Legacy Current-Cleanup Archive
These files were moved out of the active docs during the June 2026 documentation cleanup.
They are retained for historical reference only. Current source-of-truth docs are:
docs/ARCHITECTURE.mddocs/HARDWARE.mddocs/ROADMAP.mddocs/API.mddocs/dashboard-esp32s3.md
Do not use the archived Pico/UART wiring or handoff notes for current implementation work.