# TEST
All core functionalities are thoroughly tested.

## Coverage
- **Core Search Engine Initialization**: Checks version files auto-creation and engine loading.
- **Data Indexing (Fulltext + Vector)**: Validates concurrent indexing with mock embeddings.
- **Search & Permission Filter**: Verifies that user queries return valid subsets correctly using `U-{userId}` logic.
- **Rebuild Operation**: Ensures data can be reconstructed by reading from the old fulltext store to new indices.

## Benchmark
N/A