test: cover OcrTrigger, CoCorrespondentsList, reset-password page

OcrTrigger: select initialisation from storedScriptType (with the
UNKNOWN sentinel collapsing to empty), button disabled-state matrix
across blockCount × scriptType, onTrigger callback wiring, no-annotations
hint visibility.

CoCorrespondentsList: empty-list early return, populated heading + hint,
chip count and links, initials-from-up-to-two-name-parts logic.

reset-password page: form/success branches, hidden-token rendering with
null fallback, MISMATCH vs generic error code mapping, back-to-login
link.

21 tests across three files.

Refs #496.

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

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

@@ -0,0 +1,73 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import CoCorrespondentsList from './CoCorrespondentsList.svelte';
+
+afterEach(cleanup);
+
+describe('CoCorrespondentsList', () => {
+	it('renders nothing when the coCorrespondents list is empty', async () => {
+		render(CoCorrespondentsList, {
+			props: { coCorrespondents: [], personId: 'p-1' }
+		});
+
+		await expect
+			.element(page.getByRole('heading', { name: /häufige korrespondenten/i }))
+			.not.toBeInTheDocument();
+	});
+
+	it('renders the heading and 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'
+			}
+		});
+
+		await expect
+			.element(page.getByRole('heading', { name: /häufige korrespondenten/i }))
+			.toBeVisible();
+		await expect.element(page.getByText('klicken für Konversation')).toBeVisible();
+	});
+
+	it('renders one chip per co-correspondent with name and count', async () => {
+		render(CoCorrespondentsList, {
+			props: {
+				coCorrespondents: [
+					{ id: 'c-1', name: 'Max Mustermann', count: 3 },
+					{ id: 'c-2', name: 'Erika Beispiel', count: 1 }
+				],
+				personId: 'p-1'
+			}
+		});
+
+		await expect.element(page.getByText('Max Mustermann')).toBeVisible();
+		await expect.element(page.getByText('Erika Beispiel')).toBeVisible();
+		await expect.element(page.getByText('×3')).toBeVisible();
+		await expect.element(page.getByText('×1')).toBeVisible();
+	});
+
+	it('points each chip to the bilateral conversation route with the correct ids', async () => {
+		render(CoCorrespondentsList, {
+			props: {
+				coCorrespondents: [{ id: 'c-1', name: 'Max Mustermann', count: 3 }],
+				personId: 'p-1'
+			}
+		});
+
+		await expect
+			.element(page.getByRole('link', { name: /max mustermann/i }))
+			.toHaveAttribute('href', '/briefwechsel?senderId=p-1&receiverId=c-1');
+	});
+
+	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'
+			}
+		});
+
+		await expect.element(page.getByText('MM')).toBeVisible();
+	});
+});