- agent.go: guard reader goroutine msgCh send with sessionCtx.Done()
to prevent permanent goroutine hang
- checks.go: cache regex.Compile (not MatchString) per HTTP check;
cache x509.SystemCertPool via sync.Once across SSL checks
- lldp.go: remove dead walkErrors variable
- ssh_test.go: reset global host key store to fix TOFU port collision
flakiness across tests
- .gitignore: add towerops-agent binary, .tool-versions
sync.Once contains sync.noCopy and cannot be assigned by value.
Reset with a fresh sync.Once{} in defer instead of save/restore.
Also gitignore known_hosts.json runtime data.
