diff --git a/.Jules/palette.md b/.Jules/palette.md
new file mode 100644
index 00000000..5674f45b
--- /dev/null
+++ b/.Jules/palette.md
@@ -0,0 +1,4 @@
+## 2026-03-18 - [Add aria-busy to loading buttons]
+
+**Learning:** Components reflecting loading state via `isLoading` or `isSubmitting` often lack the `aria-busy` attribute, which is crucial for informing screen readers about the element's busy state.
+**Action:** Add `aria-busy` attributes to button components and standalone buttons showing loading states.
diff --git a/src/components/events/EventAnnotations.tsx b/src/components/events/EventAnnotations.tsx
index 5b97c1d1..8eb0a3fd 100644
--- a/src/components/events/EventAnnotations.tsx
+++ b/src/components/events/EventAnnotations.tsx
@@ -234,6 +234,7 @@ export default function EventAnnotations({
                             <button
                                 onClick={handleSubmit}
                                 disabled={!newComment.trim() || isSubmitting}
+                                aria-busy={isSubmitting ? 'true' : undefined}
                                 className={cn(
                                     'flex items-center gap-2 rounded-lg px-4 py-2 text-sm font-semibold text-white transition-all',
                                     newComment.trim() && !isSubmitting
@@ -361,6 +362,7 @@ export default function EventAnnotations({
                                                         <button
                                                             onClick={() => handleEdit(thread.id)}
                                                             disabled={!editContent.trim() || isSubmitting}
+                                                            aria-busy={isSubmitting ? 'true' : undefined}
                                                             className="rounded-md bg-[#6C63FF] px-3 py-1.5 text-xs font-medium text-white hover:bg-[#5A52E6] transition-colors disabled:opacity-50"
                                                         >
                                                             Save
diff --git a/src/components/ui/button.tsx b/src/components/ui/button.tsx
index 0b7c2e11..6bdd6001 100644
--- a/src/components/ui/button.tsx
+++ b/src/components/ui/button.tsx
@@ -11,7 +11,7 @@ import { buttonVariants } from './button-variants'
 
 export interface ButtonProps
   extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-  VariantProps<typeof buttonVariants> {
+    VariantProps<typeof buttonVariants> {
   asChild?: boolean
   isLoading?: boolean
 }
@@ -45,6 +45,7 @@ const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
         className={cn(buttonVariants({ variant, size, className }))}
         ref={ref}
         disabled={isLoading || props.disabled}
+        aria-busy={isLoading ? 'true' : undefined}
         onClick={handleClick}
         {...props}
       >