feat: add WebdPayload with E2E media support and features bitmask

Add webdPayload to WebInfo during connection with:
- supportsE2EImage/Video/Audio/Document = true
- supportsMediaRetry = true
- features bitmask with view-once capability flag

This may enable the WA server to deliver view-once media content
to Baileys companions instead of just <unavailable> placeholders.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Utils/validate-connection.ts

@@ -48,7 +48,23 @@ const getWebInfo = (config: SocketConfig): proto.ClientPayload.IWebInfo => {
 		webSubPlatform = PLATFORM_MAP[config.browser[0] as keyof typeof PLATFORM_MAP]
 	}
 
-	return { webSubPlatform }
+	return {
+		webSubPlatform,
+		webdPayload: {
+			usesParticipantInKey: true,
+			supportsStarredMessages: true,
+			supportsDocumentMessages: true,
+			supportsUrlMessages: true,
+			supportsMediaRetry: true,
+			supportsE2EImage: true,
+			supportsE2EVideo: true,
+			supportsE2EAudio: true,
+			supportsE2EDocument: true,
+			documentTypes: 'application/pdf,image/*,video/*,audio/*',
+			// features bitmask — enables view-once media on companion
+			features: Buffer.from([0x02]),
+		}
+	}
 }
 
 const getClientPayload = (config: SocketConfig) => {