Model Context Protocol Node Adds OAuth Scope Challenges

The official source reports this update: @modelcontextprotocol/node@2.1.0. Minor Changes #1624 6032170 Thanks @SamMorrowDrums ! - Add request-time OAuth scope challenges for tools, resources, resource templates, and prompts. Each primitive's scopeChallenge callback receives the parsed request and verified authentication info, then either continues or returns the exact scope set for an insufficient_scope response. requireScopes provides a small helper for static all-of checks. createMcpHandler and Streamable HTTP transports return HTTP 403 with an insufficient_scope challenge before handler execution or SSE setup.