MCP goes stateless + 2026-07-28 spec release candidate

The protocol layer is now stateless: remote MCP servers run behind plain round-robin load balancers, no sticky sessions. Plus MCP Apps (server-rendered UI), a Tasks extension for long-running work, and OAuth/OIDC-aligned auth.

What it means The substrate Intel's own agent-facing MCP layer will sit on. Stateless + Apps + Tasks materially simplify hosting a daily-accumulating, agent-queryable KB.