search-after-support

[stefangutica]

Reasoning

• Simplifies pagination by using a searchAfter cursor directly on the returned documents.
• Keeps pagination deterministic by adding uuid.keyword as a tie-breaker when sorting is present.
• Removes the need for any interceptor-based scroll flow.

Proposed Changes

• Return searchAfter as a base64-encoded cursor on each item.
• Decode searchAfter back into an array before building the Elasticsearch search_after query.
• Automatically append uuid.keyword to the sort when needed.

How to test

• Call a sorted list endpoint and verify each item includes searchAfter.
• Pass the returned searchAfter value back into the next request and confirm the next page is returned.
• Verify pagination still works when the query already contains sorting.