v1.6.0

The hosted MCP server now speaks both protocol eras on one endpoint: 2026-07-28 Modern clients (per-request metadata, server/discover, no handshake) and legacy initialize clients are served concurrently — nothing to change on your side. Tool surface unchanged at 16 tools with identical definitions. Descriptions across the artifacts move to the DNS-wide positioning: scan, fix and verify your domain's DNS — email authentication first, plus global propagation, DNS health and expiry.