fix: correct import order in app.py to comply with linting standards

Co-authored-by: yangm2 <[email protected]>

Author: claude[bot]

backend/tenantfirstaid/app.py

@@ -6,6 +6,10 @@
 from flask_cors import CORS
 import os
 import secrets
+from pathlib import Path
+
+from flask import Flask, jsonify, session
+from flask_cors import CORS
 
 
 if Path(".env").exists():