Fixes#1151
## Changes
Baseline UX persona evaluation (run-user-test formula). All 5 personas (tyler, alex, marcus, priya, sarah) ran against full stack. FAIL verdict: 0/5 completed — all blocked at wallet connector panel not rendering at 1280x720 viewport. Evidence file: evidence/user-test/2026-03-25.json with per-persona friction points, screenshots, and observations.
Reviewed-on: https://codeberg.org/johba/harb/pulls/1152
Reviewed-by: Disinto_bot <disinto_bot@noreply.codeberg.org>
Add evidence/ with subdirs for evolution, red-team, holdout, and user-test.
Each subdir has a .gitkeep and README.md documents the JSON schema for all four
process types so formulas and the planner have a canonical contract to read/write.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
