Remove stray diagnostic script committed by accident

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

_diag3.mjs

@@ -1,15 +0,0 @@
-import { chromium } from 'playwright';
-const b = await chromium.launch();
-const p = await b.newPage({ viewport: { width: 1200, height: 900 } });
-await p.goto('http://localhost:3107/?t=' + Math.floor(Math.random()*1e9), { waitUntil: 'networkidle' });
-const mine = p.locator('.card', { hasText: 'you should ask hard questions' }).first();
-const r = await mine.evaluate(el => ({
-  inlineTextAlign: el.style.textAlign,
-  inlinePadding: el.style.padding,
-  inlineBorderColor: el.style.borderColor,
-  cssTextLen: el.style.cssText.length,
-  cssText: el.style.cssText,
-  computed: getComputedStyle(el).textAlign,
-}));
-console.log(JSON.stringify(r, null, 2));
-await b.close();