feat: redirect to device page after triggering rediscovery

When clicking 'Rediscover Device', navigate to the device details page
where the user can see live updates as discovery progresses.

The device show page already subscribes to PubSub discovery events and
will automatically refresh when discovery completes, showing updated
manufacturer, model, sensors, and interfaces.

lib/towerops_web/live/device_live/form.ex

@@ -199,7 +199,11 @@ defmodule ToweropsWeb.DeviceLive.Form do
       # Enqueue discovery job
       enqueue_discovery(device.id)
 
-      {:noreply, put_flash(socket, :info, "Discovery started...")}
+      # Navigate to device show page where live updates will appear
+      {:noreply,
+       socket
+       |> put_flash(:info, "Discovery started...")
+       |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/devices/#{device.id}")}
     else
       {:noreply, put_flash(socket, :error, "SNMP is not enabled for this device")}
     end