feat: add member-user link in member view and user view

lib/mv_web/live/member_live/show.ex

@@ -37,6 +37,19 @@ defmodule MvWeb.MemberLive.Show do
         <:item title={gettext("Street")}>{@member.street}</:item>
         <:item title={gettext("House Number")}>{@member.house_number}</:item>
         <:item title={gettext("Postal Code")}>{@member.postal_code}</:item>
+        <:item title={gettext("Linked User")}>
+          <%= if @member.user do %>
+            <.link
+              navigate={~p"/users/#{@member.user}"}
+              class="text-blue-600 hover:text-blue-800 underline"
+            >
+              <.icon name="hero-user" class="h-4 w-4 inline mr-1" />
+              {@member.user.email}
+            </.link>
+          <% else %>
+            <span class="text-gray-500 italic">{gettext("No user linked")}</span>
+          <% end %>
+        </:item>
       </.list>
 
       <h3 class="mt-8 mb-2 text-lg font-semibold">{gettext("Custom Properties")}</h3>
@@ -67,7 +80,7 @@ defmodule MvWeb.MemberLive.Show do
     query =
       Mv.Membership.Member
       |> filter(id == ^id)
-      |> load(properties: [:property_type])
+      |> load([:user, properties: [:property_type]])
 
     member = Ash.read_one!(query)