rUv eaedfded6f fix(train): wire wifi-densepose-signal into the pipeline; correct MODEL_CARD env-sensor claim (#536) ... Addresses three findings from the 2026-05-11 training-pipeline audit: #1/#2 — `wifi-densepose-signal` was a phantom dependency of `wifi-densepose-train` (listed in Cargo.toml, never imported), and vitals/CSI signal features were absent from the pipeline. New module `wifi_densepose_train::signal_features`: `extract_signal_features(&Array4<f32>, &Array4<f32>) -> Array1<f32>` (and the convenience method `CsiSample::signal_features()`) runs a windowed observation's centre frame through `wifi_densepose_signal::features::FeatureExtractor`, producing a fixed-length (FEATURE_LEN=12) amplitude / phase-coherence / PSD feature vector — the hook for a future vitals / multi-task supervision head (breathing- and heart-rate-band power are read off the PSD summary). The vector is produced on demand and is not yet fed back into the loss; wiring it as a training target is the documented follow-up. `wifi-densepose-signal` is now an actually-used dependency. 5 new tests (2 unit in signal_features.rs, 3 integration in tests/test_dataset.rs); existing wifi-densepose-train tests unchanged and green. #3 — `docs/huggingface/MODEL_CARD.md` presented PIR/BME280 environmental-sensor weak-label fine-tuning as a current capability; there is no env-sensor ingestion in the training pipeline. Marked that path as planned/not-implemented in the training-steps list and the data-provenance section. (#5 — README's "92.9% PCK@20" overclaim — fixed separately in PR #535.) CHANGELOG updated.		2026-05-11 23:40:55 -04:00
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MODEL_CARD.md	fix(train): wire wifi-densepose-signal into the pipeline; correct MODEL_CARD env-sensor claim (#536)	2026-05-11 23:40:55 -04:00