style: consistent back button and some translations

lib/mv_web/live/group_live/form.ex

@@ -79,12 +79,14 @@ defmodule MvWeb.GroupLive.Form do
     <Layouts.app flash={@flash} current_user={@current_user}>
       <.form for={@form} id="group-form" phx-change="validate" phx-submit="save">
         <.header>
-          {@page_title}
-          <:actions>
+          <:leading>
             <.button navigate={return_path(@return_to, @group)} variant="neutral">
               <.icon name="hero-arrow-left" class="size-4" />
               {gettext("Back")}
             </.button>
+          </:leading>
+          {@page_title}
+          <:actions>
             <.button phx-disable-with={gettext("Saving...")} variant="primary" type="submit">
               {gettext("Save")}
             </.button>

lib/mv_web/live/group_live/show.ex

@@ -50,7 +50,7 @@ defmodule MvWeb.GroupLive.Show do
     end
   end
 
-  defp load_group_by_slug(socket, slug, actor, params \\ %{}) do
+  defp load_group_by_slug(socket, slug, actor, params) do
     # Load group with members and member_count
     # Using explicit load ensures efficient preloading of members relationship
     require Ash.Query
@@ -92,8 +92,7 @@ defmodule MvWeb.GroupLive.Show do
     ~H"""
     <Layouts.app flash={@flash} current_user={@current_user}>
       <.header>
-        {@group.name}
-        <:actions>
+        <:leading>
           <.button
             navigate={~p"/groups"}
             variant="neutral"
@@ -102,13 +101,16 @@ defmodule MvWeb.GroupLive.Show do
             <.icon name="hero-arrow-left" class="size-4" />
             {gettext("Back")}
           </.button>
+        </:leading>
+        {@group.name}
+        <:actions>
           <%= if can?(@current_user, :update, @group) do %>
             <.button
               variant="primary"
               navigate={~p"/groups/#{@group.slug}/edit"}
               data-testid="group-show-edit-btn"
             >
-              {gettext("Edit group")}
+              <.icon name="hero-pencil-square" /> {gettext("Edit group")}
             </.button>
           <% end %>
         </:actions>