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/internal/frontend/events.go

@@ -0,0 +1,11 @@
+package frontend
+
+type Events interface {
+	On(eventName string, callback func(...interface{})) func()
+	OnMultiple(eventName string, callback func(...interface{}), counter int) func()
+	Once(eventName string, callback func(...interface{})) func()
+	Emit(eventName string, data ...interface{})
+	Off(eventName string)
+	OffAll()
+	Notify(sender Frontend, name string, data ...interface{})
+}