feat(server): handle workspace doc updates (#11937)

docs/developing-server.md

@@ -35,6 +35,12 @@ Server also requires native packages to be built, you can build them by running
 yarn affine @affine/server-native build
 ```
 
+## Build @affine/reader package
+
+```sh
+yarn affine @affine/reader build
+```
+
 ## Prepare dev environment
 
 ```sh