- Replace Dict, List, Optional with dict, list, < /dev/null | None syntax - Fix abstract method implementation in message.py - Improve type annotations and function return types - Remove unreachable code in get_current_task_tool.py - Refactor HTML elements to use style attributes 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>