feat(oam): deploy Smokeping, NetDisco, Oxidized, UNPoller on tsys-librenms [#337][#375]

Deploy OAM monitoring stack on tsys-librenms VM:

- Smokeping: fully operational (port 8081, 16 targets, FPing probing)
- NetDisco: backend+DB+PostgreSQL running (port 8082), all 4 Dell switches
  discovered via SNMP. Web UI blocked by Dancer session_cookie_key config
  issue — needs interactive netdisco-deploy run
- Oxidized: container running (port 8083), deployed with placeholder
  credentials — needs switch login/password to start config backups
- UNPoller: config + docker-compose ready, blocked on Docker image
  availability (image moved from all common registries)
- Weathermap: not yet started (deferred to separate commit)

All configs use DNS names only (no IP literals). All scripts pass
shellcheck via check-rules.sh.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

oam/smokeping/Targets

@@ -0,0 +1,111 @@
+*** Targets ***
+
+probe = FPing
+
+menu = Top
+title = Network Latency Monitor
+
++ Infrastructure
+menu = Infrastructure
+title = Core Infrastructure
+
+++ pfv-r5-core-01
+menu = pfv-r5-core-01 (Core Switch)
+title = Dell PowerConnect 5448 - Rack 5 Core
+host = pfv-r5-core-01.knel.net
+
+++ pfv-r3-tor-mgmt-01
+menu = pfv-r3-tor-mgmt-01 (Rack 3 Mgmt TOR)
+title = Neyland 24T - Rack 3 Management TOR
+host = pfv-r3-tor-mgmt-01.knel.net
+
+++ pfv-r3-tor-stor-01
+menu = pfv-r3-tor-stor-01 (Rack 3 Storage TOR)
+title = Neyland 24T - Rack 3 Storage TOR
+host = pfv-r3-tor-stor-01.knel.net
+
+++ pfv-r6-mgmt-01
+menu = pfv-r6-mgmt-01 (Rack 6 Mgmt Switch)
+title = Neyland 24T - Rack 6 Management Switch
+host = pfv-r6-mgmt-01.knel.net
+
++ Servers
+menu = Servers
+title = Server Infrastructure
+
+++ pfv-stor1
+menu = pfv-stor1
+title = Storage Server 1
+host = pfv-stor1.knel.net
+
+++ pfv-bms
+menu = pfv-bms (HomeAssistant)
+title = Home Assistant / UniFi Controller
+host = pfv-bms.knel.net
+
+++ tsys-librenms
+menu = tsys-librenms
+title = LibreNMS Monitoring Server
+host = tsys-librenms.knel.net
+
++ Wireless
+menu = Wireless
+title = Wireless Access Points
+
+++ ap-tablemount
+menu = ap-tablemount
+title = UniFi AP-AC-Lite (Table Mount)
+host = ap-tablemount.knel.net
+
+++ ap-wallmount
+menu = ap-wallmount
+title = UniFi AP-AC-LR (Wall Mount)
+host = ap-wallmount.knel.net
+
++ ProxmoxHosts
+menu = Proxmox Hosts
+title = Proxmox Hypervisor Nodes
+
+++ pfv-tsys1
+menu = pfv-tsys1
+title = Proxmox Host - Infrastructure
+host = pfv-tsys1.knel.net
+
+++ pfv-tsys3
+menu = pfv-tsys3
+title = Proxmox Host - Compute
+host = pfv-tsys3.knel.net
+
+++ pfv-tsys4
+menu = pfv-tsys4
+title = Proxmox Host - Storage + PBS
+host = pfv-tsys4.knel.net
+
+++ pfv-tsys5
+menu = pfv-tsys5
+title = Proxmox Host - Storage + Sandbox
+host = pfv-tsys5.knel.net
+
+++ pfv-tsys6
+menu = pfv-tsys6
+title = Proxmox Host - RackRental
+host = pfv-tsys6.knel.net
+
+++ pfv-tsys7
+menu = pfv-tsys7
+title = Proxmox Host - RackRental
+host = pfv-tsys7.knel.net
+
+++ pfv-tsys9
+menu = pfv-tsys9
+title = Proxmox Host - Infra + Compute
+host = pfv-tsys9.knel.net
+
++ Power
+menu = Power
+title = Power Devices
+
+++ pfv-garage-pdu-01
+menu = pfv-garage-pdu-1
+title = APC PDU (Garage)
+host = pfv-garage-pdu-1.knel.net