feat(chronik): rename route and heading to Aktivitäten

/chronik → /aktivitaeten; heading updated in all three locales.
Component folder (lib/components/chronik/) stays unchanged — internal
implementation detail, not user-facing.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/components/DashboardActivityFeed.svelte

@@ -56,7 +56,7 @@ function timestamp(item: ActivityFeedItemDTO): string {
 			{m.feed_caption()}
 		</h2>
 		<a
-			href="/chronik"
+			href="/aktivitaeten"
 			aria-label={m.feed_show_all()}
 			class="font-sans text-xs text-ink-3 transition-colors hover:text-ink">{m.feed_show_all()}</a
 		>

frontend/src/lib/components/DashboardActivityFeed.svelte.spec.ts

@@ -61,9 +61,9 @@ describe('DashboardActivityFeed', () => {
 		await expect.element(badge).not.toBeInTheDocument();
 	});
 
-	it('links the "show all" footer to /chronik, not /documents', async () => {
+	it('links the "show all" footer to /aktivitaeten, not /documents', async () => {
 		render(DashboardActivityFeed, { feed: [] });
 		const link = page.getByRole('link', { name: /alle anzeigen/i });
-		await expect.element(link).toHaveAttribute('href', '/chronik');
+		await expect.element(link).toHaveAttribute('href', '/aktivitaeten');
 	});
 });

frontend/src/lib/components/NotificationDropdown.svelte

@@ -128,7 +128,7 @@ let { notifications, onMarkRead, onMarkAllRead, onClose }: Props = $props();
 
 	<div class="border-t border-line px-4 py-2">
 		<a
-			href="/chronik"
+			href="/aktivitaeten"
 			onclick={onClose}
 			class="text-xs font-medium text-ink-2 transition-colors hover:text-ink"
 		>

frontend/src/lib/components/chronik/ChronikFuerDichBox.svelte

@@ -45,7 +45,7 @@ function href(n: NotificationItem): string {
 				{m.chronik_inbox_zero_title()}
 			</p>
 			<a
-				href="/chronik?filter=fuer-dich"
+				href="/aktivitaeten?filter=fuer-dich"
 				class="font-sans text-xs text-ink-3 underline decoration-accent underline-offset-2 transition-colors hover:text-ink"
 			>
 				{m.chronik_inbox_zero_link()}

frontend/src/lib/components/chronik/ChronikFuerDichBox.svelte.spec.ts

@@ -40,7 +40,7 @@ describe('ChronikFuerDichBox', () => {
 			onMarkRead: vi.fn(),
 			onMarkAllRead: vi.fn()
 		});
-		const link = document.querySelector('a[href="/chronik?filter=fuer-dich"]');
+		const link = document.querySelector('a[href="/aktivitaeten?filter=fuer-dich"]');
 		expect(link).not.toBeNull();
 	});
 

frontend/src/routes/aktivitaeten/page.server.spec.ts

@@ -10,7 +10,7 @@ vi.mock('$lib/api.server', () => ({
 }));
 
 function buildUrl(search = ''): URL {
-	return new URL(`http://localhost/chronik${search}`);
+	return new URL(`http://localhost/aktivitaeten${search}`);
 }
 
 function mockSuccess() {
@@ -26,7 +26,7 @@ beforeEach(() => {
 	vi.clearAllMocks();
 });
 
-describe('chronik/load — core', () => {
+describe('aktivitaeten/load — core', () => {
 	it('requests only unread notifications for Für-dich', async () => {
 		mockSuccess();
 		await load({ fetch, url: buildUrl() } as never);
@@ -78,7 +78,7 @@ describe('chronik/load — core', () => {
 	});
 });
 
-describe('chronik/load — kinds param per filter', () => {
+describe('aktivitaeten/load — kinds param per filter', () => {
 	it('omits kinds for filter=alle (server defaults to ROLLUP_ELIGIBLE)', async () => {
 		mockSuccess();
 		await load({ fetch, url: buildUrl() } as never);

frontend/src/routes/profile/+page.svelte

@@ -102,7 +102,10 @@ const hasEmail = $derived(!!data.user?.email);
 		</form>
 
 		<div class="mt-4 border-t border-line pt-4">
-			<a href="/chronik" class="text-sm font-medium text-ink-2 transition-colors hover:text-ink">
+			<a
+				href="/aktivitaeten"
+				class="text-sm font-medium text-ink-2 transition-colors hover:text-ink"
+			>
 				{m.notification_history_view_link()}
 			</a>
 		</div>