Add Version service exposing GUI version to frontend

client/ui/services/version.go

@@ -0,0 +1,26 @@
+//go:build !android && !ios && !freebsd && !js
+
+package services
+
+import (
+	"context"
+
+	"github.com/netbirdio/netbird/version"
+)
+
+// Version is the Wails-bound facade exposing build/version metadata to the
+// frontend. Today it only reports the GUI's own version (the daemon version is
+// surfaced separately through the status feed's DaemonVersion field).
+type Version struct{}
+
+// NewVersion constructs the Version service.
+func NewVersion() *Version {
+	return &Version{}
+}
+
+// GUI returns the version of the running UI binary, baked in at build time via
+// the version package's ldflags. Falls back to "development" for un-stamped
+// builds (see version.NetbirdVersion).
+func (v *Version) GUI(_ context.Context) string {
+	return version.NetbirdVersion()
+}