feat(automations): class-threshold temp alerts + UPS runtime-low [#344]

NVMe 150F, DIMM 140F, PCH 160F triggers on the new storage/mem/chipset
sensors (104F general threshold retained for air/CPU); UPS runtime-low
alert (<10 min while not Online) guards the #455 shutdown window.

https://projects.knownelement.com/issues/344

automations.yaml

@@ -62,6 +62,27 @@
       message: '{{ trigger.entity_id }} unreachable for 5 minutes (nut-server or network
         path down; tsys1 also hosts pfv-bms itself).'
   mode: single
+- id: pfv_plant_ups_runtime_low
+  alias: PFV plant - UPS runtime low while on battery
+  description: On battery and runtime burned below 10 min — the graceful
+    shutdown window is closing. VMs before hypervisors per #455.
+  triggers:
+  - trigger: numeric_state
+    entity_id: sensor.pfv_ups_runtime_minutes
+    below: 10
+  conditions:
+  - condition: template
+    value_template: "{{ states('sensor.tsys1_ups_status') not in ['Online', 'unknown', 'unavailable'] }}"
+  actions:
+  - action: notify.send_message
+    target:
+      entity_id:
+      - notify.ultix_sidecar_new
+      - notify.allthes_ipad
+    data:
+      title: UPS RUNTIME LOW
+      message: On battery {{ states('sensor.pfv_ups_runtime_minutes') }} min left — start graceful shutdown now (#455 ordering).
+  mode: single
 - id: pfv_plant_ups_power_restored
   alias: PFV plant - utility power restored
   triggers:
@@ -86,6 +107,23 @@
 - id: pfv_plant_high_temperature
   alias: PFV plant - high temperature
   triggers:
+  - trigger: numeric_state
+    entity_id:
+    - sensor.pfv_tsys3_nvme_temperature
+    - sensor.pfv_tsys5_nvme_temperature
+    above: 150
+  - trigger: numeric_state
+    entity_id:
+    - sensor.pfv_tsys4_dimm_18_temperature
+    - sensor.pfv_tsys4_dimm_19_temperature
+    - sensor.pfv_tsys4_dimm_1a_temperature
+    - sensor.pfv_tsys4_dimm_1b_temperature
+    above: 140
+  - trigger: numeric_state
+    entity_id:
+    - sensor.pfv_tsys3_pch_temperature
+    - sensor.pfv_tsys9_pch_temperature
+    above: 160
   - trigger: numeric_state
     entity_id:
     - sensor.pfv_artroom_temperature
@@ -116,8 +154,8 @@
       - notify.allthes_ipad
     data:
       title: HIGH TEMPERATURE
-      message: '{{ trigger.entity_id }} is {{ states(trigger.entity_id) }}°F (threshold
+      message: '{{ trigger.entity_id }} is {{ states(trigger.entity_id) }}°F (class
-        104°F). Check cooling/airflow.'
+        threshold exceeded). Check cooling/airflow.'
   mode: single
 - id: pfv_plant_sensor_watchdog
   alias: PFV plant - sensor watchdog (unavailable sensors)