WIP: add remaining message types

test/remote_poc_test.zig

@@ -69,6 +69,7 @@ const Parent = struct {
                         try std.testing.expectEqualStrings("test_actor", s.to_name);
                         try std.testing.expect(try cbor.match(s.payload, .{ "hello", "from_child" }));
                     },
+                    else => return unexpected(thespian.message{ .buf = frame }),
                 }
                 self.frame_received = true;
             }