> BTW I believe `-C` will disable some cache checking, caching is enabled by default

You're right, my memory has let me down.

> Do you have any pointers for the "load on tab" idea? I didn't turn up any good results in DDG and LLMs were just hallucinating.

The simplest implementation would be something like

    bindkey ^I init_completions

    init_completions () {
      # ... init logic here ...

      # rebind tab to complete
      bindkey ^I complete-word
      # actually do complete the initial request
      zle complete-word
    }

Edit: I see now you already figured it out, yeah that's exactly what I meant