Point
The repository contract chain changes atomically
A semantic change must keep prose, schemas, diagnostics, fixtures, processors, tests, assurance, self-hosting context, and release gates at one meaning.
- Posture
- asserted
- Lifecycle
- active
Atlas behavior is represented in several forms that can drift: normative prose, authored and output schemas, diagnostic registration, exact fixtures, validator code, independent-reader expectations, Check evaluation, assurance links, Meta-Atlas explanation, portal handoff language, and repository guardrails.
A semantic change is incomplete until every affected representation agrees at one reviewed revision. The canonical release command installs locked dependencies in a clean checkout and runs repository, validator, fixture, Meta-Atlas, Check, interoperability, and pilot gates. Any nonzero result blocks the release claim.
Repository gatesThe release gate checks synchronized prose, schemas, fixtures, processors, assurance, and self-hosting policy together.
Release governance binds every evidence surface to the exact reviewed revision and rejects stale gates or partial semantic updates.
A passing run no longer supports merge when the branch changes afterward. Review must cover the intended commit set, the clean-checkout release gate, and the same head used by continuous integration. A nonzero gate or unresolved assurance link blocks the release claim.
Contract changeEvery semantic representation must match the exact revision evaluated by the release gates.
Release stewardshipRejecting stale or partial evidence prevents a release from claiming a contract no single commit actually contains.