Update desktop app to android app capabilities.

requirements.txt

@@ -8,8 +8,10 @@ numpy>=1.24
 
 # HTTP client to the Bolt desk API
 requests>=2.31
-# Streaming speech-to-text (audio/stt_stream.py). Optional in practice: without
-# it the pet falls back to uploading the finished clip, exactly as before.
+# Speech-to-text, via the server's /desk/stt websocket relay (audio/stt.py,
+# audio/stt_stream.py) — there is no separate REST fallback, so this is now
+# load-bearing for transcription to work at all, not just for the
+# transcribe-while-talking optimisation STT_STREAMING controls.
 websocket-client>=1.7
 
 # Wake-word detection (local, offline after first run) — runs the
@@ -19,7 +21,7 @@ websocket-client>=1.7
 # under the package's own resources/ dir afterward) — needs internet once.
 openwakeword
 
-# Offline TTS fallback if ElevenLabs isn't configured or a request fails.
+# Offline TTS fallback if the server call isn't configured or fails.
 # Uses SAPI5 on Windows, NSSpeechSynthesizer on macOS, espeak on Linux
 # (Linux also needs: sudo apt install espeak-ng).
 pyttsx3>=2.90