feat: sync Bot API gateway support

internal/domain/botapi_update.go

@@ -0,0 +1,33 @@
+package domain
+
+// BotAPIUpdateKind is the Bot API delivery shape for a queued update.
+type BotAPIUpdateKind string
+
+const (
+	BotAPIUpdateMessage       BotAPIUpdateKind = "message"
+	BotAPIUpdateEditedMessage BotAPIUpdateKind = "edited_message"
+)
+
+// BotAPIUpdate is a durable Bot API update cursor. ID is the Bot API update_id
+// and is global across all bots, matching Telegram Bot API's monotonic offset
+// contract without reusing MTProto pts from user/channel logs.
+type BotAPIUpdate struct {
+	ID        int64
+	BotUserID int64
+	Kind      BotAPIUpdateKind
+	Peer      Peer
+	MessageID int
+	SourcePts int
+	Date      int
+}
+
+// EnqueueBotAPIUpdateRequest describes a message-like update that should be
+// delivered to one bot via getUpdates.
+type EnqueueBotAPIUpdateRequest struct {
+	BotUserID int64
+	Kind      BotAPIUpdateKind
+	Peer      Peer
+	MessageID int
+	SourcePts int
+	Date      int
+}