manatee: Alert on kitchen water leak

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

hosts/manatee/modules/home-assistant/default.nix

@@ -39,6 +39,20 @@ alert:
     notifiers:
       - mobile_app_pixel_9_pro
 
+  kitchen_water_leak:
+    name: Water leak detected in the kitchen
+    done_message: Kitchen is dry again
+    entity_id: binary_sensor.vattenlackage_1_flood
+    state: "on"
+    repeat: 5
+    notifiers:
+      - mobile_app_pixel_9_pro
+    data:
+      ttl: 0
+      priority: high
+      # Plays on the alarm stream so it sounds even when the phone is silenced
+      channel: alarm_stream
+
 ${cfg.extraConfig}'';
 
   btResetScript = pkgs.writeShellScript "bt-reset" ''