feat: Training mode, ADR docs, vitals and wifiscan crates
- Add --train CLI flag with dataset loading, graph transformer training,
cosine-scheduled SGD, PCK/OKS validation, and checkpoint saving
- Refactor main.rs to import training modules from lib.rs instead of
duplicating mod declarations
- Add ADR-021 (vital sign detection), ADR-022 (Windows WiFi enhanced
fidelity), ADR-023 (trained DensePose pipeline) documentation
- Add wifi-densepose-vitals crate: breathing, heartrate, anomaly
detection, preprocessor, and temporal store
- Add wifi-densepose-wifiscan crate: 8-stage signal intelligence
pipeline with netsh/wlanapi adapters, multi-BSSID registry,
attention weighting, spatial correlation, and breathing extraction
Co-Authored-By: claude-flow <ruv@ruv.net>
3e06970428