Remove Twilio dependencies and cleanup references

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/services/audio.py

@@ -329,7 +329,7 @@ class AudioService:
             device_sr = int(device_info['default_samplerate'])
             channel_idx = min(channel, num_channels) - 1
 
-            # Resample from Twilio's 8kHz to device sample rate
+            # Resample to device sample rate if needed
             if sample_rate != device_sr:
                 audio = librosa.resample(audio, orig_sr=sample_rate, target_sr=device_sr)
 

docs/twilio-setup.md

@@ -1,41 +0,0 @@
-# Twilio + Cloudflare Tunnel Setup
-
-## 1. Twilio Account
-- Sign up at twilio.com
-- Buy a phone number (~$1.15/mo)
-- Note your Account SID and Auth Token from the dashboard
-
-## 2. Environment Variables
-Add to `.env`:
-```
-TWILIO_ACCOUNT_SID=ACxxxxxxxx
-TWILIO_AUTH_TOKEN=xxxxxxxx
-TWILIO_PHONE_NUMBER=+1xxxxxxxxxx
-TWILIO_WEBHOOK_BASE_URL=https://radio.yourdomain.com
-```
-
-## 3. Cloudflare Tunnel
-Create a tunnel that routes to your local server:
-
-```bash
-cloudflared tunnel create radio-show
-cloudflared tunnel route dns radio-show radio.yourdomain.com
-```
-
-Run during shows:
-```bash
-cloudflared tunnel --url http://localhost:8000 run radio-show
-```
-
-Or add to your NAS Cloudflare tunnel config.
-
-## 4. Twilio Webhook Config
-In the Twilio console, configure your phone number:
-- Voice webhook URL: `https://radio.yourdomain.com/api/twilio/voice`
-- Method: POST
-
-## 5. Test
-1. Start the server: `./run.sh`
-2. Start the tunnel: `cloudflared tunnel run radio-show`
-3. Call your Twilio number from a phone
-4. You should see the caller appear in the queue panel