Update README

Implement voice recognition with speech-to-text integration

Add detailed voice recognition implementation plan

Complete voice permissions setup with speech recognition and adaptive UI

Configure iOS microphone permissions for voice commands

Refine UI with labeled buttons and improved layout proportions

Update UI design to match modern dark theme with bright green accents

Add AppColors class for color constants

Implement functional timer logic

Add timer control buttons to UI

Implement TimerDisplay widget with smooth UI updates

Update plan.md with checkbox format for all subtasks

Set up project structure and configure dark theme

Add CLAUDE.md and plan.md for project guidance and implementation plan

Update initial-requirements.md