Error Aggregation and Reporting

Aggregate these errors for reporting:

ERRORS FROM BATCH:
[List of errors from a batch run]

AGGREGATE:
{
  "summary": {
    "total_items": number,
    "successful": number,
    "failed": number,
    "error_rate": percentage
  },
  "error_breakdown": [
    {
      "error_type": "string",
      "count": number,
      "percentage": number,
      "example": "one example error",
      "affected_items": ["ids"]
    }
  ],
  "trends": {
    "increasing": ["error types getting worse"],
    "decreasing": ["error types improving"],
    "new": ["first-time errors"]
  },
  "recommendations": [
    {
      "priority": "high | medium | low",
      "action": "what to do",
      "expected_impact": "how many errors this fixes"
    }
  ]
}

ALERT THRESHOLDS:
- Critical if: [condition]
- Warning if: [condition]