rUv 6f23e89909 fix: deep review optimizations — firmware + server ...

* feat(signal): subcarrier importance weighting via mincut partition (Phase 1)

Adds subcarrier_importance_weights() to ruvector signal crate — converts
mincut partition into per-subcarrier float weights (>1.0 for sensitive,
0.5 for insensitive subcarriers).

Sensing server now uses weighted mean/variance in extract_features_from_frame
instead of treating all 56 subcarriers equally. This emphasizes body-motion-
sensitive subcarriers and reduces noise from static multipath.

Expected: ~26% reduction in keypoint jitter (±15cm → ±11cm RMS).

284 tests pass (191 trainer + 51 lib + 18 vital_signs + 16 dataset + 8 multi_node).

Co-Authored-By: claude-flow <ruv@ruv.net>

* fix(firmware): stack overflow risk + tick-rate independence (review findings)

Critical fixes from deep review:

1. **Stack overflow prevention**: Moved BPM scratch buffers (br_buf, hr_buf)
   from stack to static storage in both process_frame() and
   update_multi_person_vitals(). Combined stack was ~6.5-7.5 KB of 8 KB
   limit — now reduced by ~4 KB to safe margins.

2. **Tick-rate independence**: Post-batch yield now uses
   pdMS_TO_TICKS(20) with min-1 guard instead of raw vTaskDelay(2).
   Previously assumed 100Hz tick rate.

3. **EDGE_BATCH_LIMIT to header**: Moved from local const to
   edge_processing.h #define for configurability.

Firmware builds clean at 843 KB.

Co-Authored-By: claude-flow <ruv@ruv.net>

* fix(server): stale node eviction, remove unsafe pointer (review findings)

Critical fixes from deep review:

1. **Stale node eviction**: node_states HashMap now evicts nodes with no
   frame for >60 seconds, every 100 ticks. Prevents unbounded memory
   growth and stale smoothing data when nodes are replaced.

2. **Remove unsafe raw pointer**: Replaced the unsafe raw pointer to
   adaptive_model (used to break borrow checker deadlock with
   node_states) with a safe .clone() before the mutable borrow.
   AdaptiveModel derives Clone so this is a clean copy.

284 tests pass, zero failures.

Co-Authored-By: claude-flow <ruv@ruv.net>

2026-03-30 13:31:07 -04:00

..

esp32-csi-node

fix: deep review optimizations — firmware + server

2026-03-30 13:31:07 -04:00

esp32-hello-world

feat: happiness scoring pipeline + ESP32 swarm with Cognitum Seed (#285)

2026-03-20 18:46:34 -04:00