/**
 * Projection: per-file provenance → typed `authored_by` / `changed_in_pr` graph
 * edges (spec-18). The decisions/IaC analogue: git history is the authored source;
 * this projection is derived and regenerable. Edges hang off existing file nodes —
 * no person/PR nodes are added to the call graph, keeping it un-bloated (the cap is
 * applied upstream in the extractor).
 *
 * Edge direction is code → context: a file is `authored_by` a person and
 * `changed_in_pr` a pull request.
 */
import type { FileProvenance } from './git-provenance.js';
/** file → person. `role: 'last'` marks the last-touch author. */
export interface AuthoredByEdge {
    kind: 'authored_by';
    filePath: string;
    name: string;
    email: string;
    /** Author date of the last-touch commit (only meaningful for role 'last'). */
    lastDate?: string;
    role: 'last' | 'recent';
}
/** file → pull request. `title`/`state` present only when `gh` enrichment succeeded. */
export interface ChangedInPrEdge {
    kind: 'changed_in_pr';
    filePath: string;
    pr: number;
    title?: string;
    state?: string;
}
export interface ProjectedProvenance {
    authoredBy: AuthoredByEdge[];
    changedInPr: ChangedInPrEdge[];
}
/** "Name <email>" display key for a person (stable identity). */
export declare function personKey(name: string, email: string): string;
export declare function projectProvenance(records: FileProvenance[]): ProjectedProvenance;
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