Tags: arcadien/tinySensor

docs: update tech-debt audit for 2026-06-16 fixes

Mark C4, C7, C10, D8, D9, I4 (fully), Doc7 as resolved.
Add MAGI-found items M1/M2/M3 (already resolved) retroactively.
Cumulative score relieved: 307 points across all sessions.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

Robot is back, using Lacrosse(c) implementation

Note: the battery voltage still not work :(

hardware: Better ground plane