feat: ADR-072 WiFlow SOTA architecture — TCN + axial attention + pose decoder
Pure JS implementation of WiFlow (arXiv:2602.08661) adapted for ESP32:
- TCN temporal encoder (dilated causal conv, k=7, dilation 1/2/4/8)
- Asymmetric spatial encoder (1x3 residual blocks, stride-2)
- Axial self-attention (width + height, 8 heads, 256 channels)
- Pose decoder (adaptive pooling → 17x2 COCO keypoints)
- SmoothL1 + bone constraint loss (14 skeleton connections)
- 1.8M params (1.6 MB at INT8), 198M FLOPs
Integrated with camera-free pipeline (pose proxy labels from
RSSI triangulation + subcarrier asymmetry + vibration)
Co-Authored-By: claude-flow <ruv@ruv.net>
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