- Schema: add merchant_id/prospect_id with model_validator requiring
at least one. Remove from-prospect endpoint (unified into POST /sites)
- Service: rewrite create() — if merchant_id use it directly, if
prospect_id auto-create merchant from prospect data. Remove system
merchant hack entirely. Extract _create_merchant_from_prospect helper.
- Simplify accept_proposal() — merchant already exists at creation,
only creates subscription and marks prospect converted
- Tests: update all create calls with merchant_id, replace from-prospect
tests with prospect_id + validation tests
Closes docs/proposals/hosting-site-creation-fix.md
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Samir Boulahtit
59b0d8977a