feat: Implement background extraction processor with concurrency control

- Added `ExtractionProcessor` class to handle extraction queue processing in the background.
- Implemented methods for starting, stopping, and queuing extractions with concurrency limits.
- Integrated logging for monitoring the processor's status and actions.
- Created tests for the extraction processor to ensure functionality and error handling.

test: Add unit tests for extraction API endpoints

- Created tests for successful extraction creation, authentication checks, and processor status retrieval.
- Ensured proper responses for authenticated and unauthenticated requests.

test: Implement unit tests for extraction repository

- Added tests for creating, retrieving, and updating extractions in the repository.
- Mocked database interactions to validate repository behavior without actual database access.

test: Add comprehensive tests for extraction service

- Developed tests for extraction creation, service detection, and sound record creation.
- Included tests for handling duplicate extractions and invalid URLs.

test: Add unit tests for extraction background processor

- Created tests for the `ExtractionProcessor` class to validate its behavior under various conditions.
- Ensured proper handling of extraction queuing, processing, and completion callbacks.

fix: Update OAuth service tests to use AsyncMock

- Modified OAuth provider tests to use `AsyncMock` for mocking asynchronous HTTP requests.

app/core/config.py

@@ -52,5 +52,12 @@ class Settings(BaseSettings):
     NORMALIZED_AUDIO_BITRATE: str = "256k"
     NORMALIZED_AUDIO_PASSES: int = 2  # 1 for one-pass, 2 for two-pass
 
+    # Audio Extraction Configuration
+    EXTRACTION_AUDIO_FORMAT: str = "mp3"
+    EXTRACTION_AUDIO_BITRATE: str = "256k"
+    EXTRACTION_TEMP_DIR: str = "sounds/temp"
+    EXTRACTION_THUMBNAILS_DIR: str = "sounds/originals/extracted/thumbnails"
+    EXTRACTION_MAX_CONCURRENT: int = 2  # Maximum concurrent extractions
+
 
 settings = Settings()