Platform-wide impact statistics.
Authorization: Bearer <token> (admin only)
{
"totalUsers": 1250,
"totalTasks": 340,
"totalCompletions": 2800,
"totalRewardsPaid": 140000,
"treesPlanted": 5200,
"plasticCollected": 1800,
"co2Reduced": 4500,
"activeValidators": 85
}Task completion and reward distribution data.
User growth and engagement metrics.