Combined tool analytics dashboard envelope

curl --request GET \
  --url https://api-sandbox.featherhq.com/v1/analytics/tools/dashboard \
  --header 'x-api-key: <api-key>'

{
  "summary": [
    {
      "current_invocations": 123,
      "previous_invocations": 123,
      "pct_change_invocations": 123,
      "current_errors": 123,
      "previous_errors": 123,
      "pct_change_errors": 123,
      "current_success_rate": 123,
      "previous_success_rate": 123,
      "pct_change_success_rate": 123,
      "current_avg_latency_ms": 123,
      "previous_avg_latency_ms": 123,
      "pct_change_avg_latency_ms": 123,
      "current_p95_latency_ms": 123,
      "previous_p95_latency_ms": 123,
      "pct_change_p95_latency_ms": 123,
      "current_active_tools": 123,
      "previous_active_tools": 123,
      "pct_change_active_tools": 123
    }
  ],
  "top_tools": [
    {
      "tool_id": "<string>",
      "tool_name": "<string>",
      "tool_type": "<string>",
      "invocations": 123,
      "error_count": 123,
      "success_rate_pct": 123,
      "avg_latency_ms": 123,
      "provider": "<string>"
    }
  ],
  "health_matrix": [
    {
      "tool_id": "<string>",
      "tool_name": "<string>",
      "tool_type": "<string>",
      "invocation_count": 123,
      "current_error_rate": 123,
      "previous_error_rate": 123,
      "error_trend_delta": 123,
      "success_rate_score": 123,
      "latency_score": 123,
      "error_trend_score": 123,
      "health_score": 123,
      "success_rate": 123,
      "p95_latency_ms": 123
    }
  ],
  "recent_errors": [
    {
      "timestamp": "2023-11-07T05:31:56Z",
      "tool_id": "<string>",
      "tool_name": "<string>",
      "tool_type": "<string>",
      "error_category": "<string>",
      "latency_ms": 123,
      "provider": "<string>",
      "agent_id": "<string>",
      "session_id": "<string>",
      "status_code": 123,
      "error_message": "<string>"
    }
  ]
}