feat(dashboards): Server Room starter dashboard [#618]

configuration.yaml

@@ -16,3 +16,11 @@ bluetooth:
 
 # Metrics endpoint for VictoriaMetrics add-on scrape [#621]
 prometheus:
+
+lovelace:
+  mode: storage
+  dashboards:
+    pfv-server-room:
+      mode: yaml
+      title: Server Room
+      file: dashboards/server-room.yaml

dashboards/server-room.yaml

@@ -0,0 +1,38 @@
+# Server Room dashboard [#618] — git-deployed via KNEL/pfv-bms
+title: Server Room
+type: panel
+cards:
+  - type: grid
+    columns: 2
+    square: false
+    cards:
+      - type: gauge
+        entity: sensor.tsys1_ups_battery_charge
+        name: tsys1 UPS battery
+        unit: "%"
+        severity:
+          green: 60
+          yellow: 40
+          red: 20
+      - type: entity
+        entity: sensor.tsys1_ups_status
+        name: tsys1 UPS
+        icon: mdi:ups
+      - type: history-graph
+        title: tsys1 UPS battery
+        entities:
+          - sensor.tsys1_ups_battery_charge
+        hours_to_show: 24
+      - type: entities
+        title: Plant automations
+        entities:
+          - automation.pfv_plant_high_temperature
+          - automation.pfv_plant_ups_on_battery
+          - automation.pfv_plant_ups_battery_low
+          - automation.pfv_plant_ups_communication_lost
+          - automation.pfv_plant_utility_power_restored
+      - type: markdown
+        content: >
+          **Server Room** — Proxmox hosts + Pis. Temperature sensors
+          populate here after the SNMP migration (#618). Minisplit
+          climate control lands with #614 (BTU loop Friday).