feat(geschichten): make Geschichte panel rows fully clickable

The story rows on the person detail page now match the
PersonDocumentList pattern: the entire row is a single anchor with a
hover background, and the title gets group-hover:underline. Author,
date, and body excerpt are all part of the same clickable area, so
the touch target matches the visual rhythm of the document panels
above.

frontend/src/lib/components/GeschichtenCard.svelte

@@ -53,22 +53,24 @@ function authorName(g: Geschichte): string {
 			{/if}
 		</header>
 
-		<ul class="flex flex-col gap-4">
+		<ul class="-mx-2">
 			{#each visible as g (g.id)}
-				<li class="flex flex-col gap-1 border-b border-line pb-3 last:border-0 last:pb-0">
+				<li>
 					<a
 						href="/geschichten/{g.id}"
-						class="font-serif text-base font-bold text-ink hover:underline"
+						class="group flex flex-col gap-1 border-b border-line px-2 py-3 transition-colors last:border-b-0 hover:bg-muted"
 					>
-						{g.title}
+						<span class="font-serif text-base font-bold text-ink group-hover:underline">
+							{g.title}
+						</span>
+						<span class="font-sans text-xs text-ink-3">
+							{authorName(g)}
+							{#if formatPublishedDate(g)}· {formatPublishedDate(g)}{/if}
+						</span>
+						{#if g.body}
+							<span class="font-serif text-sm text-ink-2">{plainExcerpt(g.body, 80)}</span>
+						{/if}
 					</a>
-					<p class="font-sans text-xs text-ink-3">
-						{authorName(g)}
-						{#if formatPublishedDate(g)}· {formatPublishedDate(g)}{/if}
-					</p>
-					{#if g.body}
-						<p class="font-serif text-sm text-ink-2">{plainExcerpt(g.body, 80)}</p>
-					{/if}
 				</li>
 			{/each}
 		</ul>

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

@@ -51,9 +51,29 @@ describe('GeschichtenCard', () => {
 			canWrite: false
 		});
 		await expect.element(page.getByText('Geschichten')).toBeInTheDocument();
-		await expect
-			.element(page.getByRole('link', { name: 'Erinnerung an Franz' }))
-			.toBeInTheDocument();
+		// The whole row is one link to the story; matching on the title text via
+		// a partial regex tolerates trailing author/date metadata in the
+		// accessible name.
+		const link = await page
+			.getByRole('link', { name: /Erinnerung an Franz/ })
+			.first()
+			.element();
+		expect(link.getAttribute('href')).toBe('/geschichten/g1');
+	});
+
+	it('makes the entire story row a single clickable link', async () => {
+		render(GeschichtenCard, {
+			geschichten: [makeStory('g1', 'A title', '<p>Some body excerpt text</p>')],
+			personId: 'p1',
+			personName: 'Franz',
+			canWrite: false
+		});
+		// The body-excerpt text is inside the same <a> as the title.
+		const links = await page.getByRole('link', { name: /A title/ }).all();
+		expect(links.length).toBeGreaterThan(0);
+		const linkEl = await links[0].element();
+		expect(linkEl.tagName).toBe('A');
+		expect(linkEl.textContent).toContain('Some body excerpt text');
 	});
 
 	it('hides the "+ Geschichte schreiben" link when canWrite is false', async () => {