- seed_demo_data: every seeded Store.logo/cover_image and Product.image
now points at a shared placeholder MinIO object_key
(uploads/c1508b9e-c01f-4892-b24c-c1a949b5b5f5.png) instead of null, so
demo data exercises the image_url/logo_url/etc. fields end-to-end.
Note: <field>_url will 404 until that object is actually uploaded to
the bucket.
- .env.example: drop the redundant MINIO_EXTERNAL_ENDPOINT* lines —
they already default to MINIO_ENDPOINT/MINIO_USE_HTTPS, and aren't
read anywhere in this app's actual presign/read path.
- Add MEDIA_INTEGRATION.md: reference doc for the MinIO/presigned-media
work on this branch (architecture, settings, API shape, existing-data
caveats, what was verified).
