Add native Grok Build integration (grok)

[aatosolavi]

idea / problem

Grok Build (xAI’s grok CLI) is already detected in Herdr through screen manifests, but it has no native integration.

Because of this, there’s no session reporting. When you restart Herdr or reattach, you can’t reliably resume the exact session using grok --resume . This feels inconsistent compared to Codex, Cursor Agent, Claude Code, etc.

requested change

Add a proper grok integration following the same pattern as the existing ones:

• herdr integration install grok
• Reports the native session id (via a small hook + registration in ~/.grok/hooks/)
• Enables grok --resume restore after Herdr restart

State detection would continue to use the screen manifest (same approach as Codex/Cursor/etc.).

why you want this

I use Grok Build together with other agents inside Herdr. Having the same session restore behavior as the other major coding CLIs would make multi-agent workflows and recovering sessions after restarts much more reliable.

The change is small and follows the existing integration pattern exactly.

[tahaalibra]

duplicate of #991

[carlesso]

Hey @aatosolavi I have this: https://github.com/carlesso/herdr/tree/grok-integration if you want to try it out!

[mohamed100xa1-png]

Hi