Graham McIntire 3f1d97218d fix(alerts): auto-resolve device_down alerts when agent polls device successfully ... When agents poll devices via SNMP and get successful results, the code was only processing sensor/interface data without updating device status or resolving alerts. This caused device_down alerts to persist even after devices came back online. This fix: - Updates device status to 'up' when SNMP polling succeeds - Auto-resolves any active device_down alerts - Creates device_up alert (matching DeviceMonitorWorker behavior) - Broadcasts device_status_changed via PubSub Also fixes device_up alert creation to include resolved_at timestamp (matching DeviceMonitorWorker behavior). Test coverage: Added test verifying auto-resolution when device recovers.		2026-03-05 16:47:48 -06:00
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agent_channel_test.exs	fix(alerts): auto-resolve device_down alerts when agent polls device successfully	2026-03-05 16:47:48 -06:00