feat(harness): add Action Recognition training experiment

- PerCategoryPoolStrategy: filter test pool by task_types
- RunConfig: add run_holdout_eval toggle (default true)
- load_config: fix YAML task_types list-to-tuple conversion
- Runner: conditionally skip _holdout_four_way when disabled
- CLI: add --no-run-holdout-eval flag
- New config/train_action_recognition.yaml (3 epochs, per_category)
- New scripts/train_action_recognition.sh (baseline + seed + train)

research-wiki/index.md

@@ -1,8 +1,8 @@
 # Research Wiki 索引
 
-> 自动生成，更新时间：2026-07-12 02:57 UTC
+> 自动生成，更新时间：2026-07-14 04:50 UTC
 
-## design (21)
+## design (24)
 - [2026-07-06-core-agent-adapters-llm-design](designs/2026-07-06-core-agent-adapters-llm-design.md) `design:2026-07-06-core-agent-adapters-llm-design`
 - [2026-07-07-app-harness-design](designs/2026-07-07-app-harness-design.md) `design:2026-07-07-app-harness-design`
 - [2026-07-07-core-evolution-design](designs/2026-07-07-core-evolution-design.md) `design:2026-07-07-core-evolution-design`
@@ -11,8 +11,11 @@
 - [2026-07-11-agent-runtime-fixes-design](designs/2026-07-11-agent-runtime-fixes-design.md) `design:2026-07-11-agent-runtime-fixes-design`
 - [2026-07-11-batch-tree-build-design](designs/2026-07-11-batch-tree-build-design.md) `design:2026-07-11-batch-tree-build-design`
 - [2026-07-11-question-gen-v2-design](designs/2026-07-11-question-gen-v2-design.md) `design:2026-07-11-question-gen-v2-design`
+- [2026-07-12-per-category-pool-strategy-design](designs/2026-07-12-per-category-pool-strategy-design.md) `design:2026-07-12-per-category-pool-strategy-design`
+- [Action Recognition 单题型首次训练实验设计](designs/2026-07-14-action-recognition-training-design.md) `design:2026-07-14-action-recognition-training-design`
 - [main.py 推理入口 + 初始 Prompt 集设计](designs/2026-07-09-main-inference-entry-design.md) `design:2026-07-09-main-inference-entry-design`
 - [main.py 推理入口 + 初始 Prompt 集设计](designs/main-inference-entry.md) `design:main-inference-entry`
+- [Per-Category Pool Strategy 设计](designs/per-category-pool-strategy.md) `design:per-category-pool-strategy`
 - [Spec-1 Agent 执行环境修复（解析容错+步级重试+摘要附实体）](designs/agent-runtime-fixes.md) `design:agent-runtime-fixes`
 - [Spec-2 建树批量并行入口](designs/batch-tree-build.md) `design:batch-tree-build`
 - [Spec-3 出题管线 v2（失败机理靶向+逐题质量门）](designs/question-gen-v2.md) `design:question-gen-v2`
@@ -31,7 +34,7 @@
 - [Harness 评估: Spec-1 修复验证 (infer_spec1check)](findings/eval-spec1check.md) `finding:eval-spec1check`
 - [Harness 评估: Spec-2 批量并行建树](findings/eval-spec2-batch-tree-build.md) `finding:eval-spec2-batch-tree-build`
 
-## plan (22)
+## plan (26)
 - [2026-07-06-core-agent-adapters-llm](plans/2026-07-06-core-agent-adapters-llm.md) `plan:2026-07-06-core-agent-adapters-llm`
 - [2026-07-07-app-harness](plans/2026-07-07-app-harness.md) `plan:2026-07-07-app-harness`
 - [2026-07-07-core-evolution](plans/2026-07-07-core-evolution.md) `plan:2026-07-07-core-evolution`
@@ -42,10 +45,14 @@
 - [2026-07-09-tree-repair-resilience](plans/2026-07-09-tree-repair-resilience.md) `plan:2026-07-09-tree-repair-resilience`
 - [2026-07-11-agent-runtime-fixes](plans/2026-07-11-agent-runtime-fixes.md) `plan:2026-07-11-agent-runtime-fixes`
 - [2026-07-11-batch-tree-build](plans/2026-07-11-batch-tree-build.md) `plan:2026-07-11-batch-tree-build`
+- [2026-07-12-per-category-pool-strategy](plans/2026-07-12-per-category-pool-strategy.md) `plan:2026-07-12-per-category-pool-strategy`
+- [2026-07-14-action-recognition-training](plans/2026-07-14-action-recognition-training.md) `plan:2026-07-14-action-recognition-training`
+- [Action Recognition 单题型首次训练实验计划](plans/action-recognition-training.md) `plan:action-recognition-training`
 - [app/harness/ 训练循环编排层实现计划](plans/app-harness.md) `plan:app-harness`
 - [app/search/ 搜索 Agent 装配层实现计划](plans/2026-07-07-search-module.md) `plan:2026-07-07-search-module`
 - [core/agent/ + adapters/llm 基础设施实现计划](plans/core-agent-adapters-llm.md) `plan:core-agent-adapters-llm`
 - [main.py 推理入口 + 初始 Prompt 集实现计划](plans/main-inference-entry.md) `plan:main-inference-entry`
+- [Per-Category Pool Strategy 实现计划](plans/per-category-pool-strategy.md) `plan:per-category-pool-strategy`
 - [question_gen 模块实现计划](plans/question-gen.md) `plan:question-gen`
 - [Spec-1 Agent 执行环境修复实现计划](plans/agent-runtime-fixes-plan.md) `plan:agent-runtime-fixes-plan`
 - [Spec-2 建树批量并行实现计划](plans/batch-tree-build-plan.md) `plan:batch-tree-build-plan`