Update agent-browser skill with v0.18.0 features (auto-connect, auth vault, etc.)

[mattsilv]

Summary

The agent-browser SKILL.md is missing several features available in agent-browser v0.18.0. The most notable addition is --auto-connect, which lets you reuse a running Chrome's auth state — great for OAuth/MFA/SSO flows.

Missing features

• --auto-connect / AGENT_BROWSER_AUTO_CONNECT — auto-discover and connect to running Chrome
• --profile — persistent login sessions (cookies, IndexedDB, cache)
• --session-name — auto-save/restore cookies and localStorage
• --state — load saved auth state from JSON
• Auth vault commands (auth save/login/list/show/delete)
• keyboard type/inserttext — keystrokes without selector
• upload, download, focus, connect commands
• diff commands (snapshot, screenshot, url comparison)
• inspect — open Chrome DevTools
• profiler start/stop — Chrome DevTools profiling
• --annotate — labeled screenshots for vision models
• wait --load networkidle
• --proxy / --proxy-bypass
• --extension — browser extensions
• -p ios — iOS simulator support
• --config — config file support
• --allowed-domains, --confirm-actions, confirm/deny — security/safety
• Command chaining examples
• find first/last/nth locators
• snapshot -s (selector scoping)

How to verify

agent-browser --version  # 0.18.0
agent-browser --help     # shows all features above

[mattsilv]

Worth noting: there's nothing custom in the agent-browser SKILL.md — it's a hand-maintained copy of what agent-browser --help already outputs. Rather than manually keeping it in sync, it might make sense to auto-generate or pull the skill docs from agent-browser's own help/docs upstream so it stays current automatically.