feat(veridical-week4): Project Veridical Week 4 of 12 Executive Status Report — 4,800-word data-driven RAG implementation status with XML-tagged Markdown

Report: VRDCL-ESR-004 — Enterprise RAG implementation weekly executive status
Audience: Executive Steering Committee, Board AI Oversight, Senior Engineering Leadership

Data Object (VERIDICAL_WEEK4):
- Strategic Reasoning: 2,042-char calibration rationale (EVM principles, Gartner benchmarks)
- Section 1 — Project Health: 4 execution tracks (Infrastructure, Ingestion, Retrieval,
  Governance), earned-value metrics (CPI 1.13, SPI 1.02, EAC $1.26M), 8-milestone timeline
- Section 2 — Key Metrics: 6 dashboard metrics with WoW trends
  • P95 latency 1.18s | Accuracy 87.4% | Cost $0.023/query
  • Uptime 99.97% | Corpus 847K docs | Adoption 284 users
- Section 3 — Critical Risks: REI 0.14, 2 medium + 3 low risks
- Section 4 — Next Steps: 7 Week 5 objectives, 2 decisions, 4-week look-ahead

API: 7 endpoints /api/veridical-week4/{meta,health,metrics,risks,next-steps,reasoning}
HTML: dark-theme executive dashboard, zero console errors
Verification: All endpoints HTTP 200

Author: OneFineStarstuff