Distillation

Date: Sep 16, 2026

• 🟡 (22:45) User provided a TypeScript file excerpt spanning lines 8669–9630 that validates and reconciles streamed Responses API lifecycle events, including response.reasoning_text, response.output_text, response.content_part.added, response.failed, and terminal response data.
• 🟡 (22:45) The supplied code tracks per-output lifecycle state via lifecyclesFor(acc).get(outputIndex), content state keyed by outputIndex:contentIndex, and reasoning-summary state keyed by summaryIndex; it compares authoritative, delta-assembled, part-final, and terminal values and throws on inconsistencies or non-contiguous summaries.
• 🟡 (22:45) Exact validation errors visible in the supplied excerpt include Responses content_part.added changed initial content for index ${outputIndex}:${contentIndex}, Responses reasoning summary part changed content for index ${outputIndex}:${summaryIndex}, non-contiguous Responses reasoning summary for index ${outputIndex}, and Responses terminal changed ${description}.
• 🟡 (22:45) The terminal reconciliation path calls completedReasoningSummary(lifecycle, outputIndex, true), performs additional checks when opts.validation === "public" && response.status === "completed", invokes onMatched?.(outputIndex, reconciledActual), and defines consumeReferenceEvent.