- Added new API routes for fetching dataset samples by ID, including validation and error handling.
- Implemented `getDatasetSampleHandler` to manage dataset access and sample query execution.
- Introduced `executeSampleQuery` utility for executing read-only SQL queries with retry logic.
- Created new schemas for dataset sample request and response types.
- Updated existing dataset access control logic to ensure proper permissions are enforced.
- Added tests for the new dataset sample functionality to ensure reliability.
dal