/**
 * The projection planner. Pure — and the purity is the point.
 *
 * This module imports no `node:fs`, no `node:child_process`, and not `gh.ts`. A test
 * pins that over the import graph, which is what makes "planning needs no network" a
 * property of the code rather than a claim about the test suite: hand the command a
 * runner that throws on every invocation and planning still succeeds, because the
 * planner never had one.
 *
 * Refusals are **values**, in a fixed order, so a tree with two problems always yields
 * the same message and the command layer — not this module — decides the exit code.
 *
 * Requirements: roadmap-issue-projection/AC-14 … roadmap-issue-projection/AC-32,
 * roadmap-issue-projection/AC-44
 *
 * @module
 */
import { type BodyContext } from './body.js';
import type { SyncConfig } from './config.js';
import { type ProjectedMilestone, type RemoteMilestone } from './milestone-projection.js';
import { type Plan, type PlanLine, type ProjectableItem, type RemoteIssue, type UnprojectableRef } from './types.js';
/** GitHub's own issue-title limit. */
export declare const MAX_ISSUE_TITLE_LENGTH = 256;
export interface PlanInput {
    config: SyncConfig;
    items: readonly ProjectableItem[];
    unprojectable: readonly UnprojectableRef[];
    issues: readonly RemoteIssue[];
    retireIneligible: boolean;
    /** Printed in the plan header and the prompt. */
    repoLabel: string;
    /**
     * Everything body rendering needs. Required rather than defaulted: a silent default
     * would render every body with no permalinks and no reference links, and nothing
     * anywhere would say so.
     */
    bodyContext: BodyContext;
    /**
     * Milestones, while `milestones.yaml` is on. Absent is off: no milestone line, no refusal
     * and no issue milestone compared, so the plan is today's byte for byte
     * (github-milestones/AC-15). Arrives as data so this module still reads no file.
     */
    milestones?: MilestoneInput;
}
export interface MilestoneInput {
    /** File order. */
    wanted: readonly ProjectedMilestone[];
    /** Item id → the milestone id it sits under, null for Unassigned. */
    assigned: ReadonlyMap<string, string | null>;
    remote: readonly RemoteMilestone[];
}
export type PlanResult = {
    kind: 'ok';
    plan: Plan;
    warnings: readonly string[];
} | {
    kind: 'refused';
    error: string;
};
export declare function planProjection(input: PlanInput): PlanResult;
/** A line about a milestone itself, not about an issue's milestone. */
export declare function isMilestoneLine(l: PlanLine): boolean;
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