/**
 * Bundled guidance layer installation.
 *
 * The content package ships guidance layers (security defaults, accessibility,
 * API conventions) but nothing ever copied them into a project's
 * `.aidlc/guidance/`. `buildProjectContext` guards on the directory existing and
 * silently yields an empty layer map when it does not, so every
 * `{{guidance:<layer>}}` placeholder had nothing to resolve against — the failure
 * was silent by construction.
 *
 * Installation is deliberately non-destructive: a layer whose on-disk body has
 * been edited is left alone, and the project's `index.yaml` is merged rather than
 * replaced so registrations the project owns (notably the retrospective-fed
 * `lessons` layer) survive.
 *
 * The mechanics now live in `./layer-install.ts`, which takes an explicit entry
 * list. This module is the framework's caller of it: it passes the content
 * package's whole guidance index and the bundled-body comparison. Compliance
 * packs deliberately do **not** come through here — a pack layer registered in
 * the content guidance index would be installed by every caller of this function,
 * and one of those callers is a `safe`-tier doctor migration that auto-applies
 * without prompting (compliance-packs/AC-53, AC-54).
 *
 * Requirements: guidance-layers-never-resolve/AC-1, AC-3, AC-4
 */
import { type LayerInstallReport } from './layer-install.js';
/**
 * Outcome of an installation pass.
 *
 * Structurally identical to `LayerInstallReport`; kept as a named alias because
 * `init`, `update` and the doctor migration all import this name.
 */
export type GuidanceInstallReport = LayerInstallReport;
/**
 * Install every guidance layer registered in the content package into a project.
 *
 * @param projectRoot - Absolute project root.
 * @param contentRoot - Absolute root of the `@rasensio/aidlc-content` package.
 * @param opts.dryRun - Compute the report without writing anything.
 */
export declare function installBundledGuidance(projectRoot: string, contentRoot: string, opts?: {
    dryRun?: boolean;
}): GuidanceInstallReport;
/**
 * Render a one-line summary of an installation pass, or null when nothing happened.
 */
export declare function summarizeGuidanceInstall(report: GuidanceInstallReport): string | null;
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