Adiciona módulo `deps` que, antes de qualquer operação, verifica se
fzf e tmux estão instalados no sistema. Caso faltem, detecta o
gerenciador de pacotes da distro (apt, pacman, dnf, yum, zypper,
emerge, xbps, apk), informa ao usuário e oferece instalar com o
comando adequado.
- `src/deps.rs`: Dep, PackageManager, BinaryChecker (trait injetável),
check_missing(), detect_package_manager(), ensure_dependencies()
- `src/main.rs`: chama ensure_dependencies() antes do fluxo principal
- `tests/deps.rs`: 11 testes de integração com SystemBinaryChecker real
- `tests/docker/`: Dockerfile multi-stage + suite de 15 testes em
container Ubuntu 24.04 simulando novo usuário (sem fzf/tmux)
- `.dockerignore`: exclui target/, .git/, .claude/ do contexto Docker
tests/scan.rs: 3 tests exercising scan_from_root via the public API —
finds git repos, skips hidden directories, and respects max_depth.
Note: tempfile::tempdir() generates hidden paths (.tmpXXXXXX) on this
system, so each test creates a visible scan_root/ subdirectory to avoid
filter_entry silently skipping the walk root.
tests/session_config.rs: 2 tests for SessionConfig::load_from_project —
loads a .tmuxido.toml written into a temp dir and returns None when the
file is absent.
tests/cache_lifecycle.rs: round-trip test that saves a ProjectCache and
reloads it, verifying the projects list survives serialisation.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
