Standardized YAML frontmatter on all 115 sprint briefing files across
sprints 1-26 with title, description, type, status, sprint number, and
team fields.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
10 tickets across server (6), client (3), copy (1).
Capstone sprint for v0.1 — everything converges on a full
playthrough from main menu through storyteller activation.
Closed stale epics: #38, #369, #455, #575, #596.
Sprint goal: wire TriangleActivated into player-visible signal,
thread character archetype through session lifecycle.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>