Add k9-ecosystem aggregator hub (staged for extraction) #112

Job	Run time
governance / Validate Hypatia baseline	7s
governance / Workflow security linter	6s
governance / Security policy checks	8s
governance / Trusted-base reduction policy	11s
governance / Well-Known (RFC 9116 + RSR)	9s
governance / Guix primary / Nix fallback policy	8s
governance / Language / package anti-pattern policy	10s
governance / Licence consistency	8s
governance / Code quality + docs	19s
	1m 26s

Provide feedback