docs: substantive proof-debt.adoc per standards#203 (supersedes #37) #36

Job	Run time
governance / Code quality + docs	13s
governance / Trusted-base reduction policy	6s
governance / Validate Hypatia baseline	6s
governance / Guix primary / Nix fallback policy	4s
governance / Language / package anti-pattern policy	11s
governance / Security policy checks	7s
governance / Well-Known (RFC 9116 + RSR)	4s
governance / Workflow security linter	3s
	54s

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