This directory keeps project documentation out of the repository root while
leaving only the entry-point files there (README.md, README_EN.md, and
agent/tooling instructions).
- CI/CD and device lab — GitHub Actions workflow map, runner setup, and local equivalents.
- Install guide — Termux install flow and runtime prerequisites.
- Build guide — end-to-end build commands, troubleshooting, and packaging notes.
- Build process — historical build steps and process notes.
- Upgrade guide — checklist for moving to a new Flutter release.
- Changelog — version history and notable fixes.
- Release notes — notes used for the current GitHub release body.