A ratatui TUI that provisions the SD card for a pre-flashed Typoena:
Preflight → Configure → SD card → Done. Clones the notes repo onto the
card with system git (PAT in http.extraHeader, never in origin), seeds
.typoena.toml, writes typoena.conf, strips AppleDouble, ejects. An
already-provisioned card is handled by a y-confirmed wipe-and-reclone
that only ever removes repo/ + the dirty journal.
This is the target of typoena.dev's `curl … | sh`. Also records firmware
auto-update options in docs/macroplan.md (v1.x).
