Update db/mongo.py

db/mongo.py

@@ -1,9 +1,15 @@
 import os
 from motor.motor_asyncio import AsyncIOMotorClient
 
+# Get the MongoDB URI from Hugging Face secrets
 MONGO_URI = os.environ.get("MONGODB_URI")
+
+# Initialize the async MongoDB client
 client = AsyncIOMotorClient(MONGO_URI)
+
+# Automatically get the default database (from the URI)
 db = client.get_default_database()
 
+# Expose collections
 patients_collection = db["patients"]
 results_collection = db["patient_analysis_results"]