feat: centralized LID→PN normalization for all emitted events (#246)

* feat: centralized LID→PN normalization for all emitted events

WhatsApp's server increasingly uses LID (Linked ID) as the primary
addressing format. Consumers expect phone numbers (PN),
not opaque LID identifiers. This adds comprehensive LID→PN resolution
across all ev.emit() paths so downstream consumers always receive PN.

Key changes:

- Add resolveLidToPn() and normalizeKeyLidToPn() centralized helpers
  in process-message.ts for consistent LID→PN resolution

- normalizeMessageJids() fast path: use alt JID directly from stanza
  attributes (zero I/O, eliminates race condition with LIDMappingStore)

- Await storeLIDPNMappings() before normalization in message receipt
  flow (was fire-and-forget, could race with subsequent getPNForLID)

- Normalize LID→PN in all event emission points:
  * messages.upsert (keys, nested reaction/poll keys, participantAlt)
  * presence.update (jid + participant)
  * message-receipt.update (key + userJid)
  * contacts.update (picture notifications)
  * blocklist.update (blocklist JIDs)
  * call events (chatId, from)
  * group metadata (participants, owner, subjectOwner)
  * group notifications (acting participant, add/remove/promote/demote)
  * newsletter notifications (author, user JIDs)
  * sync actions (mutation index normalization)

- Make handlePresenceUpdate and handleGroupNotification async to
  support await on LID resolution

- Add normalizeGroupMetadata() helper in groups.ts for all
  extractGroupMetadata call sites

Performance: ~0.01ms per message (LRU cache hit). No impact on
message sending. First-contact resolution ~2-5ms (one-time per contact).

* fix: normalize LID→PN in handleBadAck, media retry, and PDO recovery

Additional leak points found during final audit:
- handleBadAck: key.remoteJid from ack stanza could be LID
- messages.media-update: media retry key JIDs not normalized
- CTWA PDO recovery: webMessageInfo.key from phone response not normalized

* fix: address PR review — parallelize LID resolution, use helper consistently

- normalizeGroupMetadata: resolve participant LIDs with Promise.all
  instead of sequential loop (perf on large groups)
- handleCall: resolve participant JIDs with Promise.all
- handleBadAck: use normalizeKeyLidToPn() helper instead of manual
  resolveLidToPn + assignment (consistency with other code paths)
- CB:relay: resolve callCreator LID→PN before emitting

src/Socket/chats.ts

@@ -50,7 +50,8 @@ import {
 	isMissingKeyError,
 	MAX_SYNC_ATTEMPTS,
 	newLTHashState,
-	processSyncAction
+	processSyncAction,
+	resolveLidToPn
 } from '../Utils'
 import { makeKeyedMutex, makeMutex } from '../Utils/make-mutex'
 import processMessage from '../Utils/process-message'
@@ -757,9 +758,16 @@ export const makeChatsSocket = (config: SocketConfig) => {
 			}, authState?.creds?.me?.id || 'resync-app-state')
 
 			const { onMutation } = newAppStateChunkHandler(isInitialSync)
+			const lidMapping = signalRepository.lidMapping
 			for (const key in globalMutationMap) {
 				const mutation = globalMutationMap[key]
 				if (!mutation) continue
+				// Normalize LID→PN in sync action index[1] (chat/contact ID)
+				if (mutation.index[1] && isAnyLidUser(mutation.index[1])) {
+					const resolved = await resolveLidToPn(mutation.index[1], lidMapping, logger)
+					if (resolved) mutation.index[1] = resolved
+				}
+
 				onMutation(mutation)
 			}
 		}
@@ -912,16 +920,16 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		})
 	}
 
-	const handlePresenceUpdate = ({ tag, attrs, content }: BinaryNode) => {
+	const handlePresenceUpdate = async ({ tag, attrs, content }: BinaryNode) => {
 		let presence: PresenceData | undefined
-		const jid = attrs.from
-		const participant = attrs.participant || attrs.from
-		if (!jid) {
+		const rawJid = attrs.from
+		const rawParticipant = attrs.participant || attrs.from
+		if (!rawJid) {
 			logger.warn({ attrs }, 'handlePresenceUpdate: jid (attrs.from) is missing, skipping')
 			return
 		}
 
-		if (shouldIgnoreJid(jid) && jid !== S_WHATSAPP_NET) {
+		if (shouldIgnoreJid(rawJid) && rawJid !== S_WHATSAPP_NET) {
 			return
 		}
 
@@ -933,7 +941,7 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		} else if (Array.isArray(content)) {
 			const [firstChild] = content
 			if (!firstChild) {
-				logger.warn({ jid }, 'handlePresenceUpdate: firstChild content is empty, skipping')
+				logger.warn({ jid: rawJid }, 'handlePresenceUpdate: firstChild content is empty, skipping')
 				return
 			}
 
@@ -952,12 +960,19 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		}
 
 		if (presence) {
-			if (!participant) {
-				logger.warn({ jid }, 'handlePresenceUpdate: participant is missing, skipping')
+			if (!rawParticipant) {
+				logger.warn({ jid: rawJid }, 'handlePresenceUpdate: participant is missing, skipping')
 				return
 			}
 
-			ev.emit('presence.update', { id: jid, presences: { [participant]: presence } })
+			// Resolve LID→PN so consumers always see phone-number JIDs
+			const lidMapping = signalRepository.lidMapping
+			const [jid, participant] = await Promise.all([
+				resolveLidToPn(rawJid, lidMapping, logger),
+				resolveLidToPn(rawParticipant, lidMapping, logger)
+			])
+
+			ev.emit('presence.update', { id: jid!, presences: { [participant!]: presence } })
 		}
 	}
 
@@ -1031,8 +1046,16 @@ export const makeChatsSocket = (config: SocketConfig) => {
 				undefined,
 				logger
 			)
+			const lidMapping = signalRepository.lidMapping
 			for (const key in mutationMap) {
-				onMutation(mutationMap[key]!)
+				const mutation = mutationMap[key]!
+				// Normalize LID→PN in sync action index[1] (chat/contact ID)
+				if (mutation.index[1] && isAnyLidUser(mutation.index[1])) {
+					const resolved = await resolveLidToPn(mutation.index[1], lidMapping, logger)
+					if (resolved) mutation.index[1] = resolved
+				}
+
+				onMutation(mutation)
 			}
 		}
 	}
@@ -1376,8 +1399,12 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		}
 	})
 
-	ws.on('CB:presence', handlePresenceUpdate)
-	ws.on('CB:chatstate', handlePresenceUpdate)
+	ws.on('CB:presence', (node: BinaryNode) => {
+		handlePresenceUpdate(node).catch(err => onUnexpectedError(err, 'handling presence update'))
+	})
+	ws.on('CB:chatstate', (node: BinaryNode) => {
+		handlePresenceUpdate(node).catch(err => onUnexpectedError(err, 'handling chatstate update'))
+	})
 
 	ws.on('CB:ib,,dirty', async (node: BinaryNode) => {
 		const { attrs } = getBinaryNodeChild(node, 'dirty')!