Fix validation import: move to top-level and trigger rebuild

- Move save_validation_to_db import to module level (line 22)
- Remove redundant import from inside validate_prediction function
- Add version number to force HF Spaces rebuild
- Ensures proper function resolution at startup

main.py

@@ -1,6 +1,7 @@
 """
 FastAPI Backend for Virus Prediction System
 Optimized for Hugging Face Spaces Free Tier with MongoDB Atlas
+Version: 1.0.1
 """
 
 from fastapi import FastAPI, HTTPException, status
@@ -20,7 +21,7 @@ from model_handler import (
 )
 
 # Database imports
-from data_handler import save_prediction_to_db, get_db_health, get_prediction_stats
+from data_handler import save_prediction_to_db, save_validation_to_db, get_db_health, get_prediction_stats
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -351,8 +352,6 @@ async def validate_prediction(validation: ValidationRequest):
     - Stored in MongoDB for analysis
     """
     try:
-        from data_handler import save_validation_to_db
-        
         # Map virus ID to virus name
         actual_virus_name = ""
         actual_virus_key = ""