TerminusDB Issue/2284 set operators

[hoijnet]

Adds client-side support for the new WOQL set operations implemented in TerminusDB.

New WOQL Methods

• set_difference(listA, listB, result) - Compute elements in A but not in B
• set_intersection(listA, listB, result) - Compute common elements
• set_union(listA, listB, result) - Compute combined elements (deduplicated)
• set_member(element, set) - Check membership in a set
• list_to_set(list, set) - Convert list to sorted set with duplicates removed

Files Changed

• lib/query/woqlQuery.js - Added 5 new WOQL builder methods
• integration_tests/woql_set_operations.test.ts - Integration tests

Usage Example

const query = WOQL.and(
  WOQL.eq("v:ListA", [1, 2, 3, 4]),
  WOQL.eq("v:ListB", [2, 4]),
  WOQL.set_difference("v:ListA", "v:ListB", "v:Diff")
);
// Result: Diff = [1, 3]

Testing

All integration tests pass against the TerminusDB server with the corresponding set operations implementation.

[coveralls]

coverage: 58.679% (-0.2%) from 58.84%
when pulling 62f59cd on hoijnet:issue/2284-set-operators
into 7608547 on terminusdb:main.