Site v0.2.3 — Canonical domain LIVE

Production milestone. Site is now live on the canonical calibrationledger.com (was: only calibrationledger-com.pages.dev). Added 2 CNAME records in Cloudflare DNS (apex @ + www, both Proxied + TTL Auto, pointing at calibrationledger-com.pages.dev) via Chrome MCP at operator's explicit direction. Verified: https://calibrationledger.com/ → HTTP/2 200; https://www.calibrationledger.com/ → HTTP/2 200; dig resolves both to Cloudflare proxy IPs (104.21.4.230, 172.67.132.148); verify-live.sh https://calibrationledger.com → 66/66 ALL PASS on the canonical domain — every endpoint, every security header, the Atom feed, the citation triple (BibTeX + RIS + CFF), the SHA-256 @graph integrity, all 3 rel=me identity links, all live. Operator P0 list collapses from 4 → 3: Cloudflare Email Routing, social handles @calibrationledger, GitHub remote creation under acevaultorg + push remain.