{
  "source_run": "run_20260808_131609Z",
  "selection_rule": "Keep original even episode indices, then remove from the highest index downward until total_frames is strictly less than 2600.",
  "frame_count_source": "meta/episodes.jsonl length",
  "initial_even_episode_count": 25,
  "initial_even_total_frames": 2796,
  "removed": [
    {
      "episode_index": 48,
      "length": 78
    },
    {
      "episode_index": 46,
      "length": 99
    },
    {
      "episode_index": 44,
      "length": 80
    }
  ],
  "retained_episode_indices": [
    0,
    2,
    4,
    6,
    8,
    10,
    12,
    14,
    16,
    18,
    20,
    22,
    24,
    26,
    28,
    30,
    32,
    34,
    36,
    38,
    40,
    42
  ],
  "total_episodes": 22,
  "total_frames": 2539,
  "frame_limit": 2600,
  "preserves_original_episode_indices": true,
  "omitted_source_metadata": [
    "meta/stats.json",
    "meta/checkpoints",
    "runtime/crash/shutdown state"
  ],
  "omission_reason": "These files contain whole-run aggregate or runtime state and would be stale for this sparse subset."
}