Improvement Learner

当需要检查 skill 质量评分、自动优化 SKILL.md 结构、追踪评估分数变化趋势、或「评分低了想知道哪里扣分」时使用。6维结构评估 + HOT/WARM/COLD 三层记忆 + Pareto front。不用于候选语义打分（用 improvement-discriminator）或全流程编排（用 improvement-orchestrator）。

Real Karpathy self-improvement loop: evaluate → modify → re-evaluate → keep/revert → repeat.

When to Use

• 查看一个 skill 在 6 个维度上的质量评分
• 运行自动改进循环（Pareto front 保护，不允许任何维度回退）
• 追踪 skill 评估分数的历史变化

When NOT to Use

• 给改进候选打语义分 → use improvement-discriminator
• 跑全流程（生成→打分→门禁→执行） → use improvement-orchestrator
• 只想改一个文件 → use improvement-executor

6 Evaluation Dimensions

Dimension	Checks	Pure-text default
accuracy	15 items: frontmatter(3), symptom-driven desc, When to Use/Not, code examples, Usage, few-shot, no vague language, min length, Related Skills, Output Artifacts, atomicity	—
coverage	SKILL.md = 60% base + scripts/references/tests/README bonuses	—
reliability	pytest pass=1.0, fail=0.5	1.0 (pure-text)
efficiency	Line count: ≤200=1.0, ≥1200=0.3	—
security	No api_key/password/sk- in SKILL.md, no os.system()/exec()	—
trigger_quality	Description length, triggers field, disambiguation	—

Three-Layer Memory

Layer	Capacity	Behavior
HOT	≤100	Always loaded, frequently accessed patterns
WARM	Unlimited	Overflow from HOT, loaded on demand
COLD	Archive	>3 months inactive (future)

<example> 正确用法: 评估一个 skill 的质量 $ python3 scripts/self_improve.py --skill-path /path/to/skill --max-iterations 1 → 输出 JSON: {"final_scores": {"accuracy": 0.83, "coverage": 1.0, "reliability": 1.0, ...}} → accuracy 0.83 说明 SKILL.md 缺少部分检查项（如 Output Artifacts 或 Related Skills） </example> <anti-example> 错误判读: 纯文本 skill 的 reliability=1.0 不代表质量好 → 纯文本 skill 没有 scripts/，reliability 默认 1.0（没有代码就不需要测试） → 真正有意义的维度是 accuracy 和 trigger_quality </anti-example>

CLI

# 评估（不改动，只看分数）
python3 scripts/self_improve.py --skill-path /path/to/skill --max-iterations 1

# 自改进循环（5 轮）
python3 scripts/self_improve.py \
  --skill-path /path/to/skill \
  --max-iterations 5 \
  --memory-dir /path/to/memory \
  --state-root /path/to/state

# 追踪历史
python3 scripts/track_progress.py --skill-path /path/to/skill --output progress.json

Output Artifacts

Request	Deliverable
Evaluate	JSON with 6-dimension scores (0.0-1.0 each)
Self-improve	JSON: iterations, kept/reverted/skipped, final_scores, memory stats
Track progress	JSON with historical scores and trend data

Related Skills

• improvement-discriminator: Semantic scoring (LLM judge); learner focuses on structural quality
• improvement-orchestrator: Full pipeline; learner provides standalone quality scoring used by autoloop-controller and self-improvement loop (not a stage in the orchestrator pipeline)
• benchmark-store: Pareto front data shared between learner and benchmark-store