From 099109cbbb164659f51d810c225ce810397e94af Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Thu, 12 Mar 2026 00:42:40 +0000
Subject: [PATCH] Palette: Add keyboard accessibility & ARIA to accordion file
 headers

* Adds role="button", tabindex="0", and aria-expanded attributes to the custom div .file-header to provide correct screen reader context.
* Adds explicit :focus-visible styling to the file headers to indicate keyboard focus.
* Implements an onkeydown event handler to support expanding/collapsing file headers using the Space and Enter keys, ensuring events that bubble up from child interactive elements are ignored.

Co-authored-by: praxstack <73683289+praxstack@users.noreply.github.com>