- lib/lxst_audio/{packet,encoded}_ring_buffer.cpp use malloc/free without
including <cstdlib>. macOS leaks it via header transitivity but Linux
clang is stricter — real portability bug surfaced by the new pytest CI.
- microReticulum native17 tests link against system libbz2 via the fork's
pre:link_bz2.py script. Ubuntu runners need libbz2-dev installed.
- Add ES7210 I2C address and I2S mic capture pin definitions
- Add ring/hangup tone helpers to Tone library
- Add lxst_audio library scaffold
- Add Codec2 dependency to platformio.ini
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>