/**
 * Per-artifact-type renderer registry.
 *
 * Renderers are pure functions: (artifact) => markdown string.
 * Mechanisms (cli/disk/pr) call render(artifact) to get a human-readable
 * summary instead of stringifying the full artifact.
 *
 * Sprint 11 — replaces inline renderArtifact (cli), summarizeArtifact (disk),
 * renderCheckpointComment (pr) bodies. Colocated in renderers/ per mechanisms/
 * precedent established in Sprints 7-10.
 */
/**
 * Canonical artifact type strings.
 * CLI/disk/PR mechanisms MUST pass artifact.type matching one of these.
 * Unknown types fall back to a generic JSON text dump with a stderr warning (s11-c2).
 */
export type ArtifactType = "research" | "plan-spec" | "sprint-contract" | "curator-briefing" | "generator-diff" | "eval-result" | "code-review" | "sprint-summary" | "pipeline-summary";
/** A renderer function: artifact in, markdown string out. Pure, synchronous. */
export type Renderer = (artifact: unknown) => string;
/**
 * Register a renderer for a given artifact type.
 * Allows test fixtures or future sprints to extend the registry.
 */
export declare function registerRenderer(type: string, renderer: Renderer): void;
/**
 * Get the renderer for a given artifact type.
 * Returns undefined if the type is not registered.
 */
export declare function getRenderer(type: string): Renderer | undefined;
/**
 * Dispatch to the correct renderer by artifact.type.
 * Unknown types fall through to a generic JSON text dump + stderr warning (s11-c2).
 */
export declare function render(artifact: unknown): string;
/**
 * Generic fallback renderer — single source of truth for unknown-type rendering.
 *
 * Only picks safe metadata fields (type, path, summary, lines) — never stringifies
 * the entire artifact. Large fields (content, fullContent, text, data) are dropped
 * to preserve the 100ms perf budget (per disk.ts: large artifact safety test).
 */
export declare function renderGeneric(artifact: unknown): string;
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