fix(carousel): remove viewOnceMessage wrapper, send interactiveMessage directly

Pastorini's working implementation confirms carousels must be sent as
direct interactiveMessage at the message root level, NOT wrapped in
viewOnceMessage. The viewOnce wrapper prevented rendering on WhatsApp
Web and delivery to Apple/iOS users.

https://claude.ai/code/session_018DkDxsjWzM131jy3ivWjZp

src/Utils/messages.ts

@@ -653,14 +653,11 @@ export const generateCarouselMessage = async (
 		}
 	}
 
-	// Wrap in viewOnceMessage for MD (multi-device) compatibility
-	// This ensures Web/Desktop clients can render the carousel
+	// Return interactiveMessage directly (NOT wrapped in viewOnceMessage)
+	// Pastorini's working implementation confirms carousels must be sent
+	// as direct interactiveMessage, not wrapped in viewOnceMessage
 	return {
-		viewOnceMessage: {
-			message: {
-				interactiveMessage
-			}
-		}
+		interactiveMessage
 	}
 }
 
@@ -1157,8 +1154,8 @@ export const generateWAMessageContent = async (
 		}
 		// Pass options for media processing if cards have images/videos
 		const generated = await generateCarouselMessage(carouselOptions, options)
-		m.viewOnceMessage = generated.viewOnceMessage
-		options.logger?.info('Sending carousel with viewOnceMessage wrapper (plain object, no proto conversion)')
+		m.interactiveMessage = generated.interactiveMessage
+		options.logger?.info('Sending carousel as direct interactiveMessage (plain object, no proto conversion)')
 		// Return the plain JS object directly WITHOUT calling WAProto.Message.fromObject()
 		// This matches Pastorini's working approach where plain objects are passed directly
 		// to relayMessage. The fromObject() conversion can corrupt nested carousel structures