cpp-annote (vendored)

Vendored copy of https://github.com/moonshine-ai/cpp-annote, a C++/ONNX Runtime port of the pyannote community-1 speaker diarization pipeline. Used by the transcriber for opt-in speaker identification (identify_speakers option).

Streaming sessions bound VBx to a sliding window (default 120s via diarization_cluster_window_sec); batch/one-shot diarization uses full history.

Local modifications relative to upstream:

• Removed the cnpy/zlib dependency: the file-based PldaModel::load() NPZ loader in src/plda_vbx.cpp and the PYANNOTE_CPP_PARITY=2 heavy NPZ dump block in src/clustering_vbx.cpp are removed. Only the compiled-in community-1 model data path is used.
• Only the library sources are vendored (no tests, tools, golden data, or cnpy).
• Upstream's bundled dependencies (Eigen, kaldi-native-fbank, kissfft) are moved out of this folder into core/third-party/, alongside the other vendored libraries.

src/community1_ort_embedded.cpp (segmentation + embedding ORT models) and src/community1_cpp_annote_embedded.cpp (PLDA/config data) are generated files tracked with Git LFS.

Licenses: cpp-annote is MIT (see LICENSE). The community-1 diarization models are released by pyannote.ai under the Creative Commons Attribution 4.0 License. Each dependency under core/third-party/ keeps its own license in its folder: Eigen (COPYING.MPL2, MPL2, EIGEN_MPL2_ONLY), kaldi-native-fbank (LICENSE, Apache 2.0), kissfft (COPYING, BSD 3-clause).