feat(documents): rebalance list row — summary + archive chips, restored sender/receiver

Refill the columns that went visually empty after the previous dedup
commit (`fc0fc57`):

- Middle column gains the document `summary` (line-clamp-2, italic,
  with `summaryOffsets` highlighting — the backend already populates
  the offsets, the frontend just wasn't rendering them) and a row of
  thin neutral chips for `archiveBox`, `archiveFolder`, and `location`
  (~99% of docs in the corpus carry these). Chips are desktop-only
  and skip empty values.
- Right column restores `VON sender` and `AN receivers`, now with
  `<mark>` highlighting that the previous right-column copy lacked,
  so search matches stay visible there.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/lib/components/DocumentRow.svelte

@@ -20,6 +20,15 @@ const snippet = $derived(item.matchData?.transcriptionSnippet ?? null);
 const snippetSegments = $derived(
 	snippet ? applyOffsets(snippet, item.matchData?.snippetOffsets ?? []) : null
 );
+const summary = $derived(doc.summary?.trim() ? doc.summary : null);
+const summarySegments = $derived(
+	summary ? applyOffsets(summary, item.matchData?.summaryOffsets ?? []) : null
+);
+const archiveChips = $derived(
+	[doc.archiveBox, doc.archiveFolder, doc.location].filter(
+		(c): c is string => !!c && c.trim().length > 0
+	)
+);
 const senderMatched = $derived(item.matchData?.senderMatched ?? false);
 const matchedReceiverIds = $derived(new Set(item.matchData?.matchedReceiverIds ?? []));
 const matchedTagIds = $derived(new Set(item.matchData?.matchedTagIds ?? []));
@@ -77,46 +86,36 @@ function safeTagColor(color: string | null | undefined): string {
 					</p>
 				{/if}
 
-				<!-- Sender / receivers — desktop only, stacked -->
-				<div class="mt-2 mb-2 hidden flex-col gap-1 font-sans text-xs text-ink-2 sm:flex">
-					<div>
-						<span class="font-bold tracking-wide text-ink-3 uppercase">{m.docs_list_from()}</span>
-						<span class="ml-1">
-							{#if doc.sender}
-								{#if senderMatched}
-									<mark
-										class="bg-transparent text-inherit underline decoration-brand-navy decoration-2 underline-offset-2"
-										>{doc.sender.displayName}</mark
-									>
-								{:else}
-									{doc.sender.displayName}
-								{/if}
+				<!-- Summary excerpt — only when populated -->
+				{#if summarySegments}
+					<p
+						data-testid="doc-summary"
+						class="mt-1 mb-2 line-clamp-2 font-serif text-sm text-ink-2 italic"
+					>
+						{#each summarySegments as seg, i (i)}
+							{#if seg.highlight}
+								<mark
+									class="bg-transparent text-inherit underline decoration-brand-navy decoration-2 underline-offset-2"
+									>{seg.text}</mark
+								>
 							{:else}
-								<span class="text-ink-3 italic">{m.docs_list_unknown()}</span>
+								{seg.text}
 							{/if}
-						</span>
+						{/each}
+					</p>
+				{/if}
+
+				<!-- Archive metadata chips — desktop only -->
+				{#if archiveChips.length > 0}
+					<div class="mt-2 hidden flex-wrap items-center gap-1.5 sm:flex">
+						{#each archiveChips as chip, i (i)}
+							<span
+								class="rounded border border-line px-1.5 py-0.5 font-sans text-[10px] tracking-widest text-ink-3 uppercase"
+								>{chip}</span
+							>
+						{/each}
 					</div>
-					<div>
-						<span class="font-bold tracking-wide text-ink-3 uppercase">{m.docs_list_to()}</span>
-						<span class="ml-1">
-							{#if doc.receivers && doc.receivers.length > 0}
-								{#each doc.receivers as receiver, i (receiver.id)}
-									{#if i > 0}<span>, </span>{/if}
-									{#if matchedReceiverIds.has(receiver.id)}
-										<mark
-											class="bg-transparent text-inherit underline decoration-brand-navy decoration-2 underline-offset-2"
-											>{receiver.displayName}</mark
-										>
-									{:else}
-										{receiver.displayName}
-									{/if}
-								{/each}
-							{:else}
-								<span class="text-ink-3 italic">{m.docs_list_unknown()}</span>
-							{/if}
-						</span>
-					</div>
-				</div>
+				{/if}
 
 				<!-- Tags -->
 				{#if doc.tags && doc.tags.length > 0}
@@ -158,6 +157,43 @@ function safeTagColor(color: string | null | undefined): string {
 				<div>
 					{doc.documentDate ? formatDate(doc.documentDate) : '—'}
 				</div>
+				<div>
+					<span class="font-bold tracking-wide text-ink-3 uppercase">{m.docs_list_from()}</span>
+					<span class="ml-1">
+						{#if doc.sender}
+							{#if senderMatched}
+								<mark
+									class="bg-transparent text-inherit underline decoration-brand-navy decoration-2 underline-offset-2"
+									>{doc.sender.displayName}</mark
+								>
+							{:else}
+								{doc.sender.displayName}
+							{/if}
+						{:else}
+							<span class="text-ink-3 italic">{m.docs_list_unknown()}</span>
+						{/if}
+					</span>
+				</div>
+				<div>
+					<span class="font-bold tracking-wide text-ink-3 uppercase">{m.docs_list_to()}</span>
+					<span class="ml-1">
+						{#if doc.receivers && doc.receivers.length > 0}
+							{#each doc.receivers as receiver, i (receiver.id)}
+								{#if i > 0}<span>, </span>{/if}
+								{#if matchedReceiverIds.has(receiver.id)}
+									<mark
+										class="bg-transparent text-inherit underline decoration-brand-navy decoration-2 underline-offset-2"
+										>{receiver.displayName}</mark
+									>
+								{:else}
+									{receiver.displayName}
+								{/if}
+							{/each}
+						{:else}
+							<span class="text-ink-3 italic">{m.docs_list_unknown()}</span>
+						{/if}
+					</span>
+				</div>
 				<div class="flex items-start gap-2">
 					<ProgressRing percentage={item.completionPercentage} />
 					<div class="flex h-9 items-center">

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

@@ -118,28 +118,99 @@ describe('DocumentRow – sender', () => {
 		await expect.element(unknownElements.first()).toBeInTheDocument();
 	});
 
-	it('renders the sender display name only once across the row', async () => {
+	it('highlights the sender when senderMatched is true', async () => {
 		const item = makeItem({
 			document: {
 				...makeItem().document,
 				sender: { id: 's1', displayName: 'Großmutter Maria' }
+			},
+			matchData: {
+				...makeItem().matchData,
+				senderMatched: true
 			}
 		});
 		render(DocumentRow, { item });
-		const matches = await page.getByText('Großmutter Maria').all();
-		expect(matches.length).toBe(1);
+		const mark = page.getByRole('mark').first();
+		await expect.element(mark).toHaveTextContent('Großmutter Maria');
 	});
 
-	it('renders each receiver display name only once across the row', async () => {
+	it('highlights a receiver when matchedReceiverIds includes its id', async () => {
 		const item = makeItem({
 			document: {
 				...makeItem().document,
 				receivers: [{ id: 'r1', displayName: 'Onkel Karl' }]
+			},
+			matchData: {
+				...makeItem().matchData,
+				matchedReceiverIds: ['r1']
 			}
 		});
 		render(DocumentRow, { item });
-		const matches = await page.getByText('Onkel Karl').all();
-		expect(matches.length).toBe(1);
+		const mark = page.getByRole('mark').first();
+		await expect.element(mark).toHaveTextContent('Onkel Karl');
+	});
+});
+
+// ─── Summary ─────────────────────────────────────────────────────────────────
+
+describe('DocumentRow – summary', () => {
+	it('renders the document summary when present', async () => {
+		const item = makeItem({
+			document: {
+				...makeItem().document,
+				summary: 'Brief von Eugenie über die Heimreise aus dem Süden.'
+			}
+		});
+		render(DocumentRow, { item });
+		await expect
+			.element(page.getByTestId('doc-summary'))
+			.toHaveTextContent('Brief von Eugenie über die Heimreise aus dem Süden.');
+	});
+
+	it('does not render the summary block when summary is empty', async () => {
+		render(DocumentRow, { item: makeItem() });
+		await expect.element(page.getByTestId('doc-summary')).not.toBeInTheDocument();
+	});
+
+	it('applies summary search-match highlight via summaryOffsets', async () => {
+		const item = makeItem({
+			document: { ...makeItem().document, summary: 'Brief über Menton' },
+			matchData: {
+				...makeItem().matchData,
+				summaryOffsets: [{ start: 11, length: 6 }]
+			}
+		});
+		render(DocumentRow, { item });
+		const mark = page.getByRole('mark').first();
+		await expect.element(mark).toHaveTextContent('Menton');
+	});
+});
+
+// ─── Archive chips ───────────────────────────────────────────────────────────
+
+describe('DocumentRow – archive chips', () => {
+	it('renders the archive box chip when set', async () => {
+		const item = makeItem({
+			document: { ...makeItem().document, archiveBox: 'K3' }
+		});
+		render(DocumentRow, { item });
+		await expect.element(page.getByText('K3')).toBeInTheDocument();
+	});
+
+	it('renders the archive folder chip when set', async () => {
+		const item = makeItem({
+			document: { ...makeItem().document, archiveFolder: 'Mappe A' }
+		});
+		render(DocumentRow, { item });
+		await expect.element(page.getByText('Mappe A')).toBeInTheDocument();
+	});
+
+	it('renders the location chip when meta_location is set', async () => {
+		const item = makeItem({
+			document: { ...makeItem().document, location: 'Berlin' }
+		});
+		render(DocumentRow, { item });
+		await expect.element(page.getByText('Berlin')).toBeInTheDocument();
 	});
 });