Ean Schuessler / mo-mcp

Refactor screen conversion services and enhance metadata

- Remove unused convert#ScreenInfoToMcpTool service (120+ lines of dead code)
- Port screen metadata feature from ScreenInfoToMcpTool to ScreenToMcpTool
- Add screen structure metadata (name, level, transitions, forms, subscreens)
- Improve screen tool discovery with better parameter extraction
- Enhance screen execution with fallback to URL when rendering fails
- Add comprehensive logging for debugging screen operations