A user-initiated denial (Deny & simplify) came back as an isError
tool_result and rendered as a prominent expanded-red "Bash · error"
block — pure noise, since the user chose it. It now folds to a muted,
collapsed "denied" card.
Built as a reusable filter rather than string-matching the note: DenyTool
carries a `quiet` flag, the session collects quiet denials' tool_use_ids,
and ConversationView renders any error whose id is in that set folded +
muted. Genuine tool failures (ids not in the set) keep the expanded-red
treatment. Adding future "expected error" cases is just adding ids.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
3b23da052e