Add long press office button to toggle AC automation

Hooks up the previously unused long press on the office button
to toggle input_boolean.ac_automation_enabled.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

automations.yaml

@@ -456,6 +456,22 @@
       entity_id: button.archstation
     data: {}
   mode: single
+- id: '1779900705573'
+  alias: Toggle AC Automation
+  description: Long press office button to toggle AC automation
+  triggers:
+  - device_id: 8e2942f6079c1ff8086c3d8cb427db0c
+    domain: zha
+    type: remote_button_long_press
+    subtype: button
+    trigger: device
+  conditions: []
+  actions:
+  - action: input_boolean.toggle
+    target:
+      entity_id: input_boolean.ac_automation_enabled
+    data: {}
+  mode: single
 - id: '1779900796574'
   alias: Schreibtischlampe
   description: ''