HeartbeatRequest grows an optional lifecycle field carrying per-decky
completion records from the worker:
[{decky_name, operation, status, error?, completed_at?}]
For each delta, the master finds the most-recently-started open
DeckyLifecycle row for (decky_name, operation, host_uuid) and flips
it to terminal with the worker's error text + timestamp. Stale
duplicates (row already sealed or never existed) are logged and
dropped -- not errors.
Each successful pivot also emits decky.<name>.lifecycle on the bus
so the dashboard sees the transition without waiting for its next
poll tick.
This is the master-side completion channel for the worker's 202
fire-and-forget /deploy and /mutate.
anti
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