Feat: introduce diagnostics and concurrency benchmark suites #87

Job	Run time
build (Debug)	23s
build (Release)	22s
dependency health	31s
examples:governance / RedisQueries	48s
test:governance-redis	22s
test:governance	26s
examples:core / FeatureFlags	20s
examples:core / BillingQuotas	41s
examples:core / IamRoles	23s
examples:core / WorkflowApprovals	41s
examples:governance / RequestLifecycle	20s
examples:governance / GovernedExecution	19s
test:core	33s
examples:governance / DecisionTaxonomy	16s
examples:governance / VersionedResolution	27s
examples:governance / Queries	19s
examples:governance / ApprovalWorkflow	27s
validation summary	4s
	7m 42s

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