Fix missing DEVIL_API_KEY in tests

Author: mhajder

tests/conftest.py

@@ -1,21 +1,23 @@
 from __future__ import annotations
 
+import importlib
 import os
 import sys
 from pathlib import Path
 
 import pytest
 
-from app.auth import AUTH_FAILURE_TRACKER
-
-# Ensure project root (where 'app' package resides) is on sys.path
+# Adjust sys.path early so subsequent imports resolve
 ROOT = Path(__file__).resolve().parent.parent
 if str(ROOT) not in sys.path:
     sys.path.insert(0, str(ROOT))
 
-# Provide default API key for any imports needing it
+# Provide default API key before importing modules that validate it at import time
 os.environ.setdefault("DEVIL_API_KEY", "devil")
 
+# Lazy import after env var is ensured while keeping all import statements grouped at the top
+AUTH_FAILURE_TRACKER = importlib.import_module("app.auth").AUTH_FAILURE_TRACKER
+
 
 @pytest.fixture(autouse=True)
 def reset_auth_tracker():