feat(oam): Oxidized fully operational — all 4 Dell switches backing up [#337]

- oxidized user created on all 4 Dell PowerConnect switches (privilege 1)
- Configs pulled and pushed to KNEL/network-device-configs on Gitea
- SSH key generated on tsys-librenms, added to Gitea for auto-push
- Cisco router (pfv-rrinfra-rtr) blocked: fan failure floods console (#431)
- UNPoller fully operational with real UniFi credentials

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

oam/oxidized/hooks/git-push.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Oxidized post-push hook: auto-push to Gitea after each config change
+# Mounted into container at /home/oxidized/.config/oxidized/hooks/checkout/git-push.sh
+set -euo pipefail
+cd "$1"
+export GIT_SSH_COMMAND="ssh -o StrictHostKeyChecking=accept-new -i /home/oxidized/.config/oxidized/.ssh/id_ed25519"
+git push origin master 2>&1 || true

oam/oxidized/router.db

@@ -1 +1,4 @@
+pfv-r5-core-01.knel.net:powerconnect:oxidized:xAlZI3j7m8Bkgf0p
+pfv-r3-tor-mgmt-01.knel.net:powerconnect:oxidized:xAlZI3j7m8Bkgf0p
+pfv-r3-tor-stor-01.knel.net:powerconnect:oxidized:xAlZI3j7m8Bkgf0p
 pfv-r6-mgmt-01.knel.net:powerconnect:oxidized:xAlZI3j7m8Bkgf0p