Improve terminal handling and make server arg more helpful

main.go

@@ -253,6 +253,17 @@ Debug output goes to stderr (kubectl surfaces this to the terminal):
 				return fmt.Errorf("--server is required")
 			}
 
+			// prepend https if no scheme is given, for user convenience
+			if !strings.Contains(server, "://") {
+				server = "https://" + server
+			}
+
+			// append port 8443 if no port is given
+			parts := strings.Split(server, ":")
+			if len(parts) == 2 {
+				server += ":8443"
+			}
+
 			logf := func(format string, a ...interface{}) {
 				if debugFlag {
 					fmt.Fprintf(os.Stderr, "[ward] "+format+"\n", a...)