fix(list-message): use correct biz node structure for listMessage delivery

The listMessage was getting error 405 because the biz node used
'interactive > native_flow' structure which is wrong for list messages.
Changed to use 'biz > list (type=product_list, v=2)' structure which
matches the Pastorini reference implementation and works on both
smartphone and web WhatsApp.

Changes:
- Differentiate biz node based on message type (list vs interactive)
- For listMessage/nativeList: use biz > list (type=product_list, v=2)
- For other interactive: keep biz > interactive > native_flow
- Skip bot node injection for list messages
- All listMessages (SINGLE_SELECT + PRODUCT_LIST) now get biz node
- Add diagnostic logging matching Pastorini format

https://claude.ai/code/session_01SJdSHiUxtwzV8bb5dedodb

src/Socket/messages-send.ts

@@ -628,11 +628,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 		} else if (message.templateMessage) {
 			return 'template'
 		} else if (message.listMessage) {
-			// Check if it's a product list (uses PRODUCT_LIST type)
+			// All listMessages (SINGLE_SELECT and PRODUCT_LIST) need biz > list node
-			// Product lists from WhatsApp Business catalog don't need biz node injection
-			if (message.listMessage.listType === proto.Message.ListMessage.ListType.PRODUCT_LIST) {
-				return undefined // No biz node needed for catalog product lists
-			}
 			return 'list'
 		} else if (message.buttonsResponseMessage) {
 			return 'buttons_response'
@@ -675,10 +671,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 			} else if (innerMessage.templateMessage) {
 				return 'template'
 			} else if (innerMessage.listMessage) {
-				// Product lists from WhatsApp Business catalog don't need biz node injection
+				// All listMessages (SINGLE_SELECT and PRODUCT_LIST) need biz > list node
-				if (innerMessage.listMessage.listType === proto.Message.ListMessage.ListType.PRODUCT_LIST) {
-					return undefined // No biz node needed for catalog product lists
-				}
 				return 'list'
 			} else if (innerMessage.buttonsResponseMessage) {
 				return 'buttons_response'
@@ -1206,6 +1199,13 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 					'[DEBUG] Interactive message structure'
 				)
 
+				// Log message check for biz node (similar to Pastorini)
+				const messageKeys = Object.keys(message).filter(k => (message as any)[k] != null)
+				logger.info(
+					{ hasInteractive: !!interactiveMsg, messageKeys },
+					'[BIZ NODE] Checking message for biz node...'
+				)
+
 				logger.warn(
 					{ msgId, buttonType, to: destinationJid, enableInteractiveMessages, isCatalog },
 					'[EXPERIMENTAL] Injecting biz node for interactive message - may cause ban'
@@ -1215,9 +1215,34 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				metrics.interactiveMessagesSent.inc({ type: buttonType })
 
 				try {
-					// Use nested structure: biz > interactive > native_flow
+					// Differentiate biz node structure based on message type
-					// All interactive messages (buttons, lists, carousels) use native_flow
+					// isListMessage: true for direct listMessage OR nativeFlowMessage with single_select
-					// Testing showed that type='list' causes error 479
+					const isListMessage = buttonType === 'list' || isListNativeFlow(message)
+
+					if (isListMessage) {
+						// For listMessage: use biz > list (type=product_list, v=2)
+						// This is the format that works on both phone and web WhatsApp
+						// Reference: Pastorini implementation
+						;(stanza.content as BinaryNode[]).push({
+							tag: 'biz',
+							attrs: {},
+							content: [
+								{
+									tag: 'list',
+									attrs: {
+										type: 'product_list',
+										v: '2'
+									}
+								}
+							]
+						})
+						logger.info(
+							{ msgId, to: destinationJid },
+							'[BIZ NODE] Added list biz node (type=product_list, v=2) for listMessage'
+						)
+					} else {
+						// For other interactive messages (native_flow, buttons, templates, carousels):
+						// use biz > interactive > native_flow
 						const interactiveType = 'native_flow'
 						;(stanza.content as BinaryNode[]).push({
 							tag: 'biz',
@@ -1241,11 +1266,12 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 								}
 							]
 						})
+					}
 
 					// For private 1:1 chats, add bot node (required for some interactive messages to render)
 					// Only inject for actual user JIDs, not broadcasts, newsletters, or Meta AI bots
-					// IMPORTANT: Carousels and catalog messages should NOT have bot node
+					// IMPORTANT: Carousels, catalog messages, and list messages should NOT have bot node
-					// as they are regular interactive messages, not bot messages
+					// List messages use biz > list structure and don't need bot node
 					// NOTE: Only for regular JIDs, NOT hosted JIDs (to avoid interference with interactive messages)
 					const isPrivateUserChat = (
 						isPnUser(destinationJid) ||
@@ -1253,7 +1279,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 						destinationJid?.endsWith('@c.us')
 					) && !isJidBot(destinationJid)
 
-					if (isPrivateUserChat && !isCarousel && !isCatalog) {
+					if (isPrivateUserChat && !isCarousel && !isCatalog && !isListMessage) {
 						;(stanza.content as BinaryNode[]).push({
 							tag: 'bot',
 							attrs: { biz_bot: '1' }
@@ -1272,6 +1298,11 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 							{ msgId, to: destinationJid, buttonType },
 							'[EXPERIMENTAL] Skipping bot node for catalog message (with biz node)'
 						)
+					} else if (isListMessage) {
+						logger.debug(
+							{ msgId, to: destinationJid, buttonType },
+							'[BIZ NODE] Skipping bot node for list message (uses list biz node)'
+						)
 					}
 
 					// Track success and latency after message is sent
@@ -1360,6 +1391,10 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				;(stanza.content as BinaryNode[]).push(...additionalNodes)
 			}
 
+			// Log stanza content tags for debugging (similar to Pastorini format)
+			const contentTags = (stanza.content as BinaryNode[]).map((n: BinaryNode) => n.tag)
+			logger.info({ msgId, contentTags }, `[STANZA] Content tags: ${JSON.stringify(contentTags)}`)
+
 			logger.debug({ msgId }, `sending message to ${participants.length} devices`)
 
 			await sendNode(stanza)