- README: Update version to 8.9.x, add Equipment/Sales Portal/Circuit Builder
  sections, fix project structure, update REST endpoints and data model,
  fix clone URL to atmillertime/optical-facility-manager
- FEATURES: Rewrite for v8.9 with all current features documented including
  equipment hierarchy, crossconnects, path tracing, DLR, sales portal,
  KMZ upload, multi-service quotes, fix ITU channel count to 381
- ROADMAP: Move completed features to "Recently Completed" section with
  checkmarks, consolidate planned features, update version to 8.9.79
- BUILD: Fix clone URL placeholder

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>