Wait briefly after sudo process kills

https://github.com/2dust/v2rayN/issues/9863
Add a short 1-second delay after terminating core processes on Linux, macOS, and in CoreAdminManager so ports and process resources have time to settle before the next step runs.

v2rayN/ServiceLib/Manager/CoreAdminManager.cs

@@ -91,6 +91,8 @@ public class CoreAdminManager
                 .ExecuteBufferedAsync();
 
             await UpdateFunc(false, result.StandardOutput.ToString());
+
+            await Task.Delay(1000); // Wait for a second to ensure the process is killed
         }
         catch (Exception ex)
         {

v2rayN/ServiceLib/Sample/kill_as_sudo_linux_sh

@@ -66,6 +66,11 @@ kill_children "$PID"
 echo "Terminating main process: $PID"
 kill -9 "$PID" 2>/dev/null || true
 
+# Wait a little for process/port resources to be fully released
+FINAL_WAIT_SECONDS=1
+echo "Waiting ${FINAL_WAIT_SECONDS}s for resources to settle..."
+sleep "$FINAL_WAIT_SECONDS"
+
 echo "============================================"
 echo "Process $PID and all its children have been terminated"
 echo "============================================"

v2rayN/ServiceLib/Sample/kill_as_sudo_osx_sh

@@ -63,6 +63,11 @@ kill_descendants "$PID"
 echo "Terminating main process: $PID"
 kill -9 "$PID" 2>/dev/null || true
 
+# Wait a little for process/port resources to be fully released
+FINAL_WAIT_SECONDS=1
+echo "Waiting ${FINAL_WAIT_SECONDS}s for resources to settle..."
+sleep "$FINAL_WAIT_SECONDS"
+
 echo "============================================"
 echo "Process $PID and all its descendants have been terminated"
 echo "============================================"