fix(workout): make reduced motion explicit

Add an explicit prefers-reduced-motion contract to the phone-first Workout starter and assert the served CSS carries the no-motion policy.

req: examples/001

examples/workout/templates/workout.css

@@ -270,3 +270,14 @@
     }
   }
 }
+
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    transition-duration: 0ms !important;
+    animation-duration: 0ms !important;
+    animation-iteration-count: 1 !important;
+  }
+}

examples/workout/tests/e2e.rs

@@ -70,6 +70,8 @@ fn workout_is_e2e_working_over_http() {
     assert!(css.text().contains(".command-slate"));
     assert!(css.text().contains(".finish-card"));
     assert!(css.text().contains("min-height: var(--tap)"));
+    assert!(css.text().contains("prefers-reduced-motion: reduce"));
+    assert!(css.text().contains("animation-duration: 0ms"));
 
     let runtime = get(&server, runtime_js_path());
     assert_eq!(runtime.status, 200);