Fresh-eyes review of the glow-up found the G5 side-ring texture applied to
whole tier cylinders - linear UVs on the caps rendered as diagonal stripes
across the disc. CylinderGeometry takes [side, top, bottom] materials: sides
keep Lane E's ring texture, caps get a new radial recordCapGrooveTexture()
(machines/util.ts) with ring count scaled per tier radius so groove pitch
stays constant. Also lands the three handoff-doc updates from the phase.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Lanes A (engine), B (player), C (worldgen), D (machines/quest),
E (audio/fx/ui) as landed, each with HANDOFF.md + update docs.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>