Pushes the ADR-084 novelty sensor down into the ESP32 sensor MCU's
Layer 4 (On-device Feature Extraction) of ADR-081's 5-layer kernel:
sketch + 32-slot ring bank in IRAM, suppress UDP send when novelty
< CONFIG_RV_EDGE_NOVELTY_THRESHOLD (default 0.05).
Wire format bumps to magic 0xC5110007 with two new fields
(suppressed_since_last: u16, gate_version: u8) packed in by narrowing
the existing 16-bit quality_flags to 8-bit (only 8 bits were ever
defined). Frame size stays at 60 bytes; v6 receivers fall back
gracefully.
Stuck-gate self-heal at CONFIG_RV_EDGE_MAX_CONSEC_SUPPRESS (default
50 frames ≈ 10 s) so a wedged threshold can't silently disappear a
node. Default-off Kconfig so existing deployments are unaffected.
Validation commitments:
- ≤ 200 µs sketch insert+score on Xtensa LX7
- ≥ 30% UDP TX-energy reduction in steady-state quiet rooms
- ≤ 5 pp drop on cluster-Pi novelty top-K coverage vs unsuppressed
- ≥ 50% bandwidth reduction in stable-room scenarios
Six-pass implementation plan, default-off Kconfig, QEMU + COM7
hardware-in-loop validation. Honest gaps flagged: Xtensa LX7 POPCNT
absence is conjecture (Pass 2 bench is the falsifier); interaction
with ADR-082's Tentative→Active gate is the likeliest weak point
(Open Q4).
ADR-087 / ADR-088 reserved as pointer stubs at end:
- ADR-087: Pass-4 mesh-exchange scope (cluster↔cluster vs sensor→Pi)
- ADR-088: Firmware-release coordination policy
Status: Proposed. SOTA review by goal-planner agent.
rUv