feat(membership-fee): index fee cycles by member, status and end date

priv/repo/migrations/20260706191440_add_membership_fee_cycles_status_end_index.exs

@@ -0,0 +1,22 @@
+defmodule Mv.Repo.Migrations.AddMembershipFeeCyclesStatusEndIndex do
+  @moduledoc """
+  Adds a composite index on membership_fee_cycles(member_id, status, cycle_end)
+  to serve the period-scoped unpaid-cycle count on the member overview.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`.
+  """
+
+  use Ecto.Migration
+
+  def up do
+    create index(:membership_fee_cycles, [:member_id, :status, :cycle_end],
+             name: "membership_fee_cycles_member_status_end_index"
+           )
+  end
+
+  def down do
+    drop_if_exists index(:membership_fee_cycles, [:member_id, :status, :cycle_end],
+                     name: "membership_fee_cycles_member_status_end_index"
+                   )
+  end
+end