Group threads, which hold every project's main conversation, were never
compacted. Runs there saw only the last 200 raw messages, so the original
brief and earlier decisions fell out of context. The lead bot now
summarizes them like a bot thread; the summary stays local.
A group handoff now retries when its transaction hits a deadlock, so a
specialist that finished its work no longer fails at the hand-back.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011VfFvSskgrByEU75QLyreE
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