{
  "schema_version": 1,
  "selection_scope": {
    "run_count": 180,
    "episode_count": 10,
    "seed_values": [
      0,
      1,
      2
    ],
    "stress_lambdas": [
      0.0,
      0.2,
      0.4,
      0.6,
      0.8,
      1.0
    ]
  },
  "selection_principles": [
    "纵向案例固定 Episode 与 perturbation seed，覆盖 λ=0.0–1.0 的六点完整网格。",
    "横向案例固定 seed 与 λ；同 family 比较用于减少任务结构差异，跨 family 比较会显式保留 family 标签。",
    "Rebound 案例要求 C_rec 有效且具有闭合的 formal recovery window。",
    "Stability 案例同时报告单轨迹 trajectory loss 与配对后处理 beta@lambda。",
    "GE 在 task-family 的 episode×seed×lambda 网格上估计；代表轨迹用于解释边界单元，不独立承担容量估计。",
    "Thought 摘要直接抽取自 trace 中显式记录的 Thought 字段，并保留源文件路径供复核。"
  ],
  "rebound": {
    "primary_longitudinal": {
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      "perturbation_seed": 1,
      "task_family": "mixed_temporal",
      "run_keys": [
        "ep239-s1-l0.0",
        "ep239-s1-l0.2",
        "ep239-s1-l0.4",
        "ep239-s1-l0.6",
        "ep239-s1-l0.8",
        "ep239-s1-l1.0"
      ],
      "success_count": 6,
      "valid_metric_count": 6,
      "formal_window_count": 10,
      "metric_span": 93.82719000240499,
      "replan_span": 50.0,
      "score": 160.765438000481
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    "selection_reason": "Ep239/s1 提供六个 λ 的有效 C_rec、闭合恢复窗和完整成功轨迹；高应力端出现更多恢复窗与显著 C_rec 增幅，可展示恢复代价的形态变化。",
    "horizontal": {
      "fixed_seed": 1,
      "fixed_lambda": 1.0,
      "task_family": "mixed_temporal",
      "run_keys": [
        "ep239-s1-l1.0",
        "ep258-s1-l1.0",
        "ep290-s1-l1.0"
      ],
      "episode_ids": [
        239,
        258,
        290
      ],
      "criterion": "同一 mixed_temporal family 内保留 C_rec 有效且含 formal recovery window 的轨迹。"
    },
    "top_longitudinal_candidates": [
      {
        "episode_id": 258,
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          "ep258-s1-l0.6",
          "ep258-s1-l0.8",
          "ep258-s1-l1.0"
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      {
        "episode_id": 75,
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        "task_family": "placement_only",
        "run_keys": [
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        "task_family": "spatial_relation",
        "run_keys": [
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      {
        "episode_id": 98,
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        "run_keys": [
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          "ep98-s2-l0.4",
          "ep98-s2-l0.6",
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        "episode_id": 98,
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  "stability": {
    "primary_longitudinal": {
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      "perturbation_seed": 2,
      "task_family": "spatial_relation",
      "run_keys": [
        "ep144-s2-l0.0",
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        "ep144-s2-l0.4",
        "ep144-s2-l0.6",
        "ep144-s2-l0.8",
        "ep144-s2-l1.0"
      ],
      "success_count": 5,
      "trajectory_valid_count": 6,
      "beta_valid_count": 6,
      "trajectory_loss_span": 1.961633571588953,
      "beta_max": 3.300013616440321,
      "outcome_contrast": true,
      "score": 189.74657513567678
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    "selection_reason": "Ep144/s2 的六点 trajectory loss 与 beta@lambda 均有效；λ=0.2 出现完成度下降，λ=0.4 达到局部高波动，随后恢复成功，形成可解释的非单调稳定性剖面。",
    "horizontal": {
      "fixed_seed": 2,
      "fixed_lambda": 0.4,
      "run_keys": [
        "ep78-s2-l0.4",
        "ep98-s2-l0.4",
        "ep144-s2-l0.4",
        "ep239-s2-l0.4",
        "ep290-s2-l0.4"
      ],
      "episode_ids": [
        78,
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        144,
        239,
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      ],
      "families": [
        "placement_only",
        "placement_only",
        "spatial_relation",
        "mixed_temporal",
        "mixed_temporal"
      ],
      "criterion": "固定 seed=2 与 λ=0.4，保留 trajectory loss 和 beta@lambda 同时有效的最多五条轨迹；family 标签用于解释任务结构差异。"
    },
    "top_longitudinal_candidates": [
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        "success_count": 6,
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      "success_count": 6,
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    "supporting_longitudinal": {
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    "selection_reason": "Ep78/s1 为 placement_only 的六点完整成功轨迹，Ep239/s1 提供 mixed_temporal 的对应支持；两者所在 family 均具备完整 GE cell 与 capacity 支持。",
    "horizontal": {
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      "fixed_lambda": 1.0,
      "groups": {
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        },
        "mixed_temporal": {
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          ]
        }
      },
      "criterion": "分别在 placement_only 与 mixed_temporal family 内选取 GE cell/capacity 有效的高应力轨迹；family-level 边界由该 family 的完整网格给出。"
    },
    "family_boundary_support": [
      {
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        ],
        "seed_values": [
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        "capacity_supported": true,
        "boundary_lambda_star": 0.0,
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      {
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    ],
    "top_longitudinal_candidates": [
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      {
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