They proposed the test and said they had not run it. It needs the port's render
beside the capture, so it was mine: a shift makes the signed residual track the
gradient (and the fitted slope is the shift in pixels), a blur makes it track the
laplacian. New tool, tools/port/edge-residual-kind.
Controls first, and they are not optional: a known +1 px shift reads back as
+0.938 px (r +0.789), a known blur as r -0.896 on the laplacian, neither leaking
into the other's channel.
Result: -0.010 px, -0.009 px, laplacian r +0.103. Flat. Any whole-frame
translation is under a hundredth of a pixel, and the weak blur term has the
opposite sign to the blur control. Misregistration is excluded.
Reach: whole-frame fit. One misplaced element is a small share of 38 752 edge
pixels and would not move these numbers -- this excludes a GLOBAL translation,
not a local one. A misplaced soft element remains untouched.
Exit codes 0 or 2, no 1 -- it classifies, it does not judge. The control-failure
branch verified by raising the thresholds: report suppressed, exit 2.
Also: GP_DIALOG 2/3 restored to authored/flow.json. I declined to re-add it on a
relay; they have now taken the ja capture (HANDOFF at 5a7f34d) -- 1.82 % of pixels
in four bands, EASY/NORMAL/HARD not among them because JP keeps Latin script. My
objection stands as an objection: adjacency never implied a language pair, and 26
of 65 adjacent pairs differ in button count. The claim now rests on a capture
instead of on that inference.
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