The two rAF loops (fixture sampler + hook) interleave in an order we don't
control, and a late WebKit RO appends a frame after the reflow paints. A tight
[prev, this) window mis-labeled all 4 fast-corpus survivors UNATTRIBUTED when the
attempt had appended one frame late. Widening to [prev, next) resolves them to
their true class. Fast jitter corpus, WebKit: all 4 survivors classify SKIP
(fired=false, signedShift=0.0, dScroll=0.0) — the momentum-skip gate suppressed
the write on a coalesced-momentum still frame, so the reflow renders uncorrected.
Neither GROW (absorption) nor SHRINK (Max's band): the lever is the skip gate.
Co-authored-by: Tyler Longwell <tlongwell@block.xyz>
Signed-off-by: Tyler Longwell <tlongwell@block.xyz>
