docs(phase1): add comprehensive readiness validation checklist
PHASE-1_READINESS_VALIDATION_CHECKLIST.md provides structured pre-execution
validation across 6 sections:
A. Governance & Approvals (DEC-037/038/079, VersionSet)
- Validates law/compliance, calendar SLA, business sign-off
B. Infrastructure & Environment (PostgreSQL, Host, Frontend)
- Database connectivity, migration 0032, Host startup, Hangfire
C. Tools & Scripts Validation (freeze, generate, runbook)
- Script syntax, dry-run test, error handling, execution procedure
D. Data Quality & State Validation (Model/Dataset, PIT queries)
- Model card, dataset manifest, market data completeness, audit trail
E. Monitoring & Observability (Logging, metrics, alerts)
- Structured logging, Grafana dashboard, on-call setup (recommended)
F. Final Readiness Sign-offs
- Go/No-Go decision matrix with stakeholder approvals
- Launch window, emergency contacts, expected completion timeline
Features:
- 40+ detailed check items across governance + technical + operations
- Sign-off blanks for traceability
- Error handling matrix for common blockers
- Reference links to supporting docs
AGENTS.md: Necessity (real validation gap), Maturity (checklist before execution),
Traceability (approval audit trail), Right-Way (documented procedure vs ad-hoc).
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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