ci(cad): UI-15 runtime matrix plus CORE/UI truth gates
UI-15: project_lifecycle (create/open/edit/save/restart/switch/undo
with A/B isolation and fail-closed corrupt/future/legacy cases),
script_limits (adversarial corpus), bvh_differential (randomized
brute-force comparison with tie discipline), export_interop
(queue discipline, STL/DXF/GLB semantics, grid termination),
runtime_ui (full lifecycle plus desktop/mobile budgets and soak).
cad.yml: CORE canonical-module gates, UI session-module gates
(switch/rebuild/journal/sandbox/ai/cache/BVH/coords/capture/exports),
integration-lane ownership notes; lanes otherwise unchanged.
andodeki
38feca50a1