Part A(web-ai heartbeat) / Part B(agent-office 집계+경보) / Part C(web-ui Three.js 대시보드). 각 Part 독립 실행·테스트 가능, 계약 2개를 Global Constraints로 잠금. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019LV86jBozkNhSFXJA412fq