fix: normalize maintainer input paths

tools/get_maintainer.py

@@ -70,6 +70,7 @@
 matched_maintainers = set()
 
 for file in files_to_check:
+    file = file.replace("\\", "/")
     for section in sections:
         for path in section["files"]:
             # Direct folder matching (Wave-style directory structure)

tools/test_get_maintainer.py

@@ -24,6 +24,27 @@ def test_invocation_outside_repository_root(self):
         self.assertIn("Maintainers to CC:", result.stdout)
         self.assertNotIn("MAINTAINERS file not found", result.stdout)
 
+    def run_script(self, path):
+        return subprocess.run(
+            [sys.executable, str(SCRIPT), path],
+            cwd=ROOT,
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+
+    def test_windows_and_repository_paths_match_same_section(self):
+        unix = self.run_script("front/parser/file.rs")
+        windows = self.run_script(r"front\parser\file.rs")
+
+        self.assertEqual(unix.returncode, 0, unix.stderr)
+        self.assertEqual(windows.returncode, 0, windows.stderr)
+        self.assertEqual(windows.stdout, unix.stdout)
+        self.assertIn("Maintainers to CC:", windows.stdout)
+
+        sibling = self.run_script(r"front\parser-other\file.rs")
+        self.assertIn("Using default", sibling.stdout)
+
 
 if __name__ == "__main__":
     unittest.main()