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Roadmap

v1 (this scaffold)

M0 Repo skeleton, HAL interfaces, host build + tests
M1 SX127x driver, MAC LBT, duty cycle
M2 AES-CCM, KDF, key store, replay window
M3 Mesh: HELLO, AODV-lite, TTL, dedup
M4 ACK / retransmit / fragmentation
M5 Messaging API + serial CLI

v2

M6 ESP gateway WiFi bridge + JSON/WS API + dashboard
M7 IDS / trust score / blacklist
M8 Localization (RSSI multilateration)

v3

M9 Voice PTT (Codec2 on ESP, ADPCM on AVR)
M10 Sleep / power management, adaptive TX power
M11 Signed OTA (ESP)
M12 Group channels with rotated GroupKey, key escrow via admin

v4 (research)

Delay-tolerant store-and-forward with offline buckets
Opportunistic data caching for popular broadcasts
TOF-assisted localization (SF7, short range)
Lightweight TLS-PSK alternative for gateway uplink