Accept pasted images in inbox Other and Reply answers

internal/server/inbox.go

@@ -41,6 +41,12 @@ func (s *Server) RespondInbox(w http.ResponseWriter, r *http.Request) {
 	if !readJSON(w, r, &req) {
 		return
 	}
+	for _, c := range req.Responses {
+		_, ok := s.images(w, r, c.Images)
+		if !ok {
+			return
+		}
+	}
 
 	items, err := s.agents.Respond(r.Context(), actor(r), req.Responses)
 	if err != nil {