Secret rooms were dead content: every NodeKindSecret node silently
collapsed to a normal exploration fight and its authored LootBias
(1.5-3.0) was never read at runtime. D4 makes them what they read as —
no-combat treasure caches.
resolveRoom now diverts a secret node (keyed off the graph node, since
CurrentRoomType has already lost the kind) to resolveSecretRoom before
the RoomType switch — shared by manual !zone advance, !expedition run
autopilot, and the sim. Each secret pays a guaranteed journal page
(the D1a grant hook built "for secret rooms"), a LootBias-weighted
treasure roll (floored at elite weight), and a guaranteed zone-tier
consumable cache, with bespoke in-world discovery flavor.
Underdark was the only T2+ zone with no secret; added at throne_gallery
on the universal R4 tail (Lost Reliquary, Perception DC 17), merging to
throne_steps so it's length-neutral.
Two cross-zone keys: the Sunken Temple's Coral Reliquary grants a Sunken
Sigil that opens a Sealed Reliquary in Manor Blackspire; the Underforge's
Forge Vault grants an Underforge Seal that opens a Sealed Vault in the
Underdark. Keys are persistent inventory items matched against LockKey
key_id; grants are idempotent.
Graph validator + no-soft-lock pass on both touched graphs; combat golden
byte-identical; go build/vet/test green repo-wide.
Claude-Session: https://claude.ai/code/session_017mEwUmmS7aQTP2NQXj6rUa
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>
