docs: complete predecessor deployment reality plan

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a06d83-1cbc-71f2-b0dc-e0f48cedae43
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tegwick 2026-09-04 22:23:49 +02:00
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_Auto-generated by the Custodian State Hub._
## Generation transitions require capability, consumer, lane, and successor evidence
**Date:** 2026-09-04
**Decided by:** operator / codex
Adopt `G-GEN` in `architecture/retirement-gates_v0.1.md`. A generation is not
superseded merely because its runtime is scaled down or its successor answers a
health check. Closure requires explicit capability dispositions, reconciled
consumers and repository scope, independent sweeps of workload pulls, DNS,
access/credential lanes, schedules and runners, and a successor deployed on
infrastructure whose lifetime has been accepted.
The gate is `in_progress` for the Inter-Hub transition: the capability inventory
and successor placement are evidenced, while routed registry/access residuals
remain open. A routed handoff is transparent ownership, not completion.
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## Restore the previously-live seven-action tenant-engine image rather than rebuild
**Date:** 2026-08-16