curl "https://api.hitler.app/api/moods/stats?days=30" \
  -H "Authorization: Bearer YOUR_TOKEN"

const stats = await api.getMoodStats({ days: 30 });

{
  "averageMood": 3.7,
  "totalEntries": 22,
  "moodTrend": "improving",
  "distribution": {
    "1": 0,
    "2": 2,
    "3": 8,
    "4": 10,
    "5": 2
  }
}