Retrieve Qdrant points by ID and scroll/paginate all points (POST /collections/{name}/points, POST /collections/{name}/points/scroll)

Documented steps

1. Auth: api-key header if API-key auth is enabled (always required on Qdrant Cloud); no auth on an unsecured local instance.
2. Retrieve specific points by ID: curl -X POST http://localhost:6333/collections/{collection_name}/points -H 'Content-Type: application/json' -d '{"ids": [0, 3, 100]}' — add with_vectors / with_payload booleans to control returned data
3. Single known ID convenience route: GET /collections/{collection_name}/points/{point_id}
4. Scroll in batches: curl -X POST http://localhost:6333/collections/{collection_name}/points/scroll -H 'Content-Type: application/json' -d '{"limit": 100, "with_payload": true, "with_vector": false}'
5. Points come back sorted by ID; pass the response's next_page_offset as offset in the next scroll request
6. Stop when next_page_offset is null — no more pages
7. Add a filter object to the scroll body to page through only matching points (pair with a payload index for performance)
8. Official docs: https://qdrant.tech/documentation/manage-data/points/