Anthropic may have forgotten to read their GitHub issues for two months

TL;DR — four prompts, four answers This entire investigation was four prompts I gave Claude (claude.ai, Sonnet 4.6) in Japanese. Here's the short version: 🇯🇵 Anthropic の claude code のリポジトリの Issue を巡回する公式 bot について質問させてください。Duplicated の検出や自動 Close について、いつからか止まっていませんか？ 🇬🇧 "Has the duplicate detection bot in the Claude Code repo stopped working at some point?" → Yes. It went silent around January 27, 2026 and stayed down until ~April 1. 🇯🇵 その前後の Claude Code のバージョンと、大きな構造的な変化はありますか？ 🇬🇧 "Were there any major structural changes around that time?" → v2.1.0 shipped on Jan 27 — 1,096 commits, npm deprecated, native binary. The bot broke the same day. 🇯🇵 このことを指摘している Issue はありますか？ 🇬🇧 "Are there any Issues pointing this out?" → No. Nobody noticed publicly for two months. 🇯🇵 では、Github Issue 上ではなくブログポストではどうでしょうか？ 🇬🇧 "What about blog posts?" → Nothing. You're reading the first one. What happened between those prompts was a multi-turn conversation in which Claude Sonnet 4.6 performed th