Get call form answers

Retrieve the booking-form answers a lead submitted when booking this call, normalized to a stable shape regardless of how the answers were stored (v1.0 flat or v2.0 structured form data).

Behavior:

• Basic contact fields (name / email / phone) are excluded — they're on the lead itself
• Labels are enriched from the booking link's field schema when the call was booked through a link (booking_link_id)
• Returns an empty array when the call has no form data

Pair with GET /v1/booking-links/:id/fields to see the full question schema each answer belongs to.

curl -X GET "https://api.aura-app.ai/v1/calls/550e8400-e29b-41d4-a716-446655440000/answers"

{
  "data": {
    "answers": [
      {
        "field_id": "field_1718000000000",
        "label": "What is your monthly revenue?",
        "type": "select",
        "value": "$10k-$50k"
      }
    ]
  },
  "success": true
}

{
  "code": "NOT_FOUND",
  "error": "Lead not found",
  "requestId": "req_abc123",
  "success": false
}

{
  "code": "NOT_FOUND",
  "error": "Lead not found",
  "requestId": "req_abc123",
  "success": false
}