* fix(mcp): use computed base_internal_url instead of static default Pass the actual base_internal_url (computed from the runtime port) to the MCP backend instead of using the static BASE_INTERNAL_URL which defaults to http://localhost:8000. This fixes internal API calls when the server runs on a non-default port. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix * remove BASE_INTERNAL_URL --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>