Archive v1.1 Calendar & Polish milestone artifacts (roadmap,
requirements, phase directories) to milestones/. Evolve PROJECT.md
with validated requirements and new key decisions. Update
RETROSPECTIVE.md with v1.1 section and cross-milestone trends.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Archive roadmap and requirements to milestones/, evolve PROJECT.md
with validated requirements and decision outcomes, reorganize
ROADMAP.md with milestone grouping, create retrospective.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
