- Introduced `format-check` for verification without modification in `llm-gateway` and `knowledge-base` Makefiles.
- Updated `validate` to include `format-check`.
- Added `format-all` to root Makefile for consistent formatting across all components.
- Unexported `VIRTUAL_ENV` to prevent virtual environment warnings.
- Refactored database batch operations to ensure transaction atomicity and simplify nested structure.
- Added `Makefile` for `knowledge-base` and `llm-gateway` modules to streamline development workflows.
- Simplified `Dockerfile` for `llm-gateway` by removing multi-stage builds and optimizing dependencies.
- Improved code readability in `collection_manager` and `failover` modules with refined logic.
- Minor fixes in `test_server` and Redis health check handling for better diagnostics.
