Refactor `SessionIdManager` module: rename `session_id_manager.py` to `session_manager.py` and update imports accordingly.

Refactor session ID handling: replace `current_session_id` with `SessionIdManager` for thread-safe management, update related imports and references.

Refactor `__init__.py` in TTS runtime: streamline `__all__` handling, improve logging for import failures, and enhance maintainability of module exports.

Serve static frontend assets through FastAPI: mount static files and replace root endpoint response with `index.html`.

Handle `UnboundLocalError` in punctuation model lookup: add exception handling to ensure stability during transcription.

Remove `VoiceDialogue` API, models, and settings: clean up unused modules and dependencies for the decommissioned service.

Refactor assets files

Refactor directories across services: rename `audio_generator` to `generators`, `asr` to `recognizers`, and update all import paths for consistency and improved module organization.

Refactor imports across services: replace `services.core` module references with `core` for consistency and maintainability; remove unused `Queue` imports.

Refactor imports in TTS and ASR modules: switch to absolute imports for improved clarity and maintainability.

Remove trailing whitespace in `audio_generator/manager.py` and `asr/manager.py` for improved code cleanliness and consistency.

Refactor ASR manager: remove `_get_asr_supported_languages`, replace static language mapping with `supported_langs` attribute, and update dynamic module import to use `importlib.util` for improved maintainability.

Refactor `audio_generator/manager.py`: streamline imports, remove redundant modules in `register_all_tts`, and adjust dynamic import spec for improved maintainability.

Adjust sorting priority in `audio_generator/models/base.py`: prioritize `language_bonus` over `priority` for config selection.

Refactor TTS module loading in `audio_generator/manager.py`: replace `importlib.import_module` with `importlib.util` for improved dynamic import handling and error logging.

Update TTS speaker configuration: replace static mapping with dynamic retrieval, add available speaker listing, and update CLI argument parsing for improved flexibility and maintainability.

Refactor sentence processing in `text_generator.py`: centralize sentence end mark sets, streamline `_should_end_sentence` logic, and eliminate redundant parameter passing for improved clarity and maintainability.

Refactor imports in `main.py`: reorder modules for better readability and remove redundant `load_third_party` call.

Add Kokoro TTS support: integrate new TTS model, configuration, and runtime components for enhanced multilingual voice synthesis.

Refactor ASR routes: replace `fastapi_request.state` with `fastapi_request.app.state` for consistent application-level state management.

Enhance TTS model handling: add dynamic status tracking, model downloading, and default system configuration initialization with API updates to manage active and default TTS models effectively.

Comment out logging statements in `audio_player.py` to disable performance logs and streamline runtime output.

Refactor ASR routes and services: implement instance creation tracking with background task support, enhance `get_supported_languages` with current ASR language, and clean up unused schemas and routes for simplified management.

Remove `SystemConfig` and `SystemStartRequest` imports and clean up `__all__` in `schemas/__init__.py` for simplified schema management.

Remove `SystemConfig` and `SystemStartRequest` models and clean up related API routes and background tasks for simplified system startup and management.

Enhance system management and audio capture services: implement `SystemStatusResponse` updates with detailed state tracking, add `audio_capture` service creation and lifecycle management, and refactor API `/system` routes for improved status and control handling.

Extend TTS registry functionality and integrate default system configurations: implement prioritization logic, language preference handling, and fallback mechanisms in `TTSConfigRegistry`; refactor service factory and lifespan management to support dynamic TTS selection and initialization.

Introduce core module for API lifecycle management: add configuration, service factories, service manager, and lifespan handlers to streamline application startup, shutdown, and service orchestration.

Add system utilities and initialize core modules: implement `get_system_language` and `get_system_info`, update API startup with system defaults, and integrate ASR, LLM, and speech modules for enhanced functionality.

Refactor core queue initialization: move queue definitions to `constants.py` and clean up redundant imports in `main.py` for better modularity.

Introduce initial API structure for VoiceDialogue: add dependencies, middleware, and routes for ASR, TTS, system, and voice modules.

Refactor ASR module: introduce modular structure with ASR interface, implement FunASR and Whisper clients, add registry, and consolidate utility functions for enhanced maintainability and extensibility.

Refactor TTS module: rename `tts_manager` to `manager` for consistency across imports and structure.

Refactor speech processing: add type hint for `_process_active_voice_frame` and replace `max()` with `np.max()` for consistency.

Refactor TTS audio generation: rename queues for clarity, update `TTSAudioGenerator` initialization, and enhance docstrings for better maintainability.

Refactor TTS architecture: implement runtime interface, TTS manager, universal registry, and factory pattern to support multiple engines.

Refactor voice model structure: extract MoYoYo-specific configurations and introduce universal TTS registry.

Remove unused `prompt_semantic` and `reference_spec` configuration parameters from voice model definitions.

Add thread readiness checks and is_ready property across services

Using FunASR quantized model.

Add multilingual support and optimize LLM pipeline configuration.

Add descriptions for Chinese voice models.

Remove unused configuration parameters and conversation templates.

Integrate FunASR service.

First commit.