ReleaseRevision Peggy check-runs authority

Use generated Peggy start rules, including ReleaseRevision, as the sole executable authority for Publish title, body-header, release-revision, and generated-doc grammar. Reject inline/blockquoted decoys and grammar drift by globally requiring exactly one exact View check runs marker, parsing only the body-start header, and requiring the supplied getsentry/<repo>, a lowercase 40-hex SHA, and the required /checks path followed by an optional final /. Update only parser-indexed SHA offsets; do not use standalone regexes or bullet-prefix counting for authority or uniqueness checks.