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, fourth authored graph. Shape: two stacked 3-way forks
(great_hall, upper_hall). The player picks twice in a row from a
wide menu — distinct from the binary forks in G8a/b and the parallel
Y-trees in G8c.
Completes lock-kind coverage by G8d: this is the first authored use of
LockLevelMin (tower_observatory gated at L7). With Perception (DC 14
study, DC 15 hidden_oratory), StatCheck INT (library), and LockNone,
all four non-trivial lock kinds now appear in shipping zones.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
