docs: replace SDLC/Org distinction with unified 9 work-type taxonomy #23

Job	Run time
smoke-runtime (baseline, configs/registry_smoke_matrix.json)	21m 44s
smoke-runtime (artifact-only, configs/registry_smoke_artifact_matrix.json)	12m 10s
smoke-runtime (sg-only, configs/registry_smoke_matrix.json)	15m 22s
contract-audit	1m 29s
	50m 45s

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