File test_task_pool.cpp

tests/unit/engine/Poseidon/Core/test_task_pool.cpp:None–None

// Unit tests for TaskPool — Phase 1 worker-pool foundation.  Tests
// land before the implementation so the contract is pinned by the
// suite, not by the first caller.  Covered pins:
//   - ParallelFor with N work items invokes work for every index