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Tommaso Bianchi
8b9ff36685
Twenty buttons on the CONSTRAIN bar, nine of them exercised. The other eleven were "implemented" in the sense that the kernel builds the right def for them -- which is exactly what was true of Parallel yesterday morning, right up until a user pressed it and got nothing. What a kernel test cannot see is whether the BUTTON is wired to the index its name claims. CON_BTN is 449 + 42*i over a hand-written name list, and it has drifted once already: six buttons were inserted, everything from index 6 on pointed at the wrong control, and nothing caught it for months because no rung pressed past index 5. D13 presses index 6; D14 through D22 press 8 to 19. The map turned out to be intact, which is worth knowing rather than assuming. D12 vertical, D13 equal_radius (its own button, not Equal's promotion), D14 concentric, D15 tangent, D16 midpoint, D17 symmetric (the three-pick form), D18 sym_h, D19 radius, D20 diameter, D21 fix, D22 dist_y. Three are shaped around a specific way the code could be wrong rather than around "does something happen": D20 exists for a factor of two. Diameter wired to the Radius handler gives r = 30 for a typed 30, and nothing on screen looks wrong. D21 -- Fix alone is unfalsifiable: nothing moved, so nothing proves the constraint exists. It only becomes observable when a SECOND constraint would otherwise move the fixed point, so the rung drives the pair to a 70 mm gap and checks which end travels. D14 asserts the radii did NOT change. Concentric is about centres; a solve that also equalised the radii would pass a naive check. D17 failed on its first run and the rung was wrong, not the app: all three entities are free, so the solver is entitled to satisfy the mirror by moving the AXIS instead of the points -- and it did, landing the pair symmetric about x = -8.18. It now measures signed perpendicular distance to the axis where the axis actually is, which is the stronger property anyway. Coverage: 20/20 buttons pressed, up from 9. Ladder 135 -> 177 properties across 43 rungs, all holding. snaporca-l2vm