chore: bump version to 0.21.6

Active service workers change the fetch lifecycle enough that Playwright's
waitForResponse() misses SW-mediated responses, causing preferences tests
to timeout. Block SW registration during e2e tests.

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

package.json

@@ -1,7 +1,7 @@
 {
   "name": "crumbs",
   "private": true,
-  "version": "0.21.5",
+  "version": "0.21.6",
   "type": "module",
   "license": "MIT",
   "author": "Bretzel (https://bretzel.app)",

playwright.config.ts

@@ -11,7 +11,8 @@ export default defineConfig({
 	use: {
 		baseURL: 'http://localhost:4173',
 		trace: 'on-first-retry',
-		screenshot: 'only-on-failure'
+		screenshot: 'only-on-failure',
+		serviceWorkers: 'block'
 	},
 	projects: [
 		{

website/index.html

@@ -280,7 +280,7 @@
 				<li><a href="https://github.com/bretzel-app/crumbs/blob/main/docs/DEPLOYMENT.md" target="_blank" rel="noopener">Docs</a></li>
 				<li><a href="https://github.com/bretzel-app/crumbs/blob/main/LICENSE" target="_blank" rel="noopener">License</a></li>
 			</ul>
-			<span class="footer-version">v0.21.5</span>
+			<span class="footer-version">v0.21.6</span>
 		</div>
 	</footer>