Delete Account API + UI + Store assets (icon, graphic, screenshot)

- DELETE /api/v1/auth/delete-account (GDPR + Google Play req)
- Settings: red Delete Account section with confirmation
- Store assets: icon-512, feature-graphic, screenshot-1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/tasks/app/settings/page.tsx

@@ -217,6 +217,21 @@ export default function SettingsPage() {
       <div className="text-center text-xs text-muted py-4">
         <p>{t("common.appName")} {t("common.appVersion")}</p>
       </div>
+    
+      <section className="bg-red-50 dark:bg-red-900/20 rounded-xl p-4 border border-red-200 dark:border-red-800 mt-6">
+        <h2 className="font-semibold text-red-600 dark:text-red-400 mb-2">Smazat ucet</h2>
+        <p className="text-sm text-red-500 mb-3">Trvale smazat ucet a vsechna data. Tuto akci nelze vratit.</p>
+        <button onClick={() => {
+          if (confirm("Opravdu chcete trvale smazat svuj ucet a vsechna data?")) {
+            const token = localStorage.getItem("taskteam_token");
+            fetch("/api/v1/auth/delete-account", { method: "DELETE", headers: { Authorization: "Bearer " + token } })
+              .then(r => r.json())
+              .then(() => { localStorage.clear(); window.location.href = "/login"; });
+          }
+        }} className="px-4 py-2 bg-red-600 text-white rounded-lg text-sm font-medium">
+          Smazat ucet
+        </button>
+      </section>
     </div>
   );
 }