Retain a job's exit status/code/true finish time for a configurable
window after update_worker_status() detects its exit, before
cleanup_worker_list() would otherwise discard all trace of it
(Requirements 3.4, 3.5, 3.7). Hooked into the single choke point both
production exit-detection paths (libuv IPC callback, dbus polling)
converge through, so retention happens-before any reap regardless of
which mechanism is active.
Also prunes on retain (not just on lookup), closing a review finding:
lookup currently has zero production callers until task 4.2 lands, so
without this the store would grow unboundedly for the daemon's uptime.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y4M5MJM2zK6nU43da267Ku
Rongsong Shen
e31012e8a7