- Add .devcontainer configuration with Chrome dependencies
- Create post-create script to install Chrome and required libraries
- Update BrowserSession.ts with sandbox flags for container environments
- Update UrlContentFetcher.ts with container-specific Chrome flags
- Add documentation for Codespaces setup
This fixes the issue where the browser tool would fail in GitHub Codespaces
due to missing Chrome/Chromium dependencies like libatk-1.0.so.0.
Fixes#7990
