- Add orchestration function guidance to 'Keep Abstraction Levels Consistent'
section in coding policy (ja/en) — no #### nesting, integrated as paragraph
- Criterion: whether branch belongs at the function's abstraction level
- Concrete bad/good examples using pipeline pattern
- Add 1-line behavioral guideline to architecture-reviewer persona (ja/en)
- ja: 関数の責務より低い粒度の分岐が混入していたら見逃さない
- en: Do not overlook branches below a function's responsibility level
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