Add complete URT v5.1 taxonomy framework (11 artifacts)
Universal Review Taxonomy v5.1 implementation with:
- Track A (Training): A1 Quickstart, A2 QA Protocol, A3 Calibration Set, A4 Full Manual
- Track B (Engineering): B1 Code Registry, B2 Database Schema, B3 Owner Routing, B4 API Contract
- Track C (Analytics): C1 Issue Lifecycle, C2 KPI Mapping Guide
- Track D (Integration): D1 Dashboard Specification
Covers 7 domains, 28 categories, 138 subcodes, 16 causal codes, and 7 metadata dimensions.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
3eda9bdbfa