ui+api: dedup per-app marks by app_key; auto-refresh runtime

selective-vpn-gui/dashboard_controller.py

@@ -716,12 +716,18 @@ class DashboardController:
         op: str,
         target: str,
         cgroup: str = "",
+        unit: str = "",
+        command: str = "",
+        app_key: str = "",
         timeout_sec: int = 0,
     ) -> TrafficAppMarksResult:
         return self.client.traffic_appmarks_apply(
             op=op,
             target=target,
             cgroup=cgroup,
+            unit=unit,
+            command=command,
+            app_key=app_key,
             timeout_sec=timeout_sec,
         )