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_date_range_test.exs

@@ -0,0 +1,74 @@
+defmodule MvWeb.MemberLive.IndexDateRangeTest do
+  @moduledoc """
+  §1.25 / §3.12 (native-first) — the date-range value control combines the
+  relative presets with a separate "Eigener Zeitraum" (custom range) paragraph
+  holding two native `<input type="date">` fields (Von/Bis). cally is removed.
+
+  Picking a preset commits a concrete range; typing into the native Von/Bis
+  inputs commits the custom range through the shared date-filter dispatch.
+  """
+  use MvWeb.ConnCase, async: false
+
+  import Phoenix.LiveViewTest
+
+  setup %{conn: conn} do
+    actor = Mv.Helpers.SystemActor.get_system_actor()
+
+    {:ok, _member} =
+      Mv.Membership.create_member(
+        %{first_name: "Range", last_name: "Member", email: "range@example.com"},
+        actor: actor
+      )
+
+    %{conn: conn_with_oidc_user(conn)}
+  end
+
+  test "the join-date control shows presets and native Von/Bis date inputs", %{conn: conn} do
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    pick_field(view, "join_date")
+
+    assert has_element?(view, "[data-testid='value-control-date-range']")
+    assert has_element?(view, "[data-testid='date-presets']")
+    # Separate "Eigener Zeitraum" paragraph with two native date inputs side by side.
+    assert has_element?(view, "[data-testid='custom-range']")
+    assert has_element?(view, "[data-testid='custom-range'] input[type='date'][name='jd_from']")
+    assert has_element?(view, "[data-testid='custom-range'] input[type='date'][name='jd_to']")
+  end
+
+  test "cally is fully removed from the date-range control", %{conn: conn} do
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    pick_field(view, "join_date")
+
+    refute has_element?(view, "[data-testid='date-range-cally']")
+    refute has_element?(view, "calendar-range")
+    refute has_element?(view, "[phx-hook='DateRangeCally']")
+  end
+
+  test "picking a preset commits a concrete range to the URL", %{conn: conn} do
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    pick_field(view, "join_date")
+    view |> element("[data-testid='date-preset-this_year']") |> render_click()
+
+    path = assert_patch(view)
+    today = Date.utc_today()
+    assert path =~ "jd_from=#{today.year}-01-01"
+    assert path =~ "jd_to=#{Date.to_iso8601(today)}"
+  end
+
+  test "typing a native custom range commits it to the URL", %{conn: conn} do
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    pick_field(view, "join_date")
+
+    view
+    |> element("[data-testid='value-control-date-range']")
+    |> render_change(%{"jd_from" => "2024-03-01", "jd_to" => "2024-03-31"})
+
+    path = assert_patch(view)
+    assert path =~ "jd_from=2024-03-01"
+    assert path =~ "jd_to=2024-03-31"
+  end
+end