VerticalShafts
Diagnosis only. No generation or placement changed.
The hypothesis was that the (0,0) spine (OriginSpineRadius 14) is the
universal connector, so "can this mouth reach the spine" would be the
real primordial-law test. Measured at margin 0, step 2, radius 192:
strate spine share largest? arr->spine dep->spine
TunnelNetwork 0.979 YES CONNECTED not connected
FlatPlain 1.000 YES CONNECTED CONNECTED
CrystalChamber 1.000 YES CONNECTED CONNECTED
Maze 0.997 YES coarse-lied CONNECTED
SurfaceWorld 1.000 YES CONNECTED CONNECTED
VerticalShafts 0.096 NO not conn. not connected
FloatingIslands 1.000 YES CONNECTED CONNECTED
Underwater 0.999 YES CONNECTED n/a
The spine forms one uninterrupted open interior run in 8/8 strates, and
holds essentially ALL the air in 7 of them. VerticalShafts is the lone
anomaly: the spine punches through as an isolated column holding 9.6% of
the air and is NOT the largest component.
So the archetype has three mutually unreachable things -- the spine, the
arrival network, the departure network. It has no lateral connectivity at
all. Over 16 seeds: spine open 16/16, spine largest only 8/16,
arrival->spine 1 connected, departure->spine 0 connected.
Neither extreme was right. The spine is not a universal connector, but it
is far from irrelevant: it is the de-facto backbone everywhere except
here, which reframes the bug as an ANOMALY to bring in line rather than a
missing feature to invent.
Ordering hazard confirmed on the record: making passage i depend on
passage i-1 would break LayoutOrderIndependence. Both candidate fixes
avoid it, because the spine is a fixed deterministic anchor that two
mouths can target independently.
Build clean, 19 succeeded / 0 warnings / 0 failed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bp7FxoQcSoiuhxjuLr6aBM
Fr0zkaandClaude Opus 5
5519b323c8