Feature Request: Add Google Antigravity (agy) to default AI agent selection and crash diagnostics

[THE-KINGDOM]

Summary

Please consider adding official support for Google Antigravity (agy) alongside Claude Code, Codex, and OpenCode in the Omarchy agent framework (omarchy default agent and /usr/bin/omarchy-agent).

Antigravity functions effectively as an agent harness for users authenticated via Google AI Pro/Gemini, but currently requires manual shims and permission handling to integrate cleanly into Omarchy's automated crash diagnostics pipeline.

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Context & Required Implementation Details

1. Interactive Prompt Handling (-i Flag):
   When invoking omarchy-agent with --prompt "..." (such as from omarchy-agent-crash notifications), agy requires the -i flag to run interactively with the preloaded system prompt. Calling it without -i or passing positional strings directly causes command line parsing errors.

2. Dispatcher Integration (/usr/bin/omarchy-agent):
   Allowing agy to be selected as a recognized option in omarchy default agent and routing terminal launches through the standard dispatcher:

   agy -i "$prompt"
   
   

/Permissions

Pre-Approved Read-Only Diagnostic Rules:
When omarchy-agent-crash triggers the default skill (/usr/share/omarchy/default/agents/skills/diagnose-crash/SKILL.md), Antigravity prompts for interactive permission loops on non-destructive log inspection commands. To make "Click to diagnose with AI" seamless out of the box, the following read-only rules should be seeded into ~/.gemini/antigravity-cli/settings.json:
command(journalctl)
command(coredumpctl)
command(systemctl status)
command(pacman -Q)
command(ls)
command(cat)
Non-workspace read access for /usr/share/omarchy/default/agents/skills/
Motivation
Integrating Antigravity gives users an automated, out-of-the-box system crash diagnosis agent powered by their Google AI subscriptions without manual wrapper scripts or permission friction.