fix: repository field must be string, fix placeholder author

feat: km-tools CLI 추가 — Karpathy Pipeline 자동화 도구

feat: Karpathy Pipeline Fusion + km-* 스킬 전체 동기화

feat: vault path placeholder system + /km-update command

merge: worker ε (agents + commands)

merge: worker δ (skills small + anti-pattern)

merge: worker γ (skills large)

merge: worker β (documentation)

merge: worker α (infrastructure)

refactor(commands): placeholder-ize knowledge-manager-at.md

refactor(commands): placeholder-ize knowledge-manager-m.md (preserve Group A)

refactor(commands): placeholder-ize knowledge-manager.md (preserve Group A)

refactor(agents): placeholder-ize knowledge-manager.md

refactor(skills): rewrite km-storage-abstraction anti-pattern as generic

refactor(skills): placeholder-ize km-archive-reorganization.md