server was sized for a campfire, not a fleet. 25 db connections, every agent
report flinging goroutines into the void, the syncer plodding one repo at a
time while clutching a lock nobody needed. loosened the choke points:
- db pool 25 -> 100 + connection lifetime, all env-tunable
- bounded pool for the report-path fire-and-forget work; /health/tasks to
watch it breathe. no more unbounded goroutine spray per report
- upstream syncer runs concurrent now, dropped the dead mutex around repology
fetches, reconciler single-flights instead of locking through the whole crawl
- scheduler caps jobs per tick so an aligned fleet can't stampede the db
- swatted a context-cancel bug that was quietly killing immediate syncs
builds clean, race detector's calm.
