Add vitals fields to registration

[naa-siuuuu-ff]

✨ Feature: Integrate Initial Vitals (Temperature) via Transactional Workflow

Description

This pull request refactors the patient creation process into a robust, atomic transaction to ensure data integrity across multiple models.

The primary goal is to successfully capture the initial Temperature reading provided during registration. This is achieved by creating a three-step chained workflow: Patient $\rightarrow$ Visit $\rightarrow$ Vitals.

This PR also made creating vitals more efficient by doing it in the backend, instead of the previous method of sending another API to the frontend, then another api to the backend to create vitals when a patient was created.

Key Changes and Implementation Details

• Transactional Service Function: Introduced @transaction.atomic on the new create_patient_with_temperature service function (likely in api/services/patient_service.py or similar) to guarantee that either the Patient, Visit, and Vitals records are all created successfully, or none are.
• Multi-Model Chaining:
  1. A new Patient record is created.
  2. An initial Visit record is immediately created for the new patient with a status of 'started'.
  3. If the temperature field exists in the form data, a new Vitals record is created using the dedicated VitalsSerializer and is correctly linked to the newly created Visit.
• View Update: The PatientView.post method is updated to utilize this new transactional function.

How to Test

1. Use the frontend patient registration form and include the Temperature value.
2. Submit the form.
3. Verify that three database records were created successfully and are linked:
   • A new Patient entry.
   • A new Visit entry (linked to the Patient).
   • A new Vitals entry (linked to the Visit, containing the correct Temperature).
4. (Optional): Test submitting the form without the temperature field to confirm only the Patient and Visit are created.

---

Related Issue: [Link to JIRA/Trello ticket, if applicable]

[noahseethorcodes]

added child fields (e.g. pallor, scoliosis) as well