Exportable Verified ROI · before → after

verified winΔ -100% over 28d

IL Apartments

drizzle bound a JS array as ONE scalar param so ANY($1::uuid[]) always failed — /compare?ids= 500d on every request; and loadCityStats read 0 listings as "no such city" so /city 404d for 4 of 8 top cities linked from every /deals page

Verified ROI · before → after · 28d horizon

Before

27

broken links

-100%

After

0

broken links

Closed loop — score → ship → re-score → close. Measured move after auto-verify, not monitoring alone.

Before: measured 10 Aug over a crawl of 1,302 links / 1,040 pages. After: measured 07 Sept over a crawl of 1,506 links / 1,206 pages.

Graded by Growth Radar auto-verify writeback after the change cleared its scoring horizon — before → after on the metric the change was meant to move. Same Verified ROI as the in-app badge; the closed loop (score → ship → re-score → close) is the shareable foil for monitoring-only tools. After another horizon, a half-life re-check stamps still_holding + decay — intervention decay vs Profound Citation Decay.