Add documentation section and clean up formatting

- Add clear section header for ClickZetta configuration
- Improve code organization and readability
- All lint checks should pass with latest fixes

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

api/core/rag/datasource/vdb/clickzetta/clickzetta_vector.py

@@ -19,6 +19,9 @@ from models.dataset import Dataset
 logger = logging.getLogger(__name__)
 
 
+# ClickZetta Lakehouse Vector Database Configuration
+
+
 class ClickzettaConfig(BaseModel):
     """
     Configuration class for Clickzetta connection.