Create a Homebrew cask for Agent!

[AgentiLoop]

What

Agent! ships signed release builds on GitHub Releases, but there's no brew install --cask path. A Homebrew cask makes installation a one-liner and gets Agent! discovered by Homebrew users.

Recipe

1. Read the Homebrew cask cookbook
2. Write a cask formula pointing at the latest release artifact (app name is Agent!.app, min macOS 26.4)
3. Either submit it to homebrew/homebrew-cask (preferred, needs the repo to meet their notability bar) or create a tap repo (e.g. macOS26/homebrew-agent) and PR the formula + a README install snippet here

Definition of done

• brew install --cask agent (or brew install macOS26/agent/agent) installs the latest release
• README Quick Start updated with the brew one-liner

No Swift knowledge required — Ruby formula + docs only.

[AgentiLoop]

Done — Agent! is now installable via Homebrew:

brew install --cask agentiloop/tap/agent

What shipped

• Tap repo: https://github.com/AgentiLoop/homebrew-tap (Casks/agent.rb)
• Points at the latest stable release DMG (v1.1.33.233, sha256-pinned); livecheck uses :github_latest, so brew upgrade --cask agent tracks whatever is marked Latest (pre-releases are ignored)
• depends_on macos: :tahoe, arch: :arm64 — matches the notarized build's min OS 26.4
• zap trash covers the Agent.app.toddbruss prefs / caches / HTTPStorages
• Passes brew style and brew audit --cask --online --strict; verified with a real brew install / uninstall cycle and Gatekeeper accepts the installed app
• README Quick Start updated with the one-liner (2b08338)

Definition of done

• brew install --cask agentiloop/tap/agent installs the latest release
• README Quick Start updated with the brew one-liner

Went with our own tap rather than homebrew/homebrew-cask for now — the tap works immediately and stays under our control; an upstream submission can follow later if wanted.