* test(#3543): add failing-first regression for unverifiable profile bake
* fix(#3543): bake no tier model when the effective model_profile is unverifiable
* test(#3543): use cleanup helper for planning dir removal in regression test
* test(#3543): use shared temp-dir and console-capture helpers in regression suite
* chore(#3543): backfill changeset pr number
* test(#3543): clear ambient xdg env overrides in global install tests
* test(#3543): assert baked model line by equality instead of dynamic regexp
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Co-authored-by: sim <sim@local>
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