🎉 Version 2.1

Changed

• GitHub Pages hero now embeds the real SRS Navigator. Both docs/index.html and
  docs/app.html replace the hand-built CSS mock of the CP → CN → FR chain with an
  iframe of the genuine navigator (docs/navigator-embed.html). Its own force-directed
  intro animation builds the traceability chain live: Customer Problems reveal first,
  then the Customer Needs that address them, then the Functional and Non-Functional
  Requirements that satisfy them, with links forming between tiers.

Added

• scripts/build-navigator-embed.mjs: generator that renders the real navigator to
  docs/navigator-embed.html from the extension's own parser, renderer, and
  demo-spec modules against the bundled CRM demo specification. The canvas app itself
  is unchanged.