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/menu/mac.go

@@ -0,0 +1,12 @@
+package menu
+
+/*
+// DefaultMacMenu returns a default menu including the default
+// Application and Edit menus. Use `.Append()` to add to it.
+func DefaultMacMenu() *Menu {
+	return NewMenuFromItems(
+		AppMenu(),
+		EditMenu(),
+	)
+}
+*/