Mobile app

The Expo (React Native) app covers the daily loop away from a desk:

• Sign in with the same account (bearer sessions).
• My Work and project item lists.
• Item detail: fields, markdown-rendered descriptions and comments (same constrained grammar as web), state changes, and commenting.
• Inbox with unread badge and mark-read.

It is deliberately offline-tolerant rather than offline-first: reads cache, writes need a connection and fail loudly rather than queueing silently. Planning surfaces (board, cycles, roadmap, settings) remain web-only for now.