Add dedicated documentation pages for each cloud browser provider:
Browser Use, Browserbase, Browserless, and Kernel (sorted
alphabetically). Uses providers/ path per maintainer feedback.
- Fix Kernel defaults to match source code (KERNEL_HEADLESS=true,
KERNEL_STEALTH=false) — README had these inverted
- Add Providers section to sidebar navigation
- Simplify cdp-mode cloud providers section to link to new pages
Fixes part of #774
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
