Merge branch 'main' into feat/network-probes

Resolved conflict in internal/records/records.go:
- Upstream refactor moved deletion code to records_deletion.go and
  switched averaging functions from package-level globals to local
  variables (var row StatsRecord / params := make(dbx.Params, 1)).
- Kept AverageProbeStats and rewrote it to match the new local-variable
  pattern.
- Dropped duplicated deletion helpers from records.go (they now live in
  records_deletion.go).
- Added "network_probe_stats" to the collections list in
  records_deletion.go:deleteOldSystemStats so probe stats keep the same
  retention policy.

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/gliderlabs/ssh v0.3.8
 	github.com/google/uuid v1.6.0
 	github.com/lxzan/gws v1.9.1
-	github.com/nicholas-fedor/shoutrrr v0.14.1
+	github.com/nicholas-fedor/shoutrrr v0.14.3
 	github.com/pocketbase/dbx v1.12.0
 	github.com/pocketbase/pocketbase v0.36.8
 	github.com/shirou/gopsutil/v4 v4.26.3