Self-contained brief for a fresh agent: bug description with the
2026-05-06 screenshot evidence, what's confirmed (Z fix from #48 is
in, Stab placement is correct, dat content matches), five competing
hypotheses (LCG noise drift / cell-coord transposition / Align
reference / slope filter / SceneInfo lookup), and the cdb retail
trace as the gold-standard diagnostic to disambiguate. Same pattern
as the #48 handoff — paste the doc into a new session as the prompt.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
