GRM-27: fix: CI workflows for rootless runner compatibility

src/gitea_runner_manager/api_clients.py

@@ -107,6 +107,11 @@ class GiteaClient:
 
     # -- pulls / releases --
 
+    def get_pr_labels(self, pr_number: str | int) -> list[dict[str, Any]]:
+        """Fetch labels currently attached to a pull request."""
+        r = self._request("GET", f"/issues/{pr_number}/labels")
+        return r.json()
+
     def merge_pr(self, pr_number: str | int, merge_title: str) -> None:
         payload = {"Do": "squash", "MergeTitleField": merge_title}
         self._request("POST", f"/pulls/{pr_number}/merge", json=payload)