JS mouseenter/mouseleave handlers were setting row.style.backgroundColor
inline, fighting with the CSS tr:hover rule. On mouseleave both fired
simultaneously causing a double repaint / blink. Removed the redundant
JS handlers — the CSS tr:hover transition already handles this cleanly.
Also removed body flicker animation from base.css (was still present
after being removed from dashboard.css).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>