Length is now sourced from the zone graph's longest entry→boss path,
not the dice roll, so "Room X/Y" matches what the player walks. The
dice fallback stays for graphless zones.
Goblin Warrens grows to the T1 12–14 band (13-node traversal): adds the
missing Trap anchor and deepens both fork branches + the post-merge
approach. Pattern reference for the remaining zones in D1-b…d.
T1 single-fork shape with no secret — deliberately the simplest
authored topology, mirroring the Crypt of Valdris pattern minus the
secret tail. Serves as the baseline reference shape; G8b onward will
vary topology (stub branch, sequential forks, hub-and-spoke, gauntlet,
convergent triangle) so zones feel structurally distinct on the
!zone map.
Validator-checked at init via BuildGraph. Both branches reach boss;
the Perception (DC 12) side carries a player-facing hint per plan §G8
guideline ("locked paths should always have a hint").
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>