Windows Server 2025; Playwright headless Chromium; 1440x1000; dark theme.
Both sides use an isolated fresh T3 home with seeding disabled and devReplay showcase.
Synthetic git repository: C:\repo, committed apps/web/src/index.ts, then one appended line.
Open Windows diff copy thread by its environment/thread link, Ctrl+D, Changes vs Automatic.
Click Copy file path in the file header, expand the file for readability, read navigator.clipboard.readText(), paste into the composer with Ctrl+V.
Base expected bug: apps/web/src/index.ts
Head expected fix: apps\web\src\index.ts