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Grains riding a belt or filter cast no shadow (t37)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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44r0n7
2026-10-25 20:04:44 -04:00
co-authored by Claude Opus 5.5
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@@ -4,6 +4,14 @@ What agents have done, newest first. Add an entry for every piece of work: the d
note or request it was for, what changed, the files touched, the tests run, and anything left
open or not verified. Keep each entry short; the git history has the details.
## 2026-10-25: t37 follow-up: belt loads cast no shadows (Claude Code, Codex)
- The owner saw grains riding a belt overhead still shading the ground. `onBeltForLight(i)` in
`src/render/light.js` walks down through up to 12 loose cells to a belt or filter; such cells
are skipped by the light roof and pass light like air. `builtForLight` is unchanged, so the t33
loose-grain shading still applies to belt loads. Heaps on rock, silos and wall floors still shade.
- `test/t_light.js` (56 checks); `run_all.py --browser` ALL PASSED.
## 2026-10-25: t35: diagonal screw tubes (Claude Code, Codex)
- Parts `P_TUR`..`P_TUL` (11-14), `TUBE_PARTS`, and an `IS_TUBE` table replacing every