Fix Nuggets workflow audio: serve with audio content type (nosniff blocked octet-stream), show playback errors; v2.17.1

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.17.0",
+  "version": "2.17.1",
   "type": "module",
   "scripts": {
     "dev": "vite",