* refactor: update model provider to use ModelFactory for instance management
* refactor: integrate ModelFactory for model instance mapping in tests
* refactor: remove unused imports and clean up test files
* fix latency calc
* feat: add timing context management to AIModel for latency tracking
- Introduced a new TimingContextRaceConditionError to handle race conditions in multi-threaded environments.
- Implemented a timing_context method in AIModel to track request timing and prevent concurrent usage.
- Updated various model classes (LargeLanguageModel, ModerationModel, RerankModel, Speech2TextModel, TextEmbeddingModel, TTSModel) to utilize the new timing context for latency calculations.
- Added tests to validate timing context behavior under concurrent and sequential usage scenarios.
* feat: implement ModelFactory for dynamic model instance creation
- Added ModelFactory class to generate stateless model instances based on provider configurations and model classes.
- Updated PluginRegistration to utilize ModelFactory for managing model instances, enhancing code organization and maintainability.
* feat: add unit tests for model registry and mock model provider
- Introduced a new test file for validating model registry functionality.
- Implemented mock classes for model provider and LLM to facilitate testing.
- Added tests to ensure correct model instance retrieval from the registry.
* apply ruff
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Co-authored-by: Yeuoly <admin@srmxy.cn>
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