* add: Moji 2 has built-in ESP32-C5 dual band Wi-Fi
* feat: PowerSaveTimer 160 >> 240
* fix(audio): add frame buffering to NoAudioProcessor
On chips where CONFIG_USE_AUDIO_PROCESSOR is unavailable (e.g., ESP32-C5,
which is excluded by Kconfig despite having PSRAM), NoAudioProcessor is used.
The original implementation passed through 160-sample chunks directly, but
the Opus encoder expects 960 samples (60ms @ 16kHz), resulting in frame size
mismatch errors, high CPU usage, and watchdog resets.
Added output_buffer_ to accumulate audio samples until reaching
frame_samples_ (960) before outputting, matching AfeAudioProcessor behavior.
other:
Turn off sleep mode (PowerSaveTimer)
