Add Calls API endpoints and schemas

[AAnkudovich]

Add Calls API endpoints and schemas

• Introduces Calls endpoints:
  • GET /calls (pagination via page and per_page, default 25, max 25)
  • GET /calls/{id}
  • GET /calls/{id}/recording (302 redirect to signed URL; 404 if not available)
  • GET /calls/{id}/transcript (returns [{}] when no transcript; 404 if call does not exist)
• Adds call and call_list schemas
  • Fields aligned with Api::V3::Calls::Presenters::CallResponse (e.g., id, type=call, conversation_id, admin_id, contact_id, state, timestamps, recording_url, call_type, direction, ended_reason, phone, fin_recording_url, fin_transcription_url)
• Tags endpoints under Calls
• Example responses aligned with controller behavior in Api::V3::CallsController (pagination defaults and limits, 302 redirect for recording, [{}] no-transcript behavior)

Generated with Cursor

[davymalone]

This looks good to me, just one thing @AAnkudovich I think we should document the calls/search action as well.

[davymalone]

🚢