- Implemented endpoints for normalizing all sounds, normalizing sounds by type, and normalizing a specific sound by ID in the sounds API.
- Added dependency injection for the SoundNormalizerService.
- Included role-based access control to restrict normalization actions to admin users.
- Created comprehensive test cases for the new normalization endpoints, covering success scenarios, parameter handling, and error cases.
- Removed redundant test file for sound normalizer endpoints as tests are now integrated into the main sound endpoints test suite.
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