re: validate the screen layout against the running game -- eight rows, +/-2 px

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Booted to the ARSENAL and detected the eight teal category chips by colour, then
compared their row centres against the eight prbtn1..8.rat placements parsed from
eng\prmain_scr.prt. All eight fit

    screen_Y = placement_Y + pivotY(14) + chrome(45)

with residuals -1,-1,-1,-2,0,-2,-1,-2 px. The spacings are the real signature:
predicted 54,56,55,54,56,55,55 against observed 54,56,54,56,54,56,54 -- an
irregular alternating pattern, not a round number that could match by luck. The
one free parameter is the 45 px emulator window chrome, which is not part of the
game, and the residual is centroid measurement noise.

Confirms three things together: the declaration table is the element set, the
placement region gives real screen coordinates, and the pivot composes additively
(pivotY 14 = half the 28 px chip, so placement is top-left as documented).

Explicitly NOT confirmed: the max-dwell rule for animated elements. These buttons
are static -- every keyframe identical -- which is exactly what makes them a clean
ruler. That rule needs an element captured mid-slide.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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Claude (auto-RE)

2026-08-11 22:25:18 +00:00

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