Simplify OpenAPI generation

docs/MILESTONE_03.md

@@ -8,16 +8,13 @@
 - Added report media uploads at `POST /api/v1/reports/{id}/media`.
 - Supported JPEG, PNG, WebP, MP4, WebM and QuickTime uploads.
 - Report attachments now use the `/media` upload path.
-- Added generated OpenAPI JSON through `scripts/swagger-drogon/`, combining
-  Drogon route macros, adjacent metadata blocks, C++ inference and the Visione
-  schema registry.
+- Added generated OpenAPI JSON from Drogon route macros plus the manual
+  `docs/openapi/visione.openapi.yaml` contract.
 - Exposed `/api/v1/openapi.json` and `/api/v1/docs`.
 - Added a small Streamlit API lab for visual endpoint testing.
 
 ## To do next
-- Expand OpenAPI schema coverage as endpoints evolve.
-- Consider extracting `scripts/generate_openapi.py` into an open-source standalone
-  project once the conventions stabilize.
+- Expand the manual OpenAPI contract as endpoints evolve.
 - Add minimal media upload integration tests after endpoint contracts settle.
 - Keep API and docs on `media` terminology only.
 - Keep the Streamlit lab small and replace it with the real frontend later.