fix: resolve CI workflow failures

- Fix mypy no-any-return error by casting comparison to bool
- Update pre-commit config to only check pathao package files
- Prevents mypy from checking tests and examples in pre-commit hooks

Author: mojnomiya

.pre-commit-config.yaml

@@ -24,4 +24,4 @@ repos:
     hooks:
       - id: mypy
         additional_dependencies: [types-requests]
-        args: [--config-file=mypy.ini]
+        files: ^pathao/.*\.py$

pathao/http_client.py

@@ -214,7 +214,7 @@ def _should_retry(self, exception: Exception, attempt: int) -> bool:
 
         # Retry on server errors (5xx)
         if isinstance(exception, HTTPError):
-            return exception.response.status_code >= 500
+            return bool(exception.response.status_code >= 500)
 
         # Retry on general request exceptions
         if isinstance(exception, RequestException):