fix: increase maxOutputTokens to 8192 in chatToRecipe; add 'Apri la ricetta' button after transfer

Fixes parse_error on complex recipes (JSON was truncated at 2048 tokens).
After successful transfer, shows 'Apri la ricetta' button inline in chat
alongside the '✅ Aggiunta alle Ricette!' button.
Closes #27

index.html

@@ -1462,6 +1462,6 @@
     </div>
 </div>
 
-<script src="assets/js/app.js?v=20260510h"></script>
+<script src="assets/js/app.js?v=20260510i"></script>
 </body>
 </html>