Twilio Audio Bridge Test

Endpoints:

• POST /api/upload/product - Upload product catalog PDF (multipart)
• POST /api/upload/policy - Upload customer policy PDF (multipart)
• POST /api/process/product?filename=... - Process already-uploaded product PDF (SCP bypass)
• POST /api/process/policy?filename=... - Process already-uploaded policy PDF (SCP bypass)
• POST /api/calls/initiate?customer_id=X - Make outbound call
• GET /api/calls/status/{call_sid} - Check call status
• GET /api/streams - List active streams
• WS /media-stream - WebSocket for audio