v0.3.20

Highlights:\n- Plan mode now supports explicit acceptance flow with numbered options (1-4) before implementation.\n- Added dedicated plan confirmation popup with Agent/YOLO accept, revise, or exit actions.\n- request_user_input prompts now support number-key quick selection for smoother UX.\n- Context meter accounting now uses compacted tool-result content, reducing false token spikes on large file/tool outputs.\n- Popup sizing tuned to be less obstructive while keeping options visible.

Full Changelog: v0.3.19...v0.3.20