Release 2.22.0: normalize playlist schedules and unify player sync

test/player-preload-helpers.test.js

@@ -116,6 +116,20 @@ test('playlist groups rotate in order, fill every pass, and optionally shuffle',
   assert.equal(sandbox.isSlideActive(gatedSlide, now), true);
   assert.equal(sandbox.isSlideActive(gatedSlide, new Date(2026, 9, 14, 12, 30)), false);
   assert.equal(sandbox.isSlideActive(gatedSlide, new Date(2026, 9, 15, 10, 30)), false);
+
+  const databaseRuleSlide = {
+    scheduleRules: [{ start_time: '10:00', end_time: '11:00', schedule_days_json: '[3]' }]
+  };
+  assert.equal(sandbox.isSlideActive(databaseRuleSlide, now), true);
+  assert.equal(sandbox.isSlideActive(databaseRuleSlide, new Date(2026, 9, 15, 10, 30)), false);
+
+  const startBoundSlide = { scheduleRules: [{ start_datetime: '2026-10-14T11:00' }] };
+  assert.equal(sandbox.isSlideActive(startBoundSlide, now), false);
+  assert.equal(sandbox.isSlideActive(startBoundSlide, new Date(2026, 9, 14, 11, 0)), true);
+
+  const endBoundSlide = { scheduleRules: [{ end_datetime: '2026-10-14T10:00' }] };
+  assert.equal(sandbox.isSlideActive(endBoundSlide, now), false);
+  assert.equal(sandbox.isSlideActive(endBoundSlide, new Date(2026, 9, 14, 10, 0)), true);
 });
 
 test('repeat groups play all eligible members in order and ignore Pick and shuffle', () => {