step() opened `if (!camera) return`, which read as an innocent null-guard and
was in fact a physics gate: a harness with no camera skipped the shadow-grid
rebuild, so gardenExposure/gardenHailExposure reported full exposure no matter
what the cloth was doing, and every rig scored as if the sail did not exist.
hp 36 was the bare-bed constant all along. It cost gate 0 two sprints of four
lanes' time before A found it, and the fix belongs in my file, not in each
harness that trips over it.
A camera means "there is a view to place things in", not "the weather is real".
So the grids — what the sail actually DOES — now rebuild above the render gate,
with the yard centre as the wind-sample fallback; only drops, dome, lights and
audio sit below it. Headless callers get correct numbers and skip the 3k drop
matrices they were never going to draw.
Asserted both halves so it cannot come back: a camera-less skyfx shelters the
bed (hail shadow > 0.9, exposure < 0.1 under a panel), and the camera does not
change the physics — headless and viewed shadows agree to 1e-9. If anyone
re-adds an early return, that test goes red.
Selftest 264/0/0 + the 2 gate-0 skips.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
807c02fb9e