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/lib/ocr/OcrTrigger.svelte.test.ts

@@ -0,0 +1,95 @@
+import { describe, it, expect, vi, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import OcrTrigger from './OcrTrigger.svelte';
+
+afterEach(cleanup);
+
+describe('OcrTrigger', () => {
+	it('renders the script-type select and the trigger button', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 1, storedScriptType: 'HANDWRITING_KURRENT', onTrigger: () => {} }
+		});
+
+		await expect.element(page.getByRole('combobox')).toBeVisible();
+		await expect.element(page.getByRole('button')).toBeVisible();
+	});
+
+	it('initialises the select with the stored script type when provided', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 1, storedScriptType: 'HANDWRITING_KURRENT', onTrigger: () => {} }
+		});
+
+		const select = (await page.getByRole('combobox').element()) as HTMLSelectElement;
+		expect(select.value).toBe('HANDWRITING_KURRENT');
+	});
+
+	it('starts with an empty selection when storedScriptType is UNKNOWN', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 1, storedScriptType: 'UNKNOWN', onTrigger: () => {} }
+		});
+
+		const select = (await page.getByRole('combobox').element()) as HTMLSelectElement;
+		expect(select.value).toBe('');
+	});
+
+	it('disables the trigger button when no script type is selected', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 1, storedScriptType: 'UNKNOWN', onTrigger: () => {} }
+		});
+
+		const btn = (await page.getByRole('button').element()) as HTMLButtonElement;
+		expect(btn.disabled).toBe(true);
+	});
+
+	it('disables the trigger button when blockCount is 0 even if a script type is selected', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 0, storedScriptType: 'HANDWRITING_KURRENT', onTrigger: () => {} }
+		});
+
+		const btn = (await page.getByRole('button').element()) as HTMLButtonElement;
+		expect(btn.disabled).toBe(true);
+	});
+
+	it('shows the no-annotations hint when blockCount is 0', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 0, storedScriptType: 'HANDWRITING_KURRENT', onTrigger: () => {} }
+		});
+
+		await expect
+			.element(page.getByText('Zeichnen Sie zuerst Bereiche auf dem Dokument ein.'))
+			.toBeVisible();
+	});
+
+	it('omits the no-annotations hint when blockCount is greater than 0', async () => {
+		render(OcrTrigger, {
+			props: { blockCount: 5, storedScriptType: 'HANDWRITING_KURRENT', onTrigger: () => {} }
+		});
+
+		await expect
+			.element(page.getByText('Zeichnen Sie zuerst Bereiche auf dem Dokument ein.'))
+			.not.toBeInTheDocument();
+	});
+
+	it('calls onTrigger with the selected script type and useExistingAnnotations=true', async () => {
+		const onTrigger = vi.fn();
+		render(OcrTrigger, {
+			props: { blockCount: 5, storedScriptType: 'HANDWRITING_KURRENT', onTrigger }
+		});
+
+		await page.getByRole('button').click();
+
+		expect(onTrigger).toHaveBeenCalledWith('HANDWRITING_KURRENT', true);
+	});
+
+	it('does not call onTrigger when no script type is selected', async () => {
+		const onTrigger = vi.fn();
+		render(OcrTrigger, {
+			props: { blockCount: 5, storedScriptType: 'UNKNOWN', onTrigger }
+		});
+
+		await page.getByRole('button').click({ force: true });
+
+		expect(onTrigger).not.toHaveBeenCalled();
+	});
+});