import type { ProjectContext, ExistingArtifact } from '../../types/index.js';
import type { PipelineState, ScaffoldConfig } from '../../types/index.js';
/**
 * Gather project context for assembly.
 * Collects artifacts from dependency chain + reads, config, state, decisions.
 */
export declare function gatherContext(options: {
    step: string;
    state: PipelineState;
    config: ScaffoldConfig;
    projectRoot: string;
    /** Step slugs to gather artifacts from (dependency chain + reads) */
    dependencyChain: string[];
    /** For update mode: include existing artifact */
    existingArtifact?: ExistingArtifact;
}): ProjectContext;
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