feat(veridical-week7): Project Veridical Week 7 of 12 — Portability & Optimisation Consolidation Sprint

VRDCL-ESR-007 | ~4,800 words | CONFIDENTIAL — Executive Steering Committee
Reporting period: Mar 17–23, 2026 | Status: GREEN — Consolidation Week

HEADLINE: Three critical infrastructure milestones completed simultaneously
- 3-vendor embedding portability validated (OpenAI ada-002, Cohere embed-v3, Voyage AI v2)
  — all <0.5% accuracy variance, hot-swap in 14-18 min with 0 dropped queries
- Vector quantisation deployed to 100% of Pinecone index — 52% storage cost reduction
- Legal domain accuracy tuned from 90.8% to 93.1% (+2.3 pp) — exceeds ≥93% target

METRICS (Week 6 → Week 7):
- Retrieval accuracy: 92.5% → 93.2% (+0.7 pp, domain tuning)
- Query latency P95: 1.21s → 1.18s (-0.03s, stretch target ≤1.20s recaptured)
- Token cost/query: $0.024 → $0.023 (-$0.001, routing optimisation)
- Document corpus: 1.06M → 1.15M (+90K, 1.2M target on track for Week 8)
- Pilot users: 438 → 502 (+64, 500 milestone crossed, 6th dept)
- Uptime: 99.96% → 99.99% (zero downtime week)

BUDGET: $728K / $1.42M (51.3% at 58.3% schedule), CPI 1.13, SPI 1.06, EAC $1.26M
RISKS: REI 0.08 (new programme low), VR-001 recommended for CLOSURE, all risks LOW
VISIONARY: Vendor Sovereignty — 3-vendor portability creates 50× first-year ROI
  on $45K investment; $2-8M enterprise-wide savings via procurement policy change

HTML: veridical-week7.html (44 KB, dark theme, zero console errors, 9.3s load)
API: 10 endpoints all HTTP 200 (/api/veridical-week7/*, including /vendors, /domains)
REGRESSION: All 25 tested endpoint groups continue returning HTTP 200

Author: OneFineStarstuff