Add documentation hub + IndexNow domain-root key
Landing page linking my open-source projects (GitLab MCP Server docs) and
jmrp.io, with Person/ProfilePage JSON-LD. Hosts the IndexNow verification key
at the domain root so IndexNow host verification succeeds for project pages
under jmrplens.github.io.
Claude-Session: https://claude.ai/code/session_01PuVd2s3rFHhCb1HSz5vACK