chore(gitignore): adopt #67/#68 canonical entries, untrack ui/package… #11

Job	Run time
governance / Guix primary / Nix fallback policy	22s
governance / Well-Known (RFC 9116 + RSR)	22s
governance / Workflow security linter	22s
governance / Language / package anti-pattern policy	22s
governance / Code quality + docs	21s
governance / Security policy checks	21s
	2m 10s

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