Merge branch 'feat/ark_cert_dir' into 'integration_2025-09-04_1045806191106'

feat: [development task] ark runtime (1624140)

See merge request iaasng/volcengine-python-sdk!789

Author: BitsAdmin

volcenginesdkarkruntime/_client.py

@@ -515,7 +515,7 @@ def _load_cert_locally(self, ep: str) -> str | None:
         return None
 
     def _init_local_cert_cache(self):
-        self._cert_storage_path = "/tmp/ark/certificates"
+        self._cert_storage_path = os.path.expanduser("~/.ark/certificates")
         self._cert_expiration_seconds = 14 * 24 * 60 * 60  # 14 days
 
         if not os.path.exists(self._cert_storage_path):