Vincent's commit ab1d1a5c9e (#71560) added user-facing config keys to
existing-session profiles for the Chrome DevTools MCP launch path:
- browser.profiles.<name>.mcpCommand
- browser.profiles.<name>.mcpArgs
Plus runtime behavior changes:
- cdpUrl http(s) -> --browserUrl, cdpUrl ws(s) -> --wsEndpoint
- endpoint flags and userDataDir are mutually exclusive
The CHANGELOG entry covered the change, but docs/tools/browser.md
existing-session reference did not. Add a 'Custom Chrome MCP launch'
subsection describing the new fields and the cdpUrl endpoint mapping
rules.