Add agent-browser extension

[0xdhrv]

Description

Screencast

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulations on your new Raycast extension! 🚀

We're currently experiencing a high volume of incoming requests. As a result, the initial review may take up to 15 business days.

Once the PR is approved and merged, the extension will be available on our Store.

[greptile-apps]

Greptile Summary

The PR adds an Agent Browser extension with a no-view command and AI tools for opening, inspecting, interacting with, and closing isolated browser sessions.

• Adds the extension manifest, preferences, documentation, media, and build configuration.
• Wraps the agent-browser CLI with session validation, structured output handling, and execution limits.
• Adds confirmation-gated page interactions and virtual-keyboard input with post-action verification.

Confidence Score: 5/5

The PR appears safe to merge because no blocking failure remains from the previous review findings.

The manual preference and argument declarations were removed in favor of generated Raycast types, and the unused @raycast/utils dependency was removed from both the manifest and lockfile.

Important Files Changed

Filename	Overview
extensions/agent-browser/package.json	Defines the command, AI tools, preferences, supported platforms, dependencies, and standard extension scripts.
extensions/agent-browser/src/lib/agent-browser.ts	Provides the shared agent-browser process wrapper, session normalization, output parsing, and execution-error formatting.
extensions/agent-browser/src/tools/interact-with-page.ts	Implements confirmation-gated page interactions with element-ref validation and configurable post-action waits.
extensions/agent-browser/src/tools/type-with-keyboard.ts	Implements validated virtual-key input, optional submission, settling delays, and verification snapshots.
extensions/agent-browser/ai.yaml	Defines AI usage instructions and evaluations for browser navigation, interaction, and session closure.

_{Reviews (2): Last reviewed commit: "refactor(types): centralize shared argum..." | Re-trigger Greptile}