ci / rust (push) Failing after 5m13s
- `RunConfig` grows a `config_path: Option<PathBuf>` field, plumbed from the umbrella binary's global `--config` flag through to `MaestroConfigFile` loading. Explicit `--config <path>` wins over `$MAESTRO_CONFIG` over the platform default; a missing file still falls back to shipped defaults. - `docs/INSTALL.md` gains a "terminal UI" section: that `maestro tui` ships in the default feature set, how to opt out (`--no-default-features --features cli,daemon`), the `MAESTRO_DAEMON_URL` override, and a worked example of `[tui]` / `[tui.keymap.normal]` config pointing at the full action vocabulary in the design spec. - Adds a thin-build line for `--features cli` (CLI-only client) and lists `tui` in the default-feature set. - CLAUDE.md repo-layout block lists the new `maestro-tui` crate. Closes the NAP-275 v1 epic.