Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: wassname

src/openrouter/utils/retries.py

@@ -101,8 +101,8 @@ def _parse_retry_after_header(response: httpx.Response) -> Optional[int]:
 def _matches_retry_status_code(response: httpx.Response, status_code: str) -> bool:
     if "X" in status_code.upper():
         code_range = int(status_code[0])
-        status_major = response.status_code / 100
-        return code_range <= status_major < code_range + 1
+        status_major = response.status_code // 100
+        return code_range == status_major
 
     return response.status_code == int(status_code)