The operational break-glass ops (Owner provision, OP create, halt, Sync backup) are built and oracle-verified. The fourth §B4 line item — the tarS3 archive backend — is recorded as a deliberate deferral, not a silent gap: config.Load fail-closes store=tarS3 (frozen by TestLoadRejectsUnimplementedArchiveStore), tarLocal is the tested baseline every backup/restore path uses today, and offsite/cross-cluster DR is opt-in future work. Supersedes the "S3 remains open" note in the phase-2b peer doc.
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