GTM API / Rotate antidetect browser proxy

Rotate an antidetect browser onto another MANAGED proxy of the SAME country. Geo-binding is preserved, so this is the safe way to drop a flagged IP. Omit antidetect_browser_proxy_sid to take the least-loaded active proxy of that country, or pin one (a pin from another country is refused, 422 proxy_country_mismatch). Only a browser whose profile we hold (browser_owner=platform or adopted): a profile you own at GoLogin keeps its proxy there, 422 managed_proxy_forbidden_for_owner; a row that never got a managed proxy is 422 proxy_not_managed; a country with no other active proxy is 422 proxy_replacement_unavailable. A running browser is stopped and started again so the new IP takes effect; result.restarted reports whether it came back. Contract: - MCP tool replace_antidetect_browser_proxy, registry package mcp.linkedin/antidetect_browsers, mount linkedin.browsers. - Operation action, response envelope action. - Flags: dangerous: the MCP layer gates it behind a preview/commit token, and the effect cannot be undone through this API.