feat: add week 3 audio and timeline enhancements

backend/tests/test_reading_events.py

@@ -65,6 +65,23 @@ async def test_create_reading_event_updates_stats_and_memory(
             assert len(items) == 1
             assert items[0].type == "recent_story"
             assert items[0].value["story_id"] == test_story.id
+            assert items[0].value["mode"] == test_story.mode
+            assert items[0].value["reading_time"] == 120
+            assert items[0].value["source"] == "reading_event"
+
+            timeline_response = await client.get(f"/api/profiles/{profile_id}/timeline")
+            assert timeline_response.status_code == 200
+            timeline_events = timeline_response.json()["events"]
+            reading_events = [
+                event for event in timeline_events if event["type"] == "reading_event"
+            ]
+            memory_events = [event for event in timeline_events if event["type"] == "memory"]
+            assert reading_events
+            assert memory_events
+            assert reading_events[0]["metadata"]["story_id"] == test_story.id
+            assert reading_events[0]["metadata"]["reading_time"] == 120
+            assert memory_events[0]["metadata"]["memory_type"] == "recent_story"
+            assert memory_events[0]["metadata"]["story_id"] == test_story.id
 
             response = await client.post(
                 "/api/reading-events",