feix: optimize queries for groups

test/mv_web/live/group_live/index_test.exs

@@ -184,7 +184,9 @@ defmodule MvWeb.GroupLive.IndexTest do
       assert html =~ "2" or html =~ gettext("Members") or html =~ "Mitglieder"
 
       # Log actual query count for monitoring
-      IO.puts("\n[PERF] GroupLive.Index 'member count is loaded efficiently': #{final_count} queries")
+      IO.puts(
+        "\n[PERF] GroupLive.Index 'member count is loaded efficiently': #{final_count} queries"
+      )
 
       # Verify query count is reasonable (member count should be calculated efficiently)
       # Expected: 1 query for groups + 1 batch query for member counts + LiveView setup queries

test/mv_web/live/group_live/show_test.exs

@@ -257,7 +257,9 @@ defmodule MvWeb.GroupLive.ShowTest do
       end)
 
       # Log actual query count for monitoring
-      IO.puts("\n[PERF] GroupLive.Show 'member list is loaded efficiently': #{final_count} queries")
+      IO.puts(
+        "\n[PERF] GroupLive.Show 'member list is loaded efficiently': #{final_count} queries"
+      )
 
       # Verify query count is reasonable (should avoid N+1 queries)
       # Expected: 1 query for group lookup + 1 query for members (with preload) + member_count aggregate