feat(veridical-board-briefing): Board Executive Briefing — Week 4 of 12 with Cryptographic Provenance & Compute Governance themes

Report: VRDCL-BRD-004 — Project Veridical Board Executive Briefing (Week 4 of 12)
Classification: CONFIDENTIAL — Board of Directors
Audience: Board of Directors, Audit Committee Chair, CEO, CFO
Word Count: ~480 words | Format: Markdown in XML semantic tags

Content (5 sections + 2 visionary themes):
- Strategic Reasoning: Rationale for distilling 4,800-word technical report into board-readable narrative; justification for Cryptographic Provenance and Compute Governance theme selection
- Health: GREEN, CPI 1.13, SPI 1.02, EAC $1.26M ($163K projected underrun)
- Metrics Table: Query Latency P95 1.18s (GREEN), Retrieval Accuracy 87.4% (GREEN), Token Cost $0.023/query (GREEN) — all with board-contextualized notes
- Risks: REI 0.14, 0 critical, 2 medium (VR-001 embedding lock-in, VR-002 accuracy plateau)
- Next Steps: 4 Week 5 objectives, 2 board-level decisions (reranker vendor Mar 10, Legal scope Mar 14)

Visionary Themes:
1. Cryptographic Provenance — Merkle-tree hashed provenance chains, EU AI Act Art. 13 / SEC Rule 10b-5(AI) compliance, $40-80M retrofit avoidance
2. Compute Governance — Tiered routing (78% GPT-4o-mini / 22% GPT-4o), semantic caching, 6.5x efficiency gain ($141K vs $1.04M naive scaling)

Companion: VRDCL-ESR-004 (Full Technical Report)

API Endpoints (10, all HTTP 200):
  /api/veridical-board-briefing (full), /meta, /reasoning, /health, /metrics, /risks, /next-steps, /visionary, /visionary/provenance, /visionary/compute

HTML: veridical-board-briefing.html (28KB, dark-theme gold accent, zero console errors, 11.5s load)

Author: OneFineStarstuff