v0.23.0: Markdown tables, pinned todos, and MCP improvements

New features

- Markdown table rendering - CLI now properly renders markdown tables for better display of structured data and documentation
- Pinned todo plans - Pin important todo items to keep them visible and track tasks during long-running sessions
- MCP tool result formatting - Improved formatting for MCP tool results with cleaner, more readable output

Bug fixes

- Fixed thinking block support for chat completion APIs to enable extended reasoning in compatible models
- Fixed issue with baseline versions reverting back to non-baseline builds on update
- Fixed autonomy mode handling in droid exec command for more reliable execution
- Restored Ctrl+T keyboard shortcut functionality on Windows