lastfm-mcp v2.6.0 — Sign-in without client registration

MCP clients can now sign in by pointing at a web address that describes them, with no registration step first. This is the method the current MCP spec prefers, and existing connections keep working as before. All five changes behind it came from Jonathan Hitchcock, the project's first outside contributor. What's new Sign-in with Client ID Metadata Documents. A client can use an HTTPS URL as its ID, and the server reads the client's name and allowed redirect addresses from the document at that URL. Some clients support nothing else. The documents Claude Code and VS Code publish are accepted as they are. If a client's document can't be fetched or doesn't validate, sign-in stops with a plain Invalid client_id error. Dynamic client registration is still on, so clients that rely on it are unaffected and nobody needs to sign in again. The landing page at lastfm-mcp.com has current setup steps for Claude, two more example questions, and a link to the privacy policy. Fixes server_info, the…