Scoped the vertical slice: 16 EntityKnowledge keys, v0.1 mechanical NPC mapping, YAML content format, 7-verb interaction model, server- authoritative pause, 38 tickets created across copy/server/client/ci. 20 decisions (D-042 through D-061). 8 agents, 2 rounds + closing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>