Both T3 zones follow the D1-a/b pattern: extend the graph so the longest
entry→boss walk lands in band, keep the zone's authored topology intact.
manor_blackspire (T3): 11 → 35 nodes, longest 23 (band 22-26)
underforge (T3): 10 → 31 nodes, longest 23 (band 22-26)
Topology preserved per zone:
- Manor: two-stacked-3-way forks identity + full lock-kind coverage
(LockNone, LockPerception, LockStatCheck, LockLevelMin). Adds the
missing Trap anchor (Cursed Threshold). All six spokes are 3 mid-nodes
so route choice is loot/encounter character, not shortcut economics.
- Underforge: one-way-descent gauntlet identity preserved — 17-node
linear preamble through the existing Cooling River (TRAP) and Magma
Chamber (ELITE), single 3-way antechamber fork before boss. All three
antechamber spokes are 4 mid-nodes.
MinRooms/MaxRooms re-pitched 7-9 → 22-26 so the dice fallback also lands
in band for any future graphless variant.
T3 zone, fifth authored graph. Shape: five-node linear preamble
(sealed_gate → forge_descent → cooling_river → magma_chamber elite)
followed by a single 3-way antechamber fork before the boss.
Bends the plan §G8 "two forks for T2+" guideline to a single late
fork-with-three-options because the gauntlet shape is the design
intent — Kharak Dûn is a one-way descent. Triple-option antechamber
(direct / DEX-checked catwalks / Perception-found forge_vault secret)
preserves agency at the commitment moment.
Map renders as a long horizontal stem with a 3-leaf fan at the right
edge — visually distinct from any earlier zone.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
