fix: progress bar external detection and download row removal

- Handle JsonElement when deserializing ProviderIds from cache
- Check for external provider keys (SquidWTF, Deezer, Qobuz, Tidal)
- Fix row removal selector to properly escape path
- Progress bar now correctly shows local vs external split

allstarr/wwwroot/index.html

@@ -1628,7 +1628,8 @@
                     showToast('File deleted successfully', 'success');
                     
                     // Remove the row immediately for live update
-                    const row = document.querySelector(`tr[data-path="${CSS.escape(path)}"]`);
+                    const escapedPath = path.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
+                    const row = document.querySelector(`tr[data-path="${escapedPath}"]`);
                     if (row) {
                         row.remove();
                     }