import type { WorkflowInstance, WorkflowDefinition, WorkflowStepDefinition } from "./types";
/**
 * Resolve template variables in a string.
 * Supports: {{instance.goal}}, {{instance.slug}}, {{artifacts.X}}, {{step.name}}, {{step.id}}
 * Unknown variables are left as-is.
 */
export declare function resolveTemplate(template: string, instance: WorkflowInstance, definition: WorkflowDefinition): string;
/**
 * Build the workflow context header showing goal, step history, and accumulated artifacts.
 */
export declare function buildContextHeader(instance: WorkflowInstance, definition: WorkflowDefinition): string;
/**
 * Build the full context-threaded prompt for a step.
 * Combines: (1) workflow context header, (2) delegation instruction if step
 * targets a non-loom agent, (3) resolved step prompt.
 */
export declare function composeStepPrompt(stepDef: WorkflowStepDefinition, instance: WorkflowInstance, definition: WorkflowDefinition): string;