If you have the latest plugin code it should work out of the box after install (and has been for a long time).You can always run "opnsense-patch" to clear the menu cache. It's just a file on the disk:https://github.com/opnsense/update/commit/ed95d5e3bb5Cheers,Franco
As I said the appropriate hook is provided by https://github.com/opnsense/plugins/blob/master/Templates/configure unless you clobber +POST_INSTALL yourself. If that is the case you can always alter your approach and use +POST_INSTALL.pre or +POST_INSTALL.post file overrides.Cheers,Franco
Next add a +POST_INSTALL file in the plugin directory, to reload the configd process after installation. This is needed for the new “test” command to register.