Historical field note

This record preserves prior investigation or planning evidence. It is not a current operating contract; use the numbered book and current runbooks for instructions.

v1.3.1 fleet canary

At 2026-08-28T21:49:27Z, task task_d894080c2eac4d6e92a288e8ec9f23e4 was executed by the hub worker as the post-deploy canary for hub version 1.3.1 at git SHA 7e1f0735.