Refactor: Rename NanoKVM to BatchuKVM and update server URL

server/proto/application.go

@@ -0,0 +1,14 @@
+package proto
+
+type GetVersionRsp struct {
+	Current string `json:"current"`
+	Latest  string `json:"latest"`
+}
+
+type GetPreviewRsp struct {
+	Enabled bool `json:"enabled"`
+}
+
+type SetPreviewReq struct {
+	Enable bool `validate:"omitempty"`
+}