e9ad92de01
feat: nav export + conflict guard + UAT seed (GRO-2157, GRO-2225, GRO-2235)
Squash-merges PR #192: uat→main PROD promotion.
Freezes at validated SHA 4868f18 (UAT regression GRO-2261 11/11 PASS).
Bundles: GRO-2157 (nav export), GRO-2225 (UAT seed), GRO-2235 (conflict guard).
CTO-reviewed and approved (review #4542).
Co-authored-by: Flea Flicker <22+gb_flea@noreply.git.farh.net>
Co-committed-by: Flea Flicker <22+gb_flea@noreply.git.farh.net>