curl -X GET "https://api.hitler.app/analytics/comparison?timeRange=30d" \
  -H "Authorization: Bearer YOUR_TOKEN"

{
  "taskMetrics": {
    "totalCreated": 245,
    "totalCompleted": 198,
    "completionRate": 81,
    "avgCompletionTime": 24,
    "overdueCount": 12
  },
  "moodMetrics": {
    "averageScore": 3.7,
    "totalResponses": 156,
    "trend": "up",
    "distribution": [...]
  },
  "teamMetrics": {
    "activeUsers": 18,
    "totalUsers": 24,
    "topPerformers": [...]
  },
  "flagMetrics": {
    "total": 15,
    "bySeverity": [...],
    "resolved": 11,
    "pending": 4
  },
  "comparisons": {
    "tasksCreated": {
      "current": 245,
      "previous": 210,
      "change": 35,
      "changePercent": 17,
      "trend": "up"
    },
    "tasksCompleted": {
      "current": 198,
      "previous": 175,
      "change": 23,
      "changePercent": 13,
      "trend": "up"
    },
    "completionRate": {
      "current": 81,
      "previous": 83,
      "change": -2,
      "changePercent": -2,
      "trend": "stable"
    },
    "moodAverage": {
      "current": 3.7,
      "previous": 3.4,
      "change": 0.3,
      "changePercent": 9,
      "trend": "up"
    },
    "activeUsers": {
      "current": 18,
      "previous": 16,
      "change": 2,
      "changePercent": 13,
      "trend": "up"
    },
    "flagsCreated": {
      "current": 15,
      "previous": 22,
      "change": -7,
      "changePercent": -32,
      "trend": "down"
    }
  }
}