Add python-dotenv and DB test script

requirements.txt

@@ -7,3 +7,4 @@ django-q2>=1.10.0
 jinja2
 whitenoise
 gunicorn
+python-dotenv

test_db.py

@@ -0,0 +1,26 @@
+import psycopg2
+from dotenv import load_dotenv
+import os
+
+print("Loading environment variables...")
+# Load environment variables from .env
+load_dotenv()
+
+# Fetch variables
+DATABASE_URL = os.getenv("DATABASE_URL")
+if not DATABASE_URL:
+    print("No DATABASE_URL found in .env! Using Supabase URL directly for test.")
+    DATABASE_URL = "postgresql://postgres:ngbksZaNkjulikrp@db.tyhlrlpebsgcciglxonc.supabase.co:5432/postgres"
+
+print("Connecting to the database...")
+try:
+    # Connect to the database
+    connection = psycopg2.connect(DATABASE_URL)
+    print("SUCCESS! Database connection string works perfectly!")
+    
+    # Close connection
+    connection.close()
+except Exception as e:
+    print("FAILED to connect!")
+    print("Error:", e)
+    print("\nReminder: Vercel does not support IPv6. If this URL works locally but fails on Vercel, you MUST use the IPv4 Connection Pooler URL from Supabase!")