Replace hardcoded memory.dnspegasus.net references throughout README
with the generic memory.example.com placeholder (matches .env.example).
In tokens-manager.tsx, the claude-mcp-add snippet shown to users now
derives the host from PUBLIC_URL via a server-side prop instead of a
hardcoded literal, so any deployer sees their own URL in the snippet.
Prepares the repo for public mirroring.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>