FX.65 BimCraft thickness / type change: the corner follows only when exactly one straight wall meets the end

Wall tool spec page 3 (Duncan, 2026-11-05), tracked at /roadmap-internal 'BimCraft wall tool specification'. Code checked in the a Discord member source 2026-11-05 (the spec read commit a538e43). Found while checking the 'Already right, keep it' list on page 3: updateWall, the location-line shift (changes.justification not centre): neighbours are looked up and then skipped unless nbs.length === 1 and the neighbour is not curved. So a thicker wall at a three-wall node, at a T, or next to a curved wall keeps its old corner and the junction is left open or overlapped, while the two-wall straight corner case Duncan tested works. Wanted: spec test 5 (set the location line to the exterior face, thicken the wall: exterior face does not move, wall grows inward, joins clean up) at L, T, X and curved neighbours. Not reproduced yet; nothing fixed. Other apps: the same question applies to CadCraft's plan walls (thickness change) and goes into FX.59's test run.

walls-09 2026-11-06: Fixed in /lab: a location line that holds now moves the centre line square with the join solver (squareMove), so the corner follows at an L, at a node of three walls, at a T (the partition comes with it) and next to a curved wall. Spec test 5 Pass: node (--walltools) and the real page (outside face held at -92.1 with 300 thickness, both corners follow).