{
  "columns": {
    "record_id": "string",
    "experiment": "string",
    "phase": "string",
    "seed": "int64",
    "arm": "string",
    "mode": "string",
    "n": "int64",
    "initial_nnz": "int64",
    "final_nnz": "int64",
    "nnz_gain": "int64",
    "budget": "int64",
    "cpu_budget_s": "float64",
    "work": "int64",
    "cpu_s": "float64",
    "wall_s": "float64",
    "parent_training_work": "int64",
    "parent_training_cpu_s": "float64",
    "total_work_including_parent": "int64",
    "total_cpu_including_parent_s": "float64",
    "attempts": "int64",
    "completed": "int64",
    "strict_accepts": "int64",
    "neutral_accepts": "int64",
    "unchanged": "int64",
    "worse_rejected": "int64",
    "invalid": "int64",
    "budget_interrupts": "int64",
    "cpu_interrupts": "int64",
    "tasks": "int64",
    "task_failures": "int64",
    "cross_ablation_failures": "int64",
    "kernel_work": "int64",
    "audit_work": "int64",
    "audit_wall_s": "float64",
    "operator_bytes": "int64",
    "operator_digest": "string",
    "zero_progress": "bool",
    "generator_nnz": "int64",
    "generator_changed": "bool",
    "generator_accepts": "int64",
    "auditions": "int64",
    "audition_work": "int64",
    "nested_cpu_s": "float64",
    "pair_certificate_failures": "int64",
    "source_file": "string",
    "source_pointer": "string"
  },
  "nulls": "empty CSV cells; see DATA_DICTIONARY.md for derived zero counters",
  "description": "Common schema for both viewer configurations"
}