Added umu download and repair for missing components on install, update and manual repair.

install.sh

@@ -35,14 +35,17 @@ PYTHON_BIN="${PTLINUX_PYTHON:-python3}"
 DRY_RUN=0
 RUN_DOCTOR=1
 INSTALL_DEPENDENCIES=1
+RUN_RUNTIME_BOOTSTRAP=1
 
 usage()
 {
 	printf '%s\n' \
-		"Usage: ./install.sh [--install-dir PATH] [--dry-run] [--skip-deps] [--skip-doctor]" \
+		"Usage: ./install.sh [--install-dir PATH] [--dry-run] [--skip-deps] [--skip-doctor] [--skip-runtime-bootstrap]" \
 		"" \
 		"  --install-dir PATH  Store the app, managed game, and runtime data at PATH." \
-		"                      Default: ~/Games/PristontaleEU"
+		"                      Default: ~/Games/PristontaleEU" \
+		"  --skip-runtime-bootstrap" \
+		"                      Do not prepare the verified UMU helper during install."
 }
 
 while (( $# > 0 ))
@@ -75,6 +78,10 @@ do
 			INSTALL_DEPENDENCIES=0
 			shift
 			;;
+		--skip-runtime-bootstrap)
+			RUN_RUNTIME_BOOTSTRAP=0
+			shift
+			;;
 		-h|--help)
 			usage
 			exit 0
@@ -325,6 +332,17 @@ then
 fi
 
 printf '%s\n' "Launcher files installed."
+RUNTIME_BOOTSTRAP_READY=1
+if (( RUN_RUNTIME_BOOTSTRAP == 1 ))
+then
+	if ! "${BIN_HOME}/pristontale-eu" runtime-bootstrap
+	then
+		RUNTIME_BOOTSTRAP_READY=0
+	fi
+else
+	printf '%s\n' "Steam Runtime helper preparation skipped."
+fi
+
 DOCTOR_READY=1
 if (( RUN_DOCTOR == 1 ))
 then
@@ -356,6 +374,14 @@ case ":${PATH:-}:" in
 		;;
 esac
 
+if (( RUNTIME_BOOTSTRAP_READY == 0 ))
+then
+	printf '%s\n' \
+		"Launcher files were installed, but the Steam Runtime helper could not be prepared." \
+		"Retry with: ${BIN_HOME}/pristontale-eu runtime-bootstrap" >&2
+	exit 1
+fi
+
 if (( DOCTOR_READY == 0 ))
 then
 	printf '%s\n' \