feat: enhance navigation and filtering behavior

- Added clickable app title links in header and sidebar that reset view to all markdown files
- Fixed quicklink filtering to use correct frontmatter boolean keys (favoris, publish, draft, etc.)
- Updated sidebar behavior to auto-open Quick Links section when viewing markdown files
- Added filter clearing when switching between views to prevent conflicting filters
- Modified URL state handling to preserve kind parameter when navigating
- Enforced markdown-only

e2e/quicklinks-sync.spec.ts

@@ -0,0 +1,29 @@
+import { test, expect } from '@playwright/test';
+
+/**
+ * Quick Links → Search/Filters → Notes-list sync
+ * - One click on a Quick Link shows the filter pill above the search immediately
+ * - Notes-list updates accordingly
+ */
+
+test.describe('Quick Links state sync', () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto('http://localhost:4200');
+    await page.waitForLoadState('networkidle');
+  });
+
+  test('one-click Favoris shows pill above search', async ({ page }) => {
+    // Open Quick Links if inside an accordion in desktop left sidebar
+    await page.getByText('Quick Links').first().click({ trial: true }).catch(() => {});
+
+    // Click on Favoris in Quick Links
+    await page.getByText('Favoris', { exact: true }).first().click();
+
+    // Expect a pill with label "Favoris" to appear above the search input in the list panel
+    const pill = page.locator('app-filter-badge .label', { hasText: 'Favoris' });
+    await expect(pill).toBeVisible({ timeout: 3000 });
+
+    // URL should contain quick=Favoris
+    await expect.poll(async () => new URL(page.url()).searchParams.get('quick')).toBe('Favoris');
+  });
+});