perf: sync protocol and core hardening updates

internal/store/memory/channel_store.go

@@ -13,6 +13,11 @@ type channelRandomKey struct {
 	randomID  int64
 }
 
+type channelMessageReplayKey struct {
+	channelID int64
+	messageID int
+}
+
 type boostSlotKey struct {
 	userID int64
 	slot   int
@@ -58,33 +63,37 @@ func (w channelReadWatermark) advance(userID int64, maxID int) channelReadWaterm
 
 // ChannelStore is an in-memory channel/supergroup store for tests and local development.
 type ChannelStore struct {
-	mu         sync.RWMutex
-	nextID     int64
-	nextHash   int64
-	channels   map[int64]domain.Channel
-	members    map[int64]map[int64]domain.ChannelMember
-	dialogs    map[int64]map[int64]domain.ChannelDialog
-	topics     map[int64]map[int]domain.ChannelForumTopic
-	messages   map[int64][]domain.ChannelMessage
-	reactions  map[int64]map[int]map[int64][]domain.ChannelMessagePeerReaction
+	mu        sync.RWMutex
+	nextID    int64
+	nextHash  int64
+	channels  map[int64]domain.Channel
+	members   map[int64]map[int64]domain.ChannelMember
+	dialogs   map[int64]map[int64]domain.ChannelDialog
+	topics    map[int64]map[int]domain.ChannelForumTopic
+	messages  map[int64][]domain.ChannelMessage
+	reactions map[int64]map[int]map[int64][]domain.ChannelMessagePeerReaction
 	// paidReactions 是 per-(channel,message,user) 付费 reaction 累计星数 + 匿名标志。
-	paidReactions map[int64]map[int]map[int64]memoryPaidReaction
-	top           map[int64]map[string]domain.TopMessageReaction
-	recent     map[int64]map[string]domain.RecentMessageReaction
-	savedTags  map[int64]map[string]domain.SavedReactionTag
-	mentions   map[int64]map[int64]map[int]memoryMention
-	msgViews   map[int64]map[int]int
-	msgViewers map[int64]map[int]map[int64]struct{}
-	events     map[int64][]domain.ChannelUpdateEvent
-	adminLogs  map[int64][]domain.ChannelAdminLogEvent
-	invites    map[string]domain.ChannelInvite
-	importers  map[int64]map[int64]domain.ChannelInviteImporter
-	msgSeq     map[int64]int
-	ptsSeq     map[int64]int
-	logSeq     map[int64]int64
-	randomToID map[channelRandomKey]int
-	boostSlots map[boostSlotKey]domain.PremiumBoostSlot
-	readMarks  map[int64]channelReadWatermark
+	paidReactions    map[int64]map[int]map[int64]memoryPaidReaction
+	top              map[int64]map[string]domain.TopMessageReaction
+	recent           map[int64]map[string]domain.RecentMessageReaction
+	savedTags        map[int64]map[string]domain.SavedReactionTag
+	mentions         map[int64]map[int64]map[int]memoryMention
+	msgViews         map[int64]map[int]int
+	msgViewers       map[int64]map[int]map[int64]struct{}
+	events           map[int64][]domain.ChannelUpdateEvent
+	retention        map[int64]domain.ChannelUpdateRetentionCheckpoint
+	adminLogs        map[int64][]domain.ChannelAdminLogEvent
+	invites          map[string]domain.ChannelInvite
+	importers        map[int64]map[int64]domain.ChannelInviteImporter
+	msgSeq           map[int64]int
+	ptsSeq           map[int64]int
+	logSeq           map[int64]int64
+	randomToID       map[channelRandomKey]int
+	sendSnapshots    map[channelMessageReplayKey][]byte
+	sendFingerprints map[channelMessageReplayKey][]byte
+	deleteReceipts   map[channelMessageReplayKey]*domain.ChannelUpdateEvent
+	boostSlots       map[boostSlotKey]domain.PremiumBoostSlot
+	readMarks        map[int64]channelReadWatermark
 	// topicReads 是 per-(channel,user,topic) 已读水位（forum 话题独立已读，不碰频道级 member 水位）。
 	topicReads map[int64]map[int64]map[int]memoryTopicRead
 	// polls 是共享 poll 权威（与 MessageStore 同一实例）；nil 时 poll 链路按未接入处理。
@@ -99,31 +108,35 @@ func (s *ChannelStore) AttachPollStore(polls *PollStore) {
 // NewChannelStore creates an in-memory ChannelStore.
 func NewChannelStore() *ChannelStore {
 	return &ChannelStore{
-		nextID:     firstMemoryChannelID,
-		nextHash:   900000000000,
-		channels:   make(map[int64]domain.Channel),
-		members:    make(map[int64]map[int64]domain.ChannelMember),
-		dialogs:    make(map[int64]map[int64]domain.ChannelDialog),
-		topics:     make(map[int64]map[int]domain.ChannelForumTopic),
-		messages:   make(map[int64][]domain.ChannelMessage),
-		reactions:     make(map[int64]map[int]map[int64][]domain.ChannelMessagePeerReaction),
-		paidReactions: make(map[int64]map[int]map[int64]memoryPaidReaction),
-		top:           make(map[int64]map[string]domain.TopMessageReaction),
-		recent:     make(map[int64]map[string]domain.RecentMessageReaction),
-		savedTags:  make(map[int64]map[string]domain.SavedReactionTag),
-		mentions:   make(map[int64]map[int64]map[int]memoryMention),
-		msgViews:   make(map[int64]map[int]int),
-		msgViewers: make(map[int64]map[int]map[int64]struct{}),
-		events:     make(map[int64][]domain.ChannelUpdateEvent),
-		adminLogs:  make(map[int64][]domain.ChannelAdminLogEvent),
-		invites:    make(map[string]domain.ChannelInvite),
-		importers:  make(map[int64]map[int64]domain.ChannelInviteImporter),
-		msgSeq:     make(map[int64]int),
-		ptsSeq:     make(map[int64]int),
-		logSeq:     make(map[int64]int64),
-		randomToID: make(map[channelRandomKey]int),
-		boostSlots: make(map[boostSlotKey]domain.PremiumBoostSlot),
-		readMarks:  make(map[int64]channelReadWatermark),
-		topicReads: make(map[int64]map[int64]map[int]memoryTopicRead),
+		nextID:           firstMemoryChannelID,
+		nextHash:         900000000000,
+		channels:         make(map[int64]domain.Channel),
+		members:          make(map[int64]map[int64]domain.ChannelMember),
+		dialogs:          make(map[int64]map[int64]domain.ChannelDialog),
+		topics:           make(map[int64]map[int]domain.ChannelForumTopic),
+		messages:         make(map[int64][]domain.ChannelMessage),
+		reactions:        make(map[int64]map[int]map[int64][]domain.ChannelMessagePeerReaction),
+		paidReactions:    make(map[int64]map[int]map[int64]memoryPaidReaction),
+		top:              make(map[int64]map[string]domain.TopMessageReaction),
+		recent:           make(map[int64]map[string]domain.RecentMessageReaction),
+		savedTags:        make(map[int64]map[string]domain.SavedReactionTag),
+		mentions:         make(map[int64]map[int64]map[int]memoryMention),
+		msgViews:         make(map[int64]map[int]int),
+		msgViewers:       make(map[int64]map[int]map[int64]struct{}),
+		events:           make(map[int64][]domain.ChannelUpdateEvent),
+		retention:        make(map[int64]domain.ChannelUpdateRetentionCheckpoint),
+		adminLogs:        make(map[int64][]domain.ChannelAdminLogEvent),
+		invites:          make(map[string]domain.ChannelInvite),
+		importers:        make(map[int64]map[int64]domain.ChannelInviteImporter),
+		msgSeq:           make(map[int64]int),
+		ptsSeq:           make(map[int64]int),
+		logSeq:           make(map[int64]int64),
+		randomToID:       make(map[channelRandomKey]int),
+		sendSnapshots:    make(map[channelMessageReplayKey][]byte),
+		sendFingerprints: make(map[channelMessageReplayKey][]byte),
+		deleteReceipts:   make(map[channelMessageReplayKey]*domain.ChannelUpdateEvent),
+		boostSlots:       make(map[boostSlotKey]domain.PremiumBoostSlot),
+		readMarks:        make(map[int64]channelReadWatermark),
+		topicReads:       make(map[int64]map[int64]map[int]memoryTopicRead),
 	}
 }