Harvested the narrow Rust/docs slice of PR #2578 by @AresNing for #1364. The event uses the maintained structured observer path: JSON stdin, stdout ignored, warn-only failures, and no ability to block or mutate the turn.
The hook fires after post-turn app state, usage totals, cost, notification, receipt, and queue-recovery state are updated, before queued follow-up dispatch. Docs, RFC notes, /hooks discovery, and v0.9 tracking now describe the observer-only contract.
Co-authored-by: AresNing <49557311+AresNing@users.noreply.github.com>
Hunter B
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