target.h — declares meck_audio_route_amp() and meck_audio_codec_init() in the bridge (54-55), guarded by HAS_ES8311_AUDIO, ready for the alarm/voice paths to reuse later.
target.cpp — includes ES8311.h (6) and defines both helpers where board and the codec driver are visible: route+amp (100-102), and the once-only es8311_init_44100_16bit() (108-110).
Audiobookplayerscreen.h — forward-declares both (54-55); ensureI2SInit() now does route+amp and the 5-arg setPinout with MCLK on MAX (268-270); and meck_audio_codec_init() runs right after connecttoFS (1142). The Pro path is untouched.
pelgraine