Fix password not being set when regenerating .env in setup.sh

Remove the database init marker when regenerating .env file so that
the docker entrypoint will re-run password initialization with the
new INITIAL_PASSWORD value on next container start.

setup.sh

@@ -79,6 +79,10 @@ CORS_ORIGINS=*
 EOF
 
     echo "✓ .env file created with secure keys"
+
+    # Remove the init marker so the password gets set on next container start
+    rm -f data/.db_initialized
+    echo "✓ Password will be updated on next container start"
 fi
 
 # Create required directories