log("DEBUG", f"IMDb ID validated: {imdb_id} matches detected {detected_imdb}")
         
         # Create movie-specific webhook data with proper path validation
         movie_webhook_data = {