Implement album deletion feature after metadata migration

- Added a new command-line argument `--delete` to allow users to delete single albums after successful metadata migration.
- Integrated the `unmonitor_and_delete_album` function to handle the deletion process for albums that meet the migration criteria.
- Enhanced the `migrate_plex_metadata` function to support exclusion of smart playlists during migration.
- Updated logging to provide detailed feedback on the deletion process and migration results.

src-cleanup/lidarr_delete.py

@@ -0,0 +1,49 @@
+"""Lidarr album deletion functions"""
+
+import logging
+from typing import Dict
+
+import requests
+
+logger = logging.getLogger(__name__)
+
+
+def unmonitor_and_delete_album(
+    base_url: str, headers: Dict[str, str], album_id: int
+) -> bool:
+    """Unmonitor and delete an album from Lidarr. Returns success status."""
+    try:
+        # First unmonitor the album
+        logger.debug(f"Unmonitoring album {album_id}...")
+        album_resp = requests.get(
+            f"{base_url.rstrip('/')}/api/v1/album/{album_id}",
+            headers=headers,
+            timeout=30,
+        )
+        album_resp.raise_for_status()
+        album_data = album_resp.json()
+
+        album_data["monitored"] = False
+
+        update_resp = requests.put(
+            f"{base_url.rstrip('/')}/api/v1/album/{album_id}",
+            headers=headers,
+            json=album_data,
+            timeout=30,
+        )
+        update_resp.raise_for_status()
+
+        # Then delete the album (deleteFiles=true to remove files, addImportListExclusion=false)
+        logger.debug(f"Deleting album {album_id}...")
+        delete_resp = requests.delete(
+            f"{base_url.rstrip('/')}/api/v1/album/{album_id}",
+            headers=headers,
+            params={"deleteFiles": "true", "addImportListExclusion": "false"},
+            timeout=30,
+        )
+        delete_resp.raise_for_status()
+
+        return True
+    except Exception as e:
+        logger.error(f"Failed to delete album {album_id}: {e}")
+        return False