diff --git a/.Jules/palette.md b/.Jules/palette.md
new file mode 100644
index 00000000..8d06cc6a
--- /dev/null
+++ b/.Jules/palette.md
@@ -0,0 +1,3 @@
+## 2026-06-27 - Added Action Menu Accessible Name and Properties
+**Learning:** For a toggle trigger that expands a menu, it is critical to expose standard a11y properties including aria-label for its action, aria-expanded reflecting its state, aria-haspopup for its function, and to hide pure decorative internal icons like MoreHorizontal from screen readers.
+**Action:** Apply this pattern to all context/action menus toggle triggers consistently.
diff --git a/src/components/events/EventAnnotations.tsx b/src/components/events/EventAnnotations.tsx
index aefd7007..88ded451 100644
--- a/src/components/events/EventAnnotations.tsx
+++ b/src/components/events/EventAnnotations.tsx
@@ -325,8 +325,11 @@ export default function EventAnnotations({
                                 setShowActionsFor(showActionsFor === thread.id ? null : thread.id)
                               }
                               className="rounded-lg p-1.5 text-[#9CA3AF] hover:bg-[#F8FAFC] hover:text-[#666666] transition-colors"
+                              aria-label="More actions"
+                              aria-expanded={showActionsFor === thread.id}
+                              aria-haspopup="menu"
                             >
-                              <MoreHorizontal className="size-4" />
+                              <MoreHorizontal className="size-4" aria-hidden="true" />
                             </button>
 
                             <AnimatePresence>