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Garry Tan 4348b7ed70 feat(auq): defensive PostToolUse error-fallback hook (OV3:B)
When an AskUserQuestion call returns an error/missing result, this hook injects
additionalContext reminding the model to run the prose fallback for the current
SESSION_KIND. It does not render prose itself — it guarantees the reminder fires
at the moment of failure instead of relying on the model recalling SESSION_KIND.

Inert on success and inert if the platform never invokes PostToolUse on tool
errors (unverified — could not force the Conductor MCP error in a harness; see
the spike doc). The prompt-level fallback covers the case regardless. Decision
logic is unit-tested deterministically; registered in setup beside the existing
AUQ hooks.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 17:51:29 -07:00
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