- Recover all 50+ source/header/script files from conversation history - Regenerate synthetic binary dataset (ambient vs threat) - Retrain CNN-GRU classifier: 15 epochs, 90.4% train / 100% val accuracy - Export ONNX model with MaxPool1d workaround for opset 13 compatibility - Fix recovered file API mismatches (AudioBuffer, Pipeline, demo_offline) - Replace kiss_fft with inline DFT in fft_utils.cpp (no external lib needed) - Add missing #include <memory> to PIMPL headers - Fix ONNX input layout: [batch, time_frames, n_mels] - Downgrade ORT_API_VERSION 20 -> 17 for local DLL compatibility - Simplify build_demo.bat for Windows MinGW (no yaml-cpp dependency) - Verify demo_offline.exe on validation set: 20/20 correct classifications
