curl https://api.vozagent.ai/v1/calls/call-a1b2c3d4... \
  -H "Authorization: Bearer <token>"

{
  "id": "call-a1b2c3d4-e5f6-a7b8-c9d0",
  "contact_id": "c1a2b3c4-d5e6-f7a8-b9c0",
  "assistant_id": "a1b2c3d4-e5f6-a7b8",
  "call_type": "inbound",
  "call_status": "completed",
  "duration_seconds": 180,
  "call_started_at": "2024-01-15T10:30:00Z",
  "call_ended_at": "2024-01-15T10:33:00Z",
  "customer_phone_number": "+15551234567",
  "assistant_phone_number": "+15559876543",
  "transcript": "Assistant: Hello! Thanks for calling Acme Outdoor Living. How can I help you today?\nCustomer: Hi, I'm interested in getting a quote for a new patio...",
  "analysis_summary": "Customer inquired about patio installation for backyard renovation project",
  "call_intent": "new_quote",
  "lead_qualification": "hot",
  "appointment_booked": true,
  "recording_url": "https://storage.vozagent.ai/recordings/call-a1b2c3d4.mp3",
  "cost": 0.15
}