Render DocumentTemplate as PDF

Renders a document template with the provided data to PDF format.

The template receives the TemplateVariables data structure from the request.
All properties are optional and accessible via Liquid syntax (e.g., {{ PrimaryContact.FirstName }})

Example request:

POST /tenants/acme/document-templates/engagement-letter-standard/render
{
  "designThemeCode": "professional-blue",
  "data": {
    "title": "Engagement Letter",
    "client": {
      "primaryContact": { "firstName": "John", "lastName": "Doe" },
      "partner": { "name": "Jane Smith", "email": "jane@example.com" }
    },
    "practice": {
      "address": "123 Main St",
      "email": "info@practice.com",
      "telephone": "555-1234"
    }
  }
}