- Implemented.

Safari/iPhone recording now uses MP4/AAC when WebM is unavailable.
WebM remains the default when supported and FFmpeg is disabled.
Added optional FFmpeg profiles: recommended M4A/AAC-LC or requested 
MP4/H.264 + AAC.
Added MIME-aware, playsinline audio playback.
Added dashboard controls under Plans & Platform → Voice Transcoding / 
FFmpeg.
Added Apache/Nginx media MIME configuration and documentation.
Core implementation: voice_transcoder.php (line 72), messages.php (line 
86), and cyberchat-app.js (line 635).

index.html

@@ -17,7 +17,7 @@
   <script>
     window.CYBERCHAT_BASE = '';
   </script>
-  <script src="assets/js/cyberchat-app.js?v=20260609.5"></script>
+  <script src="assets/js/cyberchat-app.js?v=20260609.6"></script>
   <script>
     document.addEventListener('DOMContentLoaded', function() {
       CyberChat.init('#app');