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Lifecycle hook (gap #18) — fired as the input JSON streams in token-by-token (StreamEvent.ToolInputDelta). The accumulated input isn't yet valid JSON; this is for raw-character pre-warm. No-op by default.
Lifecycle hook (gap #18) — fired as the input JSON streams in token-by-token (StreamEvent.ToolInputDelta). The accumulated input isn't yet valid JSON; this is for raw-character pre-warm. No-op by default.