Antigravity Delegate

Delegate $ARGUMENTS to the antigravity-preview-05-2026 managed agent in a remote Gemini sandbox, wait for it to finish, and report the result.

The script is at ${CLAUDE_PLUGIN_ROOT}/scripts/antigravity.py. It is self-daemonizing: delegate returns immediately with a run_id, a detached worker performs the interaction, and a status file flips to completed / failed when done. Requires GEMINI_API_KEY in the environment and uv on PATH.

Phase 1: Parse arguments

Goal: Separate the task prompt from flags.