0.11.2

A data-quality release: the liveness and pruning gaps from the post-0.10.0 audit (#41), and the mid-poll duplicate-cable flicker (#38).

Fixed

• The transient duplicate AP↔switch cable right after a poll starts is gone (#38). Normalize now runs inside the same transaction as each collector, so the web UI never reads fresh-but-unnormalized state. A normalize failure rolls back to a savepoint and the source's data still lands; per-source atomicity is unchanged.
• The audit's liveness and pruning gaps (#41) — the family where nothing lies, things just never leave:
  • vSphere no longer writes a VM's cached powerState (with a fresh timestamp) while the owning host is not responding — a virtualized firewall's own status report wins again. Placement still lands.
  • UniFi no longer writes port oper/admin/speed from a down or heartbeat-missed device's cached port_table; the last good values stand, the same gate temperature already had.
  • vnic_vlans is refreshed by replace: a port group moved to untagged, or a deleted VM's MAC, no longer re-emits phantom 802.1Q membership forever.
  • Devices removed from LibreNMS or the UniFi controller are retired instead of haunting every page with frozen status (each collector's own rows only, guarded on a non-empty listing).
  • Endpoint observations (ARP, leases, controller clients, the IPAM address book) age out after a week unrefreshed, so /drift stops treating months-old rows as live sightings.
  • VLANs that vanish from every switch config and SNMP table get the same claim-aware prune phpIPAM's rows got in 0.11.1.
  • The oxidized per-device port_vlans rewrite is scoped to its own rows, like the port_roles delete beside it always was.

Ten new regression tests cover the round (suite at 230).

Upgrade: docker compose pull patchbay patchbay-poller && docker compose up -d patchbay patchbay-poller. No schema or configuration changes.