Agent-Harmony Python bindings

Copyright 2026 Michal Szczygiel and Antoni Zieciak.

Includes Agent-Harmony by Antoni Zieciak, licensed under the MIT License.
See LICENSE-UPSTREAM for the original copyright and license notice.

The native extension incorporates nanobind, licensed under the BSD 3-Clause
License. Its bundled tsl::robin_map is licensed under the MIT License.
See LICENSE-NANOBIND for both copyright and license notices.
