test: restriction page specs use the Berlin day like the page

Between 22:00 and 24:00 UTC the UTC day and the Berlin day differ, so
the specs failed at night.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Frontend/src/app/(app)/compliance/restrictions/page.spec.tsx

@@ -3,6 +3,7 @@ import { fireEvent, render, screen, waitFor, within } from "@testing-library/rea
 import userEvent from "@testing-library/user-event";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { fetchApiaries } from "@/lib/apiaries/api";
+import { berlinCalendarDay } from "@/lib/dates";
 import {
   endRestriction,
   fetchRestrictions,
@@ -115,7 +116,7 @@ describe("RestrictionsPage", () => {
     const field = within(dialog).getByLabelText(/Letzter Tag/) as HTMLInputElement;
     const yesterday = new Date(Date.now() - 36 * 60 * 60 * 1000).toISOString().slice(0, 10);
     expect(field.value >= "2020-10-01").toBe(true);
-    expect(field.value <= new Date().toISOString().slice(0, 10)).toBe(true);
+    expect(field.value <= berlinCalendarDay(new Date().toISOString())).toBe(true);
     expect(field.value >= yesterday).toBe(true);
   });
 
@@ -206,7 +207,9 @@ describe("RestrictionsPage", () => {
   });
 
   it("explains that a restriction that started today ends at the end of today at the earliest", async () => {
-    const today = new Date().toISOString().slice(0, 10);
+    // The page decides "today" by the Berlin calendar day; a UTC day would
+    // disagree between 22:00 and 24:00 UTC.
+    const today = berlinCalendarDay(new Date().toISOString());
     vi.mocked(fetchRestrictions).mockResolvedValue([row({ id: "r-1", startsOn: `${today}T00:00:00.000Z` })]);
     renderPage();
     const active = await screen.findByRole("region", { name: /Aktiv/ });