Code refactoring: Clean up SERVER browsing implementation

- Extract common XML parsing logic to eliminate ~135 lines of duplication
- Create helper methods for pagination controls and navigation
- Add BrowseMedia factory methods for cleaner object creation
- Simplify navigation path management system
- Remove redundant debug logging (~10 lines)
- Improve code maintainability and readability

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

Co-Authored-By: Claude <[email protected]>

Author: rihokirss

custom_components/yamaha_rn301/manifest.json

@@ -9,5 +9,5 @@
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/rihokirss/homeasisstant-rn301/issues",
   "requirements": [],
-  "version": "1.4.0"
+  "version": "1.4.1"
 }