feat(dashboard): add reader dashboard components

Adds 5 new components for the permission-gated reader layout:
- ReaderStatsStrip: stat tiles (documents / persons / stories) linking to list pages
- ReaderPersonChips: top-N persons by doc count with avatar + name
- ReaderDraftsModule: blog draft list for BLOG_WRITE users
- ReaderRecentDocs: 5 most-recently-updated docs with Neu/Aktualisiert badge
- ReaderRecentStories: 3 latest published stories with 150-char HTML-stripped excerpt

Each component ships with a vitest-browser spec covering the key assertions.
Avatar color/initials logic is inlined to satisfy $lib/shared → $lib/person
boundary rule.

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

frontend/src/lib/shared/dashboard/ReaderRecentStories.svelte.spec.ts

@@ -0,0 +1,60 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+
+import ReaderRecentStories from './ReaderRecentStories.svelte';
+import type { components } from '$lib/generated/api';
+
+type Geschichte = components['schemas']['Geschichte'];
+
+afterEach(() => {
+	cleanup();
+});
+
+const story1: Geschichte = {
+	id: 'g1',
+	title: 'Die Familie Müller',
+	body: '<p>Dies ist eine sehr lange Geschichte über die Familie Müller. Sie lebten in Bayern und hatten viele Kinder. Das war früher so üblich in diesen Gebieten.</p>',
+	status: 'PUBLISHED',
+	createdAt: '2025-01-01T00:00:00Z',
+	updatedAt: '2025-01-01T00:00:00Z',
+	publishedAt: '2025-01-01T00:00:00Z'
+};
+
+const longBodyStory: Geschichte = {
+	id: 'g2',
+	title: 'Sehr lange Geschichte',
+	body: '<p>' + 'A'.repeat(200) + '</p>',
+	status: 'PUBLISHED',
+	createdAt: '2025-02-01T00:00:00Z',
+	updatedAt: '2025-02-01T00:00:00Z',
+	publishedAt: '2025-02-01T00:00:00Z'
+};
+
+describe('ReaderRecentStories', () => {
+	it('renders a link to /geschichten/{id} for each story', async () => {
+		render(ReaderRecentStories, { stories: [story1] });
+		const link = page.getByRole('link', { name: /Die Familie Müller/ });
+		await expect.element(link).toHaveAttribute('href', '/geschichten/g1');
+	});
+
+	it('truncates body excerpt to 150 characters and strips HTML', async () => {
+		render(ReaderRecentStories, { stories: [longBodyStory] });
+		const excerpt = page.getByText(/A{100,150}/);
+		await expect.element(excerpt).toBeInTheDocument();
+		const text = ((await excerpt.element()) as HTMLElement).textContent;
+		expect(text!.replace(/…$/, '').length).toBeLessThanOrEqual(150);
+	});
+
+	it('shows empty state when stories array is empty', async () => {
+		render(ReaderRecentStories, { stories: [] });
+		const links = page.getByRole('link');
+		await expect.element(links).not.toBeInTheDocument();
+	});
+
+	it('renders "Alle Geschichten" link', async () => {
+		render(ReaderRecentStories, { stories: [story1] });
+		const allLink = page.getByRole('link', { name: /Alle Geschichten/i });
+		await expect.element(allLink).toHaveAttribute('href', '/geschichten');
+	});
+});