m3ultra 0f5f4d8368 Make rake_pivot a real pivot; log Sprint 2 in THREADS ...

rake_pivot shipped as a childless empty, so rotating it moved nothing — and
rotating the whole GLB instead, which is the only alternative, tips the concrete
footing out of the ground along with the post. DESIGN.md makes raking away from
the load a player decision, so the handle has to actually work.

It now holds post + pad_eye + top_anchor, with footing left on the root: rake it
8° and the post leans while the concrete stays planted. Asserted both directions
in e.test.js — the head must travel over 0.3 m and the footing under 0.01.

Same class as the canopy bug, found the same way: by driving the handle in a
test instead of eyeballing the model. Exported dims unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-17 00:56:15 +10:00

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