"Twilight evening" — fits the corridor position (hop 22, one before
Abzu at terminus) without looking cartoonish next to the gravitas
of the deep frontier. Updated index.md etymology, GTTR entry,
Abzu references, and deep frontier regional index.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Complete Drifter's Guide coverage for the Deep Frontier.
61 new entries from hop 3 (Cairnside) to hop 23 (Abzu),
plus updated gttr-deep.md index with all 61 deep systems.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>