From 70c77095a7d14da0c1342589ece7302cdc5cccb2 Mon Sep 17 00:00:00 2001
From: Rodrigo Gomes da Silva <rodrigo.smscom@gmail.com>
Date: Sun, 9 Aug 2026 18:44:58 -0300
Subject: [PATCH] fix(a11y): clear stale aria-expanded when switching panels
 (#6656)

_syncSidebarAria set aria-expanded on the newly-active rail button without
unsetting the previous one, so chat -> kanban -> skills left three buttons all
claiming aria-expanded=true. A screen reader announced three open disclosures
when only one panel owns the sidebar.

Reset every rail button that carries the attribute before setting the active
one.
---
 static/boot.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/static/boot.js b/static/boot.js
index 77fddfe2..afa2e1b0 100644
--- a/static/boot.js
+++ b/static/boot.js
@@ -529,6 +529,12 @@ function _isSidebarCollapsed(){
 function _syncSidebarAria(){
   // Mirror the open/collapsed state on the active rail button via aria-expanded
   // so screen readers announce the toggle. Open=true, collapsed=false.
+  // Clear the others first: only one panel owns the sidebar, but this used to set
+  // aria-expanded on the newly-active button without unsetting the previous one,
+  // so chat -> kanban -> skills left three buttons claiming aria-expanded=true
+  // and a screen reader announced three open disclosures.
+  document.querySelectorAll('.rail .rail-btn.nav-tab[data-panel][aria-expanded]')
+    .forEach(function(btn){ btn.setAttribute('aria-expanded','false'); });
   const active=document.querySelector('.rail .rail-btn.nav-tab.active[data-panel]');
   if(active)active.setAttribute('aria-expanded',!_isSidebarCollapsed());
 }