/**
 * `@github/copilot` normalizer — ADR 0062 slice 3, reference dialect A.
 *
 * Copilot runs in-process through `copilot-sdk`: the mind source is its own
 * `SessionEvent` stream (`session.on(...)`, or the `events.jsonl` transcript it
 * writes), and restore is the SDK's `resumeSession(id)` (the `sessionFsProvider`
 * seam is the same call under a different persistence root, so the resume shim is
 * identical). Copilot both streams and resumes-by-id → it advertises
 * `durable-resume`.
 *
 * ## Resume-critical fidelity: `reasoningOpaque`
 *
 * ADR 0062 §5 lets a native adapter *prefer the native transcript for restore*
 * when it carries more than the ACP models. Copilot's reasoning events carry a
 * `reasoningOpaque` blob — the provider reasoning-continuation handle that must
 * be replayed verbatim to continue the model's reasoning across a resume. The
 * canonical `ReasoningEvent` has a home for exactly this (`providerContinuation`),
 * so we map it straight through, untouched. Dropping it (as a lossy ACP
 * projection might) would silently break reasoning continuation on resume — so
 * this dialect is the authoritative ingestion path for Copilot.
 */
import type { HarnessNormalizer } from "./types.ts";
/**
 * The `@github/copilot` fallback normalizer. `streaming`/`resumeById` are both
 * true, so {@link capabilityProbe} derives `durable-resume: true`.
 */
export declare const copilotNormalizer: HarnessNormalizer;