v0.1.1 — fix --model + harden setup ping

Bugfix release that ships the day after v0.1.0.

Fixed

• Removed --model flag from /agy:rescue and /agy:research. The agy CLI 1.0.x does not accept --model — passing it makes the binary exit with flags provided but not defined: -model. Earlier versions of this plugin documented and parsed this flag, so any user who tried --model pro or similar got an immediate hard failure. Model selection is now delegated entirely to agy's internal default (Gemini 3.5 Flash for most cases).
• Setup ping no longer enters tool-call loops. agy defaults to an agentic mode that calls ListDir, Search, ReadFile even for trivial prompts. The previous /agy:setup ping was \"ping — reply with only the word 'pong'\", which the model interpreted as license to explore the workspace, consume the entire --print-timeout, and return exit 0 with empty stdout — indistinguishable from "OAuth missing". v0.1.1 sends an explicit "do not use any tools, do not search, do not read files" instruction in the ping prompt.

Changed

• Health-check troubleshooting now distinguishes "tool-call timeout" from "OAuth missing". README FAQ and `commands/setup.md` now document both failure modes, with `~/.gemini/antigravity-cli/installation_id` as the diagnostic check for OAuth.
• Removed the "Multi-model support" README section. It documented model identifiers (`gemini-3.5-pro`, `claude-opus-4-6-thinking`, etc.) that are not selectable from the CLI in 1.0.x. The section will return when upstream `agy` exposes a model flag.

Notes

• agy 1.0.x has model selection inside its interactive settings, not on the command line. If you need a specific model, change it via agy directly.
• This patch is non-breaking: the slash commands keep the same names. Anyone passing --model X will now get the model agy picks by default instead of a hard failure.

Upgrade

/plugin update antigravity@marcosnahuel-antigravity

Restart Claude Code after upgrading so the slash commands reload.