/**
 * Deterministic canvas enrichment (no LLM, no user token, no file reads, no
 * cache). Given the already-extracted CanvasGraph (core/canvas-graph.ts), it
 * computes the same CanvasEnrichment shape the old AI task returned
 * (core/canvas-enrichment.ts) — a summary line, footer notes, and a
 * cross-workflow tie — entirely from the graph's own structure. Pure and
 * total: the same graph in always yields the same enrichment out, and every
 * string is kept within ENRICHMENT_LIMITS so the layout can't break.
 *
 * What it deliberately does NOT reproduce from the retired AI pass: free-prose
 * per-step descriptions and condition-named edge labels, which needed a reading
 * of the step bodies. The base render already conveys role (node border +
 * classify-derived sublabel) and outcome (edge color), so their absence
 * degrades to "less prose", never "less structure".
 */
import { type CanvasEnrichment } from "./canvas-enrichment.js";
import type { CanvasGraph } from "./canvas-graph.js";
/**
 * A one-line description of the workflow's shape — step count, branch points,
 * and terminal outcomes — the deterministic stand-in for the AI summary. Reads
 * the same graph the diagram is drawn from, so it can never disagree with it.
 */
export declare function deriveSummary(graph: CanvasGraph): string;
/**
 * Footer notes: the graph's own validation warnings (unreachable steps, no path
 * to a terminal) — facts worth surfacing that the diagram can't show on its own.
 * Undefined when the graph is clean, capped to the contract's count/length.
 */
export declare function deriveNotes(graph: CanvasGraph): string[] | undefined;
/**
 * The cross-workflow tie, derived from the dashed launched-workflow nodes the
 * extraction already merged in (core/canvas-graph.ts's mergeLaunchesIntoGraph,
 * fed by the grep in core/canvas-interconnections.ts). Undefined when this
 * workflow launches none.
 */
export declare function deriveCrossWorkflow(graph: CanvasGraph): string | undefined;
/**
 * Builds the deterministic enrichment for a graph. Only sets a field when it
 * has real content, so an annotation-light but valid workflow renders its clean
 * base — matching the "every field optional" contract the AI enrichment had.
 */
export declare function deriveEnrichment(graph: CanvasGraph): CanvasEnrichment;
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