Repository navigation

Repair model JSON locally and enforce schemas before paying for a retry #164

Job	Run time
suite (mobile, pages)	2s
suite (desktop, journeys)	2s
suite (mobile, journeys)	2s
suite (desktop, pages)	2s
plan-explore	-1s
explore (${{ matrix.leg.persona }}, ${{ matrix.leg.target }})	-1s
	6s