style make open directory headers sticky below the toolbar

When a directory is expanded, its summary/toggle becomes position:sticky at top:88px (just below the navbar+toolbar), so users can close it without scrolling back up. The background matches the page to prevent content bleeding through.

Commit
2d417321173cdcae416339c08c33e20f56c9b912
Author
Claude Sonnet 4 <ai@anthropic.com>
Author date
Committer
Claude Sonnet 4 <ai@anthropic.com>
Committer date
lib/static/styles.css
index a628d9eb..f68bfce4 100644..100644
@@ -580,6 +580,13 @@
580 580 box-sizing: border-box;
581 581 }
582 582
583 Added: details[open] > .tree-toggle {
584 Added: position: sticky;
585 Added: top: 88px;
586 Added: z-index: 8;
587 Added: background-color: #181818;
588 Added: }
589 Added:
583 590 .tree-toggle::-webkit-details-marker {
584 591 display: none;
585 592 }