fix(a11y): Name der Glocke enthält die sichtbare Zahl (Lighthouse label-content-name-mismatch)

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

ApiCore-Frontend/src/components/notification-bell.spec.tsx

@@ -60,7 +60,7 @@ describe("NotificationBell", () => {
       notification({ id: "n-2", message: "Ohne Ziel", relatedType: "Colony", relatedId: "c-9" }),
     ]);
     renderBell();
-    await userEvent.click(await screen.findByRole("button", { name: "Benachrichtigungen" }));
+    await userEvent.click(await screen.findByRole("button", { name: /^Benachrichtigungen/ }));
 
     const linked = await screen.findByText("Wartezeit-Konflikt bei B3");
     expect(linked.closest("a")).toHaveAttribute("href", "/harvests/h-1");
@@ -76,7 +76,7 @@ describe("NotificationBell", () => {
       notification({ id: "n-2", message: "Schema", link: "https://evil.example" }),
     ]);
     renderBell();
-    await userEvent.click(await screen.findByRole("button", { name: "Benachrichtigungen" }));
+    await userEvent.click(await screen.findByRole("button", { name: /^Benachrichtigungen/ }));
     expect((await screen.findByText("Wartezeit-Konflikt bei B3")).closest("a")).toBeNull();
     expect(screen.getByText("Schema").closest("a")).toBeNull();
   });
@@ -84,7 +84,7 @@ describe("NotificationBell", () => {
   it("hides „Alle gelesen“ when nothing is unread and names the category in words", async () => {
     vi.mocked(fetchNotifications).mockResolvedValue([notification({ read: true })]);
     renderBell();
-    await userEvent.click(await screen.findByRole("button", { name: "Benachrichtigungen" }));
+    await userEvent.click(await screen.findByRole("button", { name: /^Benachrichtigungen/ }));
     expect(await screen.findByText("Wartezeit")).toBeInTheDocument();
     expect(screen.queryByRole("menuitem", { name: /Alle gelesen/ })).not.toBeInTheDocument();
   });
@@ -120,10 +120,12 @@ describe("NotificationBell", () => {
     expect(vi.mocked(toast.error).mock.calls[0][1]).toEqual({ id: "notification-read-error" });
   });
 
-  it("the badge is announced with the unread count, the digit is hidden from readers", async () => {
+  it("the button name carries the visible badge text, the digit itself is hidden from readers", async () => {
     vi.mocked(fetchNotifications).mockResolvedValue([notification({}), notification({ id: "n-2" })]);
     renderBell();
-    expect(await screen.findByText("2 ungelesene Benachrichtigungen")).toHaveClass("sr-only");
+    expect(
+      await screen.findByRole("button", { name: "Benachrichtigungen, 2 ungelesen" }),
+    ).toBeInTheDocument();
     expect(screen.getByText("2", { selector: "[aria-hidden='true']" })).toBeInTheDocument();
   });