Executing a Bash script from an Omni Automation script?

I fear the answer to this is likely “no,” due to sandboxing, security and all, but does anyone know how I might trigger execution of a Bash script from an .omnijs Plug-In for OmniOutliner for Mac?

Stepping back from plugins, you could run your omniJS code from JXA, passing values back and forth between the two JS contexts, and running the Bash code from the JXA side with .doShellScript