feat: sync bot rich messages and inline menus

internal/domain/botapi_rich_message.go

@@ -0,0 +1,29 @@
+package domain
+
+// BotAPIRichMessageInput is the protocol-neutral HTTP Bot API input passed to
+// the RPC edge. Exactly one of HTML, Markdown, or BlocksJSON must be present.
+// BlocksJSON and MediaJSON are retained in the DTO so unsupported Bot API 10.2
+// shapes are rejected explicitly at the conversion boundary instead of being
+// flattened or silently dropped.
+type BotAPIRichMessageInput struct {
+	HTML                string
+	Markdown            string
+	BlocksJSON          []byte
+	MediaJSON           []byte
+	RTL                 bool
+	SkipEntityDetection bool
+}
+
+func (m BotAPIRichMessageInput) SourceCount() int {
+	n := 0
+	if m.HTML != "" {
+		n++
+	}
+	if m.Markdown != "" {
+		n++
+	}
+	if len(m.BlocksJSON) != 0 {
+		n++
+	}
+	return n
+}