fix(plant): review-gate fixes — level-based UPS re-polls, test hardening [#790 #344]

Adversarial review verdict FAIL -> addressed: runtime-low + shutdown
chain re-poll /5 min (edge-crossing could miss a page mid-outage);
suppression stamp set after notify; plan body names all 7 hosts
explicitly; test fixes (pipefail SIGPIPE, comment-only assertion).
Reviewer P1 'tripp_lite slug' refuted with live entity registry
evidence (entity_id derives from name; sensor exists, 8f48730 aligned).
On-box ha core check passed with the changed files.

Review thread: #3

packages/ups_shutdown.yaml

@@ -20,6 +20,10 @@
 # ============================================================================
 
 input_boolean:
+  # NOTE: `initial:` wins over restored state at EVERY HA start — a deploy
+  # mid-test silently reverts these to the safe defaults (armed OFF,
+  # dry-run ON). Safe direction, but re-arm after any restart during the
+  # supervised Sept 11-12 live test.
   pfv_ups_shutdown_armed:
     name: UPS shutdown chain ARMED
     description: Founder-level arm. ON + dry-run OFF = real shutdown dispatch.
@@ -61,26 +65,39 @@ automation:
           - sensor.tsys1_ups_battery_charge
           - sensor.tsys1_triplite_battery_charge
         below: 50
+      # 5-min level re-check — same edge-vs-level reasoning as the
+      # runtime-low alert: never let a threshold-crossing blip silence
+      # the plan page for an entire discharge.
+      - trigger: time_pattern
+        minutes: /5
     conditions:
       - condition: template
         value_template: >-
-          {% set sm = {
-               'sensor.pfv_ups_runtime_minutes': 'sensor.tsys1_ups_status',
-               'sensor.pfv_tripp_lite_runtime_minutes': 'sensor.tsys1_triplite_status',
-               'sensor.tsys1_ups_battery_charge': 'sensor.tsys1_ups_status',
-               'sensor.tsys1_triplite_battery_charge': 'sensor.tsys1_triplite_status'} %}
-          {{ states(sm.get(trigger.entity_id, 'sensor.tsys1_ups_status'))
-             not in ['Online', 'OL', 'unknown', 'unavailable'] }}
+          {% set ns = namespace(hit=false) %}
+          {% for rt, st in [
+               ('sensor.pfv_ups_runtime_minutes', 'sensor.tsys1_ups_status'),
+               ('sensor.pfv_tripp_lite_runtime_minutes', 'sensor.tsys1_triplite_status')] %}
+            {% if is_number(states(rt)) and (states(rt) | float) < 20
+                  and states(st) not in ['Online', 'OL', 'unknown', 'unavailable'] %}
+              {% set ns.hit = true %}
+            {% endif %}
+          {% endfor %}
+          {% for ch, st in [
+               ('sensor.tsys1_ups_battery_charge', 'sensor.tsys1_ups_status'),
+               ('sensor.tsys1_triplite_battery_charge', 'sensor.tsys1_triplite_status')] %}
+            {% if is_number(states(ch)) and (states(ch) | float) < 50
+                  and states(st) not in ['Online', 'OL', 'unknown', 'unavailable'] %}
+              {% set ns.hit = true %}
+            {% endif %}
+          {% endfor %}
+          {{ ns.hit }}
+      # Status 'unavailable' suppresses (anti-noise); UPS COMMS LOST covers
+      # that failure mode separately after 5 min.
       - condition: template
         value_template: >-
           {{ states('input_datetime.pfv_ups_shutdown_last_page') in ['unknown', 'unavailable', 'none']
              or as_timestamp(now()) - as_timestamp(states('input_datetime.pfv_ups_shutdown_last_page')) > 21600 }}
     actions:
-      - action: input_datetime.set_datetime
-        target:
-          entity_id: input_datetime.pfv_ups_shutdown_last_page
-        data:
-          datetime: "{{ now().strftime('%Y-%m-%d %H:%M:%S') }}"
       - variables:
           execute_mode: >-
             {{ is_state('input_boolean.pfv_ups_shutdown_armed', 'on')
@@ -97,7 +114,8 @@ automation:
                (ca LAST — signing path for everything above)
             5. pfv-bms VM 100 LAST of the VMs — the brain stays up until now
             6. Hypervisors: iDRAC graceful off tsys6/tsys7 (PowerEdge);
-               tsys1/3/4/5/9 idle out on UPS exhaustion (OptiPlex/Precision)
+               tsys1, tsys3, tsys4, tsys5, tsys9 idle out on UPS exhaustion
+               (OptiPlex/Precision, no BMC)
           mode_note: >-
             {{ 'MODE: EXECUTE (armed, live dispatch)' if execute_mode
                else 'MODE: DRY RUN (plan only — nothing will be shut down)' }}
@@ -122,3 +140,10 @@ automation:
         data:
           title: "{{ 'UPS SHUTDOWN EXECUTING' if execute_mode else 'UPS SHUTDOWN PLAN (dry run)' }}"
           message: "{{ plan }}"
+      # Suppression stamp set LAST — a failed notify must not suppress the
+      # next 5-min re-page cycle.
+      - action: input_datetime.set_datetime
+        target:
+          entity_id: input_datetime.pfv_ups_shutdown_last_page
+        data:
+          datetime: "{{ now().strftime('%Y-%m-%d %H:%M:%S') }}"