Repo structure:
- 01_ground_truth: SOT, VARS JSON (BPH/UTTTL/SOI/UTTTR), QVP specs
- 02_specifications: eCRF, workflow, alerts, DB schema, API, i18n
- 03_guides: build strategy, FAQ, UAT scripts, implementation guide
- 04_clinical: clinical significance (VN), variable tables
- 05_qvp: QVP gap analysis, variable specs
- 06_uat: UAT forms, results (3 cycles), gap trackers
- 07_project: chain of custody, changelog, action plan

Verified: all data cross-checked vs SOT v2.3
Changes from v1.0: BPH 71->66, 215->299 TCs, added UTTTR cohort