Switch remote deploy to vendored source builds

Move remote deployment to a vendored source bundle built on the target host via Docker so redeploys no longer require local cross-compilation or host Go installation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

vendor/github.com/wailsapp/wails/v2/pkg/runtime/menu.go

@@ -0,0 +1,17 @@
+package runtime
+
+import (
+	"context"
+
+	"github.com/wailsapp/wails/v2/pkg/menu"
+)
+
+func MenuSetApplicationMenu(ctx context.Context, menu *menu.Menu) {
+	frontend := getFrontend(ctx)
+	frontend.MenuSetApplicationMenu(menu)
+}
+
+func MenuUpdateApplicationMenu(ctx context.Context) {
+	frontend := getFrontend(ctx)
+	frontend.MenuUpdateApplicationMenu()
+}