fix: resolve all mypy type errors

tests/test_container_integration.py

@@ -18,6 +18,7 @@ import os
 import shutil
 import subprocess
 import time
+from typing import Any
 
 import pytest
 
@@ -25,10 +26,9 @@ import pytest
 # This allows the file to be collected without requiring 'requests'
 _INTEGRATION_ENABLED = bool(os.environ.get("FLASKPASTE_INTEGRATION"))
 
+requests: Any = None
 if _INTEGRATION_ENABLED:
-    import requests
-else:
-    requests = None  # type: ignore[assignment]
+    import requests  # type: ignore[import-untyped,no-redef]
 
 # Configuration
 CONTAINER_NAME = "flaskpaste-test"

tests/test_paste_management.py

@@ -95,7 +95,9 @@ def create_paste(
 
     response = client.post("/", data=content, headers=headers)
     assert response.status_code == 201
-    return response.get_json()["id"]
+    data = response.get_json()
+    assert data is not None
+    return str(data["id"])
 
 
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