Three more zones follow the goblin_warrens pattern from D1-a: add the
missing Trap anchor and deepen the graph so the longest entry→boss walk
lands in its tier's target band.
crypt_valdris (T1): 8 → 17 nodes, longest 13 (band 12–14)
forest_shadows (T2): 9 → 19 nodes, longest 16 (band 16–20)
sunken_temple (T2): 10 → 26 nodes, longest 16 (band 16–20)
Topology preserved per zone:
- Crypt diamond + Perception-DC-15 secret off side_chapel.
- Forest asymmetric main fork (long branch carries the elite) +
WIS-DC-14 secret pre-boss.
- Sunken Temple sequential forks with no mid-path merge (four leaves
all terminate at the single boss room).
MinRooms/MaxRooms re-pitched to the §2 bands so the dice fallback also
lands in band for any future graphless zone.
T2 zone, third authored graph. Shape: two-tier sequential forks where
each path is unique up to the boss room. Four committed leaves
(kuo_toa_pen / glyph_chamber / aboleth_thralls / coral_reliquary) all
terminate at the boss; no mid-path node has >1 incoming edge.
Differentiates from Crypt's diamond and Forest's asymmetric-diamond by
producing two parallel "Y" subtrees on the !zone map instead of a
converging branch. Exercises Perception + StatCheck (STR) + LockNone
in a single zone (covered by TestSunkenTempleGraph_LockKindCoverage).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
