* Migrate board builds to ESP-IDF 6.0.1
* Document upstream IDF 6 CI blockers
* Use IDF 6 patched registry components
* Fix board-specific ESP-IDF 6 build errors
* Fix remaining ESP-IDF 6 board builds
* Document final ESP-IDF 6 matrix results [skip ci]
* update IDF 6 component releases
* rebase IDF 6 migration and use upstream SSCMA
* Enhance audio input management in AudioService
- Introduced AS_EVENT_AUDIO_INPUT_STOP_REQUEST to manage audio input stopping more effectively.
- Updated AudioService::Start() to clear the new stop request event.
- Modified AudioService::AudioInputTask() to handle the stop request and ensure proper input disabling.
- Adjusted AdcPdmAudioCodec::Start() to reflect lazy input opening, ensuring start/stop operations run in the same task.
* Refactor audio codec management and configuration
- Added output_device_opened_ flag to track the state of the output device in Es8388 and Es8389 codecs.
- Updated EnableOutput method to prevent unnecessary device reopening and added mute functionality to manage audio output more effectively.
- Enhanced error handling in Es8311AudioCodec by ensuring proper closure and deletion of the codec device.
- Adjusted sample rates in board configurations for atk-dnesp32s3-box2 to 24000 Hz and introduced AUDIO_CODEC_USE_MCLK for improved clock management.
* Update build configurations and documentation for ESP-IDF 6 compatibility
- Added container specification for the build workflow using espressif/idf:v6.0.1.
- Updated the version of the espressif/esp_video component to ^2.3.0.
- Enhanced documentation to clarify the support status of ESP32-P4 variants, specifying that legacy Rev < 3 variants are excluded from the IDF 6 matrix.
- Adjusted board configurations to include IDF version constraints and necessary SDK configurations for legacy support.
- Improved handling of YUV formats in EspVideo to maintain compatibility with previous versions.
* Implement playback drained event handling in Application
- Added MAIN_EVENT_PLAYBACK_DRAINED to manage playback state transitions.
- Introduced callbacks for playback drained events in AudioService to trigger listening state changes.
- Refactored Application::Run() to handle deferred listening start based on playback queue status.
- Enhanced audio processing logic to prevent audio truncation during state changes.
- Updated related methods to ensure proper wake word detection configuration during listening mode.
* Fix variant selection shell in CI
* Update project version to 2.4.0 and adjust component dependencies
- Bump project version in CMakeLists.txt to 2.4.0.
- Change espressif/esp_video component version to ^2.0.1 in idf_component.yml.
- Modify AUDIO_INPUT_REFERENCE setting in config.h to false for m5stack-core-s3.
- Remove unnecessary infinite loops in xmini_c3_board.cc during initialization.
---------
Co-authored-by: Xiaoxia <terrence.huang@tenclass.com>