feat(overview): rework filter builder with editable chips and native date ranges

Editable filter chips, uniformly-sized value controls, working field-picker
search, and native date-range inputs with relative presets in place of the
vendored calendar — native inputs give year-jump, manual entry and keyboard
accessibility for free.

test/mv_web/member_live/index_payment_period_test.exs

@@ -75,6 +75,20 @@ defmodule MvWeb.MemberLive.IndexPaymentPeriodTest do
       tip = PaymentAging.period_tooltip(%{from: nil, to: nil})
       assert is_binary(tip) and tip =~ "outstanding"
     end
+
+    test "explains that the values refer to the filtered contribution period" do
+      # The header badge falls back to a plain "filtered" label whenever no
+      # compact short code fits (arbitrary or open-ended ranges); its tooltip
+      # must spell out what "filtered" means, not just repeat the range.
+      for period <- [
+            %{from: nil, to: nil},
+            %{from: ~D[2026-02-03], to: ~D[2026-08-17]},
+            %{from: ~D[2026-01-01], to: nil}
+          ] do
+        tip = PaymentAging.period_tooltip(period)
+        assert tip =~ "refer to the filtered contribution period"
+      end
+    end
   end
 
   describe "payment-count filter codec" do