fix: conditional requests import in container tests

tests/test_container_integration.py

@@ -20,7 +20,15 @@ import subprocess
 import time
 
 import pytest
-import requests
+
+# Skip module entirely if integration tests are disabled
+# This allows the file to be collected without requiring 'requests'
+_INTEGRATION_ENABLED = bool(os.environ.get("FLASKPASTE_INTEGRATION"))
+
+if _INTEGRATION_ENABLED:
+    import requests
+else:
+    requests = None  # type: ignore[assignment]
 
 # Configuration
 CONTAINER_NAME = "flaskpaste-test"
@@ -47,7 +55,7 @@ def should_run_integration_tests() -> bool:
     Integration tests only run when FLASKPASTE_INTEGRATION=1 environment
     variable is set AND a container runtime is available.
     """
-    if not os.environ.get("FLASKPASTE_INTEGRATION"):
+    if not _INTEGRATION_ENABLED:
         return False
     return get_container_runtime() is not None