GODT-2154: Allow noninteractive mode from launcher.

Makefile

@@ -293,7 +293,7 @@ gofiles: ./internal/bridge/credits.go
 	cd ./utils/ && ./credits.sh bridge
 
 ## Run and debug
-.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug run-qml-preview clean-vendor clean-frontend-qt clean-frontend-qt-common clean
+.PHONY: run run-qt run-qt-cli run-nogui run-cli run-noninteractive run-debug run-qml-preview clean-vendor clean-frontend-qt clean-frontend-qt-common clean
 
 LOG?=debug
 LOG_IMAP?=client # client/server/all, or empty to turn it off
@@ -304,6 +304,9 @@ run: run-qt
 
 run-cli: run-nogui
 
+run-noninteractive: build-nogui clean-vendor gofiles
+	PROTONMAIL_ENV=dev ./${LAUNCHER_EXE} ${RUN_FLAGS} -n
+
 run-qt: build-gui
 ifeq "${TARGET_OS}" "darwin"
 	PROTONMAIL_ENV=dev ${DARWINAPP_CONTENTS}/MacOS/${LAUNCHER_EXE}  ${RUN_FLAGS}

cmd/launcher/main.go

@@ -47,10 +47,12 @@ const (
 	exeName = "bridge"
 	guiName = "bridge-gui"
 
-	FlagCLI      = "--cli"
-	FlagCLIShort = "-c"
-	FlagLauncher = "--launcher"
-	FlagWait     = "--wait"
+	FlagCLI                 = "cli"
+	FlagCLIShort            = "c"
+	FlagNonInteractive      = "noninteractive"
+	FlagNonInteractiveShort = "n"
+	FlagLauncher            = "--launcher"
+	FlagWait                = "--wait"
 )
 
 func main() { //nolint:funlen
@@ -160,16 +162,21 @@ func appendLauncherPath(path string, args []string) []string {
 	return args
 }
 
-// inCLIMode detect if CLI mode is asked.
-func inCLIMode(args []string) bool {
-	return sliceContains(args, FlagCLI) || sliceContains(args, FlagCLIShort)
-}
-
 // sliceContains checks if a value is present in a list.
 func sliceContains[T comparable](list []T, s T) bool {
 	return xslices.Any(list, func(arg T) bool { return arg == s })
 }
 
+// inCLIMode detect if CLI mode is asked.
+func inCLIMode(args []string) bool {
+	return hasFlag(args, FlagCLI) || hasFlag(args, FlagCLIShort) || hasFlag(args, FlagNonInteractive) || hasFlag(args, FlagNonInteractiveShort)
+}
+
+// hasFlag checks if a flag is present in a list.
+func hasFlag(args []string, flag string) bool {
+	return xslices.Any(args, func(arg string) bool { return (arg == "-"+flag) || (arg == "--"+flag) })
+}
+
 // findAndStrip check if a value is present in s list and remove all occurrences of the value from this list.
 func findAndStrip[T comparable](slice []T, v T) (strippedList []T, found bool) {
 	strippedList = xslices.Filter(slice, func(value T) bool {