feat(overview): replace filter panel with add-filter builder and aging column

Swaps the unbounded vertical filter panel for a Polaris-style add-filter
builder (searchable grouped field picker, type-aware value control, applied
chips) and colour-codes the fees column with each member's period-scoped
unpaid-cycle count.

test/mv_web/member_live/index_column_manager_test.exs

@@ -23,9 +23,9 @@ defmodule MvWeb.MemberLive.IndexColumnManagerTest do
   test "column manager trigger sits alongside the filter controls", %{conn: conn} do
     {:ok, view, _html} = live(conn, ~p"/members")
 
-    # Both the filter panel trigger and the column-manager trigger render in the
-    # same toolbar.
-    assert has_element?(view, ~s(button[aria-label="Filter members"]))
+    # Both the add-filter builder trigger and the column-manager trigger render
+    # in the same toolbar.
+    assert has_element?(view, "[data-testid='add-filter-trigger']")
     assert has_element?(view, "button[aria-controls='field-visibility-menu']")
   end