Integrating with the Document Sanitization Service

- [ ] When is the optimal time within the form submission flow to send to the service?
- [ ] Do we need to worry about cleanup calls due to abandoned/cancelled form flows?
- [ ] Will we still provide links or references to the originals for hosts?
- [ ] Can we be less restrictive with our accepted documents?
- [ ] How does this work with DocumentAI?

Start by mapping the form submission flow and the existing DocumentAI integration, then investigate how the proposed Document Sanitization Service would fit. The issue raises unresolved questions about timing, cleanup for abandoned flows, links to originals, accepted document types, and DocumentAI interaction; done is not defined until these design decisions are answered.

Written by the indexing model from the issue text.