Node의 provider progress 기반 stall timeout, watchdog fencing과 bounded health probe evidence를 실행 경로에 반영한다. Edge-Node 계약과 구현 스펙, 테스트 및 Milestone 완료 evidence를 현재 상태와 맞춘다.
Post-promotion boundary correction: replace the standalone-agent and
terminal-session wording in doc.go/types.go/main.go with provider-only,
run-scoped descriptions and add a Node CLI regression that rejects Agent
wording. Promotion and recovery evidence is preserved untouched.
