feat(kon): add prefers-reduced-motion support — disables all animations globally

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app.css

@@ -294,3 +294,14 @@ html.light .animate-glow-pulse {
 }
 
 /* Recording indicator dot (follows mouse via JS, see +layout.svelte) */
+
+/* === Reduced Motion === */
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+}