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

@@ -1,8 +1,9 @@
+import os
+import secrets
 from pathlib import Path
+
 from flask import Flask, jsonify, session
 from flask_cors import CORS
-import os
-import secrets
 
 
 if Path(".env").exists():