fix(coordination): restore missing .gitmodules for absolute-zero submodule #138

Job	Run time
governance / Language / package anti-pattern policy	33s
governance / Guix primary / Nix fallback policy	33s
governance / Code quality + docs	10s
governance / Workflow security linter	4s
governance / Check Workflow Staleness	9s
governance / Trusted-base reduction policy	9s
governance / Licence consistency	9s
governance / Well-Known (RFC 9116 + RSR)	38s
governance / Security policy checks	40s
governance / Validate Hypatia Baseline	0s
	3m 5s

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