CLAUDE: -OFFSET in px (s-first, full-frame meta, s-gated NaN); curt_dnn_thresh viz-only (recurrent gets full field)

-OFFSET (remote) reordered to {s,Vx,Vy,dx,dy} (s first -> ImageJ auto-ranges on it); Vx,Vy converted cells->px/level-frame (/vel_decimate); full-frame ROI written to the file metadata (self-describes its extent); Vx,Vy,dx,dy NaN'd where s<curt_dnn_thresh (s kept). curt_dnn_thresh is now VISUALIZATION-ONLY: the local inferROI feeds Layer 2 the FULL field (sThresh=0) so the recurrent gets the weak sub-threshold signal it integrates (no premature threshold = the LReLU lesson); dialog label/tooltip/decl updated to say viz-only, do-not-use-for-computation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>