feat(persons): retarget frequent-correspondents card to document search

The "Häufige Korrespondenten" card linked into the standalone Briefwechsel
view. Retarget each chip to the existing document search pre-filtered by
sender and receiver (/documents?senderId=A&receiverId=B), naming both
persons in a search-action title, swapping the chat-bubble icon for a
magnifier, and clarifying that the ×N badge counts shared letters in both
directions (not the unidirectional search result count).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/messages/de.json

@@ -190,6 +190,9 @@
 	"person_role_receiver": "Empfangen",
 	"person_co_correspondents_heading": "Häufige Korrespondenten",
 	"person_correspondents_hint": "klicken für Konversation",
+	"person_correspondents_search_title": "Briefe von {A} an {B} durchsuchen",
+	"person_correspondents_search_hint": "klicken, um Briefe zu durchsuchen",
+	"person_correspondents_badge_title": "Gemeinsame Briefe in beide Richtungen",
 	"person_show_more": "+ {count} weitere anzeigen",
 	"conv_label_person_a": "Person A (Absender)",
 	"conv_label_person_b": "Korrespondent",

frontend/messages/en.json

@@ -190,6 +190,9 @@
 	"person_role_receiver": "Received",
 	"person_co_correspondents_heading": "Frequent correspondents",
 	"person_correspondents_hint": "click to view conversation",
+	"person_correspondents_search_title": "Search letters from {A} to {B}",
+	"person_correspondents_search_hint": "click to search letters",
+	"person_correspondents_badge_title": "Shared letters in both directions",
 	"person_show_more": "+ {count} more",
 	"conv_label_person_a": "Person A (Sender)",
 	"conv_label_person_b": "Correspondent",

frontend/messages/es.json

@@ -190,6 +190,9 @@
 	"person_role_receiver": "Recibido",
 	"person_co_correspondents_heading": "Corresponsales frecuentes",
 	"person_correspondents_hint": "clic para ver conversación",
+	"person_correspondents_search_title": "Buscar cartas de {A} a {B}",
+	"person_correspondents_search_hint": "haz clic para buscar cartas",
+	"person_correspondents_badge_title": "Cartas compartidas en ambas direcciones",
 	"person_show_more": "+ {count} más",
 	"conv_label_person_a": "Persona A (Remitente)",
 	"conv_label_person_b": "Corresponsal",

frontend/src/routes/persons/[id]/+page.svelte

@@ -68,7 +68,11 @@ const coCorrespondents = $derived.by(() => {
 
 		<!-- Right column: correspondents + relationships + documents -->
 		<div>
-			<CoCorrespondentsList coCorrespondents={coCorrespondents} personId={person.id} />
+			<CoCorrespondentsList
+				coCorrespondents={coCorrespondents}
+				personId={person.id}
+				personName={person.displayName}
+			/>
 
 			<div class="mt-6">
 				<PersonRelationshipsCard

frontend/src/routes/persons/[id]/CoCorrespondentsList.svelte

@@ -3,10 +3,12 @@ import { m } from '$lib/paraglide/messages.js';
 
 let {
 	coCorrespondents,
-	personId
+	personId,
+	personName
 }: {
 	coCorrespondents: { id: string; name: string; count: number }[];
 	personId: string;
+	personName: string;
 } = $props();
 
 function initials(name: string): string {
@@ -25,13 +27,15 @@ function initials(name: string): string {
 			<h3 class="text-[10px] font-bold tracking-widest text-ink-3 uppercase">
 				{m.person_co_correspondents_heading()}
 			</h3>
-			<span class="font-sans text-[10px] text-ink-3 italic">{m.person_correspondents_hint()}</span>
+			<span class="font-sans text-[10px] text-ink-3 italic"
+				>{m.person_correspondents_search_hint()}</span
+			>
 		</div>
 		<div class="flex flex-wrap gap-2">
 			{#each coCorrespondents as c (c.id)}
 				<a
-					href="/briefwechsel?senderId={personId}&receiverId={c.id}"
-					title={m.doc_conversation_title()}
+					href="/documents?senderId={personId}&receiverId={c.id}"
+					title={m.person_correspondents_search_title({ A: personName, B: c.name })}
 					class="inline-flex items-center gap-1.5 rounded-full border border-line bg-muted px-3 py-1.5 font-sans text-xs font-bold text-ink transition-colors hover:border-primary hover:bg-surface"
 				>
 					<!-- Initials circle -->
@@ -41,8 +45,11 @@ function initials(name: string): string {
 						{initials(c.name)}
 					</span>
 					{c.name}
-					<span class="text-[10px] font-normal text-ink-3">×{c.count}</span>
-					<!-- Chat icon -->
+					<span
+						class="text-[10px] font-normal text-ink-3"
+						title={m.person_correspondents_badge_title()}>×{c.count}</span
+					>
+					<!-- Search icon -->
 					<svg
 						class="h-3 w-3 flex-shrink-0 text-ink-3"
 						fill="none"
@@ -54,7 +61,7 @@ function initials(name: string): string {
 							stroke-linecap="round"
 							stroke-linejoin="round"
 							stroke-width="2"
-							d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z"
+							d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
 						/>
 					</svg>
 				</a>

frontend/src/routes/persons/[id]/CoCorrespondentsList.svelte.test.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect, afterEach } from 'vitest';
 import { cleanup, render } from 'vitest-browser-svelte';
 import { page } from 'vitest/browser';
+import { m } from '$lib/paraglide/messages.js';
 import CoCorrespondentsList from './CoCorrespondentsList.svelte';
 
 afterEach(cleanup);
@@ -8,7 +9,7 @@ afterEach(cleanup);
 describe('CoCorrespondentsList', () => {
 	it('renders nothing when the coCorrespondents list is empty', async () => {
 		render(CoCorrespondentsList, {
-			props: { coCorrespondents: [], personId: 'p-1' }
+			props: { coCorrespondents: [], personId: 'p-1', personName: 'Anna Schmidt' }
 		});
 
 		await expect
@@ -16,18 +17,19 @@ describe('CoCorrespondentsList', () => {
 			.not.toBeInTheDocument();
 	});
 
-	it('renders the heading and hint when there is at least one co-correspondent', async () => {
+	it('renders the heading and search hint when there is at least one co-correspondent', async () => {
 		render(CoCorrespondentsList, {
 			props: {
 				coCorrespondents: [{ id: 'c-1', name: 'Max Mustermann', count: 3 }],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});
 
 		await expect
 			.element(page.getByRole('heading', { name: /häufige korrespondenten/i }))
 			.toBeVisible();
-		await expect.element(page.getByText('klicken für Konversation')).toBeVisible();
+		await expect.element(page.getByText(m.person_correspondents_search_hint())).toBeVisible();
 	});
 
 	it('renders one chip per co-correspondent with name and count', async () => {
@@ -37,7 +39,8 @@ describe('CoCorrespondentsList', () => {
 					{ id: 'c-1', name: 'Max Mustermann', count: 3 },
 					{ id: 'c-2', name: 'Erika Beispiel', count: 1 }
 				],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});
 
@@ -47,24 +50,40 @@ describe('CoCorrespondentsList', () => {
 		await expect.element(page.getByText('×1')).toBeVisible();
 	});
 
-	it('points each chip to the bilateral conversation route with the correct ids', async () => {
+	it('points each chip to the document search pre-filtered by sender and receiver', async () => {
 		render(CoCorrespondentsList, {
 			props: {
 				coCorrespondents: [{ id: 'c-1', name: 'Max Mustermann', count: 3 }],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});
 
 		await expect
 			.element(page.getByRole('link', { name: /max mustermann/i }))
-			.toHaveAttribute('href', '/briefwechsel?senderId=p-1&receiverId=c-1');
+			.toHaveAttribute('href', '/documents?senderId=p-1&receiverId=c-1');
+	});
+
+	it('labels the link as a search action naming both persons', async () => {
+		render(CoCorrespondentsList, {
+			props: {
+				coCorrespondents: [{ id: 'c-1', name: 'Max Mustermann', count: 3 }],
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
+			}
+		});
+
+		const link = page.getByRole('link', { name: /max mustermann/i });
+		await expect.element(link).toHaveAttribute('title', /Anna Schmidt/);
+		await expect.element(link).toHaveAttribute('title', /Max Mustermann/);
 	});
 
 	it('builds initials from up to two name parts', async () => {
 		render(CoCorrespondentsList, {
 			props: {
 				coCorrespondents: [{ id: 'c-1', name: 'Max Mustermann Beispiel', count: 1 }],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});
 
@@ -75,7 +94,8 @@ describe('CoCorrespondentsList', () => {
 		render(CoCorrespondentsList, {
 			props: {
 				coCorrespondents: [{ id: 'c-1', name: 'Cher', count: 2 }],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});
 
@@ -88,7 +108,8 @@ describe('CoCorrespondentsList', () => {
 		render(CoCorrespondentsList, {
 			props: {
 				coCorrespondents: [{ id: 'c-1', name: '  Max', count: 1 }],
-				personId: 'p-1'
+				personId: 'p-1',
+				personName: 'Anna Schmidt'
 			}
 		});