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Architecture decision records
One decision per file: Context / Decision / Consequences / Status. Recorded 2026-09-25 at the end of the restructure; most describe decisions taken earlier. The system view is in ../DESIGN.md.
| # | Decision |
|---|---|
| 0001 | ESP32 boot: simple boot for plain builds, MCUboot for OTA builds and releases |
| 0002 | ESP32-S3 companions use native USB; start dfu restores USB-Serial-JTAG |
| 0003 | Devicetree overlays: board.overlay first, conf-paired after it |
| 0004 | BLE privacy off on nRF/MG24, on for ESP32-S3 (identity advertising) |
| 0005 | Track Zephyr main, pinned; the migration changes not to undo |
| 0006 | SX126x RX duty cycle and four-layer RX-busy gating |
| 0007 | Adaptive contention window instead of static tx/rx delays |
| 0008 | Storage layout, power-loss writes, BLE bonds in NVS |
| 0009 | WiFi companion boards and contact counts |