Feat: error templates for in-person enrollment

[angela-tran]

Closes #2345

This PR implements the templates for in-person error pages and also adds the call to send a Sentry notification for those errors.

Testing locally

You can view the pages by going directly to the URLs:

• system error: in_person/enrollment/error
• server error: in_person/error
• re-enrollment error: in_person/enrollment/error/reenrollment
• user enrollment error: in_person/enrollment/retry

If you want to test the actual view redirecting logic, you'll need to simulate the errors.

You can simulate errors by changing the returned Status and exception on this line:

benefits/benefits/in_person/views.py

Line 78 in e6af3db

status, exception = enroll(request, card_token)

For re-enrollment errors, you also need the dates to be populated, so:

• (Temporarily) override the value returned by session.enrollment_expiry() e.g.

expiry = datetime(2025, 9, 20, tzinfo=timezone.utc).timestamp()
if expiry:
    return datetime.fromtimestamp(expiry, tz=timezone.utc)
else:
    return None

• In the Admin, update the flow that you plan to test with:
  • check supports expiration
  • add a value for the expiration days and re-enrollment days

Don't forget that there are also the onVerificationFailure and onError callback functions in the front-end that will redirect to error pages as well.

Screenshots

Expand

System error

Server error

Re-enrollment error

User enrollment error

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
benefits/in_person
views.py
Project Total

This report was generated by python-coverage-comment-action

[lalver1]

Looks good to me! I tested by simulating the errors and everything worked as expected 👍

[thekaveman]

Looking at this 👀

[thekaveman]

I simulated all the errors locally and this looks great.

Minor suggestion, but non-blocking.

[thekaveman]

commenting on the line just below the line I'm talking about, since it isn't available for comment

return TemplateResponse(request, "in_person/enrollment.html", context)

Minor suggestion, now that an in_person/templates/in_person/enrollment/ directory exists, maybe we should move this enrollment.html template in there as index.html.