refactor(doc-truth): consolidate the two #176 guards into one unified check-doc-truthing.sh #610

Job	Run time
governance / Security policy checks	33s
governance / Trusted-base reduction policy	27s
governance / Well-Known (RFC 9116 + RSR)	39s
governance / Validate Hypatia baseline	34s
governance / Guix primary / Nix fallback policy	28s
governance / Code quality + docs	38s
governance / Language / package anti-pattern policy	29s
governance / Workflow security linter	44s
governance / Licence consistency	34s
	5m 6s

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