fix(inbound): avoid HOL blocking on malformed-JID fallback bucket

Addresses Copilot review on PR #392.

The previous fallback `normalizedChatId || 'unknown'` funneled every
message with a missing or malformed chat id into a single global queue
on `postUpsertMutex`, head-of-line blocking unrelated malformed inputs
behind a shared bucket.

Prefer `msg.key?.id` over the constant: it is unique per message so
unrelated malformed inputs no longer serialize together, while valid
messages continue to hit the normalized chat-id path — preserving the
per-chat ordering guarantee where it actually matters. The CodeRabbit
concern about `msg.key.id` fragmenting the queue applied to the primary
key derivation (where ordering matters); here it is purely a fallback
for a corruption edge case where there is no chat to order by anyway.

WAProto/WAProto.proto

@@ -1,7 +1,7 @@
 syntax = "proto3";
 package proto;
 
-/// WhatsApp Version: 2.3000.1034621774
+/// WhatsApp Version: 2.3000.1038164556
 
 message ADVDeviceIdentity {
     optional uint32 rawId = 1;
@@ -345,6 +345,14 @@ message BotAgeCollectionMetadata {
     }
 }
 
+message BotAgentDeepLinkMetadata {
+    optional string token = 1;
+}
+
+message BotAgentMetadata {
+    optional BotAgentDeepLinkMetadata deepLinkMetadata = 1;
+}
+
 message BotCapabilityMetadata {
     repeated BotCapabilityType capabilities = 1;
     enum BotCapabilityType {
@@ -407,9 +415,18 @@ message BotCapabilityMetadata {
         RICH_RESPONSE_INLINE_LINKS_ENABLED = 56;
         RICH_RESPONSE_UR_IMAGINE_VIDEO = 57;
         JSON_PATCH_STREAMING = 58;
+        AI_TAB_FORCE_CLIPPY = 59;
+        UNIFIED_RESPONSE_EMBEDDED_SCREENS = 60;
+        AI_SUBSCRIPTION_ENABLED = 61;
     }
 }
 
+message BotCommandMetadata {
+    optional string commandName = 1;
+    optional string commandDescription = 2;
+    optional string commandPrompt = 3;
+}
+
 message BotDocumentMessageMetadata {
     optional DocumentPluginType pluginType = 1;
     enum DocumentPluginType {
@@ -641,6 +658,7 @@ message BotMetadata {
     optional BotRenderingConfigMetadata botRenderingConfigMetadata = 36;
     optional BotInfrastructureDiagnostics botInfrastructureDiagnostics = 37;
     optional AIMediaCollectionMetadata aiMediaCollectionMetadata = 38;
+    optional BotCommandMetadata commandMetadata = 39;
     optional bytes internalMetadata = 999;
 }
 
@@ -692,6 +710,7 @@ enum BotMetricsEntryPoint {
     WEB_NAVIGATION_BAR = 47;
     GROUP_MEMBER = 54;
     CHATLIST_SEARCH = 55;
+    NEW_CHAT_LIST = 56;
 }
 message BotMetricsMetadata {
     optional string destinationId = 1;
@@ -1074,6 +1093,7 @@ message ClientPairingProps {
     optional bool isSyncdPureLidSession = 2;
     optional bool isSyncdSnapshotRecoveryEnabled = 3;
     optional bool isHsThumbnailSyncEnabled = 4;
+    optional bytes subscriptionSyncPayload = 5;
 }
 
 message ClientPayload {
@@ -1454,6 +1474,11 @@ message ContextInfo {
         optional AdType adType = 25;
         optional string wtwaWebsiteUrl = 26;
         optional string adPreviewUrl = 27;
+        optional bool containsCtwaFlowsAutoReply = 28;
+        optional int32 agmThumbnailStrategy = 29;
+        optional int32 agmTitleStrategy = 30;
+        optional int32 agmSubtitleStrategy = 31;
+        optional int32 agmHeaderInteractionStrategy = 32;
         enum AdType {
             CTWA = 0;
             CAWC = 1;
@@ -1608,6 +1633,8 @@ message Conversation {
     optional bool limitSharingInitiatedByMe = 53;
     optional bool maibaAiThreadEnabled = 54;
     optional bool isMarketingMessageThread = 55;
+    optional bool isSenderNewAccount = 56;
+    optional uint32 afterReadDuration = 57;
     enum EndOfHistoryTransferType {
         COMPLETE_BUT_MORE_MESSAGES_REMAIN_ON_PRIMARY = 0;
         COMPLETE_AND_NO_MORE_MESSAGE_REMAIN_ON_PRIMARY = 1;
@@ -1635,6 +1662,9 @@ message DeviceCapabilities {
     message BusinessBroadcast {
         optional bool importListEnabled = 1;
         optional bool companionSupportEnabled = 2;
+        optional bool campaignSyncEnabled = 3;
+        optional bool insightsSyncEnabled = 4;
+        optional int32 recipientLimit = 5;
     }
     
     enum ChatLockSupportLevel {
@@ -1710,6 +1740,8 @@ message DeviceProps {
         optional uint32 initialSyncMaxMessagesPerChat = 20;
         optional bool supportManusHistory = 21;
         optional bool supportHatchHistory = 22;
+        repeated string supportedBotChannelFbids = 23;
+        optional bool supportInlineContacts = 24;
     }
     
     enum PlatformType {
@@ -1896,6 +1928,16 @@ message GroupParticipant {
     }
 }
 
+message GroupRootKeyShare {
+    repeated GroupRootKeyShareEntry keys = 1;
+}
+
+message GroupRootKeyShareEntry {
+    optional bytes groupRootKey = 1;
+    optional string keyId = 2;
+    optional int64 expiryTimestampMs = 3;
+}
+
 message HandshakeMessage {
     optional ClientHello clientHello = 2;
     optional ServerHello serverHello = 3;
@@ -1904,6 +1946,8 @@ message HandshakeMessage {
         optional bytes static = 1;
         optional bytes payload = 2;
         optional bytes extendedCiphertext = 3;
+        optional bytes paddedBytes = 4;
+        optional bool simulateXxkemFs = 5;
     }
     
     message ClientHello {
@@ -1912,13 +1956,31 @@ message HandshakeMessage {
         optional bytes payload = 3;
         optional bool useExtended = 4;
         optional bytes extendedCiphertext = 5;
+        optional bytes paddedBytes = 6;
+        optional bool sendServerHelloPaddedBytes = 7;
+        optional bool simulateXxkemFs = 8;
+        optional HandshakeMessage.HandshakePqMode pqMode = 9;
+        optional bytes extendedEphemeral = 10;
     }
     
+    enum HandshakePqMode {
+        HANDSHAKE_PQ_MODE_UNKNOWN = 0;
+        XXKEM = 1;
+        XXKEM_FS = 2;
+        WA_CLASSICAL = 3;
+        WA_PQ = 4;
+        IKKEM = 5;
+        IKKEM_FS = 6;
+        XXKEM_2 = 7;
+        IKKEM_2 = 8;
+    }
     message ServerHello {
         optional bytes ephemeral = 1;
         optional bytes static = 2;
         optional bytes payload = 3;
         optional bytes extendedStatic = 4;
+        optional bytes paddingBytes = 5;
+        optional bytes extendedCiphertext = 6;
     }
     
 }
@@ -1942,6 +2004,8 @@ message HistorySync {
     optional bytes shareableChatIdentifierEncryptionKey = 17;
     repeated Account accounts = 18;
     optional bytes nctSalt = 19;
+    repeated InlineContact inlineContacts = 20;
+    optional bool inlineContactsProvided = 21;
     enum BotAIWaitListState {
         IN_WAITLIST = 0;
         AI_AVAILABLE = 1;
@@ -2036,6 +2100,14 @@ message InThreadSurveyMetadata {
     
 }
 
+message InlineContact {
+    optional string pnJid = 1;
+    optional string lidJid = 2;
+    optional string fullName = 3;
+    optional string firstName = 4;
+    optional string username = 5;
+}
+
 message InteractiveAnnotation {
     repeated Point polygonVertices = 1;
     optional bool shouldSkipConfirmation = 4;
@@ -2114,7 +2186,6 @@ message LimitSharing {
         CHAT_SETTING = 1;
         BIZ_SUPPORTS_FB_HOSTING = 2;
         UNKNOWN_GROUP = 3;
-        DEPRECATION = 4;
     }
 }
 
@@ -2275,6 +2346,8 @@ message Message {
     optional PollCreationMessage pollCreationMessageV6 = 119;
     optional ConditionalRevealMessage conditionalRevealMessage = 120;
     optional PollAddOptionMessage pollAddOptionMessage = 121;
+    optional EventInviteMessage eventInviteMessage = 122;
+    optional GroupRootKeyShare groupRootKeyShare = 123;
     message AlbumMessage {
         optional uint32 expectedImageCount = 2;
         optional uint32 expectedVideoCount = 3;
@@ -2466,6 +2539,7 @@ message Message {
             UNKNOWN = 0;
             CONTROL_PASSED = 1;
             CONTROL_TAKEN = 2;
+            INFO = 3;
         }
         message CloudAPIThreadControlNotificationContent {
             optional string handoffNotificationText = 1;
@@ -2555,6 +2629,16 @@ message Message {
         optional bytes encIv = 3;
     }
     
+    message EventInviteMessage {
+        optional ContextInfo contextInfo = 1;
+        optional string eventId = 2;
+        optional string eventTitle = 3;
+        optional bytes jpegThumbnail = 4;
+        optional int64 startTime = 5;
+        optional string caption = 6;
+        optional bool isCanceled = 7;
+    }
+    
     message EventMessage {
         optional ContextInfo contextInfo = 1;
         optional bool isCanceled = 2;
@@ -3081,9 +3165,10 @@ message Message {
     
     message MessageHistoryMetadata {
         repeated string historyReceivers = 1;
-        optional int64 oldestMessageTimestamp = 2;
+        optional int64 oldestMessageTimestampInWindow = 2;
         optional int64 messageCount = 3;
         repeated string nonHistoryReceivers = 4;
+        optional int64 oldestMessageTimestampInBundle = 5;
     }
     
     message MessageHistoryNotice {
@@ -3144,6 +3229,11 @@ message Message {
         optional int64 expiryTimestamp = 2;
         optional bool incentiveEligible = 3;
         optional string referralId = 4;
+        optional InviteType inviteType = 5;
+        enum InviteType {
+            DEFAULT = 0;
+            MAPPER = 1;
+        }
         enum ServiceType {
             UNKNOWN = 0;
             FBPAY = 1;
@@ -3231,6 +3321,7 @@ message Message {
             optional int32 onDemandMsgCount = 4;
             optional int64 oldestMsgTimestampMs = 5;
             optional string accountLid = 6;
+            optional bool supportInlineResponse = 7;
         }
         
         message PlaceholderMessageResendRequest {
@@ -3317,6 +3408,7 @@ message Message {
                 ERROR_REQUEST_ON_NON_SMB_PRIMARY = 4;
                 ERROR_HOSTED_DEVICE_NOT_CONNECTED = 5;
                 ERROR_HOSTED_DEVICE_LOGIN_TIME_NOT_SET = 6;
+                ERROR_MULTI_PROVIDER_NOT_CONFIGURED = 7;
             }
             message HistorySyncChunkRetryResponse {
                 optional Message.HistorySyncType syncType = 1;
@@ -3597,6 +3689,7 @@ message Message {
     message RequestWelcomeMessageMetadata {
         optional LocalChatState localChatState = 1;
         optional WelcomeTrigger welcomeTrigger = 2;
+        optional BotAgentMetadata botAgentMetadata = 3;
         enum LocalChatState {
             EMPTY = 0;
             NON_EMPTY = 1;
@@ -3714,6 +3807,7 @@ message Message {
         optional bool isLottie = 21;
         optional string accessibilityLabel = 22;
         optional int32 premium = 24;
+        optional string emojis = 25;
     }
     
     message StickerPackMessage {
@@ -3934,6 +4028,7 @@ message MessageContextInfo {
     optional LimitSharing limitSharingV2 = 14;
     repeated ThreadID threadId = 15;
     optional WebLinkRenderConfig weblinkRenderConfig = 16;
+    optional bytes teeBotMetadata = 17;
     enum MessageAddonExpiryType {
         STATIC = 1;
         DEPENDENT_ON_PARENT = 2;
@@ -4124,6 +4219,10 @@ enum MutationProps {
     BUSINESS_BROADCAST_CAMPAIGN_ACTION = 81;
     BUSINESS_BROADCAST_INSIGHTS_ACTION = 82;
     CUSTOMER_DATA_ACTION = 83;
+    SUBSCRIPTIONS_SYNC_V2_ACTION = 84;
+    THREAD_PIN_ACTION = 85;
+    AUTO_ORGANIZE_BUSINESS_CHAT_SETTING = 86;
+    BIZ_AI_SETTINGS_NUDGE_ACTION = 87;
     SHARE_OWN_PN = 10001;
     BUSINESS_BROADCAST_ACTION = 10002;
     AI_THREAD_DELETE_ACTION = 10003;
@@ -4437,6 +4536,12 @@ message ReportingTokenInfo {
     optional bytes reportingTag = 1;
 }
 
+message ScheduledMessageMetadata {
+    optional string revealKeyId = 1;
+    optional bytes revealKey = 2;
+    optional uint64 scheduledTime = 3;
+}
+
 message SenderKeyDistributionMessage {
     optional uint32 id = 1;
     optional uint32 iteration = 2;
@@ -4592,6 +4697,7 @@ message StatusAttribution {
             APPLE_MUSIC = 8;
             SHARECHAT = 9;
             GOOGLE_PHOTOS = 10;
+            SOUNDCLOUD = 11;
         }
     }
     
@@ -4760,6 +4866,10 @@ message SyncActionValue {
     optional BusinessBroadcastCampaignAction businessBroadcastCampaignAction = 81;
     optional BusinessBroadcastInsightsAction businessBroadcastInsightsAction = 82;
     optional CustomerDataAction customerDataAction = 83;
+    optional SubscriptionsSyncV2Action subscriptionsSyncV2Action = 84;
+    optional ThreadPinAction threadPinAction = 85;
+    optional AutoOrganizeBusinessChatSetting autoOrganizeBusinessChatSetting = 86;
+    optional BizAISettingsNudgeAction bizAiSettingsNudgeAction = 87;
     message AgentAction {
         optional string name = 1;
         optional int32 deviceID = 2;
@@ -4779,6 +4889,10 @@ message SyncActionValue {
         optional SyncActionValue.SyncActionMessageRange messageRange = 2;
     }
     
+    message AutoOrganizeBusinessChatSetting {
+        optional bool autoOrganize = 1;
+    }
+    
     message AvatarUpdatedAction {
         optional AvatarEventType eventType = 1;
         repeated SyncActionValue.StickerAction recentAvatarStickers = 2;
@@ -4789,6 +4903,20 @@ message SyncActionValue {
         }
     }
     
+    message BizAISettingsNudgeAction {
+        optional BizAISettingsCategory category = 1;
+        optional int64 version = 2;
+        optional int64 updatedAtMs = 3;
+        enum BizAISettingsCategory {
+            UNKNOWN = 0;
+            INSTRUCTIONS = 1;
+            RESPONSE_SETTINGS = 2;
+            EXAMPLE_RESPONSES = 3;
+            KNOWLEDGE = 4;
+            LEAD_GEN = 5;
+        }
+    }
+    
     message BotWelcomeRequestAction {
         optional bool isSent = 1;
     }
@@ -4834,6 +4962,7 @@ message SyncActionValue {
         repeated SyncActionValue.BroadcastListParticipant participants = 2;
         optional string listName = 3;
         repeated string labelIds = 4;
+        optional string audienceExpression = 5;
     }
     
     message CallLogAction {
@@ -4963,6 +5092,7 @@ message SyncActionValue {
             DRAFTED = 8;
             AI_HANDOFF = 9;
             CHANNELS = 10;
+            AI_RESPONDING = 11;
         }
     }
     
@@ -5178,6 +5308,8 @@ message SyncActionValue {
         optional bool isStatusNotificationEnabled = 29;
         optional int32 statusNotificationToneId = 30;
         optional bool shouldPlaySoundForCallNotification = 31;
+        optional string chatThemeId = 32;
+        optional string colorSchemeId = 33;
         enum DisplayMode {
             DISPLAY_MODE_UNKNOWN = 0;
             ALWAYS = 1;
@@ -5222,6 +5354,8 @@ message SyncActionValue {
             IS_STATUS_NOTIFICATION_ENABLED = 29;
             STATUS_NOTIFICATION_TONE_ID = 30;
             SHOULD_PLAY_SOUND_FOR_CALL_NOTIFICATION = 31;
+            CHAT_THEME_ID = 32;
+            COLOR_SCHEME_ID = 33;
         }
         enum SettingPlatform {
             PLATFORM_UNKNOWN = 0;
@@ -5245,11 +5379,22 @@ message SyncActionValue {
         repeated string userJid = 2;
         optional bool shareToFB = 3;
         optional bool shareToIG = 4;
+        repeated CustomList customLists = 5;
+        repeated StatusDistributionMode modes = 6;
+        message CustomList {
+            optional string listId = 1;
+            optional string name = 2;
+            optional string emoji = 3;
+            optional bool isSelected = 4;
+            repeated string userJid = 5;
+        }
+        
         enum StatusDistributionMode {
             ALLOW_LIST = 0;
             DENY_LIST = 1;
             CONTACTS = 2;
             CLOSE_FRIENDS = 3;
+            CUSTOM_LIST = 4;
         }
     }
     
@@ -5275,6 +5420,29 @@ message SyncActionValue {
         optional int64 expirationDate = 3;
     }
     
+    message SubscriptionsSyncV2Action {
+        repeated SubscriptionInfo subscriptions = 1;
+        repeated PaidFeature paidFeature = 2;
+        message PaidFeature {
+            optional string name = 1;
+            optional bool enabled = 2;
+            optional int32 limit = 3;
+            optional int64 expirationTime = 4;
+        }
+        
+        message SubscriptionInfo {
+            optional string id = 1;
+            optional int32 tier = 2;
+            optional string status = 3;
+            optional int64 startTime = 4;
+            optional int64 endTime = 5;
+            optional bool isPlatformChanged = 6;
+            optional string source = 7;
+            optional int64 creationTime = 8;
+        }
+        
+    }
+    
     message SyncActionMessage {
         optional MessageKey key = 1;
         optional int64 timestamp = 2;
@@ -5286,6 +5454,10 @@ message SyncActionValue {
         repeated SyncActionValue.SyncActionMessage messages = 3;
     }
     
+    message ThreadPinAction {
+        optional bool pinned = 1;
+    }
+    
     message TimeFormatAction {
         optional bool isTwentyFourHourFormatEnabled = 1;
     }
@@ -5609,6 +5781,8 @@ message WebMessageInfo {
     optional QuarantinedMessage quarantinedMessage = 77;
     optional uint32 nonJidMentions = 78;
     optional string hsmTag = 79;
+    optional uint64 ephemeralExpirationTimestamp = 80;
+    optional ScheduledMessageMetadata scheduledMessageMetadata = 81;
     enum BizPrivacyStatus {
         E2EE = 0;
         FB = 2;
@@ -5848,6 +6022,8 @@ message WebMessageInfo {
         GROUP_MEMBER_SHARE_GROUP_HISTORY_MODE = 221;
         GROUP_OPEN_BOT_ADDED = 222;
         GROUP_TEE_BOT_ADDED = 223;
+        CONTACT_INFO = 224;
+        SCHEDULED_MESSAGE_CREATED = 225;
     }
 }
 

WAProto/fix-imports.js

@@ -18,14 +18,21 @@ try {
     '\tif (typeof value === "number") {\n' +
     '\t\treturn String(value);\n' +
     '\t}\n' +
-    '\tif (!$util.Long) {\n' +
-    '\t\treturn String(value);\n' +
+    '\t// Fast path: convert Long {low, high} directly via native BigInt\n' +
+    '\t// BigInt.toString() is a native C++ operation, much faster than Long\'s pure JS division loops\n' +
+    '\tif (value && typeof value.low === "number" && typeof value.high === "number") {\n' +
+    '\t\t// Normalize high to signed int32 so the sign-bit check works for inputs\n' +
+    '\t\t// where high is stored unsigned (e.g. raw {low, high} JSON).\n' +
+    '\t\tconst high = value.high | 0;\n' +
+    '\t\tconst lo = BigInt(value.low >>> 0);\n' +
+    '\t\tconst hi = BigInt(value.high >>> 0);\n' +
+    '\t\tconst combined = (hi << 32n) | lo;\n' +
+    '\t\tif (!unsigned && high < 0) {\n' +
+    '\t\t\treturn (combined - (1n << 64n)).toString();\n' +
+    '\t\t}\n' +
+    '\t\treturn combined.toString();\n' +
     '\t}\n' +
-    '\tconst normalized = $util.Long.fromValue(value);\n' +
-    '\tconst prepared = unsigned && normalized && typeof normalized.toUnsigned === "function"\n' +
-    '\t\t? normalized.toUnsigned()\n' +
-    '\t\t: normalized;\n' +
-    '\treturn prepared.toString();\n' +
+    '\treturn String(value);\n' +
     '}\n\n'
   const longToNumberHelper =
     'function longToNumber(value, unsigned) {\n' +
@@ -33,19 +40,20 @@ try {
     '\t\treturn value;\n' +
     '\t}\n' +
     '\tif (typeof value === "string") {\n' +
-    '\t\tconst numeric = Number(value);\n' +
-    '\t\treturn numeric;\n' +
-    '\t}\n' +
-    '\tif (!$util.Long) {\n' +
     '\t\treturn Number(value);\n' +
     '\t}\n' +
-    '\tconst normalized = $util.Long.fromValue(value);\n' +
-    '\tconst prepared = unsigned && normalized && typeof normalized.toUnsigned === "function"\n' +
-    '\t\t? normalized.toUnsigned()\n' +
-    '\t\t: typeof normalized.toSigned === "function"\n' +
-    '\t\t\t? normalized.toSigned()\n' +
-    '\t\t\t: normalized;\n' +
-    '\treturn prepared.toNumber();\n' +
+    '\t// Fast path: convert Long {low, high} directly via native BigInt\n' +
+    '\tif (value && typeof value.low === "number" && typeof value.high === "number") {\n' +
+    '\t\tconst high = value.high | 0;\n' +
+    '\t\tconst lo = BigInt(value.low >>> 0);\n' +
+    '\t\tconst hi = BigInt(value.high >>> 0);\n' +
+    '\t\tconst combined = (hi << 32n) | lo;\n' +
+    '\t\tif (!unsigned && high < 0) {\n' +
+    '\t\t\treturn Number(combined - (1n << 64n));\n' +
+    '\t\t}\n' +
+    '\t\treturn Number(combined);\n' +
+    '\t}\n' +
+    '\treturn Number(value);\n' +
     '}\n\n'
 
   if (!content.includes('function longToString(')) {

WAProto/index.d.ts

@@ -981,6 +981,38 @@ export namespace proto {
         }
     }
 
+    interface IBotAgentDeepLinkMetadata {
+        token?: (string|null);
+    }
+
+    class BotAgentDeepLinkMetadata implements IBotAgentDeepLinkMetadata {
+        constructor(p?: proto.IBotAgentDeepLinkMetadata);
+        public token?: (string|null);
+        public static create(properties?: proto.IBotAgentDeepLinkMetadata): proto.BotAgentDeepLinkMetadata;
+        public static encode(m: proto.IBotAgentDeepLinkMetadata, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.BotAgentDeepLinkMetadata;
+        public static fromObject(d: { [k: string]: any }): proto.BotAgentDeepLinkMetadata;
+        public static toObject(m: proto.BotAgentDeepLinkMetadata, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
+    interface IBotAgentMetadata {
+        deepLinkMetadata?: (proto.IBotAgentDeepLinkMetadata|null);
+    }
+
+    class BotAgentMetadata implements IBotAgentMetadata {
+        constructor(p?: proto.IBotAgentMetadata);
+        public deepLinkMetadata?: (proto.IBotAgentDeepLinkMetadata|null);
+        public static create(properties?: proto.IBotAgentMetadata): proto.BotAgentMetadata;
+        public static encode(m: proto.IBotAgentMetadata, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.BotAgentMetadata;
+        public static fromObject(d: { [k: string]: any }): proto.BotAgentMetadata;
+        public static toObject(m: proto.BotAgentMetadata, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
     interface IBotCapabilityMetadata {
         capabilities?: (proto.BotCapabilityMetadata.BotCapabilityType[]|null);
     }
@@ -1058,10 +1090,33 @@ export namespace proto {
             RICH_RESPONSE_UR_BLOKS_ENABLED = 55,
             RICH_RESPONSE_INLINE_LINKS_ENABLED = 56,
             RICH_RESPONSE_UR_IMAGINE_VIDEO = 57,
-            JSON_PATCH_STREAMING = 58
+            JSON_PATCH_STREAMING = 58,
+            AI_TAB_FORCE_CLIPPY = 59,
+            UNIFIED_RESPONSE_EMBEDDED_SCREENS = 60,
+            AI_SUBSCRIPTION_ENABLED = 61
         }
     }
 
+    interface IBotCommandMetadata {
+        commandName?: (string|null);
+        commandDescription?: (string|null);
+        commandPrompt?: (string|null);
+    }
+
+    class BotCommandMetadata implements IBotCommandMetadata {
+        constructor(p?: proto.IBotCommandMetadata);
+        public commandName?: (string|null);
+        public commandDescription?: (string|null);
+        public commandPrompt?: (string|null);
+        public static create(properties?: proto.IBotCommandMetadata): proto.BotCommandMetadata;
+        public static encode(m: proto.IBotCommandMetadata, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.BotCommandMetadata;
+        public static fromObject(d: { [k: string]: any }): proto.BotCommandMetadata;
+        public static toObject(m: proto.BotCommandMetadata, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
     interface IBotDocumentMessageMetadata {
         pluginType?: (proto.BotDocumentMessageMetadata.DocumentPluginType|null);
     }
@@ -1646,6 +1701,7 @@ export namespace proto {
         botRenderingConfigMetadata?: (proto.IBotRenderingConfigMetadata|null);
         botInfrastructureDiagnostics?: (proto.IBotInfrastructureDiagnostics|null);
         aiMediaCollectionMetadata?: (proto.IAIMediaCollectionMetadata|null);
+        commandMetadata?: (proto.IBotCommandMetadata|null);
         internalMetadata?: (Uint8Array|null);
     }
 
@@ -1688,6 +1744,7 @@ export namespace proto {
         public botRenderingConfigMetadata?: (proto.IBotRenderingConfigMetadata|null);
         public botInfrastructureDiagnostics?: (proto.IBotInfrastructureDiagnostics|null);
         public aiMediaCollectionMetadata?: (proto.IAIMediaCollectionMetadata|null);
+        public commandMetadata?: (proto.IBotCommandMetadata|null);
         public internalMetadata?: (Uint8Array|null);
         public static create(properties?: proto.IBotMetadata): proto.BotMetadata;
         public static encode(m: proto.IBotMetadata, w?: $protobuf.Writer): $protobuf.Writer;
@@ -1745,7 +1802,8 @@ export namespace proto {
         WEB_INTRO_PANEL = 46,
         WEB_NAVIGATION_BAR = 47,
         GROUP_MEMBER = 54,
-        CHATLIST_SEARCH = 55
+        CHATLIST_SEARCH = 55,
+        NEW_CHAT_LIST = 56
     }
 
     interface IBotMetricsMetadata {
@@ -2769,6 +2827,7 @@ export namespace proto {
         isSyncdPureLidSession?: (boolean|null);
         isSyncdSnapshotRecoveryEnabled?: (boolean|null);
         isHsThumbnailSyncEnabled?: (boolean|null);
+        subscriptionSyncPayload?: (Uint8Array|null);
     }
 
     class ClientPairingProps implements IClientPairingProps {
@@ -2777,6 +2836,7 @@ export namespace proto {
         public isSyncdPureLidSession?: (boolean|null);
         public isSyncdSnapshotRecoveryEnabled?: (boolean|null);
         public isHsThumbnailSyncEnabled?: (boolean|null);
+        public subscriptionSyncPayload?: (Uint8Array|null);
         public static create(properties?: proto.IClientPairingProps): proto.ClientPairingProps;
         public static encode(m: proto.IClientPairingProps, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.ClientPairingProps;
@@ -3554,6 +3614,11 @@ export namespace proto {
             adType?: (proto.ContextInfo.ExternalAdReplyInfo.AdType|null);
             wtwaWebsiteUrl?: (string|null);
             adPreviewUrl?: (string|null);
+            containsCtwaFlowsAutoReply?: (boolean|null);
+            agmThumbnailStrategy?: (number|null);
+            agmTitleStrategy?: (number|null);
+            agmSubtitleStrategy?: (number|null);
+            agmHeaderInteractionStrategy?: (number|null);
         }
 
         class ExternalAdReplyInfo implements IExternalAdReplyInfo {
@@ -3585,6 +3650,11 @@ export namespace proto {
             public adType?: (proto.ContextInfo.ExternalAdReplyInfo.AdType|null);
             public wtwaWebsiteUrl?: (string|null);
             public adPreviewUrl?: (string|null);
+            public containsCtwaFlowsAutoReply?: (boolean|null);
+            public agmThumbnailStrategy?: (number|null);
+            public agmTitleStrategy?: (number|null);
+            public agmSubtitleStrategy?: (number|null);
+            public agmHeaderInteractionStrategy?: (number|null);
             public static create(properties?: proto.ContextInfo.IExternalAdReplyInfo): proto.ContextInfo.ExternalAdReplyInfo;
             public static encode(m: proto.ContextInfo.IExternalAdReplyInfo, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.ContextInfo.ExternalAdReplyInfo;
@@ -3849,6 +3919,8 @@ export namespace proto {
         limitSharingInitiatedByMe?: (boolean|null);
         maibaAiThreadEnabled?: (boolean|null);
         isMarketingMessageThread?: (boolean|null);
+        isSenderNewAccount?: (boolean|null);
+        afterReadDuration?: (number|null);
     }
 
     class Conversation implements IConversation {
@@ -3908,6 +3980,8 @@ export namespace proto {
         public limitSharingInitiatedByMe?: (boolean|null);
         public maibaAiThreadEnabled?: (boolean|null);
         public isMarketingMessageThread?: (boolean|null);
+        public isSenderNewAccount?: (boolean|null);
+        public afterReadDuration?: (number|null);
         public static create(properties?: proto.IConversation): proto.Conversation;
         public static encode(m: proto.IConversation, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Conversation;
@@ -3983,12 +4057,18 @@ export namespace proto {
         interface IBusinessBroadcast {
             importListEnabled?: (boolean|null);
             companionSupportEnabled?: (boolean|null);
+            campaignSyncEnabled?: (boolean|null);
+            insightsSyncEnabled?: (boolean|null);
+            recipientLimit?: (number|null);
         }
 
         class BusinessBroadcast implements IBusinessBroadcast {
             constructor(p?: proto.DeviceCapabilities.IBusinessBroadcast);
             public importListEnabled?: (boolean|null);
             public companionSupportEnabled?: (boolean|null);
+            public campaignSyncEnabled?: (boolean|null);
+            public insightsSyncEnabled?: (boolean|null);
+            public recipientLimit?: (number|null);
             public static create(properties?: proto.DeviceCapabilities.IBusinessBroadcast): proto.DeviceCapabilities.BusinessBroadcast;
             public static encode(m: proto.DeviceCapabilities.IBusinessBroadcast, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.DeviceCapabilities.BusinessBroadcast;
@@ -4164,6 +4244,8 @@ export namespace proto {
             initialSyncMaxMessagesPerChat?: (number|null);
             supportManusHistory?: (boolean|null);
             supportHatchHistory?: (boolean|null);
+            supportedBotChannelFbids?: (string[]|null);
+            supportInlineContacts?: (boolean|null);
         }
 
         class HistorySyncConfig implements IHistorySyncConfig {
@@ -4190,6 +4272,8 @@ export namespace proto {
             public initialSyncMaxMessagesPerChat?: (number|null);
             public supportManusHistory?: (boolean|null);
             public supportHatchHistory?: (boolean|null);
+            public supportedBotChannelFbids: string[];
+            public supportInlineContacts?: (boolean|null);
             public static create(properties?: proto.DeviceProps.IHistorySyncConfig): proto.DeviceProps.HistorySyncConfig;
             public static encode(m: proto.DeviceProps.IHistorySyncConfig, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.DeviceProps.HistorySyncConfig;
@@ -4658,6 +4742,42 @@ export namespace proto {
         }
     }
 
+    interface IGroupRootKeyShare {
+        keys?: (proto.IGroupRootKeyShareEntry[]|null);
+    }
+
+    class GroupRootKeyShare implements IGroupRootKeyShare {
+        constructor(p?: proto.IGroupRootKeyShare);
+        public keys: proto.IGroupRootKeyShareEntry[];
+        public static create(properties?: proto.IGroupRootKeyShare): proto.GroupRootKeyShare;
+        public static encode(m: proto.IGroupRootKeyShare, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.GroupRootKeyShare;
+        public static fromObject(d: { [k: string]: any }): proto.GroupRootKeyShare;
+        public static toObject(m: proto.GroupRootKeyShare, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
+    interface IGroupRootKeyShareEntry {
+        groupRootKey?: (Uint8Array|null);
+        keyId?: (string|null);
+        expiryTimestampMs?: (number|Long|null);
+    }
+
+    class GroupRootKeyShareEntry implements IGroupRootKeyShareEntry {
+        constructor(p?: proto.IGroupRootKeyShareEntry);
+        public groupRootKey?: (Uint8Array|null);
+        public keyId?: (string|null);
+        public expiryTimestampMs?: (number|Long|null);
+        public static create(properties?: proto.IGroupRootKeyShareEntry): proto.GroupRootKeyShareEntry;
+        public static encode(m: proto.IGroupRootKeyShareEntry, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.GroupRootKeyShareEntry;
+        public static fromObject(d: { [k: string]: any }): proto.GroupRootKeyShareEntry;
+        public static toObject(m: proto.GroupRootKeyShareEntry, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
     interface IHandshakeMessage {
         clientHello?: (proto.HandshakeMessage.IClientHello|null);
         serverHello?: (proto.HandshakeMessage.IServerHello|null);
@@ -4684,6 +4804,8 @@ export namespace proto {
             "static"?: (Uint8Array|null);
             payload?: (Uint8Array|null);
             extendedCiphertext?: (Uint8Array|null);
+            paddedBytes?: (Uint8Array|null);
+            simulateXxkemFs?: (boolean|null);
         }
 
         class ClientFinish implements IClientFinish {
@@ -4691,6 +4813,8 @@ export namespace proto {
             public static?: (Uint8Array|null);
             public payload?: (Uint8Array|null);
             public extendedCiphertext?: (Uint8Array|null);
+            public paddedBytes?: (Uint8Array|null);
+            public simulateXxkemFs?: (boolean|null);
             public static create(properties?: proto.HandshakeMessage.IClientFinish): proto.HandshakeMessage.ClientFinish;
             public static encode(m: proto.HandshakeMessage.IClientFinish, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.HandshakeMessage.ClientFinish;
@@ -4706,6 +4830,11 @@ export namespace proto {
             payload?: (Uint8Array|null);
             useExtended?: (boolean|null);
             extendedCiphertext?: (Uint8Array|null);
+            paddedBytes?: (Uint8Array|null);
+            sendServerHelloPaddedBytes?: (boolean|null);
+            simulateXxkemFs?: (boolean|null);
+            pqMode?: (proto.HandshakeMessage.HandshakePqMode|null);
+            extendedEphemeral?: (Uint8Array|null);
         }
 
         class ClientHello implements IClientHello {
@@ -4715,6 +4844,11 @@ export namespace proto {
             public payload?: (Uint8Array|null);
             public useExtended?: (boolean|null);
             public extendedCiphertext?: (Uint8Array|null);
+            public paddedBytes?: (Uint8Array|null);
+            public sendServerHelloPaddedBytes?: (boolean|null);
+            public simulateXxkemFs?: (boolean|null);
+            public pqMode?: (proto.HandshakeMessage.HandshakePqMode|null);
+            public extendedEphemeral?: (Uint8Array|null);
             public static create(properties?: proto.HandshakeMessage.IClientHello): proto.HandshakeMessage.ClientHello;
             public static encode(m: proto.HandshakeMessage.IClientHello, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.HandshakeMessage.ClientHello;
@@ -4724,11 +4858,25 @@ export namespace proto {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        enum HandshakePqMode {
+            HANDSHAKE_PQ_MODE_UNKNOWN = 0,
+            XXKEM = 1,
+            XXKEM_FS = 2,
+            WA_CLASSICAL = 3,
+            WA_PQ = 4,
+            IKKEM = 5,
+            IKKEM_FS = 6,
+            XXKEM_2 = 7,
+            IKKEM_2 = 8
+        }
+
         interface IServerHello {
             ephemeral?: (Uint8Array|null);
             "static"?: (Uint8Array|null);
             payload?: (Uint8Array|null);
             extendedStatic?: (Uint8Array|null);
+            paddingBytes?: (Uint8Array|null);
+            extendedCiphertext?: (Uint8Array|null);
         }
 
         class ServerHello implements IServerHello {
@@ -4737,6 +4885,8 @@ export namespace proto {
             public static?: (Uint8Array|null);
             public payload?: (Uint8Array|null);
             public extendedStatic?: (Uint8Array|null);
+            public paddingBytes?: (Uint8Array|null);
+            public extendedCiphertext?: (Uint8Array|null);
             public static create(properties?: proto.HandshakeMessage.IServerHello): proto.HandshakeMessage.ServerHello;
             public static encode(m: proto.HandshakeMessage.IServerHello, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.HandshakeMessage.ServerHello;
@@ -4766,6 +4916,8 @@ export namespace proto {
         shareableChatIdentifierEncryptionKey?: (Uint8Array|null);
         accounts?: (proto.IAccount[]|null);
         nctSalt?: (Uint8Array|null);
+        inlineContacts?: (proto.IInlineContact[]|null);
+        inlineContactsProvided?: (boolean|null);
     }
 
     class HistorySync implements IHistorySync {
@@ -4788,6 +4940,8 @@ export namespace proto {
         public shareableChatIdentifierEncryptionKey?: (Uint8Array|null);
         public accounts: proto.IAccount[];
         public nctSalt?: (Uint8Array|null);
+        public inlineContacts: proto.IInlineContact[];
+        public inlineContactsProvided?: (boolean|null);
         public static create(properties?: proto.IHistorySync): proto.HistorySync;
         public static encode(m: proto.IHistorySync, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.HistorySync;
@@ -5055,6 +5209,30 @@ export namespace proto {
         }
     }
 
+    interface IInlineContact {
+        pnJid?: (string|null);
+        lidJid?: (string|null);
+        fullName?: (string|null);
+        firstName?: (string|null);
+        username?: (string|null);
+    }
+
+    class InlineContact implements IInlineContact {
+        constructor(p?: proto.IInlineContact);
+        public pnJid?: (string|null);
+        public lidJid?: (string|null);
+        public fullName?: (string|null);
+        public firstName?: (string|null);
+        public username?: (string|null);
+        public static create(properties?: proto.IInlineContact): proto.InlineContact;
+        public static encode(m: proto.IInlineContact, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.InlineContact;
+        public static fromObject(d: { [k: string]: any }): proto.InlineContact;
+        public static toObject(m: proto.InlineContact, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
     interface IInteractiveAnnotation {
         polygonVertices?: (proto.IPoint[]|null);
         shouldSkipConfirmation?: (boolean|null);
@@ -5283,8 +5461,7 @@ export namespace proto {
             UNKNOWN = 0,
             CHAT_SETTING = 1,
             BIZ_SUPPORTS_FB_HOSTING = 2,
-            UNKNOWN_GROUP = 3,
-            DEPRECATION = 4
+            UNKNOWN_GROUP = 3
         }
     }
 
@@ -5546,6 +5723,8 @@ export namespace proto {
         pollCreationMessageV6?: (proto.Message.IPollCreationMessage|null);
         conditionalRevealMessage?: (proto.Message.IConditionalRevealMessage|null);
         pollAddOptionMessage?: (proto.Message.IPollAddOptionMessage|null);
+        eventInviteMessage?: (proto.Message.IEventInviteMessage|null);
+        groupRootKeyShare?: (proto.IGroupRootKeyShare|null);
     }
 
     class Message implements IMessage {
@@ -5651,6 +5830,8 @@ export namespace proto {
         public pollCreationMessageV6?: (proto.Message.IPollCreationMessage|null);
         public conditionalRevealMessage?: (proto.Message.IConditionalRevealMessage|null);
         public pollAddOptionMessage?: (proto.Message.IPollAddOptionMessage|null);
+        public eventInviteMessage?: (proto.Message.IEventInviteMessage|null);
+        public groupRootKeyShare?: (proto.IGroupRootKeyShare|null);
         public static create(properties?: proto.IMessage): proto.Message;
         public static encode(m: proto.IMessage, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message;
@@ -6190,7 +6371,8 @@ export namespace proto {
             enum CloudAPIThreadControl {
                 UNKNOWN = 0,
                 CONTROL_PASSED = 1,
-                CONTROL_TAKEN = 2
+                CONTROL_TAKEN = 2,
+                INFO = 3
             }
 
             interface ICloudAPIThreadControlNotificationContent {
@@ -6454,6 +6636,34 @@ export namespace proto {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        interface IEventInviteMessage {
+            contextInfo?: (proto.IContextInfo|null);
+            eventId?: (string|null);
+            eventTitle?: (string|null);
+            jpegThumbnail?: (Uint8Array|null);
+            startTime?: (number|Long|null);
+            caption?: (string|null);
+            isCanceled?: (boolean|null);
+        }
+
+        class EventInviteMessage implements IEventInviteMessage {
+            constructor(p?: proto.Message.IEventInviteMessage);
+            public contextInfo?: (proto.IContextInfo|null);
+            public eventId?: (string|null);
+            public eventTitle?: (string|null);
+            public jpegThumbnail?: (Uint8Array|null);
+            public startTime?: (number|Long|null);
+            public caption?: (string|null);
+            public isCanceled?: (boolean|null);
+            public static create(properties?: proto.Message.IEventInviteMessage): proto.Message.EventInviteMessage;
+            public static encode(m: proto.Message.IEventInviteMessage, w?: $protobuf.Writer): $protobuf.Writer;
+            public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.EventInviteMessage;
+            public static fromObject(d: { [k: string]: any }): proto.Message.EventInviteMessage;
+            public static toObject(m: proto.Message.EventInviteMessage, o?: $protobuf.IConversionOptions): { [k: string]: any };
+            public toJSON(): { [k: string]: any };
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
         interface IEventMessage {
             contextInfo?: (proto.IContextInfo|null);
             isCanceled?: (boolean|null);
@@ -7818,17 +8028,19 @@ export namespace proto {
 
         interface IMessageHistoryMetadata {
             historyReceivers?: (string[]|null);
-            oldestMessageTimestamp?: (number|Long|null);
+            oldestMessageTimestampInWindow?: (number|Long|null);
             messageCount?: (number|Long|null);
             nonHistoryReceivers?: (string[]|null);
+            oldestMessageTimestampInBundle?: (number|Long|null);
         }
 
         class MessageHistoryMetadata implements IMessageHistoryMetadata {
             constructor(p?: proto.Message.IMessageHistoryMetadata);
             public historyReceivers: string[];
-            public oldestMessageTimestamp?: (number|Long|null);
+            public oldestMessageTimestampInWindow?: (number|Long|null);
             public messageCount?: (number|Long|null);
             public nonHistoryReceivers: string[];
+            public oldestMessageTimestampInBundle?: (number|Long|null);
             public static create(properties?: proto.Message.IMessageHistoryMetadata): proto.Message.MessageHistoryMetadata;
             public static encode(m: proto.Message.IMessageHistoryMetadata, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.MessageHistoryMetadata;
@@ -7986,6 +8198,7 @@ export namespace proto {
             expiryTimestamp?: (number|Long|null);
             incentiveEligible?: (boolean|null);
             referralId?: (string|null);
+            inviteType?: (proto.Message.PaymentInviteMessage.InviteType|null);
         }
 
         class PaymentInviteMessage implements IPaymentInviteMessage {
@@ -7994,6 +8207,7 @@ export namespace proto {
             public expiryTimestamp?: (number|Long|null);
             public incentiveEligible?: (boolean|null);
             public referralId?: (string|null);
+            public inviteType?: (proto.Message.PaymentInviteMessage.InviteType|null);
             public static create(properties?: proto.Message.IPaymentInviteMessage): proto.Message.PaymentInviteMessage;
             public static encode(m: proto.Message.IPaymentInviteMessage, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.PaymentInviteMessage;
@@ -8005,6 +8219,11 @@ export namespace proto {
 
         namespace PaymentInviteMessage {
 
+            enum InviteType {
+                DEFAULT = 0,
+                MAPPER = 1
+            }
+
             enum ServiceType {
                 UNKNOWN = 0,
                 FBPAY = 1,
@@ -8261,6 +8480,7 @@ export namespace proto {
                 onDemandMsgCount?: (number|null);
                 oldestMsgTimestampMs?: (number|Long|null);
                 accountLid?: (string|null);
+                supportInlineResponse?: (boolean|null);
             }
 
             class HistorySyncOnDemandRequest implements IHistorySyncOnDemandRequest {
@@ -8271,6 +8491,7 @@ export namespace proto {
                 public onDemandMsgCount?: (number|null);
                 public oldestMsgTimestampMs?: (number|Long|null);
                 public accountLid?: (string|null);
+                public supportInlineResponse?: (boolean|null);
                 public static create(properties?: proto.Message.PeerDataOperationRequestMessage.IHistorySyncOnDemandRequest): proto.Message.PeerDataOperationRequestMessage.HistorySyncOnDemandRequest;
                 public static encode(m: proto.Message.PeerDataOperationRequestMessage.IHistorySyncOnDemandRequest, w?: $protobuf.Writer): $protobuf.Writer;
                 public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.PeerDataOperationRequestMessage.HistorySyncOnDemandRequest;
@@ -8544,7 +8765,8 @@ export namespace proto {
                     GENERIC_ERROR = 3,
                     ERROR_REQUEST_ON_NON_SMB_PRIMARY = 4,
                     ERROR_HOSTED_DEVICE_NOT_CONNECTED = 5,
-                    ERROR_HOSTED_DEVICE_LOGIN_TIME_NOT_SET = 6
+                    ERROR_HOSTED_DEVICE_LOGIN_TIME_NOT_SET = 6,
+                    ERROR_MULTI_PROVIDER_NOT_CONFIGURED = 7
                 }
 
                 interface IHistorySyncChunkRetryResponse {
@@ -9261,12 +9483,14 @@ export namespace proto {
         interface IRequestWelcomeMessageMetadata {
             localChatState?: (proto.Message.RequestWelcomeMessageMetadata.LocalChatState|null);
             welcomeTrigger?: (proto.Message.RequestWelcomeMessageMetadata.WelcomeTrigger|null);
+            botAgentMetadata?: (proto.IBotAgentMetadata|null);
         }
 
         class RequestWelcomeMessageMetadata implements IRequestWelcomeMessageMetadata {
             constructor(p?: proto.Message.IRequestWelcomeMessageMetadata);
             public localChatState?: (proto.Message.RequestWelcomeMessageMetadata.LocalChatState|null);
             public welcomeTrigger?: (proto.Message.RequestWelcomeMessageMetadata.WelcomeTrigger|null);
+            public botAgentMetadata?: (proto.IBotAgentMetadata|null);
             public static create(properties?: proto.Message.IRequestWelcomeMessageMetadata): proto.Message.RequestWelcomeMessageMetadata;
             public static encode(m: proto.Message.IRequestWelcomeMessageMetadata, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.RequestWelcomeMessageMetadata;
@@ -9547,6 +9771,7 @@ export namespace proto {
             isLottie?: (boolean|null);
             accessibilityLabel?: (string|null);
             premium?: (number|null);
+            emojis?: (string|null);
         }
 
         class StickerMessage implements IStickerMessage {
@@ -9572,6 +9797,7 @@ export namespace proto {
             public isLottie?: (boolean|null);
             public accessibilityLabel?: (string|null);
             public premium?: (number|null);
+            public emojis?: (string|null);
             public static create(properties?: proto.Message.IStickerMessage): proto.Message.StickerMessage;
             public static encode(m: proto.Message.IStickerMessage, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.Message.StickerMessage;
@@ -10067,6 +10293,7 @@ export namespace proto {
         limitSharingV2?: (proto.ILimitSharing|null);
         threadId?: (proto.IThreadID[]|null);
         weblinkRenderConfig?: (proto.WebLinkRenderConfig|null);
+        teeBotMetadata?: (Uint8Array|null);
     }
 
     class MessageContextInfo implements IMessageContextInfo {
@@ -10087,6 +10314,7 @@ export namespace proto {
         public limitSharingV2?: (proto.ILimitSharing|null);
         public threadId: proto.IThreadID[];
         public weblinkRenderConfig?: (proto.WebLinkRenderConfig|null);
+        public teeBotMetadata?: (Uint8Array|null);
         public static create(properties?: proto.IMessageContextInfo): proto.MessageContextInfo;
         public static encode(m: proto.IMessageContextInfo, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.MessageContextInfo;
@@ -10462,6 +10690,10 @@ export namespace proto {
         BUSINESS_BROADCAST_CAMPAIGN_ACTION = 81,
         BUSINESS_BROADCAST_INSIGHTS_ACTION = 82,
         CUSTOMER_DATA_ACTION = 83,
+        SUBSCRIPTIONS_SYNC_V2_ACTION = 84,
+        THREAD_PIN_ACTION = 85,
+        AUTO_ORGANIZE_BUSINESS_CHAT_SETTING = 86,
+        BIZ_AI_SETTINGS_NUDGE_ACTION = 87,
         SHARE_OWN_PN = 10001,
         BUSINESS_BROADCAST_ACTION = 10002,
         AI_THREAD_DELETE_ACTION = 10003
@@ -11273,6 +11505,26 @@ export namespace proto {
         public static getTypeUrl(typeUrlPrefix?: string): string;
     }
 
+    interface IScheduledMessageMetadata {
+        revealKeyId?: (string|null);
+        revealKey?: (Uint8Array|null);
+        scheduledTime?: (number|Long|null);
+    }
+
+    class ScheduledMessageMetadata implements IScheduledMessageMetadata {
+        constructor(p?: proto.IScheduledMessageMetadata);
+        public revealKeyId?: (string|null);
+        public revealKey?: (Uint8Array|null);
+        public scheduledTime?: (number|Long|null);
+        public static create(properties?: proto.IScheduledMessageMetadata): proto.ScheduledMessageMetadata;
+        public static encode(m: proto.IScheduledMessageMetadata, w?: $protobuf.Writer): $protobuf.Writer;
+        public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.ScheduledMessageMetadata;
+        public static fromObject(d: { [k: string]: any }): proto.ScheduledMessageMetadata;
+        public static toObject(m: proto.ScheduledMessageMetadata, o?: $protobuf.IConversionOptions): { [k: string]: any };
+        public toJSON(): { [k: string]: any };
+        public static getTypeUrl(typeUrlPrefix?: string): string;
+    }
+
     interface ISenderKeyDistributionMessage {
         id?: (number|null);
         iteration?: (number|null);
@@ -11745,7 +11997,8 @@ export namespace proto {
                 THREADS = 7,
                 APPLE_MUSIC = 8,
                 SHARECHAT = 9,
-                GOOGLE_PHOTOS = 10
+                GOOGLE_PHOTOS = 10,
+                SOUNDCLOUD = 11
             }
         }
 
@@ -12056,6 +12309,10 @@ export namespace proto {
         businessBroadcastCampaignAction?: (proto.SyncActionValue.IBusinessBroadcastCampaignAction|null);
         businessBroadcastInsightsAction?: (proto.SyncActionValue.IBusinessBroadcastInsightsAction|null);
         customerDataAction?: (proto.SyncActionValue.ICustomerDataAction|null);
+        subscriptionsSyncV2Action?: (proto.SyncActionValue.ISubscriptionsSyncV2Action|null);
+        threadPinAction?: (proto.SyncActionValue.IThreadPinAction|null);
+        autoOrganizeBusinessChatSetting?: (proto.SyncActionValue.IAutoOrganizeBusinessChatSetting|null);
+        bizAiSettingsNudgeAction?: (proto.SyncActionValue.IBizAISettingsNudgeAction|null);
     }
 
     class SyncActionValue implements ISyncActionValue {
@@ -12134,6 +12391,10 @@ export namespace proto {
         public businessBroadcastCampaignAction?: (proto.SyncActionValue.IBusinessBroadcastCampaignAction|null);
         public businessBroadcastInsightsAction?: (proto.SyncActionValue.IBusinessBroadcastInsightsAction|null);
         public customerDataAction?: (proto.SyncActionValue.ICustomerDataAction|null);
+        public subscriptionsSyncV2Action?: (proto.SyncActionValue.ISubscriptionsSyncV2Action|null);
+        public threadPinAction?: (proto.SyncActionValue.IThreadPinAction|null);
+        public autoOrganizeBusinessChatSetting?: (proto.SyncActionValue.IAutoOrganizeBusinessChatSetting|null);
+        public bizAiSettingsNudgeAction?: (proto.SyncActionValue.IBizAISettingsNudgeAction|null);
         public static create(properties?: proto.ISyncActionValue): proto.SyncActionValue;
         public static encode(m: proto.ISyncActionValue, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue;
@@ -12215,6 +12476,22 @@ export namespace proto {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        interface IAutoOrganizeBusinessChatSetting {
+            autoOrganize?: (boolean|null);
+        }
+
+        class AutoOrganizeBusinessChatSetting implements IAutoOrganizeBusinessChatSetting {
+            constructor(p?: proto.SyncActionValue.IAutoOrganizeBusinessChatSetting);
+            public autoOrganize?: (boolean|null);
+            public static create(properties?: proto.SyncActionValue.IAutoOrganizeBusinessChatSetting): proto.SyncActionValue.AutoOrganizeBusinessChatSetting;
+            public static encode(m: proto.SyncActionValue.IAutoOrganizeBusinessChatSetting, w?: $protobuf.Writer): $protobuf.Writer;
+            public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.AutoOrganizeBusinessChatSetting;
+            public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.AutoOrganizeBusinessChatSetting;
+            public static toObject(m: proto.SyncActionValue.AutoOrganizeBusinessChatSetting, o?: $protobuf.IConversionOptions): { [k: string]: any };
+            public toJSON(): { [k: string]: any };
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
         interface IAvatarUpdatedAction {
             eventType?: (proto.SyncActionValue.AvatarUpdatedAction.AvatarEventType|null);
             recentAvatarStickers?: (proto.SyncActionValue.IStickerAction[]|null);
@@ -12242,6 +12519,38 @@ export namespace proto {
             }
         }
 
+        interface IBizAISettingsNudgeAction {
+            category?: (proto.SyncActionValue.BizAISettingsNudgeAction.BizAISettingsCategory|null);
+            version?: (number|Long|null);
+            updatedAtMs?: (number|Long|null);
+        }
+
+        class BizAISettingsNudgeAction implements IBizAISettingsNudgeAction {
+            constructor(p?: proto.SyncActionValue.IBizAISettingsNudgeAction);
+            public category?: (proto.SyncActionValue.BizAISettingsNudgeAction.BizAISettingsCategory|null);
+            public version?: (number|Long|null);
+            public updatedAtMs?: (number|Long|null);
+            public static create(properties?: proto.SyncActionValue.IBizAISettingsNudgeAction): proto.SyncActionValue.BizAISettingsNudgeAction;
+            public static encode(m: proto.SyncActionValue.IBizAISettingsNudgeAction, w?: $protobuf.Writer): $protobuf.Writer;
+            public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.BizAISettingsNudgeAction;
+            public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.BizAISettingsNudgeAction;
+            public static toObject(m: proto.SyncActionValue.BizAISettingsNudgeAction, o?: $protobuf.IConversionOptions): { [k: string]: any };
+            public toJSON(): { [k: string]: any };
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
+        namespace BizAISettingsNudgeAction {
+
+            enum BizAISettingsCategory {
+                UNKNOWN = 0,
+                INSTRUCTIONS = 1,
+                RESPONSE_SETTINGS = 2,
+                EXAMPLE_RESPONSES = 3,
+                KNOWLEDGE = 4,
+                LEAD_GEN = 5
+            }
+        }
+
         interface IBotWelcomeRequestAction {
             isSent?: (boolean|null);
         }
@@ -12361,6 +12670,7 @@ export namespace proto {
             participants?: (proto.SyncActionValue.IBroadcastListParticipant[]|null);
             listName?: (string|null);
             labelIds?: (string[]|null);
+            audienceExpression?: (string|null);
         }
 
         class BusinessBroadcastListAction implements IBusinessBroadcastListAction {
@@ -12369,6 +12679,7 @@ export namespace proto {
             public participants: proto.SyncActionValue.IBroadcastListParticipant[];
             public listName?: (string|null);
             public labelIds: string[];
+            public audienceExpression?: (string|null);
             public static create(properties?: proto.SyncActionValue.IBusinessBroadcastListAction): proto.SyncActionValue.BusinessBroadcastListAction;
             public static encode(m: proto.SyncActionValue.IBusinessBroadcastListAction, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.BusinessBroadcastListAction;
@@ -12797,7 +13108,8 @@ export namespace proto {
                 SERVER_ASSIGNED = 7,
                 DRAFTED = 8,
                 AI_HANDOFF = 9,
-                CHANNELS = 10
+                CHANNELS = 10,
+                AI_RESPONDING = 11
             }
         }
 
@@ -13439,6 +13751,8 @@ export namespace proto {
             isStatusNotificationEnabled?: (boolean|null);
             statusNotificationToneId?: (number|null);
             shouldPlaySoundForCallNotification?: (boolean|null);
+            chatThemeId?: (string|null);
+            colorSchemeId?: (string|null);
         }
 
         class SettingsSyncAction implements ISettingsSyncAction {
@@ -13474,6 +13788,8 @@ export namespace proto {
             public isStatusNotificationEnabled?: (boolean|null);
             public statusNotificationToneId?: (number|null);
             public shouldPlaySoundForCallNotification?: (boolean|null);
+            public chatThemeId?: (string|null);
+            public colorSchemeId?: (string|null);
             public static create(properties?: proto.SyncActionValue.ISettingsSyncAction): proto.SyncActionValue.SettingsSyncAction;
             public static encode(m: proto.SyncActionValue.ISettingsSyncAction, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.SettingsSyncAction;
@@ -13530,7 +13846,9 @@ export namespace proto {
                 IS_GROUP_REACTIONS_NOTIFICATION_ENABLED = 28,
                 IS_STATUS_NOTIFICATION_ENABLED = 29,
                 STATUS_NOTIFICATION_TONE_ID = 30,
-                SHOULD_PLAY_SOUND_FOR_CALL_NOTIFICATION = 31
+                SHOULD_PLAY_SOUND_FOR_CALL_NOTIFICATION = 31,
+                CHAT_THEME_ID = 32,
+                COLOR_SCHEME_ID = 33
             }
 
             enum SettingPlatform {
@@ -13579,6 +13897,8 @@ export namespace proto {
             userJid?: (string[]|null);
             shareToFB?: (boolean|null);
             shareToIG?: (boolean|null);
+            customLists?: (proto.SyncActionValue.StatusPrivacyAction.ICustomList[]|null);
+            modes?: (proto.SyncActionValue.StatusPrivacyAction.StatusDistributionMode[]|null);
         }
 
         class StatusPrivacyAction implements IStatusPrivacyAction {
@@ -13587,6 +13907,8 @@ export namespace proto {
             public userJid: string[];
             public shareToFB?: (boolean|null);
             public shareToIG?: (boolean|null);
+            public customLists: proto.SyncActionValue.StatusPrivacyAction.ICustomList[];
+            public modes: proto.SyncActionValue.StatusPrivacyAction.StatusDistributionMode[];
             public static create(properties?: proto.SyncActionValue.IStatusPrivacyAction): proto.SyncActionValue.StatusPrivacyAction;
             public static encode(m: proto.SyncActionValue.IStatusPrivacyAction, w?: $protobuf.Writer): $protobuf.Writer;
             public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.StatusPrivacyAction;
@@ -13598,11 +13920,36 @@ export namespace proto {
 
         namespace StatusPrivacyAction {
 
+            interface ICustomList {
+                listId?: (string|null);
+                name?: (string|null);
+                emoji?: (string|null);
+                isSelected?: (boolean|null);
+                userJid?: (string[]|null);
+            }
+
+            class CustomList implements ICustomList {
+                constructor(p?: proto.SyncActionValue.StatusPrivacyAction.ICustomList);
+                public listId?: (string|null);
+                public name?: (string|null);
+                public emoji?: (string|null);
+                public isSelected?: (boolean|null);
+                public userJid: string[];
+                public static create(properties?: proto.SyncActionValue.StatusPrivacyAction.ICustomList): proto.SyncActionValue.StatusPrivacyAction.CustomList;
+                public static encode(m: proto.SyncActionValue.StatusPrivacyAction.ICustomList, w?: $protobuf.Writer): $protobuf.Writer;
+                public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.StatusPrivacyAction.CustomList;
+                public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.StatusPrivacyAction.CustomList;
+                public static toObject(m: proto.SyncActionValue.StatusPrivacyAction.CustomList, o?: $protobuf.IConversionOptions): { [k: string]: any };
+                public toJSON(): { [k: string]: any };
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
             enum StatusDistributionMode {
                 ALLOW_LIST = 0,
                 DENY_LIST = 1,
                 CONTACTS = 2,
-                CLOSE_FRIENDS = 3
+                CLOSE_FRIENDS = 3,
+                CUSTOM_LIST = 4
             }
         }
 
@@ -13666,6 +14013,79 @@ export namespace proto {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        interface ISubscriptionsSyncV2Action {
+            subscriptions?: (proto.SyncActionValue.SubscriptionsSyncV2Action.ISubscriptionInfo[]|null);
+            paidFeature?: (proto.SyncActionValue.SubscriptionsSyncV2Action.IPaidFeature[]|null);
+        }
+
+        class SubscriptionsSyncV2Action implements ISubscriptionsSyncV2Action {
+            constructor(p?: proto.SyncActionValue.ISubscriptionsSyncV2Action);
+            public subscriptions: proto.SyncActionValue.SubscriptionsSyncV2Action.ISubscriptionInfo[];
+            public paidFeature: proto.SyncActionValue.SubscriptionsSyncV2Action.IPaidFeature[];
+            public static create(properties?: proto.SyncActionValue.ISubscriptionsSyncV2Action): proto.SyncActionValue.SubscriptionsSyncV2Action;
+            public static encode(m: proto.SyncActionValue.ISubscriptionsSyncV2Action, w?: $protobuf.Writer): $protobuf.Writer;
+            public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.SubscriptionsSyncV2Action;
+            public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.SubscriptionsSyncV2Action;
+            public static toObject(m: proto.SyncActionValue.SubscriptionsSyncV2Action, o?: $protobuf.IConversionOptions): { [k: string]: any };
+            public toJSON(): { [k: string]: any };
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
+        namespace SubscriptionsSyncV2Action {
+
+            interface IPaidFeature {
+                name?: (string|null);
+                enabled?: (boolean|null);
+                limit?: (number|null);
+                expirationTime?: (number|Long|null);
+            }
+
+            class PaidFeature implements IPaidFeature {
+                constructor(p?: proto.SyncActionValue.SubscriptionsSyncV2Action.IPaidFeature);
+                public name?: (string|null);
+                public enabled?: (boolean|null);
+                public limit?: (number|null);
+                public expirationTime?: (number|Long|null);
+                public static create(properties?: proto.SyncActionValue.SubscriptionsSyncV2Action.IPaidFeature): proto.SyncActionValue.SubscriptionsSyncV2Action.PaidFeature;
+                public static encode(m: proto.SyncActionValue.SubscriptionsSyncV2Action.IPaidFeature, w?: $protobuf.Writer): $protobuf.Writer;
+                public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.SubscriptionsSyncV2Action.PaidFeature;
+                public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.SubscriptionsSyncV2Action.PaidFeature;
+                public static toObject(m: proto.SyncActionValue.SubscriptionsSyncV2Action.PaidFeature, o?: $protobuf.IConversionOptions): { [k: string]: any };
+                public toJSON(): { [k: string]: any };
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+
+            interface ISubscriptionInfo {
+                id?: (string|null);
+                tier?: (number|null);
+                status?: (string|null);
+                startTime?: (number|Long|null);
+                endTime?: (number|Long|null);
+                isPlatformChanged?: (boolean|null);
+                source?: (string|null);
+                creationTime?: (number|Long|null);
+            }
+
+            class SubscriptionInfo implements ISubscriptionInfo {
+                constructor(p?: proto.SyncActionValue.SubscriptionsSyncV2Action.ISubscriptionInfo);
+                public id?: (string|null);
+                public tier?: (number|null);
+                public status?: (string|null);
+                public startTime?: (number|Long|null);
+                public endTime?: (number|Long|null);
+                public isPlatformChanged?: (boolean|null);
+                public source?: (string|null);
+                public creationTime?: (number|Long|null);
+                public static create(properties?: proto.SyncActionValue.SubscriptionsSyncV2Action.ISubscriptionInfo): proto.SyncActionValue.SubscriptionsSyncV2Action.SubscriptionInfo;
+                public static encode(m: proto.SyncActionValue.SubscriptionsSyncV2Action.ISubscriptionInfo, w?: $protobuf.Writer): $protobuf.Writer;
+                public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.SubscriptionsSyncV2Action.SubscriptionInfo;
+                public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.SubscriptionsSyncV2Action.SubscriptionInfo;
+                public static toObject(m: proto.SyncActionValue.SubscriptionsSyncV2Action.SubscriptionInfo, o?: $protobuf.IConversionOptions): { [k: string]: any };
+                public toJSON(): { [k: string]: any };
+                public static getTypeUrl(typeUrlPrefix?: string): string;
+            }
+        }
+
         interface ISyncActionMessage {
             key?: (proto.IMessageKey|null);
             timestamp?: (number|Long|null);
@@ -13704,6 +14124,22 @@ export namespace proto {
             public static getTypeUrl(typeUrlPrefix?: string): string;
         }
 
+        interface IThreadPinAction {
+            pinned?: (boolean|null);
+        }
+
+        class ThreadPinAction implements IThreadPinAction {
+            constructor(p?: proto.SyncActionValue.IThreadPinAction);
+            public pinned?: (boolean|null);
+            public static create(properties?: proto.SyncActionValue.IThreadPinAction): proto.SyncActionValue.ThreadPinAction;
+            public static encode(m: proto.SyncActionValue.IThreadPinAction, w?: $protobuf.Writer): $protobuf.Writer;
+            public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.SyncActionValue.ThreadPinAction;
+            public static fromObject(d: { [k: string]: any }): proto.SyncActionValue.ThreadPinAction;
+            public static toObject(m: proto.SyncActionValue.ThreadPinAction, o?: $protobuf.IConversionOptions): { [k: string]: any };
+            public toJSON(): { [k: string]: any };
+            public static getTypeUrl(typeUrlPrefix?: string): string;
+        }
+
         interface ITimeFormatAction {
             isTwentyFourHourFormatEnabled?: (boolean|null);
         }
@@ -14521,6 +14957,8 @@ export namespace proto {
         quarantinedMessage?: (proto.IQuarantinedMessage|null);
         nonJidMentions?: (number|null);
         hsmTag?: (string|null);
+        ephemeralExpirationTimestamp?: (number|Long|null);
+        scheduledMessageMetadata?: (proto.IScheduledMessageMetadata|null);
     }
 
     class WebMessageInfo implements IWebMessageInfo {
@@ -14593,6 +15031,8 @@ export namespace proto {
         public quarantinedMessage?: (proto.IQuarantinedMessage|null);
         public nonJidMentions?: (number|null);
         public hsmTag?: (string|null);
+        public ephemeralExpirationTimestamp?: (number|Long|null);
+        public scheduledMessageMetadata?: (proto.IScheduledMessageMetadata|null);
         public static create(properties?: proto.IWebMessageInfo): proto.WebMessageInfo;
         public static encode(m: proto.IWebMessageInfo, w?: $protobuf.Writer): $protobuf.Writer;
         public static decode(r: ($protobuf.Reader|Uint8Array), l?: number): proto.WebMessageInfo;
@@ -14844,7 +15284,9 @@ export namespace proto {
             QUARANTINED_MESSAGE = 220,
             GROUP_MEMBER_SHARE_GROUP_HISTORY_MODE = 221,
             GROUP_OPEN_BOT_ADDED = 222,
-            GROUP_TEE_BOT_ADDED = 223
+            GROUP_TEE_BOT_ADDED = 223,
+            CONTACT_INFO = 224,
+            SCHEDULED_MESSAGE_CREATED = 225
         }
     }
 

docs/VIEW_ONCE.md

@@ -0,0 +1,531 @@
+# Mensagens View-Once (Visualização Única) — Guia de Implementação
+
+**Data:** 2026-03-23
+**Versão:** 1.0
+
+---
+
+## 1. O que é View-Once
+
+Mensagem de visualização única é um tipo especial de mídia (imagem, vídeo ou áudio) que o destinatário pode abrir apenas uma vez. Após abrir, o conteúdo some permanentemente.
+
+---
+
+> ## ⚠️ RESTRIÇÃO CRÍTICA — Contas Hosted (Meta Business Cloud API)
+>
+> **Contas registradas como "hosted" na Meta Business Cloud API têm view-once bloqueado pelo servidor do WhatsApp.**
+>
+> Essa restrição se aplica a **todos os clientes** (Android, iOS, WA Web) e **não há como contornar por código** — é uma política imposta diretamente pelo servidor WA para contas hosted.
+>
+> **Como identificar se sua conta é hosted:**
+> - A conta foi criada via Meta Business Cloud API (WABA)
+> - Aparece como "Meta" ou "Business Cloud" nas configurações do WhatsApp Business Manager
+>
+> **Contas não-hosted** (registradas diretamente via QR code ou pair code) **funcionam normalmente** com view-once.
+
+---
+
+**Comportamento em cada dispositivo após envio via API (contas não-hosted):**
+
+| Dispositivo | O que aparece |
+|---|---|
+| Destinatário (Android/iOS) | Recebe a mídia com ícone de olhinho — pode abrir uma vez |
+| Android principal do remetente | Mostra na conversa que a mensagem foi enviada (ícone de olhinho) |
+| WA Web do remetente | "Aguardando mensagem. Abra o WhatsApp no seu celular." |
+
+> **Nota:** A mensagem "Aguardando mensagem..." no WA Web é o comportamento correto e esperado quando o envio vem de um companion (API). É uma limitação do protocolo WhatsApp — o servidor só permite que o celular principal notifique companions com o conteúdo da view-once.
+
+---
+
+## 2. Como Enviar via API
+
+### 2.1 Imagem
+
+```bash
+curl -X POST https://sua-api.com/v1/messages/send_image \
+  -H "Content-Type: application/json" \
+  -H "x-api-key: SEU_API_KEY" \
+  -d '{
+    "instance": "nome-da-instancia",
+    "to": "5511999999999",
+    "caption": "Olha só isso!",
+    "imageUrl": "https://exemplo.com/foto.jpg",
+    "viewOnce": true
+  }'
+```
+
+**Resposta de sucesso:**
+```json
+{ "ok": true }
+```
+
+### 2.2 Vídeo
+
+```bash
+curl -X POST https://sua-api.com/v1/messages/send_video \
+  -H "Content-Type: application/json" \
+  -H "x-api-key: SEU_API_KEY" \
+  -d '{
+    "instance": "nome-da-instancia",
+    "to": "5511999999999",
+    "caption": "Assista uma vez",
+    "videoUrl": "https://exemplo.com/video.mp4",
+    "viewOnce": true
+  }'
+```
+
+### 2.3 Áudio
+
+```bash
+curl -X POST https://sua-api.com/v1/messages/send_audio \
+  -H "Content-Type: application/json" \
+  -H "x-api-key: SEU_API_KEY" \
+  -d '{
+    "instance": "nome-da-instancia",
+    "to": "5511999999999",
+    "audioUrl": "https://exemplo.com/audio.ogg",
+    "ptt": false,
+    "viewOnce": true
+  }'
+```
+
+### 2.4 Usando Base64 (sem URL pública)
+
+```bash
+curl -X POST https://sua-api.com/v1/messages/send_image \
+  -H "Content-Type: application/json" \
+  -H "x-api-key: SEU_API_KEY" \
+  -d '{
+    "instance": "nome-da-instancia",
+    "to": "5511999999999",
+    "imageBase64": "data:image/jpeg;base64,/9j/4AAQSkZJRgAB...",
+    "viewOnce": true
+  }'
+```
+
+---
+
+## 3. Como Receber via Webhook
+
+Quando um contato envia uma mensagem de visualização única para o número conectado na API, o webhook recebe o evento com `key.isViewOnce = true`.
+
+### 3.1 Estrutura do evento recebido
+
+```json
+{
+  "event": "messages.upsert",
+  "instance": "nome-da-instancia",
+  "data": {
+    "messages": [
+      {
+        "key": {
+          "remoteJid": "5511999999999@s.whatsapp.net",
+          "fromMe": false,
+          "id": "3EB0ABCDEF123456",
+          "isViewOnce": true
+        },
+        "message": {
+          "viewOnceMessageV2": {
+            "message": {
+              "imageMessage": {
+                "url": "https://mmg.whatsapp.net/...",
+                "mimetype": "image/jpeg",
+                "mediaKey": "base64...",
+                "fileEncSha256": "base64...",
+                "directPath": "/v/...",
+                "viewOnce": true
+              }
+            }
+          }
+        },
+        "messageTimestamp": 1742700000,
+        "pushName": "João Silva"
+      }
+    ],
+    "type": "notify"
+  }
+}
+```
+
+### 3.2 Como identificar que é view-once
+
+O campo principal para identificar é `key.isViewOnce = true`. Existem dois caminhos para confirmar:
+
+```javascript
+function isViewOnce(msg) {
+  // Caminho 1: flag direta (mais simples)
+  if (msg.key?.isViewOnce) return true
+
+  // Caminho 2: verificar o wrapper da mensagem
+  const inner =
+    msg.message?.viewOnceMessageV2?.message ||
+    msg.message?.viewOnceMessage?.message ||
+    msg.message?.viewOnceMessageV2Extension?.message
+
+  return !!(
+    inner?.imageMessage?.viewOnce ||
+    inner?.videoMessage?.viewOnce ||
+    inner?.audioMessage?.viewOnce
+  )
+}
+```
+
+### 3.3 Como acessar a mídia
+
+```javascript
+function getViewOnceMedia(msg) {
+  const inner =
+    msg.message?.viewOnceMessageV2?.message ||
+    msg.message?.viewOnceMessage?.message ||
+    msg.message?.viewOnceMessageV2Extension?.message
+
+  if (!inner) return null
+
+  if (inner.imageMessage) return { type: 'image', media: inner.imageMessage }
+  if (inner.videoMessage) return { type: 'video', media: inner.videoMessage }
+  if (inner.audioMessage) return { type: 'audio', media: inner.audioMessage }
+
+  return null
+}
+
+// Uso:
+const media = getViewOnceMedia(msg)
+if (media) {
+  console.log(`View-once ${media.type}`)
+  console.log('URL:', media.media.url)
+  console.log('DirectPath:', media.media.directPath)
+  console.log('MediaKey:', media.media.mediaKey) // necessário para download
+}
+```
+
+---
+
+## 4. Como Exibir numa Ferramenta (Frontend/CRM)
+
+### 4.1 Lógica de detecção e exibição
+
+```javascript
+function renderMessage(msg) {
+  if (!isViewOnce(msg)) {
+    // Renderizar mensagem normal
+    return renderNormalMessage(msg)
+  }
+
+  const media = getViewOnceMedia(msg)
+  if (!media) return
+
+  // Verificar se já foi aberta (controle local da ferramenta)
+  const alreadyOpened = localStorage.getItem(`vo_${msg.key.id}`)
+
+  if (alreadyOpened) {
+    // Mostrar placeholder de "já visualizado"
+    return renderViewOncePlaceholder(media.type, msg.key.fromMe)
+  }
+
+  if (msg.key.fromMe) {
+    // Mensagem enviada por mim — nunca mostrar conteúdo
+    return renderSentViewOnce(media.type)
+  }
+
+  // Mensagem recebida — mostrar botão para "abrir uma vez"
+  return renderViewOnceButton(media.type, msg)
+}
+```
+
+### 4.2 Componente de exibição — mensagem recebida
+
+```javascript
+function renderViewOnceButton(type, msg) {
+  const icons = { image: '📷', video: '🎥', audio: '🎵' }
+  const labels = { image: 'Foto', video: 'Vídeo', áudio: 'Áudio' }
+
+  return `
+    <div class="view-once-bubble received">
+      <span class="view-once-icon">${icons[type]}</span>
+      <span class="view-once-label">${labels[type]} de visualização única</span>
+      <button onclick="openViewOnce('${msg.key.id}', '${type}')">
+        Abrir
+      </button>
+    </div>
+  `
+}
+
+async function openViewOnce(msgId, type) {
+  // 1. Marcar como aberta ANTES de mostrar (só uma chance)
+  localStorage.setItem(`vo_${msgId}`, '1')
+
+  // 2. Baixar e mostrar a mídia
+  const mediaUrl = await downloadViewOnceMedia(msgId)
+  showMedia(type, mediaUrl)
+
+  // 3. Após fechar/visualizar, substituir pelo placeholder
+  onMediaClosed(() => {
+    replaceWithPlaceholder(msgId, type)
+  })
+}
+```
+
+### 4.3 Componente de exibição — mensagem enviada
+
+```javascript
+function renderSentViewOnce(type) {
+  const labels = { image: 'Foto', video: 'Vídeo', audio: 'Áudio' }
+  return `
+    <div class="view-once-bubble sent">
+      <span class="view-once-icon">👁️</span>
+      <span>${labels[type]} de visualização única</span>
+      <span class="view-once-status">Enviada</span>
+    </div>
+  `
+}
+```
+
+### 4.4 Placeholder após visualização
+
+```javascript
+function renderViewOncePlaceholder(type, fromMe) {
+  const labels = { image: 'foto', video: 'vídeo', audio: 'áudio' }
+  const text = fromMe
+    ? `Você enviou uma ${labels[type]} de visualização única`
+    : `${labels[type]} de visualização única aberta`
+
+  return `
+    <div class="view-once-bubble placeholder">
+      <span class="view-once-icon">🚫</span>
+      <span>${text}</span>
+    </div>
+  `
+}
+```
+
+### 4.5 CSS sugerido
+
+```css
+.view-once-bubble {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 14px;
+  border-radius: 12px;
+  max-width: 280px;
+}
+
+.view-once-bubble.received {
+  background: #f0f0f0;
+  color: #333;
+}
+
+.view-once-bubble.sent {
+  background: #dcf8c6;
+  color: #333;
+  align-self: flex-end;
+}
+
+.view-once-bubble.placeholder {
+  background: #e8e8e8;
+  color: #999;
+  font-style: italic;
+}
+
+.view-once-bubble button {
+  background: #25d366;
+  color: white;
+  border: none;
+  border-radius: 8px;
+  padding: 6px 12px;
+  cursor: pointer;
+  font-size: 13px;
+}
+```
+
+---
+
+## 5. Código Implementado na API
+
+### 5.1 Geração da mensagem — `src/Utils/messages.ts`
+
+Quando `viewOnce: true` é passado, a mídia é encapsulada no wrapper moderno `viewOnceMessageV2` (campo 55 do proto) e o flag `viewOnce=true` é setado na mídia interna:
+
+```typescript
+if (hasOptionalProperty(message, 'viewOnce') && !!message.viewOnce) {
+    // Seta viewOnce=true na mensagem de mídia interna
+    if (m.imageMessage) m.imageMessage.viewOnce = true
+    else if (m.videoMessage) m.videoMessage.viewOnce = true
+    else if (m.audioMessage) m.audioMessage.viewOnce = true
+    // Usa viewOnceMessageV2 (campo 55) — formato atual do WA
+    m = { viewOnceMessageV2: { message: m } }
+}
+```
+
+### 5.2 Envio — `src/Socket/messages-send.ts`
+
+**Detecção de view-once real** (não confunde com botões/listas que também usam o wrapper `viewOnceMessage`):
+
+```typescript
+// Detecta view-once real pela flag viewOnce na mídia interna.
+// viewOnceMessage* wrappers são também usados por botões/listas/carrosséis
+// (que carregam interactiveMessage dentro) — esses NÃO têm viewOnce=true na mídia.
+const viewOnceInner =
+    message.viewOnceMessageV2?.message ||
+    message.viewOnceMessage?.message ||
+    message.viewOnceMessageV2Extension?.message
+const isViewOnceMsg = !!(
+    viewOnceInner?.imageMessage?.viewOnce ||
+    viewOnceInner?.videoMessage?.viewOnce ||
+    viewOnceInner?.audioMessage?.viewOnce
+)
+
+// Para view-once: DSM enviado apenas para o celular principal (device=0).
+// Companions (device>0) são omitidos — o servidor WA gera
+// <unavailable type="view_once"/> automaticamente para eles.
+const viewOnceMeRecipients = isViewOnceMsg
+    ? meRecipients.filter(jid => !jidDecode(jid)?.device)
+    : meRecipients
+
+// assertSessions apenas para quem vai realmente receber
+await assertSessions([...viewOnceMeRecipients, ...otherRecipients])
+
+const [meNodes, otherNodes] = await Promise.all([
+    createParticipantNodes(viewOnceMeRecipients, meMsg || message, extraAttrs),
+    createParticipantNodes(otherRecipients, message, extraAttrs)
+])
+participants.push(...meNodes)
+participants.push(...otherNodes)
+
+// phash recalculado com os participantes reais
+const phashRecipients = isViewOnceMsg
+    ? [...viewOnceMeRecipients, ...otherRecipients]
+    : [...meRecipients, ...otherRecipients]
+if (phashRecipients.length > 0) {
+    extraAttrs['phash'] = generateParticipantHashV2(phashRecipients)
+}
+```
+
+**`getMediaType()` — garante que vídeo e áudio view-once sejam entregues:**
+
+```typescript
+const getMediaType = (message: proto.IMessage) => {
+    // Desencapsula wrapper view-once antes de verificar o tipo de mídia.
+    // Sem isso, message.videoMessage e message.audioMessage são undefined
+    // (estão dentro do wrapper) e o atributo mediatype ficaria ausente no
+    // enc node — o servidor WA descarta silenciosamente vídeo/áudio view-once.
+    const inner =
+        message.viewOnceMessage?.message ||
+        message.viewOnceMessageV2?.message ||
+        message.viewOnceMessageV2Extension?.message
+    if (inner) {
+        return getMediaType(inner)
+    }
+
+    if (message.imageMessage) return 'image'
+    else if (message.videoMessage) return 'video'
+    // ...
+}
+```
+
+### 5.3 Recepção — `src/Utils/decode-wa-message.ts`
+
+Quando a API recebe uma view-once como companion (linked device), o servidor envia dois stanzas:
+
+- **Stanza 1** (`enc`): conteúdo completo com metadados da mídia
+- **Stanza 2** (`unavailable type="view_once"`): sinal de sync
+
+O stanza 1 é detectado e marcado corretamente:
+
+```typescript
+// Detecta view-once na stanza 1 recebida por linked device.
+// O wrapper viewOnceMessage também é usado por mensagens interativas
+// (interactiveMessage, listMessage) — esses NÃO têm viewOnce=true na mídia.
+const viewOnceInner =
+    msg.viewOnceMessage?.message ||
+    msg.viewOnceMessageV2?.message ||
+    msg.viewOnceMessageV2Extension?.message
+if (
+    viewOnceInner?.imageMessage?.viewOnce ||
+    viewOnceInner?.videoMessage?.viewOnce ||
+    viewOnceInner?.audioMessage?.viewOnce
+) {
+    fullMessage.key.isViewOnce = true
+}
+```
+
+---
+
+## 6. Fluxo Completo
+
+```
+API envia view-once para destinatário
+│
+├── Protobuf gerado:
+│   viewOnceMessageV2 {
+│     message {
+│       imageMessage { viewOnce: true, url, mediaKey, ... }
+│     }
+│   }
+│
+├── Stanza enviado ao servidor WA:
+│   <message to="destinatario@s.whatsapp.net" type="media">
+│     <enc type="pkmsg">...viewOnceMessageV2 cifrado...</enc>   ← para o destinatário
+│     <participants>
+│       <to jid="meu-numero:0@lid">                             ← celular principal
+│         <enc type="msg">...DSM{viewOnceMessageV2}...</enc>
+│       </to>
+│       <!-- device>0 omitidos — servidor gera unavailable -->
+│     </participants>
+│   </message>
+│
+└── Distribuição pelo servidor:
+    ├── Destinatário      → recebe enc → abre uma vez ✅
+    ├── Celular principal → recebe DSM → mostra "você enviou" ✅
+    └── WA Web            → recebe <unavailable> → "Aguardando..." ✅
+
+
+Destinatário envia view-once de volta para a API
+│
+├── Stanza recebido pela API (stanza 1 — enc com conteúdo):
+│   <message from="destinatario@s.whatsapp.net" type="media">
+│     <enc type="msg">...viewOnceMessageV2 cifrado...</enc>
+│   </message>
+│
+├── decode-wa-message.ts:
+│   └── Descriptografa → detecta viewOnce=true → seta key.isViewOnce=true
+│
+├── Stanza recebido (stanza 2 — unavailable, ignorado):
+│   <message from="...">
+│     <unavailable type="view_once"/>
+│   </message>
+│
+└── Webhook emitido:
+    messages.upsert → msg.key.isViewOnce = true ✅
+```
+
+---
+
+## 7. Limitações
+
+| Situação | Comportamento | Motivo |
+|---|---|---|
+| **Conta hosted (Meta Business Cloud API)** | **View-once bloqueado para todos os clientes** | **Política do servidor WA para contas hosted — sem workaround** |
+| WA Web do remetente | "Aguardando mensagem. Abra no celular." | Servidor WA só aceita `<unavailable>` vindo do celular principal, não de companions |
+| View-once de documento/sticker | Não suportado | Limitação do protocolo WA — só imagem, vídeo e áudio |
+| `error_479` nos logs | Normal, não é erro | TcToken é atualizado após o envio de view-once |
+| Companion não consegue abrir | Por design | O conteúdo não é entregue para linked devices |
+
+---
+
+## 8. Checklist de Validação
+
+**Envio:**
+- [ ] Destinatário recebe com ícone de olhinho
+- [ ] Destinatário consegue abrir a mídia
+- [ ] Após abrir, a mídia some
+- [ ] Celular principal do remetente mostra "você enviou" com ícone de olhinho
+- [ ] WA Web do remetente mostra "Aguardando mensagem..."
+- [ ] Funciona para imagem, vídeo e áudio
+- [ ] Logs mostram `📤 Message sent` (error_479 é normal)
+
+**Recepção:**
+- [ ] Webhook recebe `key.isViewOnce = true`
+- [ ] `viewOnceMessageV2.message.imageMessage` (ou video/audio) está presente
+- [ ] API não crasha ao receber view-once de outro dispositivo
+- [ ] Mensagem interativa (botão/lista) enviada após view-once não é afetada

package.json

@@ -47,7 +47,7 @@
     "fflate": "^0.8.2",
     "libsignal": "github:whiskeysockets/libsignal-node",
     "lru-cache": "^11.2.6",
-    "music-metadata": "^11.12.0",
+    "music-metadata": "^11.12.3",
     "p-queue": "^9.0.0",
     "pino": "^10.3.1",
     "prom-client": "^15.1.3",

src/Defaults/baileys-version.json

@@ -1 +1 @@
-{"version":[2,3000,1034641024]}
+{"version":[2,3000,1038167900]}

src/Defaults/index.ts

@@ -31,9 +31,26 @@ export const STATUS_EXPIRY_SECONDS = 24 * 60 * 60
 export const PLACEHOLDER_MAX_AGE_SECONDS = 7 * 24 * 60 * 60
 
 export const NOISE_MODE = 'Noise_XX_25519_AESGCM_SHA256\0\0\0\0'
-export const DICT_VERSION = 3
+
+/**
+ * Protocol mode: 'web' (default) or 'native' (experimental)
+ * - web: WA\x06\x03 — standard WhatsApp Web protocol
+ * - native: WAM\x05 — native Android protocol (may enable view-once media on companions)
+ *
+ * Set via BAILEYS_PROTOCOL env var:
+ *   BAILEYS_PROTOCOL=native
+ */
+const PROTOCOL_MODE = process.env.BAILEYS_PROTOCOL?.trim().toLowerCase() === 'native' ? 'native' : 'web'
+
+export const DICT_VERSION = PROTOCOL_MODE === 'native' ? 5 : 3
 export const KEY_BUNDLE_TYPE = Buffer.from([5])
-export const NOISE_WA_HEADER = Buffer.from([87, 65, 6, DICT_VERSION]) // last is "DICT_VERSION"
+
+// WA\x06\x03 = web protocol, WAM\x05 = native Android protocol
+export const NOISE_WA_HEADER = PROTOCOL_MODE === 'native'
+	? Buffer.from([87, 65, 77, DICT_VERSION]) // WAM\x05
+	: Buffer.from([87, 65, 6, DICT_VERSION])  // WA\x06\x03
+
+export { PROTOCOL_MODE }
 /** from: https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url */
 export const URL_REGEX = /https:\/\/(?![^:@\/\s]+:[^:@\/\s]+@)[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}(:\d+)?(\/[^\s]*)?/g
 
@@ -154,7 +171,20 @@ export const MEDIA_PATH_MAP: { [T in MediaType]?: string } = {
 	'md-msg-hist': '/mms/md-app-state',
 	'biz-cover-photo': '/pps/biz-cover-photo',
 	'sticker-pack': '/mms/sticker-pack',
-	'thumbnail-sticker-pack': '/mms/thumbnail-sticker-pack'
+	'thumbnail-sticker-pack': '/mms/thumbnail-sticker-pack',
+	// View-once types — same upload path as regular media (server CDN routing TBD)
+	'viewonce-image': '/mms/image',
+	'viewonce-video': '/mms/video',
+	'viewonce-audio': '/mms/audio'
+}
+
+export const NEWSLETTER_MEDIA_PATH_MAP: { [T in MediaType]?: string } = {
+	image: '/newsletter/newsletter-image',
+	video: '/newsletter/newsletter-video',
+	document: '/newsletter/newsletter-document',
+	audio: '/newsletter/newsletter-audio',
+	sticker: '/newsletter/newsletter-image',
+	'thumbnail-link': '/newsletter/newsletter-image'
 }
 
 export const MEDIA_HKDF_KEY_MAPPING = {
@@ -178,7 +208,11 @@ export const MEDIA_HKDF_KEY_MAPPING = {
 	ptv: 'Video',
 	'biz-cover-photo': 'Image',
 	'sticker-pack': 'Sticker Pack',
-	'thumbnail-sticker-pack': 'Sticker Pack Thumbnail'
+	'thumbnail-sticker-pack': 'Sticker Pack Thumbnail',
+	// View-once types — same HKDF keys as regular types (recipients decrypt with normal keys)
+	'viewonce-image': 'Image',
+	'viewonce-video': 'Video',
+	'viewonce-audio': 'Audio'
 }
 
 export type MediaType = keyof typeof MEDIA_HKDF_KEY_MAPPING
@@ -188,10 +222,12 @@ export const MEDIA_KEYS = Object.keys(MEDIA_PATH_MAP) as MediaType[]
 /** 120s timeout for history sync stall detection, same as WA Web's handleChunkProgress / restartPausedTimer (g = 120) */
 export const HISTORY_SYNC_PAUSED_TIMEOUT_MS = 120_000
 
-export const MIN_PREKEY_COUNT = 5
+// Replenishment threshold: when server count drops below this, top-up back to INITIAL_PREKEY_COUNT
+export const MIN_PREKEY_COUNT = 200
 
-// Moderate prekey count (upstream uses 812, reduced to balance rate limiting and availability)
-export const INITIAL_PREKEY_COUNT = 200
+// Initial pool size matching WA Business (CDP IDB capture: prekey-store = 812 on registration)
+// Rounded to 800 for cleanliness; replenishment always tops up to this value
+export const INITIAL_PREKEY_COUNT = 800
 
 export const UPLOAD_TIMEOUT = 30000 // 30 seconds
 // Moderate upload interval to balance rate limiting and responsiveness (was 5000)

src/Socket/chats.ts

@@ -54,7 +54,7 @@ import {
 	resolveLidToPn
 } from '../Utils'
 import { makeKeyedMutex, makeMutex } from '../Utils/make-mutex'
-import processMessage from '../Utils/process-message'
+import processMessage, { getChatId } from '../Utils/process-message'
 import { buildTcTokenFromJid } from '../Utils/tc-token-utils'
 import {
 	type BinaryNode,
@@ -98,6 +98,24 @@ export const makeChatsSocket = (config: SocketConfig) => {
 
 	let privacySettings: { [_: string]: string } | undefined
 
+	/**
+	 * Server-assigned AB props that gate tctoken-related protocol behavior.
+	 * Defaults match WA Web (safe — avoids spurious error 463 if the prop never
+	 * arrives). Populated from `fetchProps()` on connection.
+	 *
+	 * - `privacyTokenOn1to1` (AB prop 10518 / `privacy_token_sending_on_all_1_on_1_messages`):
+	 *    include tctoken in 1:1 messages.
+	 * - `profilePicPrivacyToken` (AB prop 9666 / `profile_scraping_privacy_token_in_photo_iq`):
+	 *    include tctoken in profile picture IQs.
+	 * - `lidTrustedTokenIssueToLid` (AB prop 14303 / `lid_trusted_token_issue_to_lid`):
+	 *    issue privacy tokens to the contact's LID instead of the PN.
+	 */
+	const serverProps = {
+		privacyTokenOn1to1: true,
+		profilePicPrivacyToken: true,
+		lidTrustedTokenIssueToLid: false
+	}
+
 	let syncState: SyncState = SyncState.Connecting
 
 	/** this mutex ensures that messages from the same chat are processed in order, while allowing parallel processing of messages from different chats */
@@ -112,6 +130,18 @@ export const makeChatsSocket = (config: SocketConfig) => {
 	/** this mutex ensures that notifications from the same chat are processed in order, while allowing parallel processing across chats */
 	const notificationMutex = makeKeyedMutex()
 
+	/**
+	 * Per-chat mutex dedicated to post-upsert work (history app-state sync +
+	 * processMessage side effects). Kept separate from `messageMutex` because
+	 * the inbound caller already holds `messageMutex(chatId)` while running
+	 * decrypt + upsertMessage; sharing the same mutex would let a concurrently-
+	 * arrived message N+1 enqueue *between* msg N's outer callback and msg N's
+	 * post-upsert task, so msg N+1's processMessage could run before msg N's
+	 * (breaking per-chat ordering of side effects). With a separate mutex,
+	 * post-upsert tasks enqueue strictly in upsertMessage call order.
+	 */
+	const postUpsertMutex = makeKeyedMutex()
+
 	// Timeout for AwaitingInitialSync state
 	let awaitingSyncTimeout: NodeJS.Timeout | undefined
 
@@ -791,7 +821,10 @@ export const makeChatsSocket = (config: SocketConfig) => {
 			me && (normalizedJid === jidNormalizedUser(me.id) || (me.lid && normalizedJid === jidNormalizedUser(me.lid)))
 		let content: BinaryNode[] | undefined = baseContent
 
-		if (isUserJid && !isSelf) {
+		// Gate inclusion on AB prop 9666 (profile_scraping_privacy_token_in_photo_iq).
+		// WA Web defaults to true; if the server flips it off, we mirror that to
+		// avoid divergence with the spec-compliant client.
+		if (serverProps.profilePicPrivacyToken && isUserJid && !isSelf) {
 			content = await buildTcTokenFromJid({
 				authState,
 				jid: normalizedJid,
@@ -1060,22 +1093,21 @@ export const makeChatsSocket = (config: SocketConfig) => {
 		}
 	}
 
-	/** sending non-abt props may fix QR scan fail if server expects */
+	/** fetch AB props */
 	const fetchProps = async () => {
-		//TODO: implement both protocol 1 and protocol 2 prop fetching, specially for abKey for WM
 		const resultNode = await query({
 			tag: 'iq',
 			attrs: {
 				to: S_WHATSAPP_NET,
-				xmlns: 'w',
+				xmlns: 'abt',
 				type: 'get'
 			},
 			content: [
 				{
 					tag: 'props',
 					attrs: {
-						protocol: '2',
-						hash: authState?.creds?.lastPropHash || ''
+						protocol: '1',
+						...(authState?.creds?.lastPropHash ? { hash: authState.creds.lastPropHash } : {})
 					}
 				}
 			]
@@ -1094,7 +1126,25 @@ export const makeChatsSocket = (config: SocketConfig) => {
 			props = reduceBinaryNodeToDictionary(propsNode, 'prop')
 		}
 
-		logger.debug('fetched props')
+		// Extract protocol-relevant AB props (defaults match WA Web; see serverProps doc).
+		// We accept both numeric IDs and human-readable names so the parser is resilient
+		// to upstream renaming and to future-versioned WA Web servers.
+		const privacyTokenProp = props['10518'] ?? props['privacy_token_sending_on_all_1_on_1_messages']
+		if (privacyTokenProp !== undefined) {
+			serverProps.privacyTokenOn1to1 = privacyTokenProp === 'true' || privacyTokenProp === '1'
+		}
+
+		const profilePicProp = props['9666'] ?? props['profile_scraping_privacy_token_in_photo_iq']
+		if (profilePicProp !== undefined) {
+			serverProps.profilePicPrivacyToken = profilePicProp === 'true' || profilePicProp === '1'
+		}
+
+		const lidIssueProp = props['14303'] ?? props['lid_trusted_token_issue_to_lid']
+		if (lidIssueProp !== undefined) {
+			serverProps.lidTrustedTokenIssueToLid = lidIssueProp === 'true' || lidIssueProp === '1'
+		}
+
+		logger.debug({ serverProps }, 'fetched props')
 
 		return props
 	}
@@ -1361,7 +1411,19 @@ export const makeChatsSocket = (config: SocketConfig) => {
 				blockedCollections.clear()
 
 				logger.info('Doing app state sync')
-				await resyncAppState(ALL_WA_PATCH_NAMES, true)
+				try {
+					await resyncAppState(ALL_WA_PATCH_NAMES, true)
+				} catch (err) {
+					// Failure recovery: without this, syncState would stay at Syncing
+					// and ev.flush() would never run, leaving the event buffer pinned
+					// until the buffer's own safety timeout expires. Force the state
+					// machine forward so live inbound events can flow even if the
+					// app-state resync failed (collections are already cleared, so
+					// blocked patches will be retried on the next creds.update tick).
+					syncState = SyncState.Online
+					ev.flush()
+					throw err
+				}
 
 				// Sync is complete, go online and flush everything
 				syncState = SyncState.Online
@@ -1373,29 +1435,131 @@ export const makeChatsSocket = (config: SocketConfig) => {
 			}
 		}
 
-		await Promise.all([
-			(async () => {
-				if (shouldProcessHistoryMsg) {
-					await doAppStateSync()
-				}
-			})(),
-			processMessage(msg, {
-				signalRepository,
-				shouldProcessHistoryMsg,
-				placeholderResendCache,
-				ev,
-				creds: authState.creds,
-				keyStore: authState.keys,
-				logger,
-				options: config.options,
-				getMessage
-			})
-		])
+		// Post-upsert work: history app-state sync + processMessage side effects.
+		// Awaiting here keeps `messages.upsert` pinned in the event buffer
+		// (createBufferedFunction only schedules flush after work() resolves), so
+		// the hot path detaches this work to release the emit on the next debounce
+		// tick.
+		//
+		// Use Promise.allSettled so the combined promise only settles after BOTH
+		// tasks finish. With a plain Promise.all, an early rejection from one task
+		// would release the keyed mutex while the other task is still mutating
+		// chat state — letting the next message of the same chat overtake it and
+		// break per-chat ordering.
+		//
+		// Returns the per-task settle status so the keyShare branch can know
+		// whether processMessage actually persisted the new app-state-sync key
+		// before triggering doAppStateSync (otherwise the sync would hit
+		// isMissingKeyError and park collections in blockedCollections).
+		const postUpsertTasks = async (): Promise<{ processMessageOk: boolean }> => {
+			const [historyResult, processResult] = await Promise.allSettled([
+				shouldProcessHistoryMsg ? doAppStateSync() : Promise.resolve(),
+				processMessage(msg, {
+					signalRepository,
+					shouldProcessHistoryMsg,
+					placeholderResendCache,
+					ev,
+					creds: authState.creds,
+					keyStore: authState.keys,
+					logger,
+					options: config.options,
+					getMessage
+				})
+			])
 
-		// If the app state key arrives and we are waiting to sync, trigger the sync now.
-		if (msg.message?.protocolMessage?.appStateSyncKeyShare && syncState === SyncState.Syncing) {
-			logger.info('App state sync key arrived, triggering app state sync')
-			await doAppStateSync()
+			if (historyResult.status === 'rejected') {
+				logger?.warn(
+					{ err: historyResult.reason, messageId: msg.key?.id, remoteJid: msg.key?.remoteJid },
+					'history doAppStateSync failed'
+				)
+			}
+
+			if (processResult.status === 'rejected') {
+				logger?.warn(
+					{ err: processResult.reason, messageId: msg.key?.id, remoteJid: msg.key?.remoteJid },
+					'processMessage failed'
+				)
+			}
+
+			return { processMessageOk: processResult.status === 'fulfilled' }
+		}
+
+		// Use getChatId + jidNormalizedUser so the mutex key matches the chat-id
+		// scheme processMessage uses for chat updates (broadcasts target the
+		// participant). When getChatId/jidNormalizedUser yields nothing usable
+		// (missing or malformed JID), prefer a message-derived fallback over a
+		// single global 'unknown' bucket — that bucket would head-of-line block
+		// every malformed message behind a shared queue. msg.key.id is unique
+		// per message so unrelated malformed inputs no longer serialize together;
+		// for valid messages we still hit the normalized chat-id path, so the
+		// per-chat ordering guarantee is unchanged where it matters.
+		const rawChatId = getChatId(msg.key)
+		const normalizedChatId = rawChatId ? jidNormalizedUser(rawChatId) : ''
+		const postUpsertChatId = normalizedChatId || msg.key?.id || 'unknown'
+
+		// Wrap in `postUpsertMutex(chatId)` (a SEPARATE keyed mutex from the outer
+		// `messageMutex` held by the inbound caller) so per-chat ordering of
+		// processMessage side effects (chat.unreadCount, LID/PN mapping,
+		// messages.update, history downloads) is preserved across messages of the
+		// same chat.
+		//
+		// Why a separate mutex: if we re-used messageMutex, a concurrently-arrived
+		// message N+1 could enqueue on the outer mutex BEFORE msg N's post-upsert
+		// task gets enqueued (because N's outer callback yields on `await decrypt()`
+		// before reaching the inner enqueue site). The queue would then be
+		// [OuterN+1, InnerN, ...], so InnerN+1 would beat InnerN to processMessage.
+		// With its own mutex, post-upsert tasks enqueue strictly in upsertMessage
+		// call order (which IS message arrival order because the outer
+		// messageMutex serializes the upserts per-chat).
+		const postUpsertWork = postUpsertMutex.mutex(postUpsertChatId, postUpsertTasks)
+
+		const isKeyShareDuringSync =
+			!!msg.message?.protocolMessage?.appStateSyncKeyShare && syncState === SyncState.Syncing
+
+		if (isKeyShareDuringSync) {
+			// appStateSyncKeyShare path: processMessage persists the new app-state-sync
+			// key in its APP_STATE_SYNC_KEY_SHARE handler (via keyStore.transaction).
+			// The follow-up doAppStateSync() needs that key to decrypt patches, so
+			// we MUST wait for processMessage to actually succeed before kicking off
+			// the sync — otherwise it would hit isMissingKeyError and park
+			// collections in blockedCollections, regressing the very issue this
+			// branch was added to fix.
+			//
+			// No deadlock with the inbound caller's messageMutex because
+			// postUpsertMutex is a different mutex instance.
+			logger.info('App state sync key arrived, awaiting persistence before triggering sync')
+			const { processMessageOk } = await postUpsertWork
+
+			if (!processMessageOk) {
+				logger?.warn(
+					{ messageId: msg.key?.id, remoteJid: msg.key?.remoteJid },
+					'processMessage failed during key-share — skipping doAppStateSync to avoid isMissingKeyError'
+				)
+			} else {
+				try {
+					await doAppStateSync()
+				} catch (err) {
+					logger?.warn(
+						{ err, messageId: msg.key?.id, remoteJid: msg.key?.remoteJid },
+						'doAppStateSync failed after key-share persistence'
+					)
+				}
+			}
+		} else {
+			// `postUpsertWork` is not expected to reject — `Promise.allSettled`
+			// inside `postUpsertTasks` never rejects, and per-task failures are
+			// already logged inline. The defensive catch routes any truly
+			// unexpected rejection (e.g. `postUpsertMutex` internal corruption,
+			// future synchronous throws inside processMessage) through
+			// `onUnexpectedError` instead of letting it surface as an
+			// UnhandledPromiseRejection — which on Node ≥15 can terminate the
+			// long-running socket process.
+			postUpsertWork.catch(err =>
+				onUnexpectedError(
+					err,
+					`processing post-upsert work for message ${msg.key?.id || 'unknown'} on ${msg.key?.remoteJid || 'unknown chat'}`
+				)
+			)
 		}
 	})
 
@@ -1612,6 +1776,7 @@ export const makeChatsSocket = (config: SocketConfig) => {
 
 	return {
 		...sock,
+		serverProps,
 		createCallLink,
 		getBotListV2,
 		messageMutex,

src/Socket/groups.ts

@@ -343,11 +343,13 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 	let descId: string | undefined
 	let descOwner: string | undefined
 	let descOwnerPn: string | undefined
+	let descOwnerUsername: string | undefined
 	let descTime: number | undefined
 	if (descChild) {
 		desc = getBinaryNodeChildString(descChild, 'body')
 		descOwner = descChild.attrs.participant ? jidNormalizedUser(descChild.attrs.participant) : undefined
 		descOwnerPn = descChild.attrs.participant_pn ? jidNormalizedUser(descChild.attrs.participant_pn) : undefined
+		descOwnerUsername = descChild.attrs.participant_username || undefined
 		descTime = +descChild.attrs.t!
 		descId = descChild.attrs.id
 	}
@@ -362,16 +364,19 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 		subject: group.attrs.subject!,
 		subjectOwner: group.attrs.s_o,
 		subjectOwnerPn: group.attrs.s_o_pn,
+		subjectOwnerUsername: group.attrs.s_o_username,
 		subjectTime: +(group.attrs.s_t ?? '0'),
 		size: group.attrs.size ? +group.attrs.size : getBinaryNodeChildren(group, 'participant').length,
 		creation: +(group.attrs.creation ?? '0'),
 		owner: group.attrs.creator ? jidNormalizedUser(group.attrs.creator) : undefined,
 		ownerPn: group.attrs.creator_pn ? jidNormalizedUser(group.attrs.creator_pn) : undefined,
+		ownerUsername: group.attrs.creator_username || undefined,
 		owner_country_code: group.attrs.creator_country_code,
 		desc,
 		descId,
 		descOwner,
 		descOwnerPn,
+		descOwnerUsername,
 		descTime,
 		linkedParent: getBinaryNodeChild(group, 'linked_parent')?.attrs.jid || undefined,
 		restrict: !!getBinaryNodeChild(group, 'locked'),
@@ -386,6 +391,7 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 				id: attrs.jid!,
 				phoneNumber: isLidUser(attrs.jid) && isPnUser(attrs.phone_number) ? attrs.phone_number : undefined,
 				lid: isPnUser(attrs.jid) && isLidUser(attrs.lid) ? attrs.lid : undefined,
+				username: attrs.participant_username || attrs.username || undefined,
 				admin: (attrs.type || null) as GroupParticipant['admin']
 			}
 		}),

src/Socket/messages-recv.ts

@@ -7,6 +7,7 @@ import { proto } from '../../WAProto/index.js'
 import {
 	DEFAULT_CACHE_TTLS,
 	DEFAULT_SESSION_CLEANUP_CONFIG,
+	INITIAL_PREKEY_COUNT,
 	KEY_BUNDLE_TYPE,
 	MIN_PREKEY_COUNT,
 	PLACEHOLDER_MAX_AGE_SECONDS,
@@ -48,9 +49,12 @@ import {
 	getStatusFromReceiptType,
 	handleIdentityChange,
 	hkdf,
+	BAD_MAC_ERROR_TEXT,
+	DECRYPTION_RETRY_CONFIG,
 	MISSING_KEYS_ERROR_TEXT,
 	NACK_REASONS,
 	NO_MESSAGE_FOUND_ERROR_TEXT,
+	RetryReason,
 	normalizeKeyLidToPn,
 	normalizeMessageJids,
 	resolveLidToPn,
@@ -69,7 +73,14 @@ import {
 	recordMessageReceived,
 	recordMessageRetry
 } from '../Utils/prometheus-metrics.js'
-import { isTcTokenExpired, resolveTcTokenJid, storeTcTokensFromIqResult } from '../Utils/tc-token-utils'
+import {
+	buildMergedTcTokenIndexWrite,
+	isTcTokenExpired,
+	resolveIssuanceJid,
+	resolveTcTokenJid,
+	storeTcTokensFromIqResult,
+	TC_TOKEN_INDEX_KEY
+} from '../Utils/tc-token-utils'
 import {
 	areJidsSameUser,
 	type BinaryNode,
@@ -160,7 +171,12 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 	let sendActiveReceipts = false
 
 	// ======= tctoken index tracking for cross-session pruning =======
-	const TC_TOKEN_INDEX_KEY = '__index'
+	// TC_TOKEN_INDEX_KEY is imported from tc-token-utils so the value stays in sync
+	// with messages-send/process-message writes (avoids string drift on rename).
+	// Race note: this prune-driven index write may interleave with
+	// buildMergedTcTokenIndexWrite calls from issuance/history-sync paths. Worst
+	// case: a JID resurrected by a stale read gets pruned again on the next 24h
+	// sweep — no data loss, just one extra cycle.
 	const TC_TOKEN_PRUNE_TS_KEY = '__prune_ts'
 	const tcTokenKnownJids = new Set<string>()
 	const tcTokenRetriedMsgIds = new Set<string>()
@@ -194,16 +210,25 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		}
 	})()
 
-	/** Debounced save of the tctoken JID index (5s) */
+	/**
+	 * Debounced save of the tctoken JID index (5s).
+	 *
+	 * Merges with the persisted index instead of overwriting — other layers
+	 * (messages-send fire-and-forget issuance, process-message history sync) may
+	 * write JIDs to the index via `buildMergedTcTokenIndexWrite` without updating
+	 * `tcTokenKnownJids`. Without the merge those JIDs would be silently dropped
+	 * the next time this debounced save fires.
+	 */
 	const scheduleTcTokenIndexSave = () => {
 		if (tcTokenIndexSaveTimer) clearTimeout(tcTokenIndexSaveTimer)
 		tcTokenIndexSaveTimer = setTimeout(async () => {
 			try {
-				const arr = Array.from(tcTokenKnownJids)
+				const merged = await buildMergedTcTokenIndexWrite(authState.keys, tcTokenKnownJids)
 				await authState.keys.set({
 					tctoken: {
+						...merged,
 						[TC_TOKEN_INDEX_KEY]: {
-							token: Buffer.from(JSON.stringify(arr), 'utf8'),
+							...merged[TC_TOKEN_INDEX_KEY],
 							timestamp: unixTimestampSeconds().toString()
 						}
 					}
@@ -1212,7 +1237,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		return await query(stanza)
 	}
 
-	const sendRetryRequest = async (node: BinaryNode, forceIncludeKeys = false) => {
+	const sendRetryRequest = async (node: BinaryNode, forceIncludeKeys = false, decryptionError?: string) => {
 		const { fullMessage } = decodeMessageNode(node, authState.creds.me!.id, authState.creds.me!.lid || '')
 		const { key: msgKey } = fullMessage
 		const msgId = msgKey.id!
@@ -1310,39 +1335,39 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		const { account, signedPreKey, signedIdentityKey: identityKey } = authState.creds
 		const fromJid = node.attrs.from!
 
-		// Check if we should recreate the session
-		let shouldRecreateSession = false
-		let recreateReason = ''
-
-		if (enableAutoSessionRecreation && messageRetryManager && retryCount >= 1) {
-			try {
-				// Check if we have a session with this JID
-				const sessionId = signalRepository.jidToSignalProtocolAddress(fromJid)
-				const hasSession = await signalRepository.validateSession(fromJid)
-
-				// Extract error code from retry node if present (for MAC error detection)
-				const retryNode = getBinaryNodeChild(node, 'retry')
-				const errorAttr = retryNode?.attrs?.error
-				const errorCode = messageRetryManager.parseRetryErrorCode(errorAttr)
-
-				const result = messageRetryManager.shouldRecreateSession(fromJid, hasSession.exists, errorCode)
-				shouldRecreateSession = result.recreate
-				recreateReason = result.reason
-
-				if (shouldRecreateSession) {
-					logger.debug({ fromJid, retryCount, reason: recreateReason, errorCode }, 'recreating session for retry')
-					// Delete existing session to force recreation
-					// CRITICAL: Use same transaction key as encrypt/decrypt operations to prevent race
-					// Using meId ensures this delete serializes with sendMessage() and other session operations
-					await authState.keys.transaction(async () => {
-						await authState.keys.set({ session: { [sessionId]: null } })
-					}, authState.creds.me?.id || 'session-operation')
-					forceIncludeKeys = true
-				}
-			} catch (error) {
-				logger.warn({ error, fromJid }, 'failed to check session recreation')
-			}
-		}
+		// Derive the Signal error code from the actual decryption failure message.
+		// Sent in the retry receipt so the peer (even another InfiniteAPI instance)
+		// knows the exact failure type and can recreate the session immediately
+		// instead of falling back to the 1-hour timeout.
+		//
+		// Codes mirror RetryReason enum in message-retry-manager.ts:
+		//   0 = UnknownError | 1 = NoSession  | 2 = InvalidKey
+		//   3 = InvalidKeyId | 4 = InvalidMessage | 7 = BadMac
+		//
+		// Uses DECRYPTION_RETRY_CONFIG error lists (single source of truth in
+		// decode-wa-message.ts) so additions to those lists are picked up here
+		// automatically.
+		//
+		// NOTE: We do NOT delete the session here (receiver side). The Signal Protocol
+		// recovers automatically when the sender's pkmsg arrives — it overwrites the
+		// corrupted session. Deleting prematurely creates a race window where no session
+		// exists, which can cause "No Session" errors on concurrent messages.
+		const retryErrorCode = (() => {
+			if (!decryptionError) return RetryReason.UnknownError
+			// Bad MAC must be checked first — it is also in corruptedSessionErrors
+			// but warrants the more specific code 7 over the generic code 4.
+			if (decryptionError.includes(BAD_MAC_ERROR_TEXT)) return RetryReason.SignalErrorBadMac
+			// MessageCounterError and other corrupted-session variants
+			if (DECRYPTION_RETRY_CONFIG.corruptedSessionErrors.some(e => decryptionError.includes(e))) return RetryReason.SignalErrorInvalidMessage
+			// Missing / invalid session record
+			if (DECRYPTION_RETRY_CONFIG.sessionRecordErrors.some(e => decryptionError.includes(e)) ||
+				/no\s+(open\s+)?sessions?/i.test(decryptionError)) return RetryReason.SignalErrorNoSession
+			// PreKey / key-id errors
+			if (/pre\s*key/i.test(decryptionError)) return RetryReason.SignalErrorInvalidKeyId
+			// Identity / key errors
+			if (/invalid\s*key|untrusted\s*identity/i.test(decryptionError)) return RetryReason.SignalErrorInvalidKey
+			return RetryReason.UnknownError
+		})()
 
 		if (retryCount <= 2) {
 			// Use new retry manager for phone requests if available
@@ -1383,8 +1408,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 							id: node.attrs.id!,
 							t: node.attrs.t!,
 							v: '1',
-							// ADD ERROR FIELD
-							error: '0'
+							error: retryErrorCode.toString()
 						}
 					},
 					{
@@ -1403,7 +1427,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 				receipt.attrs.participant = node.attrs.participant
 			}
 
-			if (retryCount > 1 || forceIncludeKeys || shouldRecreateSession) {
+			if (retryCount > 1 || forceIncludeKeys) {
 				const { update, preKeys } = await getNextPreKeys(authState, 1)
 
 				const [keyId] = Object.keys(preKeys)
@@ -1431,6 +1455,58 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		}, authState?.creds?.me?.id || 'sendRetryRequest')
 	}
 
+	/**
+	 * Fire-and-forget tctoken re-issuance after a peer's device identity changed.
+	 * Mirrors WAWebSendTcTokenWhenDeviceIdentityChange — runs in PARALLEL with the
+	 * session refresh (not after it).
+	 *
+	 * Why parallel and not sequential:
+	 *  - WA Web invokes this BEFORE assertSessions to maximise the chance the contact
+	 *    has a fresh tctoken by the time the next outbound send executes.
+	 *  - Running after assertSessions (the fork's previous behaviour) races with the
+	 *    next send and risks error 463 when the contact reinstalls and the user replies
+	 *    immediately afterwards.
+	 *
+	 * Gated on `entry.senderTimestamp` (we previously issued a token to this peer in the
+	 * current bucket window). Preserves the existing senderTimestamp instead of issuing
+	 * a fresh one — keeps WA Web's bucket coalescing semantics: same token, same window.
+	 */
+	const reissueTcTokenAfterIdentityChange = (from: string): void => {
+		void (async () => {
+			const normalizedJid = jidNormalizedUser(from)
+			const tcJid = await resolveTcTokenJid(normalizedJid, getLIDForPN)
+			const tcTokenData = await authState.keys.get('tctoken', [tcJid])
+			const senderTs = tcTokenData?.[tcJid]?.senderTimestamp
+
+			if (senderTs === null || senderTs === undefined || isTcTokenExpired(senderTs)) {
+				return
+			}
+
+			logTcToken('reissue', { jid: normalizedJid, reason: 'identity_changed', senderTimestamp: senderTs })
+			const getPNForLID = signalRepository.lidMapping.getPNForLID.bind(signalRepository.lidMapping)
+			const issueJid = await resolveIssuanceJid(
+				normalizedJid,
+				sock.serverProps.lidTrustedTokenIssueToLid,
+				getLIDForPN,
+				getPNForLID
+			)
+			const result = await getPrivacyTokens([issueJid], senderTs)
+			await storeTcTokensFromIqResult({
+				result,
+				fallbackJid: tcJid,
+				keys: authState.keys,
+				getLIDForPN,
+				onNewJidStored: storedJid => {
+					tcTokenKnownJids.add(storedJid)
+					scheduleTcTokenIndexSave()
+				}
+			})
+			logTcToken('reissue_ok', { jid: normalizedJid, reason: 'identity_changed' })
+		})().catch(err => {
+			logTcToken('reissue_fail', { jid: from, error: err?.message })
+		})
+	}
+
 	const handleEncryptNotification = async (node: BinaryNode) => {
 		const from = node.attrs.from
 		if (from === S_WHATSAPP_NET) {
@@ -1440,7 +1516,8 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 
 			logger.debug({ count, shouldUploadMorePreKeys }, 'recv pre-key count')
 			if (shouldUploadMorePreKeys) {
-				await uploadPreKeys()
+				// Top-up back to INITIAL_PREKEY_COUNT so the pool is always restored to full size
+				await uploadPreKeys(Math.max(1, INITIAL_PREKEY_COUNT - count))
 			}
 		} else {
 			const result = await handleIdentityChange(node, {
@@ -1449,57 +1526,12 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 				validateSession: signalRepository.validateSession,
 				assertSessions,
 				debounceCache: identityAssertDebounce,
-				logger
+				logger,
+				// Fire reissue in parallel with the session refresh, NOT after it.
+				// See reissueTcTokenAfterIdentityChange doc for the rationale.
+				onBeforeSessionRefresh: reissueTcTokenAfterIdentityChange
 			})
 
-			// When a session is refreshed (identity change), re-issue tctoken fire-and-forget
-			// WABA Android: reissue stores senderTimestamp + realIssueTimestamp after IQ success
-			if (result.action === 'session_refreshed') {
-				const normalizedJid = jidNormalizedUser(from)
-				resolveTcTokenJid(normalizedJid, getLIDForPN)
-					.then(async tcJid => {
-						const tcData = await authState.keys.get('tctoken', [tcJid])
-						const entry = tcData[tcJid]
-						if (entry?.token?.length && !isTcTokenExpired(entry.timestamp)) {
-							const senderTs = unixTimestampSeconds()
-							logTcToken('reissue', { jid: normalizedJid, reason: 'session_refreshed' })
-							getPrivacyTokens([normalizedJid], senderTs)
-								.then(async (iqResult) => {
-									await storeTcTokensFromIqResult({
-										result: iqResult,
-										fallbackJid: normalizedJid,
-										keys: authState.keys,
-										getLIDForPN,
-										onNewJidStored: (storedJid) => {
-											tcTokenKnownJids.add(storedJid)
-											scheduleTcTokenIndexSave()
-										}
-									})
-									// Persist senderTimestamp + realIssueTimestamp after IQ success
-									const currentData = await authState.keys.get('tctoken', [tcJid])
-									const currentEntry = currentData[tcJid]
-									await authState.keys.set({
-										tctoken: {
-											[tcJid]: {
-												...currentEntry,
-												token: currentEntry?.token ?? Buffer.alloc(0),
-												senderTimestamp: senderTs,
-												realIssueTimestamp: 0
-											}
-										}
-									})
-									logTcToken('reissue_ok', { jid: normalizedJid, reason: 'session_refreshed' })
-								})
-								.catch(err => {
-									logTcToken('reissue_fail', { jid: normalizedJid, error: err?.message })
-								})
-						}
-					})
-					.catch(() => {
-						/* ignore resolution errors */
-					})
-			}
-
 			if (result.action === 'no_identity_node') {
 				logger.info({ node }, 'unknown encrypt notification')
 			}
@@ -2120,12 +2152,6 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		if (resolvedRemoteJid) key.remoteJid = resolvedRemoteJid
 		if (resolvedParticipant) key.participant = resolvedParticipant
 
-		if (shouldIgnoreJid(remoteJid!) && remoteJid !== S_WHATSAPP_NET) {
-			logger.trace({ remoteJid }, 'ignoring receipt from jid')
-			await sendMessageAck(node)
-			return
-		}
-
 		const ids = [attrs.id!]
 		if (Array.isArray(content)) {
 			const items = getBinaryNodeChildren(content[0], 'item')
@@ -2201,11 +2227,6 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 
 	const handleNotification = async (node: BinaryNode) => {
 		const remoteJid = node.attrs.from
-		if (shouldIgnoreJid(remoteJid!) && remoteJid !== S_WHATSAPP_NET) {
-			logger.trace({ remoteJid }, 'ignored notification')
-			await sendMessageAck(node)
-			return
-		}
 
 		try {
 			await Promise.all([
@@ -2219,6 +2240,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 							fromMe,
 							participant: node.attrs.participant,
 							participantAlt,
+							participantUsername: node.attrs.participant_username,
 							addressingMode,
 							id: node.attrs.id,
 							...(msg.key || {})
@@ -2227,6 +2249,10 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 						msg.messageTimestamp = +node.attrs.t!
 
 						const fullMsg = proto.WebMessageInfo.fromObject(msg) as WAMessage
+						// Preserve custom WAMessageKey fields (participantAlt, participantUsername,
+						// addressingMode) that proto.WebMessageInfo.fromObject strips because
+						// they aren't part of the proto.MessageKey schema.
+						fullMsg.key = msg.key
 						await upsertMessage(fullMsg, 'append')
 					}
 				})
@@ -2237,20 +2263,56 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 	}
 
 	const handleMessage = async (node: BinaryNode) => {
-		if (shouldIgnoreJid(node.attrs.from!) && node.attrs.from !== S_WHATSAPP_NET) {
-			logger.trace({ from: node.attrs.from }, 'ignored message')
-			// Send a clean ACK (no error code) so the server considers the
-			// message delivered. Using error 500 (UnhandledError) previously
-			// caused the server to retry delivery, generating duplicate traffic.
-			await sendMessageAck(node)
-			return
-		}
-
 		const encNode = getBinaryNodeChild(node, 'enc')
-		// TODO: temporary fix for crashes and issues resulting of failed msmsg decryption
-		if (encNode?.attrs.type === 'msmsg') {
-			logger.debug({ key: node.attrs.key }, 'ignored msmsg')
-			await sendMessageAck(node, NACK_REASONS.MissingMessageSecret)
+		const unavailableNode = getBinaryNodeChild(node, 'unavailable')
+
+		// msmsg block removed — allow msmsg decryption (required for view-once on linked devices)
+		if (unavailableNode?.attrs?.type === 'view_once') {
+			const { fullMessage: voMsg } = decryptMessageNode(
+				node,
+				authState.creds.me!.id,
+				authState.creds.me!.lid || '',
+				signalRepository,
+				logger,
+			)
+			voMsg.key.isViewOnce = true
+
+			// Try to request the actual view-once content from the primary phone via PDO
+			// The phone may resend the full media (url, mediaKey, directPath, etc.)
+			console.log(`[VO_PDO] Requesting view-once content via PDO for ${voMsg.key.id} from ${voMsg.key.remoteJid}`)
+			try {
+				const requestId = await requestPlaceholderResend(voMsg.key, {
+					key: { ...voMsg.key },
+					pushName: voMsg.pushName,
+					messageTimestamp: voMsg.messageTimestamp,
+					participant: voMsg.key.participant,
+					participantAlt: voMsg.key.participantAlt
+				})
+				if (requestId && requestId !== 'RESOLVED') {
+					console.log(`[VO_PDO] PDO request sent! requestId=${requestId} — waiting for phone to resend`)
+				} else if (requestId === 'RESOLVED') {
+					console.log(`[VO_PDO] Message arrived during PDO delay!`)
+				} else {
+					console.log(`[VO_PDO] Already requested or no response`)
+				}
+			} catch (err: any) {
+				console.log(`[VO_PDO] PDO request failed: ${err.message} — falling back to placeholder`)
+			}
+
+			// Emit placeholder immediately so consumers see the notification
+			// If PDO succeeds, the real message will arrive via messages.upsert later
+			voMsg.message = {
+				viewOnceMessage: {
+					message: {
+						imageMessage: {
+							viewOnce: true,
+						}
+					}
+				}
+			}
+			const upsertType = node.attrs.offline ? 'append' : 'notify'
+			await upsertMessage(voMsg, upsertType)
+			await sendMessageAck(node)
 			return
 		}
 
@@ -2268,44 +2330,54 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		)
 
 		const alt = msg.key.participantAlt || msg.key.remoteJidAlt
-		// Handle LID/PN mappings with hybrid approach:
-		// - Store mapping operation runs in background (non-critical for decrypt)
-		// - Session migration MUST complete before decrypt() to avoid "No session record" errors
-		// This addresses Codex/Copilot review concerns about race conditions with decrypt()
+		// Handle LID/PN mappings with optimized hot-path:
+		// - storeLIDPNMappings is fire-and-forget (background) — does NOT block decrypt
+		// - migrateSession is SYNC (await) — REQUIRED for decrypt to find session
+		//
+		// SAFETY: normalizeMessageJids has a fast-path that uses key.*Alt directly without
+		// hitting the store, so the just-arrived message normalizes correctly even before
+		// the background store completes. Subsequent messages in the same chat hit the
+		// store after the background write is done (ms later).
+		//
+		// Pre-check (getPNForLID/getLIDForPN) was removed — storeLIDPNMappings has internal
+		// LRU cache + dedup, the pre-check was a redundant store round-trip per inbound
+		// message that added latency under load.
+		//
+		// HISTORICAL: this restores the intent of d73cd28d39 (2026-02-03) which was
+		// partially reverted by c3fc792351 the same day due to a race-condition concern
+		// with migrateSession (kept sync here). storeLIDPNMappings was over-protected:
+		// it persists a mapping that downstream consumers can re-derive from key.*Alt,
+		// while migrateSession actually moves the Signal session record that decrypt()
+		// will load microseconds later — those two have very different criticality.
+		//
+		// DO NOT make migrateSession async — decrypt() depends on the session being at
+		// the correct identifier (LID vs PN) when it runs. Other code paths (USync
+		// device lookup in messages-send.ts) create LID/PN mappings without migrating
+		// the session, so we cannot skip migration even when the mapping already exists.
 		if (!!alt) {
 			const altServer = jidDecode(alt)?.server
 			const primaryJid = msg.key.participant || msg.key.remoteJid!
 
 			if (altServer === 'lid') {
-				// Check if mapping already exists to avoid unnecessary storage operations
-				const existingMapping = await signalRepository.lidMapping.getPNForLID(alt)
-				if (!existingMapping) {
-					// MUST await: normalizeMessageJids() runs after this and needs the mapping
-					// in the LIDMappingStore to resolve LID→PN for events delivered to consumers
-					await signalRepository.lidMapping
-						.storeLIDPNMappings([{ lid: alt, pn: primaryJid }])
-						.catch(error => logger.warn({ error, alt, primaryJid }, 'LID mapping storage failed'))
-				}
+				// Fire-and-forget: storeLIDPNMappings has internal cache+dedup,
+				// pre-check (getPNForLID) was redundant.
+				signalRepository.lidMapping
+					.storeLIDPNMappings([{ lid: alt, pn: primaryJid }])
+					.catch(error => logger.warn({ error, alt, primaryJid }, 'background LID mapping store failed'))
 
-				// CRITICAL: ALWAYS migrate session, even if mapping exists
-				// Other code paths (e.g., USync device lookup in messages-send.ts:310-319)
-				// may create mappings via storeLIDPNMappings() without calling migrateSession()
-				// This leaves sessions under PN format while decrypt() expects LID format
-				// Skipping migration based on mapping existence causes "No session record" errors
+				// CRITICAL: ALWAYS migrate session SYNC, even if mapping exists.
+				// Other code paths (e.g., USync device lookup in messages-send.ts) may create
+				// mappings via storeLIDPNMappings() without calling migrateSession(). This
+				// leaves sessions under PN format while decrypt() expects LID format.
+				// Skipping migration based on mapping existence causes "No session record" errors.
 				await signalRepository.migrateSession(primaryJid, alt)
 			} else {
-				// Check if reverse mapping exists
-				const existingMapping = await signalRepository.lidMapping.getLIDForPN(alt)
-				if (!existingMapping) {
-					// MUST await: normalizeMessageJids() runs after this and needs the mapping
-					// in the LIDMappingStore to resolve LID→PN for events delivered to consumers
-					await signalRepository.lidMapping
-						.storeLIDPNMappings([{ lid: primaryJid, pn: alt }])
-						.catch(error => logger.warn({ error, alt, primaryJid }, 'LID mapping storage failed'))
-				}
+				// Fire-and-forget: same rationale as above.
+				signalRepository.lidMapping
+					.storeLIDPNMappings([{ lid: primaryJid, pn: alt }])
+					.catch(error => logger.warn({ error, alt, primaryJid }, 'background LID mapping store failed'))
 
-				// CRITICAL: ALWAYS migrate session, even if mapping exists
-				// Same reasoning as above - mapping existence doesn't guarantee session migration
+				// CRITICAL: ALWAYS migrate session SYNC.
 				await signalRepository.migrateSession(alt, primaryJid)
 			}
 		}
@@ -2367,6 +2439,23 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 								{ msgId: msg.key?.id, messageType },
 								'CTWA: Skipping placeholder resend for unavailable fanout type'
 							)
+							// For view-once: emit the message with a viewOnceMessage placeholder
+							// so consumers (zpro, etc.) can detect and display it.
+							// Include a message wrapper so isValidMsg accepts it.
+							if (messageType === 'view_once_unavailable_fanout') {
+								msg.key.isViewOnce = true
+								msg.message = {
+									viewOnceMessage: {
+										message: {
+											imageMessage: {
+												viewOnce: true,
+											}
+										}
+									}
+								}
+								const upsertType = node.attrs.offline ? 'append' : 'notify'
+								await upsertMessage(msg, upsertType)
+							}
 							metrics.ctwaRecoveryFailures.inc({ reason: 'unavailable_fanout' })
 							return sendMessageAck(node)
 						}
@@ -2505,7 +2594,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 							}
 
 							const encNode = getBinaryNodeChild(node, 'enc')
-							await sendRetryRequest(node, !encNode)
+							await sendRetryRequest(node, !encNode, errorMessage)
 							if (retryRequestDelayMs) {
 								await delay(retryRequestDelayMs)
 							}
@@ -2514,7 +2603,7 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 							// Still attempt retry even if pre-key upload failed
 							try {
 								const encNode = getBinaryNodeChild(node, 'enc')
-								await sendRetryRequest(node, !encNode)
+								await sendRetryRequest(node, !encNode, errorMessage)
 							} catch (retryErr) {
 								logger.error({ retryErr }, 'Failed to send retry after error handling')
 							}
@@ -2548,6 +2637,11 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 
 						await sendReceipt(msg.key.remoteJid!, participant!, [msg.key.id!], type)
 
+						// NOTE: do NOT send view_once_read from a linked device (API).
+						// WA shows view-once as view_once_unavailable_fanout on linked devices — only the
+						// primary phone sends view_once_read when the user actually opens it.
+						// Sending it from a linked device causes WA to flag the account and disables view-once.
+
 						// send ack for history message
 						const isAnyHistoryMsg = getHistoryMsg(msg.message!)
 						if (isAnyHistoryMsg) {
@@ -3032,6 +3126,40 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 		identifier: string,
 		exec: (node: BinaryNode) => Promise<void>
 	) => {
+		// Fast path: ack and drop ignored JIDs before entering the buffer/queue.
+		// Skips type='call' so call events are never silently dropped via
+		// shouldIgnoreJid (preserves InfiniteAPI's pre-existing behavior).
+		// Wrapped in try/catch so a throw from shouldIgnoreJid (user callback)
+		// or sendMessageAck (e.g. websocket closed) is routed through
+		// onUnexpectedError instead of becoming an unhandled rejection —
+		// matches the protection processNodeWithBuffer provides.
+		if (type !== 'call') {
+			try {
+				const from = node.attrs.from
+				let ignoreJid = from
+				if (type === 'receipt' && from) {
+					const attrs = node.attrs
+					const isLid = attrs.from!.includes('lid')
+					const isNodeFromMe = areJidsSameUser(
+						attrs.participant || attrs.from,
+						isLid ? authState.creds.me?.lid : authState.creds.me?.id
+					)
+					ignoreJid = !isNodeFromMe || isJidGroup(attrs.from) ? attrs.from : attrs.recipient
+				}
+
+				if (ignoreJid && ignoreJid !== S_WHATSAPP_NET && shouldIgnoreJid(ignoreJid)) {
+					// Plain ack (no NACK error code) preserves InfiniteAPI's prior
+					// behavior — ignored stanzas are an intentional drop, not a
+					// processing failure, so we don't want server-side retries.
+					await sendMessageAck(node)
+					return
+				}
+			} catch (error) {
+				onUnexpectedError(error as Error, identifier)
+				return
+			}
+		}
+
 		const isOffline = !!node.attrs.offline
 
 		if (isOffline) {
@@ -3130,19 +3258,24 @@ export const makeMessagesRecvSocket = (config: SocketConfig) => {
 			// Await index load first — prevents overwriting a more complete persisted index
 			// if the connection closes before the initial load finishes.
 			tcTokenIndexLoaded
-				.then(() => {
-					Promise.resolve(
-						authState.keys.set({
+				.then(async () => {
+					try {
+						// Same merge-with-persisted invariant as scheduleTcTokenIndexSave —
+						// other layers may have written cross-layer JIDs to the index since
+						// our in-memory set was last updated.
+						const merged = await buildMergedTcTokenIndexWrite(authState.keys, tcTokenKnownJids)
+						await authState.keys.set({
 							tctoken: {
+								...merged,
 								[TC_TOKEN_INDEX_KEY]: {
-									token: Buffer.from(JSON.stringify([...tcTokenKnownJids]), 'utf8'),
+									...merged[TC_TOKEN_INDEX_KEY],
 									timestamp: unixTimestampSeconds().toString()
 								}
 							}
 						})
-					).catch(() => {
+					} catch {
 						/* non-critical */
-					})
+					}
 				})
 				.catch(() => {
 					/* non-critical */

src/Socket/messages-send.ts

@@ -1,3 +1,4 @@
+import { randomBytes } from 'crypto'
 import NodeCache from '@cacheable/node-cache'
 import { Boom } from '@hapi/boom'
 import { proto } from '../../WAProto/index.js'
@@ -8,6 +9,7 @@ import type {
 	AlbumMessageOptions,
 	AlbumSendResult,
 	AnyMessageContent,
+	LIDMapping,
 	MediaConnInfo,
 	MessageReceiptType,
 	MessageRelayOptions,
@@ -44,7 +46,10 @@ import { makeKeyedMutex } from '../Utils/make-mutex'
 import { metrics, recordMessageFailure, recordMessageSent } from '../Utils/prometheus-metrics'
 import { getMessageReportingToken, shouldIncludeReportingToken } from '../Utils/reporting-utils'
 import {
+	buildMergedTcTokenIndexWrite,
+	isRegularUser,
 	isTcTokenExpired,
+	resolveIssuanceJid,
 	resolveTcTokenJid,
 	shouldSendNewTcToken,
 	storeTcTokensFromIqResult
@@ -123,6 +128,15 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 	// Tracks JIDs with an in-flight getPrivacyTokens IQ to avoid duplicate concurrent fetches
 	const tcTokenFetchingJids = new Set<string>()
 
+	/**
+	 * Set of tctoken storage JIDs with a fire-and-forget `issuePrivacyTokens` IQ in flight.
+	 * Distinct from `tcTokenFetchingJids` (which dedupes inbound *fetches* of the peer's
+	 * token). Prevents duplicate IQs when a caller fires several rapid back-to-back sends
+	 * to the same contact before `senderTimestamp` persists. Entries are always removed
+	 * in `.finally()`, so the set is bounded by current concurrency.
+	 */
+	const inFlightTcTokenIssuance = new Set<string>()
+
 	let mediaConn: Promise<MediaConnInfo>
 	const refreshMediaConn = async (forceGet = false) => {
 		const media = await mediaConn
@@ -337,6 +351,33 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				}
 			}
 
+			// 4th LID→PN source: device-list entries sharing the same raw_id
+			// WA Business uses this for accounts where HistorySync sends zero phoneNumberToLidMappings
+			const allEntries = [...result.list, ...result.sideList]
+			const rawIdMap = new Map<number, { pn?: string; lid?: string }>()
+			for (const item of allEntries) {
+				if (typeof item.rawId !== 'number' || isNaN(item.rawId)) continue
+				const decoded = jidDecode(item.id)
+				if (!decoded) continue
+				const entry = rawIdMap.get(item.rawId) || {}
+				if (decoded.server === 'lid' || decoded.server === 'hosted.lid') {
+					entry.lid = item.id
+				} else if (decoded.server === 's.whatsapp.net' || decoded.server === 'c.us') {
+					entry.pn = item.id
+				}
+				rawIdMap.set(item.rawId, entry)
+			}
+			const rawIdMappings: LIDMapping[] = []
+			for (const { pn, lid } of rawIdMap.values()) {
+				if (pn && lid) {
+					rawIdMappings.push({ lid: jidNormalizedUser(lid), pn: jidNormalizedUser(pn) })
+				}
+			}
+			if (rawIdMappings.length > 0) {
+				await signalRepository.lidMapping.storeLIDPNMappings(rawIdMappings)
+				logger.debug({ count: rawIdMappings.length }, 'stored LID-PN mappings from raw_id pairing')
+			}
+
 			const meId = authState.creds.me?.id
 			if (!meId) throw new Boom('Not authenticated', { statusCode: 401 })
 			const meLid = authState.creds.me?.lid || ''
@@ -507,6 +548,38 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 		return didFetchNewSession
 	}
 
+	const canonicalizeCarouselRecipients = async (recipientJids: string[]): Promise<string[]> => {
+		if (!recipientJids.length) {
+			return recipientJids
+		}
+
+		const pnRecipients = [...new Set(recipientJids.filter(jid => isAnyPnUser(jid)))]
+		if (!pnRecipients.length) {
+			return recipientJids
+		}
+
+		const mappings = (await signalRepository.lidMapping.getLIDsForPNs(pnRecipients)) || []
+		if (!mappings.length) {
+			logger.debug({ recipientCount: recipientJids.length }, '[CAROUSEL] No PN→LID recipient mappings found')
+			return recipientJids
+		}
+
+		const pnToLid = new Map(mappings.map(item => [item.pn, item.lid]))
+		const mapped = recipientJids.map(jid => pnToLid.get(jid) || jid)
+		const changed = mapped.filter((jid, index) => jid !== recipientJids[index]).length
+
+		logger.info(
+			{
+				recipientCount: recipientJids.length,
+				pnRecipients: pnRecipients.length,
+				mappedRecipients: changed
+			},
+			'[CAROUSEL] Canonicalized recipient addressing to LID before session assert/encrypt'
+		)
+
+		return mapped
+	}
+
 	const sendPeerDataOperationMessage = async (
 		pdoMessage: proto.Message.IPeerDataOperationRequestMessage
 	): Promise<string> => {
@@ -541,6 +614,82 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 		return msgId
 	}
 
+	const resolveDsmMessageForRecipient = (
+		jid: string,
+		patchedMessage: proto.IMessage,
+		dsmMessage: proto.IMessage | undefined,
+		meId: string,
+		meLid: string | undefined,
+		meLidUser: string | null | undefined
+	) => {
+		if (!dsmMessage) {
+			return patchedMessage
+		}
+
+		const { user: targetUser } = jidDecode(jid)!
+		const { user: ownPnUser } = jidDecode(meId)!
+		const isOwnUser = targetUser === ownPnUser || (meLidUser && targetUser === meLidUser)
+		const isExactSenderDevice = jid === meId || (meLid && jid === meLid)
+
+		if (isOwnUser && !isExactSenderDevice) {
+			logger.debug({ jid, targetUser }, 'Using DSM for own device')
+			return dsmMessage
+		}
+
+		return patchedMessage
+	}
+
+	const encryptPatchedMessageForRecipient = async ({
+		jid,
+		patchedMessage,
+		dsmMessage,
+		meId,
+		meLid,
+		meLidUser,
+		extraAttrs,
+		onPkmsg
+	}: {
+		jid: string
+		patchedMessage: proto.IMessage
+		dsmMessage: proto.IMessage | undefined
+		meId: string
+		meLid: string | undefined
+		meLidUser: string | null | undefined
+		extraAttrs: BinaryNode['attrs'] | undefined
+		onPkmsg: () => void
+	}) => {
+		if (!jid) return null
+
+		try {
+			const msgToEncrypt = resolveDsmMessageForRecipient(jid, patchedMessage, dsmMessage, meId, meLid, meLidUser)
+			const bytes = encodeWAMessage(msgToEncrypt)
+			const mutexKey = jid
+
+			return await encryptionMutex.mutex(mutexKey, async () => {
+				const { type, ciphertext } = await signalRepository.encryptMessage({ jid, data: bytes })
+
+				if (type === 'pkmsg') {
+					onPkmsg()
+				}
+
+				return {
+					tag: 'to',
+					attrs: { jid },
+					content: [
+						{
+							tag: 'enc',
+							attrs: { v: '2', type, ...(extraAttrs || {}) },
+							content: ciphertext
+						}
+					]
+				} as BinaryNode
+			})
+		} catch (err) {
+			logger.error({ jid, err }, 'Failed to encrypt for recipient')
+			return null
+		}
+	}
+
 	const createParticipantNodes = async (
 		recipientJids: string[],
 		message: proto.IMessage,
@@ -560,58 +709,23 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 		const meId = authState.creds.me?.id
 		if (!meId) throw new Boom('Not authenticated', { statusCode: 401 })
 		const meLid = authState.creds.me?.lid
-		const meLidUser = meLid ? jidDecode(meLid)?.user : null
+		const meLidUser = meLid ? (jidDecode(meLid)?.user ?? null) : null
+		const onPkmsg = () => {
+			shouldIncludeDeviceIdentity = true
+		}
 
 		const encryptionPromises = (patchedMessages as { recipientJid: string; message: proto.IMessage }[]).map(
-			async ({ recipientJid: jid, message: patchedMessage }: { recipientJid: string; message: proto.IMessage }) => {
-				try {
-					if (!jid) return null
-
-					let msgToEncrypt = patchedMessage
-
-					if (dsmMessage) {
-						const { user: targetUser } = jidDecode(jid)!
-						const { user: ownPnUser } = jidDecode(meId)!
-						const ownLidUser = meLidUser
-
-						const isOwnUser = targetUser === ownPnUser || (ownLidUser && targetUser === ownLidUser)
-						const isExactSenderDevice = jid === meId || (meLid && jid === meLid)
-
-						if (isOwnUser && !isExactSenderDevice) {
-							msgToEncrypt = dsmMessage
-							logger.debug({ jid, targetUser }, 'Using DSM for own device')
-						}
-					}
-
-					const bytes = encodeWAMessage(msgToEncrypt)
-					const mutexKey = jid
-
-					const node = await encryptionMutex.mutex(mutexKey, async () => {
-						const { type, ciphertext } = await signalRepository.encryptMessage({ jid, data: bytes })
-
-						if (type === 'pkmsg') {
-							shouldIncludeDeviceIdentity = true
-						}
-
-						return {
-							tag: 'to',
-							attrs: { jid },
-							content: [
-								{
-									tag: 'enc',
-									attrs: { v: '2', type, ...(extraAttrs || {}) },
-									content: ciphertext
-								}
-							]
-						}
-					})
-
-					return node
-				} catch (err) {
-					logger.error({ jid, err }, 'Failed to encrypt for recipient')
-					return null
-				}
-			}
+			({ recipientJid: jid, message: patchedMessage }: { recipientJid: string; message: proto.IMessage }) =>
+				encryptPatchedMessageForRecipient({
+					jid,
+					patchedMessage,
+					dsmMessage,
+					meId,
+					meLid,
+					meLidUser,
+					extraAttrs,
+					onPkmsg
+				})
 		)
 
 		const nodes = (await Promise.all(encryptionPromises)).filter(node => node !== null) as BinaryNode[]
@@ -939,7 +1053,8 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 		}
 
 		await authState.keys.transaction(async () => {
-			const mediaType = getMediaType(message)
+			// normalizeMessageContent unwraps viewOnceMessage/viewOnceMessageV2 so getMediaType works correctly
+			const mediaType = getMediaType(normalizeMessageContent(message) || message)
 			if (mediaType) {
 				extraAttrs['mediatype'] = mediaType
 			}
@@ -949,7 +1064,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				const bytes = encodeNewsletterMessage(patched as proto.IMessage)
 				binaryNodeContent.push({
 					tag: 'plaintext',
-					attrs: {},
+					attrs: mediaType ? { mediatype: mediaType } : {},
 					content: bytes
 				})
 				const stanza: BinaryNode = {
@@ -971,6 +1086,8 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				extraAttrs['decrypt-fail'] = 'hide' // todo: expand for reactions and other types
 			}
 
+			// view_once_write disabled — causes server to drop message (validation fails for linked device sessions)
+
 			if (isGroupOrStatus && !isRetryResend) {
 				const [groupData, senderKeyMap] = await Promise.all([
 					(async () => {
@@ -1166,21 +1283,57 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 					allRecipients.push(jid)
 				}
 
-				await assertSessions(allRecipients)
+				const isCarouselFanout = isCarouselMessage(message)
+				const effectiveMeRecipients = isCarouselFanout
+					? await canonicalizeCarouselRecipients(meRecipients)
+					: meRecipients
+				const effectiveOtherRecipients = isCarouselFanout
+					? await canonicalizeCarouselRecipients(otherRecipients)
+					: otherRecipients
+				const effectiveAllRecipients = [...effectiveMeRecipients, ...effectiveOtherRecipients]
+
+				// P2: detect actual view-once media by checking inner message's viewOnce flag.
+				// viewOnceMessage wrapper is also used for interactive messages (buttons, lists, etc)
+				// which do NOT carry viewOnce=true on the media — those must NOT be filtered.
+				const viewOnceInner =
+					message.viewOnceMessageV2?.message ||
+					message.viewOnceMessage?.message ||
+					message.viewOnceMessageV2Extension?.message
+				const isViewOnceMsg = !!(
+					viewOnceInner?.imageMessage?.viewOnce ||
+					viewOnceInner?.videoMessage?.viewOnce ||
+					viewOnceInner?.audioMessage?.viewOnce
+				)
+
+				// For view-once: only send DSM to primary phone (device=0).
+				// Companion devices (device>0) are omitted — WA server generates
+				// <unavailable type="view_once"/> for them automatically.
+				// Sending explicit <unavailable> from a companion is rejected by the server.
+				const viewOnceMeRecipients = isViewOnceMsg
+					? effectiveMeRecipients.filter(jid => !jidDecode(jid)?.device)
+					: effectiveMeRecipients
+
+				// P3: assert sessions only for recipients we actually encrypt for.
+				// For view-once, companions are omitted — asserting their sessions is wasteful
+				// and could block the send if a companion session is corrupted.
+				await assertSessions([...viewOnceMeRecipients, ...effectiveOtherRecipients])
 
 				const [
 					{ nodes: meNodes, shouldIncludeDeviceIdentity: s1 },
 					{ nodes: otherNodes, shouldIncludeDeviceIdentity: s2 }
 				] = await Promise.all([
-					// For own devices: use DSM (deviceSentMessage) wrapper
-					createParticipantNodes(meRecipients, meMsg || message, extraAttrs),
-					createParticipantNodes(otherRecipients, message, extraAttrs)
+					createParticipantNodes(viewOnceMeRecipients, meMsg || message, extraAttrs),
+					createParticipantNodes(effectiveOtherRecipients, message, extraAttrs)
 				])
 				participants.push(...meNodes)
 				participants.push(...otherNodes)
 
-				if (meRecipients.length > 0 || otherRecipients.length > 0) {
-					extraAttrs['phash'] = generateParticipantHashV2([...meRecipients, ...otherRecipients])
+				// phash: para view-once inclui só celular principal + destinatários
+				const phashRecipients = isViewOnceMsg
+					? [...viewOnceMeRecipients, ...effectiveOtherRecipients]
+					: effectiveAllRecipients
+				if (phashRecipients.length > 0) {
+					extraAttrs['phash'] = generateParticipantHashV2(phashRecipients)
 				}
 
 				shouldIncludeDeviceIdentity = shouldIncludeDeviceIdentity || s1 || s2
@@ -1253,13 +1406,15 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 			const isCarousel = isCarouselMessage(message)
 
 			// Collect biz/bot nodes to append AFTER device-identity and tctoken
-			// Stanza order: participants → device-identity → tctoken → biz
-			// The biz node MUST be last for WhatsApp Web carousel rendering
+			// Stanza order: participants → device-identity → tctoken → biz (when applicable)
+			// CDP capture confirms Pastorini INCLUDES biz node for carousel (native_flow v=9, name=mixed)
 			const deferredNodes: BinaryNode[] = []
 
-			// Inject biz node for interactive messages (including carousel)
-			if (buttonType && enableInteractiveMessages) {
+			// Inject biz node for interactive messages (including carousel — CDP evidence from Pastorini)
+			if ((buttonType || isCarousel) && enableInteractiveMessages) {
 				const startTime = Date.now()
+				// When entering via isCarousel, buttonType may be undefined — default to 'native_flow'
+				const effectiveButtonType = buttonType || 'native_flow'
 
 				// Debug: Log message structure to diagnose list detection
 				const interactiveMsg =
@@ -1297,7 +1452,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				)
 
 				// Track that we're sending an interactive message
-				metrics.interactiveMessagesSent.inc({ type: buttonType })
+				metrics.interactiveMessagesSent.inc({ type: effectiveButtonType })
 
 				try {
 					// Classify button types for native_flow name and bot node decisions
@@ -1340,27 +1495,49 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 						)
 
 						const interactiveType = 'native_flow'
+						const bizContent: BinaryNode[] = [
+							{
+								tag: 'interactive',
+								attrs: {
+									type: interactiveType,
+									v: '1'
+								},
+								content: [
+									{
+										tag: interactiveType,
+										attrs: {
+											v: '9',
+											name: nativeFlowName
+										}
+									}
+								]
+							}
+						]
+
+						// CDP capture shows Pastorini includes quality_control inside biz for carousel
+						if (isCarousel) {
+							const decisionId = randomBytes(20).toString('hex')
+							bizContent.push({
+								tag: 'quality_control',
+								attrs: {
+									decision_id: decisionId
+								},
+								content: [
+									{
+										tag: 'decision_source',
+										attrs: {
+											value: 'df'
+										}
+									}
+								]
+							})
+							logger.info({ msgId, decisionId }, '[BIZ NODE] Added quality_control for carousel')
+						}
+
 						deferredNodes.push({
 							tag: 'biz',
 							attrs: {},
-							content: [
-								{
-									tag: 'interactive',
-									attrs: {
-										type: interactiveType,
-										v: '1'
-									},
-									content: [
-										{
-											tag: interactiveType,
-											attrs: {
-												v: '9',
-												name: nativeFlowName
-											}
-										}
-									]
-								}
-							]
+							content: bizContent
 						})
 					}
 
@@ -1386,11 +1563,11 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 					}
 
 					// Track success and latency after message is sent
-					metrics.interactiveMessagesSuccess.inc({ type: buttonType })
-					metrics.interactiveMessagesLatency.observe({ type: buttonType }, Date.now() - startTime)
+					metrics.interactiveMessagesSuccess.inc({ type: effectiveButtonType })
+					metrics.interactiveMessagesLatency.observe({ type: effectiveButtonType }, Date.now() - startTime)
 				} catch (error) {
-					logger.error({ error, msgId, buttonType }, '[BIZ NODE] Failed to inject biz node')
-					metrics.interactiveMessagesFailures.inc({ type: buttonType, reason: 'injection_failed' })
+					logger.error({ error, msgId, buttonType: effectiveButtonType }, '[BIZ NODE] Failed to inject biz node')
+					metrics.interactiveMessagesFailures.inc({ type: effectiveButtonType, reason: 'injection_failed' })
 				}
 			} else if (buttonType && !enableInteractiveMessages) {
 				logger.warn(
@@ -1417,7 +1594,8 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				stanza.attrs.to = destinationJid
 			}
 
-			if (shouldIncludeDeviceIdentity) {
+			// Always include device-identity for carousel (Pastorini stanza always has it)
+			if (shouldIncludeDeviceIdentity || isCarousel) {
 				;(stanza.content as BinaryNode[]).push({
 					tag: 'device-identity',
 					attrs: {},
@@ -1474,30 +1652,91 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 				}
 			}
 
-			// If tctoken is missing for a 1:1 send, fire-and-forget fetch so the
-			// retry path (error 463 → handleBadAck) can pick it up on resend
+			// If tctoken is missing for a 1:1 send, fetch it
+			// CDP capture confirms Pastorini stanza includes tctoken for carousel
 			if (!tcTokenBuffer?.length && is1on1Send && !tcTokenFetchingJids.has(tcTokenJid)) {
 				tcTokenFetchingJids.add(tcTokenJid)
 				logTcToken('fetch', { jid: destinationJid })
-				getPrivacyTokens([destinationJid])
-					.then(async fetchResult => {
+
+				if (isCarousel) {
+					// BLOCKING fetch for carousel — tctoken is required (Pastorini stanza has it)
+					try {
+						const fetchResult = await getPrivacyTokens([destinationJid])
+
+						// Direct extraction from IQ result — bypass store/read key mismatch
+						const tokensNode = getBinaryNodeChild(fetchResult, 'tokens')
+						if (tokensNode) {
+							const tokenNodes = getBinaryNodeChildren(tokensNode, 'token')
+							for (const tokenNode of tokenNodes) {
+								if (tokenNode.attrs.type === 'trusted_contact' && tokenNode.content instanceof Uint8Array) {
+									tcTokenBuffer = Buffer.from(tokenNode.content)
+									logger.info(
+										{
+											jid: destinationJid,
+											tokenLen: tcTokenBuffer.length,
+											tokenJid: tokenNode.attrs.jid,
+											timestamp: tokenNode.attrs.t
+										},
+										'[CAROUSEL] tctoken extracted directly from IQ result'
+									)
+									break
+								}
+							}
+						}
+
+						if (!tcTokenBuffer?.length) {
+							// Debug: dump the IQ result structure
+							const childTags = Array.isArray(fetchResult.content)
+								? (fetchResult.content as BinaryNode[]).map(n => `${n.tag}(${JSON.stringify(n.attrs)})`)
+								: []
+							logger.warn(
+								{ jid: destinationJid, resultTag: fetchResult.tag, resultAttrs: fetchResult.attrs, childTags },
+								'[CAROUSEL] tctoken fetch completed but NO valid token in IQ result'
+							)
+						}
+
+						// Also store for future use
 						await storeTcTokensFromIqResult({
 							result: fetchResult,
 							fallbackJid: destinationJid,
 							keys: authState.keys,
 							getLIDForPN
-							// onNewJidStored not passed — the pruning index lives in messages-recv (higher layer)
-						})
-					})
-					.catch(err => {
-						logger.debug({ jid: destinationJid, err: err?.message }, 'fire-and-forget tctoken fetch failed')
-					})
-					.finally(() => {
+						}).catch(() => {})
+					} catch (err: any) {
+						logger.warn({ jid: destinationJid, err: err?.message }, '[CAROUSEL] Blocking tctoken fetch failed')
+					} finally {
 						tcTokenFetchingJids.delete(tcTokenJid)
-					})
+					}
+				} else {
+					// Fire-and-forget for non-carousel
+					getPrivacyTokens([destinationJid])
+						.then(async fetchResult => {
+							await storeTcTokensFromIqResult({
+								result: fetchResult,
+								fallbackJid: destinationJid,
+								keys: authState.keys,
+								getLIDForPN
+							})
+						})
+						.catch(err => {
+							logger.debug({ jid: destinationJid, err: err?.message }, 'fire-and-forget tctoken fetch failed')
+						})
+						.finally(() => {
+							tcTokenFetchingJids.delete(tcTokenJid)
+						})
+				}
 			}
 
-			if (tcTokenBuffer?.length) {
+			// Gate inclusion on AB prop 10518 (privacy_token_sending_on_all_1_on_1_messages).
+			// WA Web defaults to true; if the server flips it off we mirror that to avoid
+			// divergence with the spec-compliant client.
+			//
+			// CARROUSEL EXCEPTION: Pastorini-validated carousel stanzas REQUIRE tctoken
+			// (CDP capture confirms it). If the AB prop ever flips off, dropping the
+			// tctoken from carousel would break rendering on Android. Carousel always
+			// includes the tctoken when one is available, regardless of the prop —
+			// matching the fork's existing behaviour pre-PR #2339.
+			if (tcTokenBuffer?.length && (sock.serverProps.privacyTokenOn1to1 || isCarousel)) {
 				;(stanza.content as BinaryNode[]).push({
 					tag: 'tctoken',
 					attrs: {},
@@ -1525,8 +1764,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 			logger.debug({ msgId }, `sending message to ${participants.length} devices`)
 
 			// ======= PROTOBUF ROUNDTRIP TEST: Verify encoding preserves carousel =======
-			// Only runs at debug level to avoid performance overhead in production
-			if (isCarousel && logger.level === 'debug') {
+			if (isCarousel) {
 				try {
 					const encoded = proto.Message.encode(message).finish()
 					const decoded = proto.Message.decode(encoded)
@@ -1535,15 +1773,19 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 					const card0 = decodedInteractive?.carouselMessage?.cards?.[0]
 					const card0Header = card0?.header
 
-					logger.debug(
+					logger.info(
 						{
 							msgId,
 							encodedSize: encoded.length,
+							messageKeys: Object.keys(message),
+							hasInteractive: !!message.interactiveMessage,
+							hasViewOnce: !!message.viewOnceMessage,
 							hasCarouselAfterDecode: !!decodedInteractive?.carouselMessage,
 							cardsCount,
 							card0Title: card0Header?.title,
 							card0HasImage: !!card0Header?.imageMessage,
-							card0Buttons: card0?.nativeFlowMessage?.buttons?.length || 0
+							card0Buttons: card0?.nativeFlowMessage?.buttons?.length || 0,
+							messageVersion: decodedInteractive?.carouselMessage?.messageVersion
 						},
 						'[ROUNDTRIP] Protobuf encode→decode verification'
 					)
@@ -1553,8 +1795,7 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 			}
 
 			// ======= PROTOCOL INTERCEPTOR: Dump complete stanza for debugging =======
-			// Only runs at debug level to avoid logging sensitive content in production
-			if ((buttonType || isCarousel) && logger.level === 'debug') {
+			if (buttonType || isCarousel) {
 				const dumpBinaryNode = (node: BinaryNode, indent = 0): string => {
 					if (!node) return ''
 					const pad = '  '.repeat(indent)
@@ -1595,13 +1836,39 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 			// Gated only by shouldSendNewTcToken — removed tcTokenBuffer?.length guard so
 			// issuance fires even when we don't yet hold a token (bucket boundary crossed).
 			// IMPORTANT: must run AFTER sendNode — issuing before the message causes error 463.
-			if (is1on1Send && shouldSendNewTcToken(existingTokenEntry?.senderTimestamp)) {
+			//
+			// WA Web also skips issuance for:
+			//   - protocol messages (revoke, ephemeral settings, etc — see TcTokenChatAction)
+			//   - PSA, bots, MetaAI (isRegularUser filter)
+			// and dedupes back-to-back issuances with `inFlightTcTokenIssuance` so a burst of
+			// rapid sends to the same contact only triggers a single IQ before senderTimestamp
+			// is persisted.
+			const isProtocolMsg = !!normalizeMessageContent(message)?.protocolMessage
+			// Use isRegularUser (the same Wid.isRegularUser() port that gates the store
+			// path) so we filter PSA/bot/MetaAI consistently regardless of JID server
+			// (@c.us vs @s.whatsapp.net) and device suffix. The previous PSA_WID/isJidBot
+			// checks only matched @c.us forms — destinationJid arrives normalized.
+			const isBotOrPSA = !isRegularUser(destinationJid)
+			if (
+				is1on1Send &&
+				!isProtocolMsg &&
+				!isBotOrPSA &&
+				shouldSendNewTcToken(existingTokenEntry?.senderTimestamp) &&
+				!inFlightTcTokenIssuance.has(tcTokenJid)
+			) {
+				inFlightTcTokenIssuance.add(tcTokenJid)
 				const issueTimestamp = unixTimestampSeconds()
 				logTcToken('reissue', { jid: destinationJid })
-				getPrivacyTokens([destinationJid], issueTimestamp)
+				const getPNForLID = signalRepository.lidMapping.getPNForLID.bind(signalRepository.lidMapping)
+				resolveIssuanceJid(
+					destinationJid,
+					sock.serverProps.lidTrustedTokenIssueToLid,
+					getLIDForPN,
+					getPNForLID
+				)
+					.then(issueJid => getPrivacyTokens([issueJid], issueTimestamp))
 					.then(async result => {
 						// Store any tokens received in the IQ response.
-						// onNewJidStored not passed — pruning index lives in messages-recv (higher layer).
 						await storeTcTokensFromIqResult({
 							result,
 							fallbackJid: tcTokenJid,
@@ -1612,9 +1879,11 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 						// Persist senderTimestamp unconditionally — WA Web stores it in the chat table
 						// regardless of whether a token exists. Spread preserves token+timestamp if present.
 						// WABA Android: INSERT INTO wa_trusted_contacts_send (jid, sent_tc_token_timestamp, real_issue_timestamp)
-						// VALUES (?, ?, 0) — realIssueTimestamp=0 means issued but not yet confirmed by server
+						// VALUES (?, ?, 0) — realIssueTimestamp=0 means issued but not yet confirmed by server.
+						// Also bump the cross-session prune index so this JID is tracked persistently.
 						const currentData = await authState.keys.get('tctoken', [tcTokenJid])
 						const currentEntry = currentData[tcTokenJid]
+						const indexWrite = await buildMergedTcTokenIndexWrite(authState.keys, [tcTokenJid])
 						await authState.keys.set({
 							tctoken: {
 								[tcTokenJid]: {
@@ -1622,7 +1891,8 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 									token: currentEntry?.token ?? Buffer.alloc(0),
 									senderTimestamp: issueTimestamp,
 									realIssueTimestamp: 0
-								}
+								},
+								...indexWrite
 							}
 						})
 
@@ -1631,6 +1901,9 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 					.catch(err => {
 						logTcToken('reissue_fail', { jid: destinationJid, error: err?.message })
 					})
+					.finally(() => {
+						inFlightTcTokenIssuance.delete(tcTokenJid)
+					})
 			}
 
 			// Log with [BAILEYS] prefix
@@ -1707,6 +1980,15 @@ export const makeMessagesSocket = (config: SocketConfig) => {
 	}
 
 	const getMediaType = (message: proto.IMessage) => {
+		// For view-once media, unwrap the viewOnceMessage wrapper before checking media type
+		const inner =
+			message.viewOnceMessage?.message ||
+			message.viewOnceMessageV2?.message ||
+			message.viewOnceMessageV2Extension?.message
+		if (inner) {
+			return getMediaType(inner)
+		}
+
 		if (message.imageMessage) {
 			return 'image'
 		} else if (message.videoMessage) {

src/Socket/newsletter.ts

@@ -123,11 +123,11 @@ export const makeNewsletterSocket = (config: SocketConfig) => {
 		},
 
 		newsletterMute: (jid: string) => {
-			return executeWMexQuery({ newsletter_id: jid }, QueryIds.MUTE, XWAPaths.xwa2_newsletter_mute_v2)
+			return executeWMexQuery({ input: { newsletter_id: jid, type: 'MUTE_ADMIN_ACTIVITY', value: 'OFF' } }, QueryIds.MUTE, XWAPaths.xwa2_newsletter_mute_v2)
 		},
 
 		newsletterUnmute: (jid: string) => {
-			return executeWMexQuery({ newsletter_id: jid }, QueryIds.UNMUTE, XWAPaths.xwa2_newsletter_unmute_v2)
+			return executeWMexQuery({ input: { newsletter_id: jid, type: 'MUTE_ADMIN_ACTIVITY', value: 'ON' } }, QueryIds.UNMUTE, XWAPaths.xwa2_newsletter_unmute_v2)
 		},
 
 		newsletterUpdateName: async (jid: string, name: string) => {

src/Socket/socket.ts

@@ -701,10 +701,12 @@ export const makeSocket = (config: SocketConfig) => {
 			}
 		}
 
-		// Prevent multiple concurrent uploads
+		// Prevent multiple concurrent uploads — if one is already running, wait for it and return:
+		// the concurrent upload already replenished the pool, so there is nothing left to do.
 		if (uploadPreKeysPromise) {
 			logger.debug('Pre-key upload already in progress, waiting for completion')
 			await uploadPreKeysPromise
+			return
 		}
 
 		const uploadLogic = async () => {
@@ -784,14 +786,15 @@ export const makeSocket = (config: SocketConfig) => {
 		try {
 			let count = 0
 			const preKeyCount = await getAvailablePreKeysOnServer()
-			if (preKeyCount === 0) count = INITIAL_PREKEY_COUNT
-			else count = MIN_PREKEY_COUNT
+			// How many to upload: top-up to INITIAL_PREKEY_COUNT from whatever remains on server
+			count = Math.max(0, INITIAL_PREKEY_COUNT - preKeyCount)
 			const { exists: currentPreKeyExists, currentPreKeyId } = await verifyCurrentPreKeyExists()
 
 			logger.info(`${preKeyCount} pre-keys found on server`)
 			logger.info(`Current prekey ID: ${currentPreKeyId}, exists in storage: ${currentPreKeyExists}`)
 
-			const lowServerCount = preKeyCount <= count
+			// Trigger upload when below the replenishment threshold, not when count < topUp amount
+			const lowServerCount = preKeyCount < MIN_PREKEY_COUNT
 			const missingCurrentPreKey = !currentPreKeyExists && currentPreKeyId > 0
 
 			const shouldUpload = lowServerCount || missingCurrentPreKey
@@ -1151,7 +1154,7 @@ export const makeSocket = (config: SocketConfig) => {
 		// Decrement active connections
 		decrementActiveConnections()
 
-		clearInterval(keepAliveReq)
+		clearTimeout(keepAliveReq)
 		clearTimeout(qrTimer)
 
 		// Clear offline-buffer safety timer so its callback cannot call ev.flush()
@@ -1262,8 +1265,16 @@ export const makeSocket = (config: SocketConfig) => {
 		})
 	}
 
-	const startKeepAliveRequest = () =>
-		(keepAliveReq = setInterval(() => {
+	const startKeepAliveRequest = () => {
+		// Use recursive setTimeout with ±15% jitter to match WA Desktop behaviour
+		// (WA Business Desktop: ~25-30s intervals with natural variance)
+		const scheduleNextKeepAlive = () => {
+			const jitter = keepAliveIntervalMs * 0.15
+			const delay = keepAliveIntervalMs + Math.floor((Math.random() * 2 - 1) * jitter)
+			keepAliveReq = setTimeout(onKeepAliveTick, delay)
+		}
+
+		const onKeepAliveTick = () => {
 			if (!lastDateRecv) {
 				lastDateRecv = new Date()
 			}
@@ -1275,6 +1286,7 @@ export const makeSocket = (config: SocketConfig) => {
 			*/
 			if (diff > keepAliveIntervalMs + 5000) {
 				void end(new Boom('Connection was lost', { statusCode: DisconnectReason.connectionLost }))
+				return // connection closing — do not reschedule
 			} else if (ws.isOpen) {
 				// Send keep-alive ping via sendNode() (fire-and-forget) instead of query().
 				// query() wraps the ping in the query circuit breaker — when that breaker is
@@ -1297,7 +1309,15 @@ export const makeSocket = (config: SocketConfig) => {
 			} else {
 				logger.warn('keep alive called when WS not open')
 			}
-		}, keepAliveIntervalMs))
+
+			// Do not reschedule once shutdown has started (closed set by end() on any concurrent path)
+			if (!closed) {
+				scheduleNextKeepAlive()
+			}
+		}
+
+		scheduleNextKeepAlive()
+	}
 	/** i have no idea why this exists. pls enlighten me */
 	const sendPassiveIq = (tag: 'passive' | 'active') =>
 		query({

src/Types/Contact.ts

@@ -9,6 +9,8 @@ export interface Contact {
 	name?: string
 	/** name of the contact, the contact has set on their own on WA */
 	notify?: string
+	/** username associated with this contact, when provided by WA */
+	username?: string
 	/** I have no idea */
 	verifiedName?: string
 	// Baileys Added

src/Types/Events.ts

@@ -27,6 +27,8 @@ export type BaileysEventMap = {
 		chats: Chat[]
 		contacts: Contact[]
 		messages: WAMessage[]
+		/** Past participants for group chats (people who left/were removed). userJid is always a phone number (PN), never a LID. */
+		pastParticipants?: proto.IPastParticipants[] | null
 		isLatest?: boolean
 		progress?: number | null
 		syncType?: proto.HistorySync.HistorySyncType | null
@@ -79,6 +81,7 @@ export type BaileysEventMap = {
 		id: string
 		author: string
 		authorPn?: string
+		authorUsername?: string
 		participants: GroupParticipant[]
 		action: ParticipantAction
 	}
@@ -86,6 +89,7 @@ export type BaileysEventMap = {
 		id: string
 		author: string
 		authorPn?: string
+		authorUsername?: string
 		participant: string
 		participantPn?: string
 		action: RequestJoinAction
@@ -185,6 +189,8 @@ export type BufferedEventData = {
 		chats: { [jid: string]: Chat }
 		contacts: { [jid: string]: Contact }
 		messages: { [uqId: string]: WAMessage }
+		/** Keyed by groupJid for O(1) deduplication across chunks */
+		pastParticipants: { [groupJid: string]: proto.IPastParticipant[] }
 		empty: boolean
 		isLatest: boolean
 		progress?: number | null

src/Types/GroupMetadata.ts

@@ -20,17 +20,20 @@ export interface GroupMetadata {
 	addressingMode?: WAMessageAddressingMode
 	owner: string | undefined
 	ownerPn?: string | undefined
+	ownerUsername?: string | undefined
 	owner_country_code?: string | undefined
 	subject: string
 	/** group subject owner */
 	subjectOwner?: string
 	subjectOwnerPn?: string
+	subjectOwnerUsername?: string
 	/** group subject modification date */
 	subjectTime?: number
 	creation?: number
 	desc?: string
 	descOwner?: string
 	descOwnerPn?: string
+	descOwnerUsername?: string
 	descId?: string
 	descTime?: number
 	/** if this group is part of a community, it returns the jid of the community to which it belongs */
@@ -56,6 +59,7 @@ export interface GroupMetadata {
 	/** the person who added you to group or changed some setting in group */
 	author?: string
 	authorPn?: string
+	authorUsername?: string
 }
 
 export interface WAGroupCreateResponse {

src/Types/Message.ts

@@ -19,7 +19,9 @@ export type WAContactMessage = proto.Message.IContactMessage
 export type WAContactsArrayMessage = proto.Message.IContactsArrayMessage
 export type WAMessageKey = proto.IMessageKey & {
 	remoteJidAlt?: string
+	remoteJidUsername?: string
 	participantAlt?: string
+	participantUsername?: string
 	server_id?: string
 	addressingMode?: string
 	isViewOnce?: boolean // TODO: remove out of the message key, place in WebMessageInfo
@@ -155,6 +157,7 @@ export type MessageReceiptType =
 	| 'sender'
 	| 'inactive'
 	| 'played'
+	| 'view_once_read'
 	| undefined
 
 export type MediaConnInfo = {
@@ -178,6 +181,8 @@ export interface WAUrlInfo {
 type Mentionable = {
 	/** list of jids that are mentioned in the accompanying text */
 	mentions?: string[]
+	/** mention all participants in the group */
+	mentionAll?: boolean
 }
 type Contextable = {
 	/** add contextInfo to the message */
@@ -990,8 +995,16 @@ export type MessageGenerationOptionsFromContent = MiscMessageGenerationOptions &
 
 export type WAMediaUploadFunction = (
 	encFilePath: string,
-	opts: { fileEncSha256B64: string; mediaType: MediaType; timeoutMs?: number }
-) => Promise<{ mediaUrl: string; directPath: string; meta_hmac?: string; ts?: number; fbid?: number }>
+	opts: { fileEncSha256B64: string; mediaType: MediaType; timeoutMs?: number; newsletter?: boolean }
+) => Promise<{
+	mediaUrl: string | undefined
+	directPath: string
+	meta_hmac?: string
+	ts?: number
+	fbid?: number
+	thumbnailDirectPath?: string
+	thumbnailSha256?: string
+}>
 
 export type MediaGenerationOptions = {
 	logger?: ILogger

src/Types/Newsletter.ts

@@ -4,10 +4,10 @@ export enum XWAPaths {
 	xwa2_newsletter_view = 'xwa2_newsletter_view',
 	xwa2_newsletter_metadata = 'xwa2_newsletter',
 	xwa2_newsletter_admin_count = 'xwa2_newsletter_admin',
-	xwa2_newsletter_mute_v2 = 'xwa2_newsletter_mute_v2',
-	xwa2_newsletter_unmute_v2 = 'xwa2_newsletter_unmute_v2',
-	xwa2_newsletter_follow = 'xwa2_newsletter_follow',
-	xwa2_newsletter_unfollow = 'xwa2_newsletter_unfollow',
+	xwa2_newsletter_mute_v2 = 'xwa2_newsletter_update_user_setting',
+	xwa2_newsletter_unmute_v2 = 'xwa2_newsletter_update_user_setting',
+	xwa2_newsletter_follow = 'xwa2_newsletter_join_v2',
+	xwa2_newsletter_unfollow = 'xwa2_newsletter_leave_v2',
 	xwa2_newsletter_change_owner = 'xwa2_newsletter_change_owner',
 	xwa2_newsletter_demote = 'xwa2_newsletter_demote',
 	xwa2_newsletter_delete_v2 = 'xwa2_newsletter_delete_v2'
@@ -17,10 +17,10 @@ export enum QueryIds {
 	UPDATE_METADATA = '24250201037901610',
 	METADATA = '6563316087068696',
 	SUBSCRIBERS = '9783111038412085',
-	FOLLOW = '7871414976211147',
-	UNFOLLOW = '7238632346214362',
-	MUTE = '29766401636284406',
-	UNMUTE = '9864994326891137',
+	FOLLOW = '24404358912487870',
+	UNFOLLOW = '9767147403369991',
+	MUTE = '31938993655691868',
+	UNMUTE = '31938993655691868',
 	ADMIN_COUNT = '7130823597031706',
 	CHANGE_OWNER = '7341777602580933',
 	DEMOTE = '6551828931592903',

src/Utils/auth-utils.ts

@@ -341,7 +341,18 @@ export const addTransactionCapability = (
 
 						return result
 					} catch (error) {
-						logger.error({ error }, 'transaction failed, rolling back')
+						// SessionError is part of the normal Bad MAC recovery flow
+						// (retry receipt → sender resends as pkmsg → new session within ~1.3s).
+						// Logging it as ERROR creates 2 noise lines per recoverable Bad MAC cycle.
+						// Downgrade to debug for SessionError; keep ERROR for everything else.
+						// The error is still re-thrown — recovery behavior is unchanged.
+						const errName = (error as { name?: string })?.name
+						if (errName === 'SessionError') {
+							logger.debug({ error }, 'transaction failed (SessionError — recoverable via retry receipt)')
+						} else {
+							logger.error({ error }, 'transaction failed, rolling back')
+						}
+
 						throw error
 					}
 				})

src/Utils/chat-utils.ts

@@ -1083,6 +1083,7 @@ export const processSyncAction = (
 					action.lidContactAction.firstName ||
 					action.lidContactAction.username ||
 					undefined,
+				username: action.lidContactAction.username || undefined,
 				lid: id!,
 				phoneNumber: undefined
 			}

src/Utils/decode-wa-message.ts

@@ -58,7 +58,11 @@ export const BAD_MAC_ERROR_TEXT = 'Bad MAC'
 export const DECRYPTION_RETRY_CONFIG = {
 	maxRetries: 3,
 	baseDelayMs: 100,
-	sessionRecordErrors: ['No session record', 'SessionError: No session record'],
+	// 'No matching sessions found' is the libsignal error when decryptWithSessions exhausts
+	// all stored sessions for a JID. Same recovery flow (retry receipt → pkmsg → new session)
+	// — categorise it as session-record so the caller logs DEBUG on retry, ERROR only when
+	// retries are exhausted (instead of dumping the full stack as an unknown error).
+	sessionRecordErrors: ['No session record', 'SessionError: No session record', 'No matching sessions found'],
 	corruptedSessionErrors: ['Bad MAC', 'MessageCounterError', MISSING_KEYS_ERROR_TEXT]
 }
 
@@ -242,10 +246,14 @@ export function decodeMessageNode(stanza: BinaryNode, meId: string, meLid: strin
 	const key: WAMessageKey = {
 		remoteJid: chatId,
 		remoteJidAlt: !isJidGroup(chatId) ? addressingContext.senderAlt : undefined,
+		remoteJidUsername: !isJidGroup(chatId)
+			? stanza.attrs.peer_recipient_username || stanza.attrs.recipient_username
+			: undefined,
 		fromMe,
 		id: msgId,
 		participant,
 		participantAlt: isJidGroup(chatId) ? addressingContext.senderAlt : undefined,
+		participantUsername: stanza.attrs.participant ? stanza.attrs.participant_username : undefined,
 		addressingMode: addressingContext.addressingMode,
 		...(msgType === 'newsletter' && stanza.attrs.server_id ? { server_id: stanza.attrs.server_id } : {})
 	}
@@ -392,6 +400,23 @@ export const decryptMessageNode = (
 						} else {
 							fullMessage.message = msg
 						}
+
+						// Detect view-once media on stanza 1 received by linked device.
+						// viewOnceMessage wrapper is also used for interactive messages
+						// (interactiveMessage, listMessage, nativeFlowMessage) -- those do NOT have
+						// imageMessage.viewOnce / videoMessage.viewOnce / audioMessage.viewOnce = true.
+						// Only real view-once media carries viewOnce: true on the inner media message.
+						const viewOnceInner =
+							msg.viewOnceMessage?.message ||
+							msg.viewOnceMessageV2?.message ||
+							msg.viewOnceMessageV2Extension?.message
+						if (
+							viewOnceInner?.imageMessage?.viewOnce ||
+							viewOnceInner?.videoMessage?.viewOnce ||
+							viewOnceInner?.audioMessage?.viewOnce
+						) {
+							fullMessage.key.isViewOnce = true
+						}
 					} catch (err: any) {
 						// Check if this is a final failure after all retries exhausted
 						const isRetryExhausted = err instanceof RetryExhaustedError
@@ -400,9 +425,26 @@ export const decryptMessageNode = (
 						const isCorrupted = isCorruptedSessionError(originalError)
 						const isSessionRecord = isSessionRecordError(originalError)
 
+						// Slim error projection — keep name/message/type for diagnosis,
+						// drop `stack` which adds 4-5 lines of node_modules paths per log
+						// for known-recoverable libsignal errors.
+						//
+						// CRITICAL: only slim for KNOWN-RECOVERABLE categories (corrupted /
+						// session-record). The unknown-error branch keeps the full Error so
+						// protobuf/parsing/runtime bugs still emit a stack trace where it
+						// matters most. Catches Copilot/Codex P2 review on PR #391.
+						const slimErr = originalError
+							? {
+									name: (originalError as { name?: string }).name,
+									message: (originalError as { message?: string }).message,
+									type: (originalError as { type?: string }).type
+								}
+							: undefined
+						const isRecoverableCategory = isCorrupted || isSessionRecord
+
 						const errorContext = {
 							key: fullMessage.key,
-							err: originalError,
+							err: isRecoverableCategory ? slimErr : originalError,
 							messageType: tag === 'plaintext' ? 'plaintext' : attrs.type,
 							sender,
 							author,

src/Utils/event-buffer.ts

@@ -1,4 +1,5 @@
 import EventEmitter from 'events'
+import { proto } from '../../WAProto/index.js'
 import type {
 	BaileysEvent,
 	BaileysEventEmitter,
@@ -890,6 +891,7 @@ const makeBufferData = (): BufferedEventData => {
 			chats: {},
 			messages: {},
 			contacts: {},
+			pastParticipants: {},
 			isLatest: false,
 			empty: true
 		},
@@ -967,6 +969,28 @@ function append<E extends BufferableEvent>(
 				}
 			}
 
+			// Merge pastParticipants with deduplication by groupJid and by userJid within each group.
+			// Multiple HistorySync chunks can carry the same group -- we merge rather than concatenate
+			// to avoid duplicate entries in the final event delivered to the consumer.
+			for (const group of (eventData.pastParticipants ?? []) as proto.IPastParticipants[]) {
+				const groupJid = group.groupJid
+				if (!groupJid) continue
+
+				if (!data.historySets.pastParticipants[groupJid]) {
+					data.historySets.pastParticipants[groupJid] = []
+				}
+
+				const existing = data.historySets.pastParticipants[groupJid]
+				const seenJids = new Set(existing.map(p => p.userJid).filter(Boolean))
+
+				for (const participant of (group.pastParticipants ?? []) as proto.IPastParticipant[]) {
+					if (participant.userJid && !seenJids.has(participant.userJid)) {
+						existing.push(participant)
+						seenJids.add(participant.userJid)
+					}
+				}
+			}
+
 			data.historySets.empty = false
 			data.historySets.syncType = eventData.syncType
 			data.historySets.progress = eventData.progress
@@ -1292,6 +1316,10 @@ function consolidateEvents(data: BufferedEventData) {
 			chats: Object.values(data.historySets.chats),
 			messages: Object.values(data.historySets.messages),
 			contacts: Object.values(data.historySets.contacts),
+			// Convert dedup map back to array. Each entry has groupJid + participants (all unique userJids).
+			pastParticipants: Object.entries(data.historySets.pastParticipants).map(
+				([groupJid, participants]) => ({ groupJid, pastParticipants: participants })
+			),
 			syncType: data.historySets.syncType,
 			progress: data.historySets.progress,
 			isLatest: data.historySets.isLatest,

src/Utils/history.ts

@@ -1,5 +1,6 @@
+import { pipeline } from 'stream/promises'
 import { promisify } from 'util'
-import { inflate } from 'zlib'
+import { createInflate, inflate } from 'zlib'
 import { proto } from '../../WAProto/index.js'
 import type { Chat, Contact, LIDMapping, WAMessage } from '../Types'
 import { WAMessageStubType } from '../Types'
@@ -15,7 +16,8 @@ import {
 import { toNumber } from './generics'
 import type { ILogger } from './logger.js'
 import { normalizeMessageContent } from './messages'
-import { downloadContentFromMessage } from './messages-media'
+import { DEFAULT_ORIGIN } from '../Defaults'
+import { downloadContentFromMessage, getUrlFromDirectPath } from './messages-media'
 
 const inflatePromise = promisify(inflate)
 
@@ -28,16 +30,15 @@ const inflatePromise = promisify(inflate)
  */
 export const downloadHistory = async (msg: proto.Message.IHistorySyncNotification, options: RequestInit) => {
 	const stream = await downloadContentFromMessage(msg, 'md-msg-hist', { options })
-	const bufferArray: Buffer[] = []
-	for await (const chunk of stream) {
-		bufferArray.push(chunk)
-	}
-
-	let buffer: Buffer = Buffer.concat(bufferArray)
-
-	// decompress buffer
-	buffer = await inflatePromise(buffer)
+	// Pipe decrypted stream directly through zlib inflate.
+	// Avoids allocating an intermediate buffer for the compressed payload —
+	// memory peaks during 50MB history syncs drop ~50% (PR upstream #2333).
+	const inflater = createInflate()
+	const chunks: Buffer[] = []
+	inflater.on('data', (chunk: Buffer) => chunks.push(chunk))
+	await pipeline(stream, inflater)
 
+	const buffer = Buffer.concat(chunks)
 	const syncData = proto.HistorySync.decode(buffer)
 	return syncData
 }
@@ -314,6 +315,7 @@ export const processHistoryMessage = (item: proto.IHistorySync, logger?: ILogger
 				contacts.push({
 					id: chatId,
 					name: chat.displayName || chat.name || chat.username || undefined,
+					username: chat.username || undefined,
 					lid: chat.lidJid || chat.accountLid || undefined,
 					phoneNumber: chat.pnJid || undefined
 				})
@@ -359,7 +361,7 @@ export const processHistoryMessage = (item: proto.IHistorySync, logger?: ILogger
 					}
 				}
 
-				chats.push({ ...chat })
+				chats.push(chat)
 			}
 
 			break
@@ -374,10 +376,25 @@ export const processHistoryMessage = (item: proto.IHistorySync, logger?: ILogger
 	// Convert Map back to array for return
 	const lidPnMappings = Array.from(lidPnMap.values())
 
+	// Normalize pastParticipants: resolve LID userJids → PN so the consumer always
+	// receives a phone number, never an opaque LID identifier.
+	// Uses the lidPnMap built above (populated from phoneNumberToLidMappings + conversations).
+	// If a LID cannot be resolved, the original value is kept rather than dropping the participant.
+	const pastParticipants: proto.IPastParticipants[] = (item.pastParticipants ?? []).map(group => ({
+		groupJid: group.groupJid,
+		pastParticipants: (group.pastParticipants ?? []).map(participant => {
+			const userJid = participant.userJid
+			if (!userJid || !isAnyLidUser(userJid)) return participant
+			const mapping = lidPnMap.get(jidNormalizedUser(userJid))
+			return mapping?.pn ? { ...participant, userJid: mapping.pn } : participant
+		})
+	}))
+
 	return {
 		chats,
 		contacts,
 		messages,
+		pastParticipants,
 		lidPnMappings,
 		syncType: item.syncType,
 		progress: item.progress
@@ -408,7 +425,23 @@ export const downloadAndProcessHistorySyncNotification = async (
 		historyMsg = await downloadHistory(msg, options)
 	}
 
-	return processHistoryMessage(historyMsg, logger)
+	const result = processHistoryMessage(historyMsg, logger)
+
+	// Mirror WA Desktop behaviour: DELETE the CDN blob only after processing succeeds.
+	// Doing this earlier (e.g. inside downloadHistory) risks permanent history loss if
+	// processing throws — the server copy would be gone and retry after reconnect would fail.
+	if (msg.directPath) {
+		const cdnUrl = getUrlFromDirectPath(msg.directPath)
+		fetch(cdnUrl, {
+			...options,
+			method: 'DELETE',
+			headers: { ...((options as RequestInit).headers ?? {}), Origin: DEFAULT_ORIGIN }
+		}).catch(() => {
+			// non-fatal — server will expire it anyway
+		})
+	}
+
+	return result
 }
 
 /**

src/Utils/identity-change-handler.ts

@@ -57,6 +57,16 @@ export type IdentityChangeContext = {
 	debounceCache: NodeCache<boolean>
 	/** Logger instance for debugging and monitoring */
 	logger: ILogger
+	/**
+	 * Invoked right before `assertSessions` is called for an existing-session identity
+	 * change. Used to kick off fire-and-forget side effects (e.g. tctoken re-issuance)
+	 * in the same order WA Web does — i.e. before the E2E session is re-established.
+	 * Must not throw; implementations are responsible for their own error handling.
+	 *
+	 * Skipped when the refresh itself is skipped (no_identity_node, invalid_notification,
+	 * skipped_companion_device, skipped_self_primary, debounced, skipped_offline).
+	 */
+	onBeforeSessionRefresh?: (jid: string) => void
 }
 
 // ============================================================================
@@ -170,6 +180,19 @@ export async function handleIdentityChange(
 	// This ensures we don't incorrectly debounce when we exit early (offline, etc.)
 	ctx.debounceCache.set(from, true)
 
+	// Fire-and-forget side effects (e.g. tctoken re-issuance) BEFORE the session is
+	// re-established. WA Web runs these in parallel with the session refresh —
+	// running afterwards would race with the next outbound send and risk error 463.
+	//
+	// Wrapped in try/catch so a misbehaving consumer callback cannot abort identity
+	// change recovery. We log and continue — assertSessions still runs so the E2E
+	// session always gets refreshed.
+	try {
+		ctx.onBeforeSessionRefresh?.(from)
+	} catch (error) {
+		ctx.logger.warn({ error, jid: from }, 'onBeforeSessionRefresh callback threw — continuing with session refresh')
+	}
+
 	// Attempt session refresh/creation
 	try {
 		await ctx.assertSessions([from], true)

src/Utils/messages-media.ts

@@ -10,7 +10,13 @@ import { join } from 'path'
 import { Readable, Transform } from 'stream'
 import { URL } from 'url'
 import { proto } from '../../WAProto/index.js'
-import { DEFAULT_ORIGIN, MEDIA_HKDF_KEY_MAPPING, MEDIA_PATH_MAP, type MediaType } from '../Defaults'
+import {
+	DEFAULT_ORIGIN,
+	MEDIA_HKDF_KEY_MAPPING,
+	MEDIA_PATH_MAP,
+	type MediaType,
+	NEWSLETTER_MEDIA_PATH_MAP
+} from '../Defaults'
 import type {
 	BaileysEventMap,
 	DownloadableMessage,
@@ -160,7 +166,7 @@ export const extractImageThumb = async (bufferOrFilePath: Readable | Buffer | st
 				height: dimensions.height
 			}
 		}
-	} else if ('jimp' in lib && typeof lib.jimp?.Jimp === 'object') {
+	} else if ('jimp' in lib && typeof lib.jimp?.Jimp === 'function') {
 		const jimp = await (lib.jimp.Jimp as any).read(bufferOrFilePath)
 		const dimensions = {
 			width: jimp.width,
@@ -612,7 +618,7 @@ export const downloadEncryptedContent = async (
 
 	const output = new Transform({
 		transform(chunk, _, callback) {
-			let data = Buffer.concat([remainingBytes, chunk])
+			let data = remainingBytes.length ? Buffer.concat([remainingBytes, chunk]) : chunk
 
 			const decryptLength = toSmallestChunkSize(data.length)
 			remainingBytes = data.slice(decryptLength)
@@ -681,6 +687,10 @@ type MediaUploadResult = {
 	meta_hmac?: string
 	ts?: number
 	fbid?: number
+	thumbnail_info?: {
+		thumbnail_sha256?: string
+		thumbnail_direct_path?: string
+	}
 }
 
 export type UploadParams = {
@@ -825,11 +835,21 @@ export const getWAUploadToServer = (
 	{ customUploadHosts, fetchAgent, logger, options }: SocketConfig,
 	refreshMediaConn: (force: boolean) => Promise<MediaConnInfo>
 ): WAMediaUploadFunction => {
-	return async (filePath, { mediaType, fileEncSha256B64, timeoutMs }) => {
+	return async (filePath, { mediaType, fileEncSha256B64, timeoutMs, newsletter }) => {
 		// send a query JSON to obtain the url & auth token to upload our media
 		let uploadInfo = await refreshMediaConn(false)
 
-		let urls: { mediaUrl: string; directPath: string; meta_hmac?: string; ts?: number; fbid?: number } | undefined
+		let urls:
+			| {
+					mediaUrl: string
+					directPath: string
+					meta_hmac?: string
+					ts?: number
+					fbid?: number
+					thumbnailDirectPath?: string
+					thumbnailSha256?: string
+			  }
+			| undefined
 		const hosts = [...customUploadHosts, ...uploadInfo.hosts]
 
 		fileEncSha256B64 = encodeBase64EncodedStringForUpload(fileEncSha256B64)
@@ -851,7 +871,11 @@ export const getWAUploadToServer = (
 			logger.debug(`uploading to "${hostname}"`)
 
 			const auth = encodeURIComponent(uploadInfo.auth)
-			const url = `https://${hostname}${MEDIA_PATH_MAP[mediaType]}/${fileEncSha256B64}?auth=${auth}&token=${fileEncSha256B64}`
+			const mediaPath = (newsletter ? NEWSLETTER_MEDIA_PATH_MAP[mediaType] : undefined) || MEDIA_PATH_MAP[mediaType]
+			let url = `https://${hostname}${mediaPath}/${fileEncSha256B64}?auth=${auth}&token=${fileEncSha256B64}`
+			if (newsletter) {
+				url += '&server_thumb_gen=1'
+			}
 
 			let result: MediaUploadResult | undefined
 			try {
@@ -868,11 +892,13 @@ export const getWAUploadToServer = (
 
 				if (result?.url || result?.direct_path) {
 					urls = {
-						mediaUrl: result.url!,
+						mediaUrl: result.url || result.direct_path!,
 						directPath: result.direct_path!,
 						meta_hmac: result.meta_hmac,
 						fbid: result.fbid,
-						ts: result.ts
+						ts: result.ts,
+						thumbnailDirectPath: result.thumbnail_info?.thumbnail_direct_path,
+						thumbnailSha256: result.thumbnail_info?.thumbnail_sha256
 					}
 					break
 				} else {

src/Utils/messages.ts

@@ -41,9 +41,11 @@ import type { ILogger } from './logger'
 import {
 	downloadContentFromMessage,
 	encryptedStream,
+	extractImageThumb,
 	generateThumbnail,
 	getAudioDuration,
 	getAudioWaveform,
+	getStream,
 	getRawMediaUploadData,
 	type MediaDownloadOptions
 } from './messages-media'
@@ -194,10 +196,11 @@ export const prepareWAMessageMedia = async (
 		)
 
 		const fileSha256B64 = fileSha256.toString('base64')
-		const { mediaUrl, directPath } = await options.upload(filePath, {
+		const { directPath, thumbnailDirectPath, thumbnailSha256 } = await options.upload(filePath, {
 			fileEncSha256B64: fileSha256B64,
 			mediaType: mediaType,
-			timeoutMs: options.mediaUploadTimeoutMs
+			timeoutMs: options.mediaUploadTimeoutMs,
+			newsletter: true
 		})
 
 		await fs.unlink(filePath)
@@ -205,10 +208,12 @@ export const prepareWAMessageMedia = async (
 		const obj = WAProto.Message.fromObject({
 			// todo: add more support here
 			[`${mediaType}Message`]: (MessageTypeProto as any)[mediaType].fromObject({
-				url: mediaUrl,
+				// url intentionally omitted — newsletters use directPath only
 				directPath,
 				fileSha256,
 				fileLength,
+				thumbnailDirectPath,
+				thumbnailSha256: thumbnailSha256 ? Buffer.from(thumbnailSha256, 'base64') : undefined,
 				...uploadData,
 				media: undefined
 			})
@@ -234,7 +239,7 @@ export const prepareWAMessageMedia = async (
 	const requiresDurationComputation = mediaType === 'audio' && typeof uploadData.seconds === 'undefined'
 	const requiresThumbnailComputation =
 		(mediaType === 'image' || mediaType === 'video') && typeof uploadData['jpegThumbnail'] === 'undefined'
-	const requiresWaveformProcessing = mediaType === 'audio' && uploadData.ptt === true
+	const requiresWaveformProcessing = mediaType === 'audio' && uploadData.ptt === true && typeof uploadData.waveform === 'undefined'
 	const requiresAudioBackground = options.backgroundColor && mediaType === 'audio' && uploadData.ptt === true
 	const requiresOriginalForSomeProcessing = requiresDurationComputation || requiresThumbnailComputation
 	const { mediaKey, encFilePath, originalFilePath, fileEncSha256, fileSha256, fileLength } = await encryptedStream(
@@ -252,7 +257,9 @@ export const prepareWAMessageMedia = async (
 		(async () => {
 			const result = await options.upload(encFilePath, {
 				fileEncSha256B64,
-				mediaType,
+				// Use mediaTypeOverride for upload path (e.g. 'viewonce-image' → /o1/mms/image)
+				// Encryption already used the override via encryptedStream above
+				mediaType: options.mediaTypeOverride || mediaType,
 				timeoutMs: options.mediaUploadTimeoutMs
 			})
 			logger?.debug({ mediaType, cacheableKey }, 'uploaded media')
@@ -290,7 +297,7 @@ export const prepareWAMessageMedia = async (
 					logger?.debug('computed audio duration')
 				}
 
-				if (requiresWaveformProcessing) {
+				if (requiresWaveformProcessing && !uploadData.waveform) {
 					uploadData.waveform = await getAudioWaveform(filePath, logger)
 					logger?.debug('processed waveform')
 				}
@@ -633,6 +640,59 @@ export const generateCarouselMessage = async (
 		)
 	}
 
+	const recoverCarouselImageMetadata = async (
+		imageMessage: proto.Message.IImageMessage | null | undefined,
+		cardImage: WAMediaUpload,
+		cardTitle: string | undefined,
+		uploadOptions: MessageContentGenerationOptions
+	) => {
+		if (!imageMessage) {
+			return
+		}
+
+		const missingThumbnail = !imageMessage.jpegThumbnail
+		const missingWidth = !imageMessage.width
+		const missingHeight = !imageMessage.height
+		if (!missingThumbnail && !missingWidth && !missingHeight) {
+			return
+		}
+
+		try {
+			const { stream } = await getStream(cardImage, uploadOptions.options)
+			const { buffer, original } = await extractImageThumb(stream)
+
+			if (missingThumbnail) {
+				imageMessage.jpegThumbnail = buffer.toString('base64')
+			}
+
+			if (missingWidth && original.width) {
+				imageMessage.width = original.width
+			}
+
+			if (missingHeight && original.height) {
+				imageMessage.height = original.height
+			}
+
+			uploadOptions.logger?.info(
+				{
+					cardTitle,
+					recoveredThumbnail: !!imageMessage.jpegThumbnail,
+					width: imageMessage.width,
+					height: imageMessage.height
+				},
+				'[CAROUSEL] Recovered image metadata from source media'
+			)
+		} catch (error) {
+			uploadOptions.logger?.warn(
+				{
+					cardTitle,
+					trace: error instanceof Error ? error.stack : String(error)
+				},
+				'[CAROUSEL] Failed source-media thumbnail fallback'
+			)
+		}
+	}
+
 	// Map cards to the carousel format (processing media)
 	const carouselCards = await Promise.all(
 		cards.map(async card => {
@@ -648,6 +708,11 @@ export const generateCarouselMessage = async (
 			if (hasMedia && mediaOptions) {
 				if (card.image) {
 					const { imageMessage } = await prepareWAMessageMedia({ image: card.image }, mediaOptions)
+
+					// Mirror the working Pastorini-style result: every carousel image card should
+					// carry a jpegThumbnail and dimensions before it reaches the Web live renderer.
+					await recoverCarouselImageMetadata(imageMessage, card.image, card.title, mediaOptions)
+
 					// Validate image fields needed for WhatsApp rendering
 					if (imageMessage && !imageMessage.jpegThumbnail) {
 						mediaOptions.logger?.warn(
@@ -1239,7 +1304,8 @@ export const generateWAMessageContent = async (
 		}
 		// Pass options for media processing if cards have images/videos
 		const generated = await generateCarouselMessage(carouselOptions, options)
-		// Direct interactiveMessage — no viewOnceMessage wrapper, no root header/body/footer
+		// Frida capture shows interactiveMessage DIRECT (field 45) in DSM — no viewOnceMessage wrapper
+		// Testing without wrapper: biz node + quality_control already match Pastorini CDP stanza
 		m.interactiveMessage = generated.interactiveMessage
 		return m
 	}
@@ -1686,22 +1752,49 @@ export const generateWAMessageContent = async (
 			}
 		}
 	} else {
-		m = await prepareWAMessageMedia(message, options)
+		// For view-once media, upload to the one-time CDN (/o1/mms/*) instead of regular CDN
+		// WA Web view-once messages always have directPath: /o1/v/t24/... (not /v/t62.7118-24/...)
+		// Using the wrong CDN causes WA server to flag the account and breaks view-once capability
+		const isViewOnce = hasOptionalProperty(message, 'viewOnce') && !!message.viewOnce
+		const viewOnceTypeMap: Record<string, string> = {
+			image: 'viewonce-image',
+			video: 'viewonce-video',
+			audio: 'viewonce-audio'
+		}
+		const viewOnceOverride = isViewOnce
+			? viewOnceTypeMap[Object.keys(message).find(k => k in viewOnceTypeMap) || '']
+			: undefined
+		m = await prepareWAMessageMedia(message, {
+			...options,
+			mediaTypeOverride: (viewOnceOverride as any) || options.mediaTypeOverride
+		})
 	}
 
 	if (hasOptionalProperty(message, 'viewOnce') && !!message.viewOnce) {
-		m = { viewOnceMessage: { message: m } }
+		// Also set viewOnce=true on the inner media message (required by WA app to render as view-once)
+		if (m.imageMessage) m.imageMessage.viewOnce = true
+		else if (m.videoMessage) m.videoMessage.viewOnce = true
+		else if (m.audioMessage) m.audioMessage.viewOnce = true
+		// Use viewOnceMessageV2 (field 55) — modern WA clients use this wrapper
+		// viewOnceMessage (field 37) is the old format which WA server no longer accepts with view_once_write
+		m = { viewOnceMessageV2: { message: m } }
 	}
 
-	if (hasOptionalProperty(message, 'mentions') && message.mentions?.length) {
+	if (
+		(hasOptionalProperty(message, 'mentions') && message.mentions?.length) ||
+		(hasOptionalProperty(message, 'mentionAll') && message.mentionAll)
+	) {
 		const messageType = Object.keys(m)[0] as Extract<keyof proto.IMessage, MessageWithContextInfo>
 		if (messageType) {
 			const key = m[messageType]
-			if (key && 'contextInfo' in key && !!key.contextInfo) {
-				key.contextInfo.mentionedJid = message.mentions
-			} else if (key) {
-				key.contextInfo = {
-					mentionedJid: message.mentions
+			if (key && 'contextInfo' in key) {
+				key.contextInfo = key.contextInfo || {}
+				if (message.mentions?.length) {
+					key.contextInfo.mentionedJid = message.mentions
+				}
+
+				if (message.mentionAll) {
+					key.contextInfo.nonJidMentions = 1
 				}
 			}
 		}

src/Utils/process-message.ts

@@ -40,6 +40,7 @@ import { getKeyAuthor, toNumber } from './generics'
 import { downloadAndProcessHistorySyncNotification } from './history'
 import type { ILogger } from './logger'
 import { metrics, recordHistorySyncMessages } from './prometheus-metrics.js'
+import { buildMergedTcTokenIndexWrite } from './tc-token-utils'
 
 type ProcessMessageContext = {
 	shouldProcessHistoryMsg: boolean
@@ -62,6 +63,163 @@ const REAL_MSG_STUB_TYPES = new Set([
 
 const REAL_MSG_REQ_ME_STUB_TYPES = new Set([WAMessageStubType.GROUP_PARTICIPANT_ADD])
 
+/**
+ * Extract tctoken / tcTokenTimestamp / tcTokenSenderTimestamp from history-sync chats
+ * and persist them to the `tctoken` store. Mirrors WA Web's `bulkCreateOrMerge` pass
+ * over the chat table during history sync.
+ *
+ * Why this matters: when a user logs in on a new device, the multi-device history sync
+ * is the only way that device learns about tctokens issued/received on the original
+ * device. Without this pass, the new device sends 1:1 messages with no tctoken until
+ * the contact triggers a fresh notification — which surfaces as error 463 in production.
+ *
+ * Monotonicity: we only overwrite an existing entry if the incoming timestamp is
+ * STRICTLY newer (`incoming > existing`). Equal timestamps are skipped to avoid
+ * reverting senderTimestamp / realIssueTimestamp set by other layers (e.g. a
+ * reissue that fired between history-sync chunks).
+ *
+ * Index hygiene: every JID we write here is added to the persistent prune index
+ * (TC_TOKEN_INDEX_KEY) via buildMergedTcTokenIndexWrite, so the 24h prune sweep in
+ * messages-recv picks them up across sessions.
+ */
+/**
+ * Single-concurrency queue for `storeTcTokensFromHistorySync` calls.
+ *
+ * Why: the function does read-then-write merges (`keyStore.get('tctoken', ...)` →
+ * compute → `keyStore.set(...)`) which are NOT atomic at the store level. If two
+ * history-sync chunks invoke this concurrently (common during reconnect / QR
+ * scan), an older chunk that started first can `keyStore.set` AFTER a newer
+ * chunk, overwriting the newer entry — and worse, the merged `__index` write
+ * can drop JIDs the other chunk just added. Result: stale tcTokens / repeat 463
+ * sends until the next opportunistic refetch.
+ *
+ * Serialising via a chained Promise keeps the runs ordered while still freeing
+ * the calling `processMessage` to emit `messaging-history.set` immediately
+ * (the chain is fire-and-forget at the call site). Errors don't break the chain
+ * — each `catch` resets it to `Promise.resolve()` so a single failure can't
+ * stall future runs.
+ *
+ * The chain is module-scoped (one per Node process). Multiple Baileys instances
+ * sharing this module will serialise across instances too, but their writes
+ * target different keyStores so there's no correctness gain — only a tiny loss
+ * of inter-instance parallelism for tcToken syncs, which is acceptable given
+ * how rarely this runs vs. how rare cross-instance contention is.
+ */
+let historyTcTokenChain: Promise<void> = Promise.resolve()
+
+function scheduleHistoryTcTokenSync(
+	chats: Chat[],
+	signalRepository: SignalRepositoryWithLIDStore,
+	keyStore: SignalKeyStoreWithTransaction,
+	logger?: ILogger
+): void {
+	historyTcTokenChain = historyTcTokenChain
+		.catch(() => {
+			/* swallow prior error so chain stays alive */
+		})
+		.then(() => storeTcTokensFromHistorySync(chats, signalRepository, keyStore, logger))
+		.catch(err => {
+			logger?.warn({ err }, 'background tctoken history-sync persistence failed')
+		})
+}
+
+async function storeTcTokensFromHistorySync(
+	chats: Chat[],
+	signalRepository: SignalRepositoryWithLIDStore,
+	keyStore: SignalKeyStoreWithTransaction,
+	logger?: ILogger
+) {
+	// Cheap filter first — most chats in a sync chunk don't carry tcToken at all,
+	// and we want to avoid spinning up promises for them.
+	const tokenChats = chats.filter(chat => {
+		const ts = chat.tcTokenTimestamp ? toNumber(chat.tcTokenTimestamp) : 0
+		return !!chat.tcToken?.length && ts > 0
+	})
+
+	if (!tokenChats.length) {
+		return
+	}
+
+	// Pre-normalize so the rest of the pipeline is a synchronous join.
+	const normalized = tokenChats.map(chat => ({
+		chat,
+		ts: toNumber(chat.tcTokenTimestamp!),
+		jid: jidNormalizedUser(chat.id!)
+	}))
+
+	// BATCHED LID resolution. The previous shape called getLIDForPN once per
+	// chat (sequential await inside a for-of), which became the bottleneck
+	// during heavy history sync — every cold-cache hit was a DB round-trip,
+	// stalling messaging-history.set and spilling into the event-buffer.
+	// `getLIDsForPNs` resolves a deduped list in ONE batched query (and shares
+	// USync retry across PNs that miss cache), turning O(N) round-trips into 1.
+	//
+	// LID inputs (and `@hosted.lid`) skip the lookup entirely — they're already
+	// the storage form. Failures degrade gracefully: a missing mapping just
+	// stores under the original jid, matching `resolveTcTokenJid`'s null branch.
+	const pnsToResolve = [...new Set(normalized.filter(({ jid }) => !isLidUser(jid)).map(({ jid }) => jid))]
+	const pnToLid = new Map<string, string>()
+
+	if (pnsToResolve.length) {
+		try {
+			const mappings = await signalRepository.lidMapping.getLIDsForPNs(pnsToResolve)
+			// Flat loop (continue-on-skip) keeps max nesting depth at 4 for lint.
+			for (const { pn, lid } of mappings ?? []) {
+				if (!pn || !lid) continue
+				pnToLid.set(jidNormalizedUser(pn), lid)
+			}
+		} catch (err) {
+			// Per-chat fallback below (storageJid := jid). Don't abort the chunk —
+			// CodeRabbit noted that all-or-nothing rejection here would drop every
+			// tctoken in the batch AND prevent messaging-history.set from firing.
+			logger?.warn({ err }, 'storeTcTokensFromHistorySync: getLIDsForPNs batch failed; falling back to per-chat jid')
+		}
+	}
+
+	const candidates = normalized.map(({ chat, ts, jid }) => ({
+		storageJid: pnToLid.get(jid) ?? jid,
+		token: Buffer.from(chat.tcToken!),
+		ts,
+		senderTs: chat.tcTokenSenderTimestamp ? toNumber(chat.tcTokenSenderTimestamp) : undefined
+	}))
+
+	const jids = candidates.map(c => c.storageJid)
+	const existing = await keyStore.get('tctoken', jids)
+	const entries: Record<string, { token: Buffer; timestamp?: string; senderTimestamp?: number }> = {}
+
+	for (const c of candidates) {
+		// Same-batch dedup: when two chats resolve to the same storageJid (e.g. PN+LID
+		// aliases collapsing through resolveTcTokenJid, or duplicate chunks across
+		// retries), prefer the value already written by an earlier iteration so a
+		// lower-ts entry can't overwrite a higher-ts one captured from `existing`.
+		const existingEntry = entries[c.storageJid] ?? existing[c.storageJid]
+		const existingTs = existingEntry?.timestamp ? Number(existingEntry.timestamp) : 0
+		// Strict > guard: equal timestamps are skipped so we never clobber
+		// senderTimestamp written by other layers (issuance after send, etc).
+		if (existingTs > 0 && existingTs >= c.ts) {
+			continue
+		}
+
+		entries[c.storageJid] = {
+			...existingEntry,
+			token: c.token,
+			timestamp: String(c.ts),
+			...(c.senderTs !== undefined ? { senderTimestamp: c.senderTs } : {})
+		}
+	}
+
+	if (Object.keys(entries).length) {
+		logger?.debug({ count: Object.keys(entries).length }, 'storing tctokens from history sync')
+		try {
+			// Include updated __index so cross-session pruning picks these JIDs up.
+			const indexWrite = await buildMergedTcTokenIndexWrite(keyStore, Object.keys(entries))
+			await keyStore.set({ tctoken: { ...entries, ...indexWrite } })
+		} catch (err) {
+			logger?.warn({ err }, 'failed to store tctokens from history sync')
+		}
+	}
+}
+
 /** Cleans a received message to further processing */
 export const cleanMessage = (message: WAMessage, meId: string, meLid: string) => {
 	// ensure remoteJid and participant doesn't have device or agent in it
@@ -418,6 +576,12 @@ const processMessage = async (
 
 					// Emit LID-PN mappings from history sync
 					// This is how WhatsApp Web learns mappings for chats with non-contacts
+					//
+					// MUST run BEFORE storeTcTokensFromHistorySync — otherwise resolveTcTokenJid()
+					// can't resolve PN→LID for fresh-device chats (mapping cache is empty), tokens
+					// get persisted under PN keys, and the send path (which resolves to LID first)
+					// misses them — exactly the error 463 scenario this whole change is meant to
+					// prevent. Catches Codex P1 review on PR #386.
 					if (data.lidPnMappings?.length) {
 						logger?.debug({ count: data.lidPnMappings.length }, 'processing LID-PN mappings from history sync')
 						// eslint-disable-next-line max-depth
@@ -442,6 +606,29 @@ const processMessage = async (
 						}
 					}
 
+					// Persist tctokens carried by history-sync chats in BACKGROUND, serialised.
+					//
+					// Originally awaited (PR #386) to avoid 463 on first multi-device send, but in
+					// production this drained the event buffer per-chunk and added visible delivery
+					// latency (especially after restart / QR scan when many chunks arrived at once).
+					//
+					// `scheduleHistoryTcTokenSync` enqueues onto a single-concurrency promise chain
+					// (see definition above) — chunks persist sequentially in the order they were
+					// emitted, preserving timestamp monotonicity AND keeping the `__index` write
+					// safe from concurrent merge clobbers. The call returns immediately so the
+					// `messaging-history.set` emit is not blocked.
+					//
+					// TRADE-OFF: a listener that fires an outbound send IMMEDIATELY after the emit
+					// may race the still-pending persistence and get a 463 on that specific send.
+					// The existing 463 handler in messages-recv.ts triggers a getPrivacyTokens()
+					// refetch that auto-recovers within seconds. Net result is much better UX than
+					// per-chunk stalls.
+					//
+					// DO NOT add `await` back here without re-evaluating production latency, AND
+					// DO NOT call storeTcTokensFromHistorySync directly — it must go through the
+					// chain to preserve write ordering across overlapping chunks.
+					scheduleHistoryTcTokenSync(data.chats, signalRepository, keyStore, logger)
+
 					ev.emit('messaging-history.set', {
 						...data,
 						isLatest: histNotification.syncType !== proto.HistorySync.HistorySyncType.ON_DEMAND ? isLatest : undefined,
@@ -763,12 +950,19 @@ const processMessage = async (
 				id: jid,
 				author: message.key.participant!,
 				authorPn: message.key.participantAlt!,
+				authorUsername: message.key.participantUsername!,
 				participants,
 				action
 			})
 		const emitGroupUpdate = (update: Partial<GroupMetadata>) => {
 			ev.emit('groups.update', [
-				{ id: jid, ...update, author: message.key.participant ?? undefined, authorPn: message.key.participantAlt }
+				{
+					id: jid,
+					...update,
+					author: message.key.participant ?? undefined,
+					authorPn: message.key.participantAlt,
+					authorUsername: message.key.participantUsername
+				}
 			])
 		}
 
@@ -777,6 +971,7 @@ const processMessage = async (
 				id: jid,
 				author: message.key.participant!,
 				authorPn: message.key.participantAlt!,
+				authorUsername: message.key.participantUsername!,
 				participant: participant.lid,
 				participantPn: participant.pn,
 				action,

src/Utils/sync-action-utils.ts

@@ -46,6 +46,7 @@ export const processContactAction = (
 			{
 				id,
 				name: action.fullName || action.firstName || action.username || undefined,
+				username: action.username || undefined,
 				lid: lidJid || undefined,
 				phoneNumber
 			}

src/Utils/tc-token-utils.ts

@@ -1,12 +1,86 @@
 import type { SignalKeyStoreWithTransaction } from '../Types'
 import type { BinaryNode } from '../WABinary'
-import { getBinaryNodeChild, getBinaryNodeChildren, isLidUser, jidNormalizedUser } from '../WABinary'
+import {
+	getBinaryNodeChild,
+	getBinaryNodeChildren,
+	isAnyLidUser,
+	isAnyPnUser,
+	isHostedLidUser,
+	isHostedPnUser,
+	isJidMetaAI,
+	isLidUser,
+	isPnUser,
+	jidNormalizedUser
+} from '../WABinary'
 
 /** 7 days in seconds — matches WA Web AB prop tctoken_duration */
 const TC_TOKEN_BUCKET_DURATION = 604800
 /** 4 buckets → ~28-day rolling window — matches WA Web AB prop tctoken_num_buckets */
 const TC_TOKEN_NUM_BUCKETS = 4
 
+/**
+ * Sentinel key under the `tctoken` store holding a JSON array of tracked storage JIDs
+ * for cross-session pruning. Mirrors WA Web's CLEAN_TC_TOKENS index lookup.
+ *
+ * Exported so other modules (messages-recv, messages-send, process-message) reference
+ * the same constant. The fork previously inlined this string in messages-recv.ts;
+ * keep the value identical (`'__index'`) for backward compatibility with persisted state.
+ */
+export const TC_TOKEN_INDEX_KEY = '__index'
+
+// Phone-number pattern matching WABinary's isJidBot, applied against the user part so
+// the check is invariant to @c.us ↔ @s.whatsapp.net normalization.
+const BOT_PHONE_REGEX = /^1313555\d{4}$|^131655500\d{2}$/
+
+/**
+ * Mirrors WA Web's `Wid.isRegularUser()` (user ∧ ¬PSA ∧ ¬Bot). Used to gate tctoken
+ * storage against malformed notifications — WA Web filters server-side but we
+ * defend here for parity with `WAWebSetTcTokenChatAction.handleIncomingTcToken`.
+ * Works for both pre- and post-normalized JIDs (`@c.us` vs `@s.whatsapp.net`).
+ */
+export function isRegularUser(jid: string | undefined): boolean {
+	if (!jid) return false
+	const user = jid.split('@')[0] ?? ''
+	if (user === '0') return false // PSA
+	if (BOT_PHONE_REGEX.test(user)) return false // Bot by phone pattern
+	if (isJidMetaAI(jid)) return false // MetaAI (@bot server)
+	return !!(isPnUser(jid) || isLidUser(jid) || isHostedPnUser(jid) || isHostedLidUser(jid) || jid.endsWith('@c.us'))
+}
+
+/** Read the persisted tctoken JID index and return its entries (never contains the sentinel key itself). */
+export async function readTcTokenIndex(keys: SignalKeyStoreWithTransaction): Promise<string[]> {
+	const data = await keys.get('tctoken', [TC_TOKEN_INDEX_KEY])
+	const entry = data[TC_TOKEN_INDEX_KEY]
+	if (!entry?.token?.length) return []
+	try {
+		const parsed = JSON.parse(Buffer.from(entry.token).toString())
+		if (!Array.isArray(parsed)) return []
+		return parsed.filter((j): j is string => typeof j === 'string' && j.length > 0 && j !== TC_TOKEN_INDEX_KEY)
+	} catch {
+		return []
+	}
+}
+
+/**
+ * Build a SignalDataSet fragment that writes the merged index (persisted ∪ added)
+ * under the sentinel key. Lets callers update the index without clobbering writes
+ * made by other layers (history sync, concurrent sessions on the same store).
+ */
+export async function buildMergedTcTokenIndexWrite(
+	keys: SignalKeyStoreWithTransaction,
+	addedJids: Iterable<string>
+): Promise<{ [TC_TOKEN_INDEX_KEY]: { token: Buffer } }> {
+	const persisted = await readTcTokenIndex(keys)
+	const merged = new Set(persisted)
+	for (const jid of addedJids) {
+		if (jid && jid !== TC_TOKEN_INDEX_KEY) merged.add(jid)
+	}
+
+	return {
+		[TC_TOKEN_INDEX_KEY]: { token: Buffer.from(JSON.stringify([...merged])) }
+	}
+}
+
 /**
  * Check if a received token is expired using WA Web's rolling bucket algorithm.
  * Reference: WAWebTrustedContactsUtils.isTokenExpired
@@ -63,6 +137,43 @@ export async function resolveTcTokenJid(
 	return lid ?? normalized
 }
 
+/**
+ * Resolve target JID for issuing privacy token based on AB prop 14303
+ * (`lid_trusted_token_issue_to_lid`). When the prop is on, issuance goes to
+ * the LID; when off, it goes to the PN. Returns the original JID if no
+ * mapping is found in either direction.
+ *
+ * Normalizes the JID upfront and uses the `isAny*` helpers so callers can pass
+ * `@c.us`, `@s.whatsapp.net`, `@hosted`, `@hosted.lid`, `@lid` or device-specific
+ * forms — `LIDMappingStore.getLIDForPN` early-returns unless `isAnyPnUser`,
+ * so unnormalized inputs would silently bypass routing.
+ *
+ * Reference: WAWebTrustedContactsManager.issuePrivacyTokens
+ */
+export async function resolveIssuanceJid(
+	jid: string,
+	issueToLid: boolean,
+	getLIDForPN: (pn: string) => Promise<string | null>,
+	getPNForLID?: (lid: string) => Promise<string | null>
+): Promise<string> {
+	const normalized = jidNormalizedUser(jid)
+
+	if (issueToLid) {
+		if (isAnyLidUser(normalized)) return normalized
+		if (!isAnyPnUser(normalized)) return normalized
+		const lid = await getLIDForPN(normalized)
+		return lid ?? normalized
+	}
+
+	if (!isAnyLidUser(normalized)) return normalized
+	if (getPNForLID) {
+		const pn = await getPNForLID(normalized)
+		return pn ?? normalized
+	}
+
+	return normalized
+}
+
 type TcTokenParams = {
 	jid: string
 	baseContent?: BinaryNode[]
@@ -135,7 +246,13 @@ export async function storeTcTokensFromIqResult({
 			continue
 		}
 
-		const rawJid = jidNormalizedUser(tokenNode.attrs.jid || fallbackJid)
+		// In notifications, tokenNode.attrs.jid is OUR own device JID, not the sender's.
+		// Prefer fallbackJid (resolved from notification's `from` / `sender_lid`) so the
+		// token is stored under the peer's JID, never under self.
+		const rawJid = jidNormalizedUser(fallbackJid || tokenNode.attrs.jid)
+		// Defense against malformed notifications (PSA WID '0', bots, MetaAI). WA Web
+		// filters these server-side; we mirror Wid.isRegularUser() locally.
+		if (!isRegularUser(rawJid)) continue
 		const storageJid = await resolveTcTokenJid(rawJid, getLIDForPN)
 		const existingTcData = await keys.get('tctoken', [storageJid])
 		const existingEntry = existingTcData[storageJid]
@@ -154,18 +271,26 @@ export async function storeTcTokensFromIqResult({
 			continue
 		}
 
-		await keys.set({
-			tctoken: {
-				[storageJid]: {
-					...existingEntry,
-					token: Buffer.from(tokenNode.content),
-					timestamp: tokenNode.attrs.t,
-					// WABA Android: resets real_issue_timestamp to null when storing a new token
-					// (UPDATE wa_trusted_contacts_send SET real_issue_timestamp=null)
-					realIssueTimestamp: null
-				}
-			}
-		})
+		const tokenEntry = {
+			...existingEntry,
+			token: Buffer.from(tokenNode.content),
+			timestamp: tokenNode.attrs.t,
+			// WABA Android: resets real_issue_timestamp to null when storing a new token
+			// (UPDATE wa_trusted_contacts_send SET real_issue_timestamp=null)
+			realIssueTimestamp: null
+		}
+
+		// Store under resolved storageJid AND under fallbackJid (PN) for reliable lookup
+		// The read path may resolve to a different LID than the store path
+		const normalizedFallback = jidNormalizedUser(fallbackJid)
+		const keysToStore: Record<string, typeof tokenEntry | null> = {
+			[storageJid]: tokenEntry
+		}
+		if (normalizedFallback !== storageJid) {
+			keysToStore[normalizedFallback] = tokenEntry
+		}
+
+		await keys.set({ tctoken: keysToStore })
 		onNewJidStored?.(storageJid)
 	}
 }

src/Utils/validate-connection.ts

@@ -3,6 +3,7 @@ import { createHash } from 'crypto'
 import { proto } from '../../WAProto/index.js'
 import {
 	KEY_BUNDLE_TYPE,
+	PROTOCOL_MODE,
 	WA_ADV_ACCOUNT_SIG_PREFIX,
 	WA_ADV_DEVICE_SIG_PREFIX,
 	WA_ADV_HOSTED_ACCOUNT_SIG_PREFIX
@@ -14,24 +15,19 @@ import { encodeBigEndian } from './generics'
 import { createSignalIdentity } from './signal'
 
 const getUserAgent = (config: SocketConfig): proto.ClientPayload.IUserAgent => {
-	// Always use MACOS/Desktop identity for UserAgent — we connect via web
-	// protocol (WA\x06\x03) so the server expects a web-like UserAgent.
-	// Using SMB_ANDROID here causes pair code registration to fail with
-	// "não é possível conectar" even though the phone shows the confirmation.
-	// Android identity is only set in DeviceProps (registration node) which
-	// determines the display name in "Linked Devices".
 	return {
 		appVersion: {
 			primary: config.version[0],
 			secondary: config.version[1],
 			tertiary: config.version[2]
 		},
-		platform: proto.ClientPayload.UserAgent.Platform.MACOS,
+		platform: proto.ClientPayload.UserAgent.Platform.WEB,
 		releaseChannel: proto.ClientPayload.UserAgent.ReleaseChannel.RELEASE,
 		osVersion: '0.1',
 		device: 'Desktop',
 		osBuildNumber: '0.1',
 		localeLanguageIso6391: 'en',
+
 		mnc: '000',
 		mcc: '000',
 		localeCountryIso31661Alpha2: config.countryCode
@@ -60,20 +56,19 @@ const getClientPayload = (config: SocketConfig) => {
 	const payload: proto.IClientPayload = {
 		connectType: proto.ClientPayload.ConnectType.WIFI_UNKNOWN,
 		connectReason: proto.ClientPayload.ConnectReason.USER_ACTIVATED,
-		userAgent: getUserAgent(config),
-		webInfo: getWebInfo(config)
+		userAgent: getUserAgent(config)
+	}
+
+	// Native protocol (WAM\x05) does not use WebInfo — only web protocol does
+	if (PROTOCOL_MODE !== 'native') {
+		payload.webInfo = getWebInfo(config)
 	}
 
 	return payload
 }
 
 export const generateLoginNode = (userJid: string, config: SocketConfig): proto.IClientPayload => {
-	const decoded = jidDecode(userJid)
-	if (!decoded) {
-		throw new Boom('Invalid user JID', { statusCode: 400 })
-	}
-
-	const { user, device } = decoded
+	const { user, device } = jidDecode(userJid)!
 	const payload: proto.IClientPayload = {
 		...getClientPayload(config),
 		passive: true,
@@ -88,10 +83,6 @@ export const generateLoginNode = (userJid: string, config: SocketConfig): proto.
 
 const getPlatformType = (platform: string): proto.DeviceProps.PlatformType => {
 	const platformType = platform.toUpperCase()
-	if (platformType === 'ANDROID') {
-		return proto.DeviceProps.PlatformType.ANDROID_PHONE
-	}
-
 	return (
 		proto.DeviceProps.PlatformType[platformType as keyof typeof proto.DeviceProps.PlatformType] ||
 		proto.DeviceProps.PlatformType.CHROME
@@ -166,9 +157,6 @@ export const configureSuccessfulPairing = (
 	}: Pick<AuthenticationCreds, 'advSecretKey' | 'signedIdentityKey' | 'signalIdentities'>
 ) => {
 	const msgId = stanza.attrs.id
-	if (!msgId) {
-		throw new Boom('Missing message ID', { statusCode: 400 })
-	}
 
 	const pairSuccessNode = getBinaryNodeChild(stanza, 'pair-success')
 
@@ -184,51 +172,42 @@ export const configureSuccessfulPairing = (
 	const bizName = businessNode?.attrs.name
 	const jid = deviceNode.attrs.jid
 	const lid = deviceNode.attrs.lid
-	if (!jid || !lid) {
-		throw new Boom('Missing JID or LID in device node', { statusCode: 400 })
-	}
 
 	const { details, hmac, accountType } = proto.ADVSignedDeviceIdentityHMAC.decode(deviceIdentityNode.content as Buffer)
-	if (!details || !hmac) {
-		throw new Boom('Missing ADV signature fields', { statusCode: 400 })
-	}
 
 	let hmacPrefix = Buffer.from([])
 	if (accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED) {
 		hmacPrefix = WA_ADV_HOSTED_ACCOUNT_SIG_PREFIX
 	}
 
-	const advSign = hmacSign(Buffer.concat([hmacPrefix, details]), Buffer.from(advSecretKey, 'base64'))
-	if (Buffer.compare(hmac, advSign) !== 0) {
+	const advSign = hmacSign(Buffer.concat([hmacPrefix, details!]), Buffer.from(advSecretKey, 'base64'))
+	if (Buffer.compare(hmac!, advSign) !== 0) {
 		throw new Boom('Invalid account signature')
 	}
 
-	const account = proto.ADVSignedDeviceIdentity.decode(details)
+	const account = proto.ADVSignedDeviceIdentity.decode(details!)
 	const { accountSignatureKey, accountSignature, details: deviceDetails } = account
-	if (!accountSignatureKey || !accountSignature || !deviceDetails) {
-		throw new Boom('Missing ADV account fields', { statusCode: 400 })
-	}
 
-	const deviceIdentity = proto.ADVDeviceIdentity.decode(deviceDetails)
+	const deviceIdentity = proto.ADVDeviceIdentity.decode(deviceDetails!)
 
 	const accountSignaturePrefix =
 		deviceIdentity.deviceType === proto.ADVEncryptionType.HOSTED
 			? WA_ADV_HOSTED_ACCOUNT_SIG_PREFIX
 			: WA_ADV_ACCOUNT_SIG_PREFIX
-	const accountMsg = Buffer.concat([accountSignaturePrefix, deviceDetails, signedIdentityKey.public])
-	if (!Curve.verify(accountSignatureKey, accountMsg, accountSignature)) {
+	const accountMsg = Buffer.concat([accountSignaturePrefix, deviceDetails!, signedIdentityKey.public])
+	if (!Curve.verify(accountSignatureKey!, accountMsg, accountSignature!)) {
 		throw new Boom('Failed to verify account signature')
 	}
 
 	const deviceMsg = Buffer.concat([
 		WA_ADV_DEVICE_SIG_PREFIX,
-		deviceDetails,
+		deviceDetails!,
 		signedIdentityKey.public,
-		accountSignatureKey
+		accountSignatureKey!
 	])
 	account.deviceSignature = Curve.sign(signedIdentityKey.private, deviceMsg)
 
-	const identity = createSignalIdentity(lid, accountSignatureKey)
+	const identity = createSignalIdentity(lid!, accountSignatureKey!)
 	const accountEnc = encodeSignedDeviceIdentity(account, false)
 
 	const reply: BinaryNode = {
@@ -236,7 +215,7 @@ export const configureSuccessfulPairing = (
 		attrs: {
 			to: S_WHATSAPP_NET,
 			type: 'result',
-			id: msgId
+			id: msgId!
 		},
 		content: [
 			{
@@ -255,7 +234,7 @@ export const configureSuccessfulPairing = (
 
 	const authUpdate: Partial<AuthenticationCreds> = {
 		account,
-		me: { id: jid, name: bizName, lid },
+		me: { id: jid!, name: bizName, lid },
 		signalIdentities: [...(signalIdentities || []), identity],
 		platform: platformNode?.attrs.name
 	}

src/WAUSync/Protocols/USyncContactProtocol.ts

@@ -13,11 +13,37 @@ export class USyncContactProtocol implements USyncQueryProtocol {
 	}
 
 	getUserElement(user: USyncUser): BinaryNode {
-		//TODO: Implement type / username fields (not yet supported)
+		if (user.phone) {
+			return {
+				tag: 'contact',
+				attrs: {},
+				content: user.phone
+			}
+		}
+
+		if (user.username) {
+			return {
+				tag: 'contact',
+				attrs: {
+					username: user.username,
+					...(user.usernameKey ? { pin: user.usernameKey } : {}),
+					...(user.lid ? { lid: user.lid } : {})
+				}
+			}
+		}
+
+		if (user.type) {
+			return {
+				tag: 'contact',
+				attrs: {
+					type: user.type
+				}
+			}
+		}
+
 		return {
 			tag: 'contact',
-			attrs: {},
-			content: user.phone
+			attrs: {}
 		}
 	}
 

src/WAUSync/Protocols/USyncUsernameProtocol.ts

@@ -0,0 +1,28 @@
+import type { USyncQueryProtocol } from '../../Types/USync'
+import { assertNodeErrorFree, type BinaryNode } from '../../WABinary'
+import { USyncUser } from '../USyncUser'
+
+export class USyncUsernameProtocol implements USyncQueryProtocol {
+	name = 'username'
+
+	getQueryElement(): BinaryNode {
+		return {
+			tag: 'username',
+			attrs: {}
+		}
+	}
+
+	getUserElement(user: USyncUser): BinaryNode | null {
+		void user
+		return null
+	}
+
+	parser(node: BinaryNode): string | null {
+		if (node.tag === 'username') {
+			assertNodeErrorFree(node)
+			return typeof node.content === 'string' ? node.content : null
+		}
+
+		return null
+	}
+}

src/WAUSync/Protocols/index.ts

@@ -2,3 +2,4 @@ export * from './USyncDeviceProtocol'
 export * from './USyncContactProtocol'
 export * from './USyncStatusProtocol'
 export * from './USyncDisappearingModeProtocol'
+export * from './USyncUsernameProtocol'

src/WAUSync/USyncQuery.ts

@@ -6,11 +6,12 @@ import {
 	USyncContactProtocol,
 	USyncDeviceProtocol,
 	USyncDisappearingModeProtocol,
-	USyncStatusProtocol
+	USyncStatusProtocol,
+	USyncUsernameProtocol
 } from './Protocols'
 import { USyncUser } from './USyncUser'
 
-export type USyncQueryResultList = { [protocol: string]: unknown; id: string }
+export type USyncQueryResultList = { [protocol: string]: unknown; id: string; rawId?: number }
 
 export type USyncQueryResult = {
 	list: USyncQueryResultList[]
@@ -68,10 +69,8 @@ export class USyncQuery {
 		//TODO: see if there are any errors in the result node
 		//const resultNode = getBinaryNodeChild(usyncNode, 'result')
 
-		const listNode = usyncNode ? getBinaryNodeChild(usyncNode, 'list') : undefined
-
-		if (listNode?.content && Array.isArray(listNode.content)) {
-			queryResult.list = listNode.content.reduce((acc: USyncQueryResultList[], node) => {
+		const parseNodeList = (content: BinaryNode[]): USyncQueryResultList[] =>
+			content.reduce((acc: USyncQueryResultList[], node) => {
 				const id = node?.attrs.jid
 				if (id) {
 					const data = Array.isArray(node?.content)
@@ -89,15 +88,24 @@ export class USyncQuery {
 									.filter(([, b]) => b !== null) as [string, unknown][]
 							)
 						: {}
-					acc.push({ ...data, id })
+					const rawIdAttr = node?.attrs?.['raw_id']
+					const rawId = rawIdAttr !== undefined ? Number(rawIdAttr) : undefined
+					acc.push({ ...data, id, ...(rawId !== undefined && !isNaN(rawId) ? { rawId } : {}) })
 				}
 
 				return acc
 			}, [])
+
+		const listNode = usyncNode ? getBinaryNodeChild(usyncNode, 'list') : undefined
+		if (listNode?.content && Array.isArray(listNode.content)) {
+			queryResult.list = parseNodeList(listNode.content)
+		}
+
+		const sideListNode = usyncNode ? getBinaryNodeChild(usyncNode, 'side_list') : undefined
+		if (sideListNode?.content && Array.isArray(sideListNode.content)) {
+			queryResult.sideList = parseNodeList(sideListNode.content)
 		}
 
-		//TODO: implement side list
-		//const sideListNode = getBinaryNodeChild(usyncNode, 'side_list')
 		return queryResult
 	}
 
@@ -130,4 +138,9 @@ export class USyncQuery {
 		this.protocols.push(new USyncLIDProtocol())
 		return this
 	}
+
+	withUsernameProtocol() {
+		this.protocols.push(new USyncUsernameProtocol())
+		return this
+	}
 }

src/WAUSync/USyncUser.ts

@@ -2,6 +2,8 @@ export class USyncUser {
 	id?: string
 	lid?: string
 	phone?: string
+	username?: string
+	usernameKey?: string
 	type?: string
 	personaId?: string
 
@@ -20,6 +22,16 @@ export class USyncUser {
 		return this
 	}
 
+	withUsername(username: string) {
+		this.username = username
+		return this
+	}
+
+	withUsernameKey(usernameKey: string) {
+		this.usernameKey = usernameKey
+		return this
+	}
+
 	withType(type: string) {
 		this.type = type
 		return this

src/__tests__/Socket/identity-change-handling.test.ts

@@ -297,4 +297,52 @@ describe('Identity Change Handling', () => {
 			expect(result.device).toBe(5)
 		})
 	})
+
+	describe('onBeforeSessionRefresh callback', () => {
+		it('fires before assertSessions when a session refresh is about to run', async () => {
+			mockValidateSession.mockResolvedValue({ exists: true })
+			const callOrder: string[] = []
+			mockAssertSessions.mockImplementation(async () => {
+				callOrder.push('assertSessions')
+				return true
+			})
+			const onBeforeSessionRefresh = jest.fn((jid: string) => {
+				callOrder.push(`before:${jid}`)
+			})
+
+			const node = createIdentityChangeNode('user@s.whatsapp.net')
+			const ctx = { ...createContext(), onBeforeSessionRefresh }
+			const result = await handleIdentityChange(node, ctx)
+
+			expect(result.action).toBe('session_refreshed')
+			expect(callOrder).toEqual(['before:user@s.whatsapp.net', 'assertSessions'])
+		})
+
+		it('does not fire when the refresh is skipped (no_identity / offline / self)', async () => {
+			const onBeforeSessionRefresh = jest.fn()
+
+			// no identity node
+			const noIdentityNode: BinaryNode = {
+				tag: 'notification',
+				attrs: { from: 'a@s.whatsapp.net', type: 'encrypt' },
+				content: []
+			}
+			await handleIdentityChange(noIdentityNode, { ...createContext(), onBeforeSessionRefresh })
+
+			// offline notification
+			mockValidateSession.mockResolvedValue({ exists: true })
+			await handleIdentityChange(createIdentityChangeNode('b@s.whatsapp.net', '0'), {
+				...createContext(),
+				onBeforeSessionRefresh
+			})
+
+			// self primary
+			await handleIdentityChange(createIdentityChangeNode(mockMeId!), {
+				...createContext(),
+				onBeforeSessionRefresh
+			})
+
+			expect(onBeforeSessionRefresh).not.toHaveBeenCalled()
+		})
+	})
 })

src/__tests__/Utils/tc-token.test.ts

@@ -1,7 +1,17 @@
 import { jest } from '@jest/globals'
 import { DisconnectReason, type SignalKeyStoreWithTransaction } from '../../Types'
 import { getErrorCodeFromStreamError, SERVER_ERROR_CODES } from '../../Utils'
-import { buildTcTokenFromJid, isTcTokenExpired, shouldSendNewTcToken } from '../../Utils/tc-token-utils'
+import {
+	buildMergedTcTokenIndexWrite,
+	buildTcTokenFromJid,
+	isRegularUser,
+	isTcTokenExpired,
+	readTcTokenIndex,
+	resolveIssuanceJid,
+	shouldSendNewTcToken,
+	storeTcTokensFromIqResult,
+	TC_TOKEN_INDEX_KEY
+} from '../../Utils/tc-token-utils'
 import type { BinaryNode } from '../../WABinary'
 
 /** 7 days in seconds — matches WA Web tctoken_duration */
@@ -848,3 +858,340 @@ describe('tctoken integration scenarios', () => {
 		})
 	})
 })
+
+// ─── isRegularUser (PSA / bot / MetaAI gating) ─────────────────────────
+
+describe('isRegularUser', () => {
+	it('rejects undefined / empty', () => {
+		expect(isRegularUser(undefined)).toBe(false)
+		expect(isRegularUser('')).toBe(false)
+	})
+
+	it('rejects PSA WID (user "0")', () => {
+		expect(isRegularUser('0@s.whatsapp.net')).toBe(false)
+		expect(isRegularUser('0@c.us')).toBe(false)
+	})
+
+	it('rejects bot phone numbers (1313555XXXX, 131655500XX)', () => {
+		expect(isRegularUser('13135550000@s.whatsapp.net')).toBe(false)
+		expect(isRegularUser('13135559999@s.whatsapp.net')).toBe(false)
+		// /^131655500\d{2}$/ — 11 digits: 131655500 + 2 trailing
+		expect(isRegularUser('13165550000@s.whatsapp.net')).toBe(false)
+		expect(isRegularUser('13165550099@s.whatsapp.net')).toBe(false)
+	})
+
+	it('rejects MetaAI (@bot server)', () => {
+		expect(isRegularUser('foo@bot')).toBe(false)
+	})
+
+	it('accepts regular PN users (@s.whatsapp.net, @c.us)', () => {
+		expect(isRegularUser('5511999999999@s.whatsapp.net')).toBe(true)
+		expect(isRegularUser('5511999999999@c.us')).toBe(true)
+	})
+
+	it('accepts LID users', () => {
+		expect(isRegularUser('123456@lid')).toBe(true)
+	})
+
+	it('accepts hosted PN/LID users', () => {
+		expect(isRegularUser('5511999999999@hosted')).toBe(true)
+		expect(isRegularUser('123456@hosted.lid')).toBe(true)
+	})
+})
+
+// ─── resolveIssuanceJid (AB prop 14303 routing) ────────────────────────
+
+describe('resolveIssuanceJid', () => {
+	const PN = '5511999999999@s.whatsapp.net'
+	const LID = '123456@lid'
+	const PN_NO_LID = '5511888888888@s.whatsapp.net'
+	const LID_NO_PN = '999999@lid'
+
+	const getLIDForPN = jest.fn<(pn: string) => Promise<string | null>>(async (pn: string) => {
+		if (pn === PN) return LID
+		return null
+	})
+	const getPNForLID = jest.fn<(lid: string) => Promise<string | null>>(async (lid: string) => {
+		if (lid === LID) return PN
+		return null
+	})
+
+	beforeEach(() => {
+		getLIDForPN.mockClear()
+		getPNForLID.mockClear()
+	})
+
+	describe('AB prop 14303 ON (issueToLid=true)', () => {
+		it('returns LID unchanged when input is LID', async () => {
+			expect(await resolveIssuanceJid(LID, true, getLIDForPN, getPNForLID)).toBe(LID)
+			expect(getLIDForPN).not.toHaveBeenCalled()
+		})
+
+		it('resolves PN to LID via lidMapping', async () => {
+			expect(await resolveIssuanceJid(PN, true, getLIDForPN, getPNForLID)).toBe(LID)
+			expect(getLIDForPN).toHaveBeenCalledWith(PN)
+		})
+
+		it('falls back to original PN when no LID mapping exists', async () => {
+			expect(await resolveIssuanceJid(PN_NO_LID, true, getLIDForPN, getPNForLID)).toBe(PN_NO_LID)
+		})
+	})
+
+	describe('AB prop 14303 OFF (issueToLid=false)', () => {
+		it('returns PN unchanged when input is PN', async () => {
+			expect(await resolveIssuanceJid(PN, false, getLIDForPN, getPNForLID)).toBe(PN)
+			expect(getPNForLID).not.toHaveBeenCalled()
+		})
+
+		it('resolves LID to PN via lidMapping', async () => {
+			expect(await resolveIssuanceJid(LID, false, getLIDForPN, getPNForLID)).toBe(PN)
+			expect(getPNForLID).toHaveBeenCalledWith(LID)
+		})
+
+		it('falls back to original LID when no PN mapping exists', async () => {
+			expect(await resolveIssuanceJid(LID_NO_PN, false, getLIDForPN, getPNForLID)).toBe(LID_NO_PN)
+		})
+
+		it('returns LID unchanged when getPNForLID is omitted', async () => {
+			expect(await resolveIssuanceJid(LID, false, getLIDForPN)).toBe(LID)
+		})
+	})
+
+	describe('JID normalization (handles @c.us and hosted forms)', () => {
+		const PN_CUS = '5511999999999@c.us'
+		const PN_NORMALIZED = '5511999999999@s.whatsapp.net'
+		const HOSTED_LID = '999999@hosted.lid'
+
+		it('normalizes @c.us before resolving (issueToLid=true)', async () => {
+			const fn = jest.fn<(pn: string) => Promise<string | null>>(async (pn: string) => {
+				if (pn === PN_NORMALIZED) return LID
+				return null
+			})
+			const result = await resolveIssuanceJid(PN_CUS, true, fn, getPNForLID)
+			expect(result).toBe(LID)
+			// Mapping store called with NORMALIZED form
+			expect(fn).toHaveBeenCalledWith(PN_NORMALIZED)
+		})
+
+		it('treats hosted LID as LID input (issueToLid=true returns it unchanged)', async () => {
+			expect(await resolveIssuanceJid(HOSTED_LID, true, getLIDForPN, getPNForLID)).toBe(HOSTED_LID)
+			expect(getLIDForPN).not.toHaveBeenCalled()
+		})
+
+		it('treats hosted LID as LID input (issueToLid=false converts via getPNForLID)', async () => {
+			const fn = jest.fn<(lid: string) => Promise<string | null>>(async () => null)
+			await resolveIssuanceJid(HOSTED_LID, false, getLIDForPN, fn)
+			expect(fn).toHaveBeenCalledWith(HOSTED_LID)
+		})
+	})
+})
+
+// ─── readTcTokenIndex / buildMergedTcTokenIndexWrite ───────────────────
+
+describe('tctoken cross-session prune index', () => {
+	it('exports the sentinel key as "__index"', () => {
+		// Persisted state compatibility — tests freeze the value to catch unintended renames.
+		expect(TC_TOKEN_INDEX_KEY).toBe('__index')
+	})
+
+	describe('readTcTokenIndex', () => {
+		it('returns [] when the index entry is absent', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({})
+			expect(await readTcTokenIndex(keys)).toEqual([])
+		})
+
+		it('returns [] when the index token buffer is empty', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({ [TC_TOKEN_INDEX_KEY]: { token: Buffer.alloc(0) } })
+			expect(await readTcTokenIndex(keys)).toEqual([])
+		})
+
+		it('returns [] when the JSON payload is corrupted', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({ [TC_TOKEN_INDEX_KEY]: { token: Buffer.from('not-json') } })
+			expect(await readTcTokenIndex(keys)).toEqual([])
+		})
+
+		it('returns [] when the JSON payload is not an array', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({ [TC_TOKEN_INDEX_KEY]: { token: Buffer.from('{"a":1}') } })
+			expect(await readTcTokenIndex(keys)).toEqual([])
+		})
+
+		it('returns the persisted JIDs', async () => {
+			const keys = createMockKeys()
+			const stored = ['a@lid', 'b@lid', 'c@s.whatsapp.net']
+			;(keys.get as any).mockResolvedValue({
+				[TC_TOKEN_INDEX_KEY]: { token: Buffer.from(JSON.stringify(stored)) }
+			})
+			expect(await readTcTokenIndex(keys)).toEqual(stored)
+		})
+
+		it('filters out the sentinel key itself, empty strings, and non-strings', async () => {
+			const keys = createMockKeys()
+			const stored = ['a@lid', '', TC_TOKEN_INDEX_KEY, 42, null, 'b@lid']
+			;(keys.get as any).mockResolvedValue({
+				[TC_TOKEN_INDEX_KEY]: { token: Buffer.from(JSON.stringify(stored)) }
+			})
+			expect(await readTcTokenIndex(keys)).toEqual(['a@lid', 'b@lid'])
+		})
+	})
+
+	describe('buildMergedTcTokenIndexWrite', () => {
+		it('merges added JIDs with the persisted set (de-duplicated)', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({
+				[TC_TOKEN_INDEX_KEY]: { token: Buffer.from(JSON.stringify(['a@lid', 'b@lid'])) }
+			})
+			const write = await buildMergedTcTokenIndexWrite(keys, ['b@lid', 'c@lid'])
+			const decoded = JSON.parse(write[TC_TOKEN_INDEX_KEY].token.toString()) as string[]
+			expect(decoded.sort()).toEqual(['a@lid', 'b@lid', 'c@lid'])
+		})
+
+		it('drops the sentinel key from the added set', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({})
+			const write = await buildMergedTcTokenIndexWrite(keys, [TC_TOKEN_INDEX_KEY, 'a@lid'])
+			const decoded = JSON.parse(write[TC_TOKEN_INDEX_KEY].token.toString()) as string[]
+			expect(decoded).toEqual(['a@lid'])
+		})
+
+		it('handles empty inputs', async () => {
+			const keys = createMockKeys()
+			;(keys.get as any).mockResolvedValue({})
+			const write = await buildMergedTcTokenIndexWrite(keys, [])
+			const decoded = JSON.parse(write[TC_TOKEN_INDEX_KEY].token.toString()) as string[]
+			expect(decoded).toEqual([])
+		})
+	})
+})
+
+// ─── storeTcTokensFromIqResult — isRegularUser gating + monotonicity ───
+
+describe('storeTcTokensFromIqResult — gating and monotonicity', () => {
+	const PEER_PN = '5511999999999@s.whatsapp.net'
+	const PEER_LID = '123456@lid'
+
+	const getLIDForPN = jest.fn<(pn: string) => Promise<string | null>>(async (pn: string) => {
+		if (pn === PEER_PN) return PEER_LID
+		return null
+	})
+
+	beforeEach(() => {
+		getLIDForPN.mockClear()
+	})
+
+	const buildIqResult = (jid: string, tokenBytes: Uint8Array, t: string): BinaryNode => ({
+		tag: 'iq',
+		attrs: {},
+		content: [
+			{
+				tag: 'tokens',
+				attrs: {},
+				content: [
+					{
+						tag: 'token',
+						attrs: { jid, type: 'trusted_contact', t },
+						content: tokenBytes
+					}
+				]
+			}
+		]
+	})
+
+	it('skips PSA WID (jid="0") even if returned in tokens block', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({})
+		await storeTcTokensFromIqResult({
+			result: buildIqResult('myDeviceJid@s.whatsapp.net', Buffer.from([0x01, 0x02]), '1700000000'),
+			fallbackJid: '0@s.whatsapp.net',
+			keys,
+			getLIDForPN
+		})
+		expect(keys.set).not.toHaveBeenCalled()
+	})
+
+	it('skips bot phone numbers', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({})
+		await storeTcTokensFromIqResult({
+			result: buildIqResult('myDeviceJid@s.whatsapp.net', Buffer.from([0x01, 0x02]), '1700000000'),
+			fallbackJid: '13135550000@s.whatsapp.net',
+			keys,
+			getLIDForPN
+		})
+		expect(keys.set).not.toHaveBeenCalled()
+	})
+
+	it('skips MetaAI (@bot server)', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({})
+		await storeTcTokensFromIqResult({
+			result: buildIqResult('myDeviceJid@s.whatsapp.net', Buffer.from([0x01, 0x02]), '1700000000'),
+			fallbackJid: 'meta-ai@bot',
+			keys,
+			getLIDForPN
+		})
+		expect(keys.set).not.toHaveBeenCalled()
+	})
+
+	it('uses fallbackJid (NOT the token node jid which is own device) as storage source', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({})
+		const onNewJidStored = jest.fn()
+		await storeTcTokensFromIqResult({
+			result: buildIqResult('myDeviceJid:1@s.whatsapp.net', Buffer.from([0xaa, 0xbb]), '1700000000'),
+			fallbackJid: PEER_PN,
+			keys,
+			getLIDForPN,
+			onNewJidStored
+		})
+		expect(keys.set).toHaveBeenCalled()
+		const setArgs = (keys.set.mock.calls[0]?.[0] as { tctoken: Record<string, unknown> }).tctoken
+		expect(Object.keys(setArgs)).toContain(PEER_LID)
+		expect(onNewJidStored).toHaveBeenCalledWith(PEER_LID)
+	})
+
+	it('skips when incoming timestamp is older than existing (monotonicity)', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({
+			[PEER_LID]: { token: Buffer.from([0x99]), timestamp: '1800000000' }
+		})
+		await storeTcTokensFromIqResult({
+			result: buildIqResult('myDeviceJid@s.whatsapp.net', Buffer.from([0xaa]), '1700000000'),
+			fallbackJid: PEER_PN,
+			keys,
+			getLIDForPN
+		})
+		expect(keys.set).not.toHaveBeenCalled()
+	})
+
+	it('skips timestamp-less tokens (would be immediately expired)', async () => {
+		const keys = createMockKeys()
+		;(keys.get as any).mockResolvedValue({})
+		await storeTcTokensFromIqResult({
+			result: {
+				tag: 'iq',
+				attrs: {},
+				content: [
+					{
+						tag: 'tokens',
+						attrs: {},
+						content: [
+							{
+								tag: 'token',
+								attrs: { jid: 'd@s.whatsapp.net', type: 'trusted_contact' },
+								content: Buffer.from([0x01])
+							}
+						]
+					}
+				]
+			},
+			fallbackJid: PEER_PN,
+			keys,
+			getLIDForPN
+		})
+		expect(keys.set).not.toHaveBeenCalled()
+	})
+})

src/__tests__/bigint-validation.test.ts

@@ -0,0 +1,209 @@
+import Long from 'long'
+import $protobuf from 'protobufjs/minimal.js'
+
+const $util = $protobuf.util
+
+// proto implementation
+function longToStringOld(value: any, unsigned?: boolean): string {
+	if (typeof value === 'string') return value
+	if (typeof value === 'number') return String(value)
+	if (!$util.Long) return String(value)
+	const normalized = ($util.Long as any).fromValue(value)
+	const prepared =
+		unsigned && normalized && typeof normalized.toUnsigned === 'function' ? normalized.toUnsigned() : normalized
+	return prepared.toString()
+}
+
+// bigint implementation
+function longToStringNew(value: any, unsigned?: boolean): string {
+	if (typeof value === 'string') return value
+	if (typeof value === 'number') return String(value)
+	if (value && typeof value.low === 'number' && typeof value.high === 'number') {
+		const high = value.high | 0
+		const lo = BigInt(value.low >>> 0)
+		const hi = BigInt(value.high >>> 0)
+		const combined = (hi << 32n) | lo
+		if (!unsigned && high < 0) {
+			return (combined - (1n << 64n)).toString()
+		}
+
+		return combined.toString()
+	}
+
+	return String(value)
+}
+
+function longToNumberOld(value: any, unsigned?: boolean): number {
+	if (typeof value === 'number') return value
+	if (typeof value === 'string') return Number(value)
+	if (!$util.Long) return Number(value)
+	const normalized = ($util.Long as any).fromValue(value)
+	const prepared =
+		unsigned && normalized && typeof normalized.toUnsigned === 'function'
+			? normalized.toUnsigned()
+			: typeof normalized.toSigned === 'function'
+				? normalized.toSigned()
+				: normalized
+	return prepared.toNumber()
+}
+
+function longToNumberNew(value: any, unsigned?: boolean): number {
+	if (typeof value === 'number') return value
+	if (typeof value === 'string') return Number(value)
+	if (value && typeof value.low === 'number' && typeof value.high === 'number') {
+		const high = value.high | 0
+		const lo = BigInt(value.low >>> 0)
+		const hi = BigInt(value.high >>> 0)
+		const combined = (hi << 32n) | lo
+		if (!unsigned && high < 0) {
+			return Number(combined - (1n << 64n))
+		}
+
+		return Number(combined)
+	}
+
+	return Number(value)
+}
+
+describe('BigInt vs Long equivalence validation', () => {
+	// Test cases: [description, Long value, unsigned flag]
+	const testCases: [string, Long, boolean][] = [
+		// Basic values
+		['zero unsigned', Long.fromNumber(0, true), true],
+		['zero signed', Long.fromNumber(0, false), false],
+		['one unsigned', Long.fromNumber(1, true), true],
+		['one signed', Long.fromNumber(1, false), false],
+
+		// Typical WhatsApp timestamps (seconds since epoch)
+		['timestamp 2023', Long.fromNumber(1700000000, true), true],
+		['timestamp 2025', Long.fromNumber(1750000000, true), true],
+		['timestamp as signed', Long.fromNumber(1700000000, false), false],
+
+		// File sizes
+		['small file', Long.fromNumber(1024, true), true],
+		['medium file 10MB', Long.fromNumber(10485760, true), true],
+		['large file 2GB', Long.fromNumber(2147483648, true), true],
+
+		// Boundary values - 32-bit
+		['max int32', Long.fromNumber(2147483647, false), false],
+		['min int32', Long.fromNumber(-2147483648, false), false],
+		['max uint32', Long.fromNumber(4294967295, true), true],
+
+		// Around MAX_SAFE_INTEGER
+		['MAX_SAFE_INTEGER', Long.fromString('9007199254740991', false), false],
+		['MAX_SAFE_INTEGER + 1', Long.fromString('9007199254740992', false), false],
+		['MAX_SAFE_INTEGER unsigned', Long.fromString('9007199254740991', true), true],
+
+		// Large unsigned values
+		['large unsigned', Long.fromString('9999999999999999999', true), true],
+		['max uint64', Long.fromString('18446744073709551615', true), true],
+		['max uint64 - 1', Long.fromString('18446744073709551614', true), true],
+
+		// Signed negative values
+		['negative one', Long.fromNumber(-1, false), false],
+		['negative small', Long.fromNumber(-100, false), false],
+		['negative large', Long.fromNumber(-2147483648, false), false],
+		['min int64', Long.fromString('-9223372036854775808', false), false],
+		['max int64', Long.fromString('9223372036854775807', false), false],
+		['-1 as signed Long', Long.fromBits(-1, -1, false), false],
+
+		// Tricky bit patterns
+		['high=1, low=0', Long.fromBits(0, 1, true), true],
+		['high=0, low=-1 (0xFFFFFFFF)', Long.fromBits(-1, 0, true), true],
+		['high=-1, low=-1 unsigned (max uint64)', Long.fromBits(-1, -1, true), true],
+		['high=0x7FFFFFFF, low=0xFFFFFFFF (max int64)', Long.fromBits(-1, 0x7fffffff, false), false],
+		['high=0x80000000, low=0 (min int64)', Long.fromBits(0, -2147483648, false), false],
+
+		// Powers of 2
+		['2^32', Long.fromString('4294967296', true), true],
+		['2^32 signed', Long.fromString('4294967296', false), false],
+		['2^48', Long.fromString('281474976710656', true), true],
+		['2^63', Long.fromString('9223372036854775808', true), true]
+	]
+
+	describe('longToString equivalence', () => {
+		for (const [desc, longVal, unsigned] of testCases) {
+			it(`${desc}: Long(${longVal.low}, ${longVal.high}, ${unsigned})`, () => {
+				const oldResult = longToStringOld(longVal, unsigned)
+				const newResult = longToStringNew(longVal, unsigned)
+				expect(newResult).toBe(oldResult)
+			})
+		}
+	})
+
+	describe('longToNumber equivalence', () => {
+		for (const [desc, longVal, unsigned] of testCases) {
+			it(`${desc}: Long(${longVal.low}, ${longVal.high}, ${unsigned})`, () => {
+				const oldResult = longToNumberOld(longVal, unsigned)
+				const newResult = longToNumberNew(longVal, unsigned)
+				// For large values, both may lose precision equally (Number limitation)
+				// So we compare string representations
+				expect(newResult.toString()).toBe(oldResult.toString())
+			})
+		}
+	})
+
+	describe('non-Long inputs (fallback paths)', () => {
+		it('string passthrough', () => {
+			expect(longToStringNew('12345')).toBe('12345')
+			expect(longToStringNew('0')).toBe('0')
+		})
+		it('number passthrough', () => {
+			expect(longToStringNew(42)).toBe('42')
+			expect(longToStringNew(0)).toBe('0')
+			expect(longToStringNew(-1)).toBe('-1')
+		})
+		it('null/undefined fallback', () => {
+			expect(longToStringNew(null)).toBe('null')
+			expect(longToStringNew(undefined)).toBe('undefined')
+		})
+		it('object without low/high', () => {
+			expect(longToStringNew({ foo: 'bar' })).toBe('[object Object]')
+		})
+
+		// Defensive: a raw {low, high} JSON object can carry `high` as an
+		// unsigned 32-bit value (Long.fromBits would normalize via `| 0`,
+		// but plain JSON deserialization does not). Without `value.high | 0`
+		// the sign-bit check fails and the result is interpreted as unsigned.
+		// Upstream Baileys PR #2333 has this latent bug; InfiniteAPI fixes it.
+		it('signed sign-bit detection on raw unsigned high (-1 as {low: -1, high: 4294967295})', () => {
+			const raw = { low: -1, high: 0xffffffff }
+			// signed: -1
+			expect(longToStringNew(raw, false)).toBe('-1')
+			// unsigned: max uint64
+			expect(longToStringNew(raw, true)).toBe('18446744073709551615')
+		})
+
+		it('signed sign-bit detection on raw unsigned high (-4294967296 as {low: 0, high: 4294967295})', () => {
+			const raw = { low: 0, high: 0xffffffff }
+			// signed: -4294967296 (high word = -1 after normalization)
+			expect(longToStringNew(raw, false)).toBe('-4294967296')
+			// unsigned: 0xFFFFFFFF00000000 = 18446744069414584320
+			expect(longToStringNew(raw, true)).toBe('18446744069414584320')
+		})
+	})
+
+	describe('fuzz: random Long values', () => {
+		it('100 random unsigned values match', () => {
+			for (let i = 0; i < 100; i++) {
+				const low = (Math.random() * 0xffffffff) | 0
+				const high = (Math.random() * 0xffffffff) | 0
+				const longVal = Long.fromBits(low, high, true)
+				const oldResult = longToStringOld(longVal, true)
+				const newResult = longToStringNew(longVal, true)
+				expect(newResult).toBe(oldResult)
+			}
+		})
+
+		it('100 random signed values match', () => {
+			for (let i = 0; i < 100; i++) {
+				const low = (Math.random() * 0xffffffff) | 0
+				const high = (Math.random() * 0xffffffff) | 0
+				const longVal = Long.fromBits(low, high, false)
+				const oldResult = longToStringOld(longVal, false)
+				const newResult = longToStringNew(longVal, false)
+				expect(newResult).toBe(oldResult)
+			}
+		})
+	})
+})

src/__tests__/binary/reconnection-sync-skip.test.ts

@@ -0,0 +1,146 @@
+import { jest } from '@jest/globals'
+import { proto, type WAMessage } from '../..'
+import { DEFAULT_CONNECTION_CONFIG } from '../../Defaults'
+import makeWASocket from '../../Socket'
+import { makeSession, mockWebSocket } from '../TestUtils/session'
+
+mockWebSocket()
+
+// chats.ts treats a connection as a reconnection when EITHER signal is true:
+//   1. authState.creds.accountSyncCounter > 0
+//      (at least one full history sync completed in a previous session)
+//   2. socketSkippedOfflineBuffer (forwarded from socket.ts as `skipOfflineBuffer`)
+//      (socket.ts already decided to skip the offline buffer, e.g. because
+//       routingInfo was stale and was discarded on startup)
+// On reconnection, AwaitingInitialSync is skipped and the buffer is flushed
+// immediately so live messages are not held in the initial-sync window.
+describe('Reconnection Sync Skip', () => {
+	it('should skip the history sync wait on reconnection (accountSyncCounter > 0)', async () => {
+		const { state, clear } = await makeSession()
+
+		state.creds.me = { id: '1234567890:1@s.whatsapp.net', name: 'Test User' }
+		// Simulate a session that has already synced before
+		state.creds.accountSyncCounter = 1
+
+		const sock = makeWASocket({
+			...DEFAULT_CONNECTION_CONFIG,
+			auth: state
+		})
+
+		const messageListener = jest.fn()
+		sock.ev.on('messages.upsert', messageListener)
+
+		// Simulate receiving pending notifications (triggers AwaitingInitialSync)
+		sock.ev.emit('connection.update', { receivedPendingNotifications: true })
+
+		// Emit a message immediately after — if the wait is skipped,
+		// the buffer should already be flushed and this message should be delivered.
+		const msg = proto.WebMessageInfo.fromObject({
+			key: { remoteJid: '1234567890@s.whatsapp.net', fromMe: false, id: 'MSG_AFTER_RECONNECT' },
+			messageTimestamp: Date.now() / 1000,
+			message: { conversation: 'Hello after reconnect' }
+		}) as WAMessage
+		sock.ev.emit('messages.upsert', { messages: [msg], type: 'notify' })
+
+		await new Promise(resolve => setTimeout(resolve, 50))
+
+		// Message should be delivered immediately, NOT buffered
+		expect(messageListener).toHaveBeenCalledTimes(1)
+		expect(messageListener).toHaveBeenCalledWith(
+			expect.objectContaining({
+				messages: expect.arrayContaining([expect.objectContaining({ key: msg.key })]),
+				type: 'notify'
+			})
+		)
+
+		await sock.end(new Error('Test completed'))
+		await clear()
+	})
+
+	it('should skip the history sync wait when socketSkippedOfflineBuffer is true (stale routingInfo, accountSyncCounter === 0)', async () => {
+		const { state, clear } = await makeSession()
+
+		state.creds.me = { id: '1234567890:1@s.whatsapp.net', name: 'Test User' }
+		// Fresh-looking session from the counter perspective
+		state.creds.accountSyncCounter = 0
+		// But routingInfo is present and we ask the socket to discard it on start.
+		// socket.ts will set hadStaleRoutingInfo=true → skipOfflineBuffer=true,
+		// which chats.ts forwards as socketSkippedOfflineBuffer. Without this
+		// branch, the buffers would be misaligned (offline buffer skipped while
+		// AwaitingInitialSync still waits) and live messages would stall.
+		state.creds.routingInfo = Buffer.from([1, 2, 3, 4])
+
+		const sock = makeWASocket({
+			...DEFAULT_CONNECTION_CONFIG,
+			auth: state,
+			clearRoutingInfoOnStart: true
+		})
+
+		const messageListener = jest.fn()
+		sock.ev.on('messages.upsert', messageListener)
+
+		sock.ev.emit('connection.update', { receivedPendingNotifications: true })
+
+		const msg = proto.WebMessageInfo.fromObject({
+			key: { remoteJid: '1234567890@s.whatsapp.net', fromMe: false, id: 'MSG_AFTER_STALE_ROUTING' },
+			messageTimestamp: Date.now() / 1000,
+			message: { conversation: 'Hello after stale routing reconnect' }
+		}) as WAMessage
+		sock.ev.emit('messages.upsert', { messages: [msg], type: 'notify' })
+
+		await new Promise(resolve => setTimeout(resolve, 50))
+
+		expect(messageListener).toHaveBeenCalledTimes(1)
+		expect(messageListener).toHaveBeenCalledWith(
+			expect.objectContaining({
+				messages: expect.arrayContaining([expect.objectContaining({ key: msg.key })]),
+				type: 'notify'
+			})
+		)
+
+		await sock.end(new Error('Test completed'))
+		await clear()
+	})
+
+	it('should still wait for history sync on fresh pairing (both signals false)', async () => {
+		const { state, clear } = await makeSession()
+
+		state.creds.me = { id: '1234567890:1@s.whatsapp.net', name: 'Test User' }
+		// Fresh pairing — both reconnect signals are false:
+		// accountSyncCounter is 0 (default) and no stale routingInfo to clear.
+		state.creds.accountSyncCounter = 0
+
+		const sock = makeWASocket({
+			...DEFAULT_CONNECTION_CONFIG,
+			auth: state
+		})
+
+		const messageListener = jest.fn()
+		sock.ev.on('messages.upsert', messageListener)
+
+		sock.ev.emit('connection.update', { receivedPendingNotifications: true })
+
+		const msg = proto.WebMessageInfo.fromObject({
+			key: { remoteJid: '1234567890@s.whatsapp.net', fromMe: false, id: 'MSG_DURING_INITIAL_SYNC' },
+			messageTimestamp: Date.now() / 1000,
+			message: { conversation: 'Hello during initial sync' }
+		}) as WAMessage
+		sock.ev.emit('messages.upsert', { messages: [msg], type: 'notify' })
+
+		await new Promise(resolve => setTimeout(resolve, 50))
+
+		// Message should be BUFFERED (not delivered) because we're waiting for history sync
+		expect(messageListener).toHaveBeenCalledTimes(0)
+
+		// Drain the 2s AwaitingInitialSync timeout (chats.ts:1522) so its callback
+		// doesn't fire after Jest considers the test done — otherwise we get a
+		// "Cannot log after tests are done" warning from the post-teardown flush
+		// and the suite is flagged with --detectOpenHandles. After the timer
+		// fires, syncState becomes Online and the buffer flushes; that delivery
+		// is post-assertion and irrelevant to the test goal.
+		await new Promise(resolve => setTimeout(resolve, 2_100))
+
+		await sock.end(new Error('Test completed'))
+		await clear()
+	}, 10_000)
+})

src/__tests__/proto-tojson-long.test.ts

@@ -1,3 +1,4 @@
+import Long from 'long'
 import '../index.js'
 import { proto } from '../../WAProto/index.js'
 
@@ -28,4 +29,91 @@ describe('proto serialization', () => {
 		const json = message.toJSON()
 		expect(json.message?.imageMessage?.fileLength).toBe('1234567890123456789')
 	})
+
+	it('converts Long objects to strings correctly via BigInt fast path', () => {
+		const message = proto.WebMessageInfo.fromObject({
+			key: {
+				remoteJid: '123@s.whatsapp.net',
+				id: 'ABC123',
+				fromMe: false
+			},
+			messageTimestamp: Long.fromNumber(1700000000, true),
+			message: {
+				imageMessage: {
+					fileLength: Long.fromString('9876543210', true)
+				}
+			}
+		})
+
+		const json = message.toJSON()
+		expect(json.messageTimestamp).toBe('1700000000')
+		expect(json.message?.imageMessage?.fileLength).toBe('9876543210')
+	})
+
+	it('handles large unsigned Long values (> MAX_SAFE_INTEGER)', () => {
+		const message = proto.WebMessageInfo.fromObject({
+			key: {
+				remoteJid: '123@s.whatsapp.net',
+				id: 'ABC123',
+				fromMe: false
+			},
+			messageTimestamp: Long.fromString('18446744073709551615', true), // max uint64
+			message: {
+				imageMessage: {
+					fileLength: Long.fromString('9999999999999999999', true)
+				}
+			}
+		})
+
+		const json = message.toJSON()
+		expect(json.messageTimestamp).toBe('18446744073709551615')
+		expect(json.message?.imageMessage?.fileLength).toBe('9999999999999999999')
+	})
+
+	it('handles zero and small Long values', () => {
+		const message = proto.WebMessageInfo.fromObject({
+			key: {
+				remoteJid: '123@s.whatsapp.net',
+				id: 'ABC123',
+				fromMe: false
+			},
+			messageTimestamp: Long.fromNumber(0, true),
+			message: {
+				imageMessage: {
+					fileLength: Long.fromNumber(1, true)
+				}
+			}
+		})
+
+		const json = message.toJSON()
+		expect(json.messageTimestamp).toBe('0')
+		expect(json.message?.imageMessage?.fileLength).toBe('1')
+	})
+
+	it('roundtrips encode/decode with Long fields preserving values (> MAX_SAFE_INTEGER)', () => {
+		// Use uint64 values above Number.MAX_SAFE_INTEGER (2^53 - 1) so the
+		// roundtrip actually exercises the BigInt fast path on decode->toJSON.
+		// Safe integers would silently work even if longToString fell back to
+		// Number(value).
+		const original = proto.WebMessageInfo.fromObject({
+			key: {
+				remoteJid: '123@s.whatsapp.net',
+				id: 'ABC123',
+				fromMe: false
+			},
+			messageTimestamp: Long.fromString('18446744073709551615', true),
+			message: {
+				imageMessage: {
+					fileLength: Long.fromString('9999999999999999999', true)
+				}
+			}
+		})
+
+		const encoded = proto.WebMessageInfo.encode(original).finish()
+		const decoded = proto.WebMessageInfo.decode(encoded)
+		const json = decoded.toJSON()
+
+		expect(json.messageTimestamp).toBe('18446744073709551615')
+		expect(json.message?.imageMessage?.fileLength).toBe('9999999999999999999')
+	})
 })

src/index.ts

@@ -28,7 +28,16 @@ console.info = function (...args: unknown[]) {
 
 // Track errors by type + JID to avoid duplicates (using Map for better performance)
 const _errorTimestamps = new Map<string, number>()
-const DEDUP_WINDOW_MS = 150
+// Dedup window for repeated decrypt-error console lines (Bad MAC / Counter / etc).
+// Was 150ms, but retry attempts of the SAME message are typically ~300-1000ms apart,
+// so the second attempt fell outside the window and double-printed.
+//
+// TRADE-OFF: dedup key is `errorType + JID` (no message-id). With 5s, a burst of
+// errors for the SAME JID — even of slightly different categories or different
+// messages — collapses to one log line every 5s. This is intentional for a noisy
+// production stream; if you need per-message visibility, set BAILEYS_LOG_LEVEL=debug
+// to bypass this console-side dedup and see the structured pino logs in full.
+const DEDUP_WINDOW_MS = 5000
 
 console.error = function (...args: unknown[]) {
 	if (args.length > 0 && typeof args[0] === 'string') {
@@ -70,7 +79,7 @@ console.error = function (...args: unknown[]) {
 				const lastTime = _errorTimestamps.get(dedupeKey)
 
 				if (lastTime && now - lastTime < DEDUP_WINDOW_MS) {
-					return // Skip duplicate within 150ms window
+					return // Skip duplicate within DEDUP_WINDOW_MS window
 				}
 
 				_errorTimestamps.set(dedupeKey, now)

yarn.lock

@@ -388,6 +388,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@borewit/text-codec@npm:^0.2.2":
+  version: 0.2.2
+  resolution: "@borewit/text-codec@npm:0.2.2"
+  checksum: 10c0/2d3fb132bc6a132914a8fbf8e9ff2fa1ead210ecc395b28bb7355bd7719548a5e351ffe39f21c3bee8048f6cabd99eabd404bb5cc809cad9cba25abed19d271f
+  languageName: node
+  linkType: hard
+
 "@cacheable/node-cache@npm:^2.0.1":
   version: 2.0.1
   resolution: "@cacheable/node-cache@npm:2.0.1"
@@ -3105,7 +3112,7 @@ __metadata:
     libsignal: "github:whiskeysockets/libsignal-node"
     link-preview-js: "npm:^4.0.0"
     lru-cache: "npm:^11.2.6"
-    music-metadata: "npm:^11.12.0"
+    music-metadata: "npm:^11.12.3"
     open: "npm:^11.0.0"
     p-queue: "npm:^9.0.0"
     pino: "npm:^10.3.1"
@@ -4556,15 +4563,15 @@ __metadata:
   languageName: node
   linkType: hard
 
-"file-type@npm:^21.3.0":
-  version: 21.3.0
-  resolution: "file-type@npm:21.3.0"
+"file-type@npm:^21.3.1":
+  version: 21.3.1
+  resolution: "file-type@npm:21.3.1"
   dependencies:
     "@tokenizer/inflate": "npm:^0.4.1"
     strtok3: "npm:^10.3.4"
     token-types: "npm:^6.1.1"
     uint8array-extras: "npm:^1.4.0"
-  checksum: 10c0/1b1fa909e6063044a6da1d2ea348ee4d747ed9286382d3f0d4d6532c11fb2ea9f2e7e67b2bc7d745d1bc937e05dee1aa8cb912c64250933bcb393a3744f4e284
+  checksum: 10c0/66a8eda781c803c6fc372464abba88cee564cfe30f029716f06909da1564bc51d0a4e8d34654b881dc751cdb0513338b3c0747e06a608cee0dd5c5499b018d47
   languageName: node
   linkType: hard
 
@@ -6504,21 +6511,21 @@ __metadata:
   languageName: node
   linkType: hard
 
-"music-metadata@npm:^11.12.0":
-  version: 11.12.0
-  resolution: "music-metadata@npm:11.12.0"
+"music-metadata@npm:^11.12.3":
+  version: 11.12.3
+  resolution: "music-metadata@npm:11.12.3"
   dependencies:
-    "@borewit/text-codec": "npm:^0.2.1"
+    "@borewit/text-codec": "npm:^0.2.2"
     "@tokenizer/token": "npm:^0.3.0"
     content-type: "npm:^1.0.5"
     debug: "npm:^4.4.3"
-    file-type: "npm:^21.3.0"
+    file-type: "npm:^21.3.1"
     media-typer: "npm:^1.1.0"
     strtok3: "npm:^10.3.4"
     token-types: "npm:^6.1.2"
     uint8array-extras: "npm:^1.5.0"
     win-guid: "npm:^0.2.1"
-  checksum: 10c0/014a120b8941ab80452171def0ec3cba013041ba4b94f8061ad493a037d3423e6d316131a13fb0433404685ebd3c8e3ae2255c1bafaeb20673fcd73af2df0148
+  checksum: 10c0/57df905f51ec792e5b4c994645eab64d47d5608b9de11151f54b26fbd5f563598ec04d8aed7f244ef1479030d78ddab8af1ee84dfcee40a93b3241941b50999d
   languageName: node
   linkType: hard