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Claude Code の PreCompact hook でコンテキスト圧縮(/compact・自動圧縮)の直前に作業状態を退避する実装手順 — 圧縮は止められない・stdout は注入されない・auto では custom_instructions が空、3つのハマりどころ【2026】likers

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Qiita Conference 2026 Autumn will be held!: 10/27(Tue) - 10/29(Thu)
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