31bdb1586f
Implement the core timer feature following the src/features/ architecture: - useTimerEngine hook: drift-free Date.now() delta countdown (100ms tick), explicit state machine (IDLE → GET_READY → WORK → REST → COMPLETE), event emitter for external consumers (PHASE_CHANGED, ROUND_COMPLETED, COUNTDOWN_TICK, SESSION_COMPLETE), auto-pause on AppState interruption (phone calls, background), expo-keep-awake during session - TimerDisplay component: full-screen animated UI with 600ms color transitions between phases, pulse animation on countdown, flash red on last 3 seconds, round progress dots, IDLE/active/COMPLETE views - TimerControls component: stop/pause-resume/skip buttons with Ionicons - Timer route (app/timer.tsx): fullScreenModal wiring hook → display - Home screen: dark theme with START button navigating to /timer - Project docs: CLAUDE.md (constitution), PRD v1.1, skill files - Shared constants: PHASE_COLORS, TIMER_DEFAULTS, formatTime utility - Types: TimerPhase, TimerState, TimerConfig, TimerActions, TimerEvent Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Welcome to your Expo app 👋
This is an Expo project created with create-expo-app.
Get started
-
Install dependencies
npm install -
Start the app
npx expo start
In the output, you'll find options to open the app in a
- development build
- Android emulator
- iOS simulator
- Expo Go, a limited sandbox for trying out app development with Expo
You can start developing by editing the files inside the app directory. This project uses file-based routing.
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When you're ready, run:
npm run reset-project
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