fix: display count sensor values as integers instead of floats

Connection counts (IPv4/IPv6, DHCP leases) were showing as floats
(e.g. 1270.0) in executor output, change detection messages, and
chart tooltips/axes. Now displayed as integers everywhere.

assets/js/app.ts

@@ -203,6 +203,9 @@ const SensorChart: SensorChartHook = {
               if (unit === 'bps') {
                 return formatBps(value)
               }
+              if (unit === '') {
+                return Math.round(value)
+              }
               return value + unit
             }
           },
@@ -233,6 +236,9 @@ const SensorChart: SensorChartHook = {
             if (unit === 'bps') {
               return formatBps(value)
             }
+            if (unit === '') {
+              return Math.round(value)
+            }
             return value + unit
           }
         },
@@ -337,6 +343,9 @@ const SensorChart: SensorChartHook = {
                 if (unit === 'bps') {
                   return context.dataset.label + ': ' + formatBps(context.parsed.y)
                 }
+                if (unit === '') {
+                  return context.dataset.label + ': ' + Math.round(context.parsed.y)
+                }
                 return context.dataset.label + ': ' + context.parsed.y.toFixed(1) + unit
               }
             }

lib/towerops/monitoring/executors/snmp_sensor_executor.ex

@@ -159,6 +159,10 @@ defmodule Towerops.Monitoring.Executors.SnmpSensorExecutor do
     "#{round(value)}#{unit || " RPM"}"
   end
 
+  defp format_value(value, "count", _unit) do
+    "#{trunc(value)}"
+  end
+
   defp format_value(value, sensor_type, unit) do
     {precision, default_unit} = Map.get(@sensor_formats, sensor_type, {2, ""})
     "#{Float.round(value, precision)}#{unit || default_unit}"

lib/towerops/snmp/sensor_change_detector.ex

@@ -283,6 +283,10 @@ defmodule Towerops.Snmp.SensorChangeDetector do
     end
   end
 
+  defp format_sensor_value(value, "") when is_number(value) do
+    "#{trunc(value)}"
+  end
+
   defp format_sensor_value(value, unit) when is_number(value) do
     "#{Float.round(value / 1.0, 1)}#{unit}"
   end

test/towerops/monitoring/executors/snmp_sensor_executor_test.exs

@@ -212,6 +212,45 @@ defmodule Towerops.Monitoring.Executors.SnmpSensorExecutorTest do
       assert error_msg =~ "Sensor not found"
     end
 
+    test "formats count sensor output as integer", %{device: device, snmp_device: snmp_device} do
+      sensor =
+        %Sensor{}
+        |> Sensor.changeset(%{
+          snmp_device_id: snmp_device.id,
+          sensor_descr: "Total number of ipv4 connections",
+          sensor_type: "count",
+          sensor_index: "mtxrCtIP4Entries.0",
+          sensor_oid: ".1.3.6.1.4.1.14988.1.1.22.1.2.0",
+          sensor_unit: "",
+          sensor_divisor: 1
+        })
+        |> Repo.insert!()
+
+      {:ok, check} =
+        Monitoring.create_check(%{
+          organization_id: device.organization_id,
+          device_id: device.id,
+          name: "IPv4 Connections",
+          check_type: "snmp_sensor",
+          source_type: "auto_discovery",
+          source_id: sensor.id,
+          config: %{
+            "sensor_type" => "count",
+            "sensor_oid" => ".1.3.6.1.4.1.14988.1.1.22.1.2.0",
+            "sensor_unit" => ""
+          }
+        })
+
+      expect(SnmpMock, :get, fn _ip, _oid, _opts ->
+        {:ok, {:integer, 1270}}
+      end)
+
+      assert {:ok, response} = SnmpSensorExecutor.execute(check)
+      assert response.value == 1270.0
+      assert response.output =~ "1270"
+      refute response.output =~ "1270.0"
+    end
+
     test "returns error when SNMP fails", %{device: device, snmp_device: snmp_device} do
       sensor =
         %Sensor{}

test/towerops/snmp/sensor_change_detector_test.exs

@@ -276,6 +276,32 @@ defmodule Towerops.Snmp.SensorChangeDetectorTest do
       assert "sensor_value_changed" in event_types
     end
 
+    test "formats count sensor values as integers in event messages", %{
+      device: device,
+      snmp_device: snmp_device
+    } do
+      sensor =
+        create_sensor(snmp_device, %{
+          sensor_type: "count",
+          sensor_descr: "IPv4 Connections",
+          sensor_unit: "",
+          last_value: 1000.0
+        })
+
+      timestamp = DateTime.utc_now()
+
+      Phoenix.PubSub.subscribe(Towerops.PubSub, "device:#{device.id}")
+
+      SensorChangeDetector.detect_and_broadcast(sensor, 1270.0, timestamp)
+
+      assert_receive {:device_event, event}
+      assert event.event_type == "sensor_value_changed"
+      assert event.message =~ "1000"
+      refute event.message =~ "1000.0"
+      assert event.message =~ "1270"
+      refute event.message =~ "1270.0"
+    end
+
     test "broadcasts to both device and global event topics", %{
       device: device,
       snmp_device: snmp_device