/**
 * Install the decision register's template (decision-register/AC-5, AC-6).
 *
 * The template ships in the content package's `templates/` directory, which a
 * design session in someone else's project cannot read. Installing it under
 * `.aidlc/resources/templates/` is what lets the first project-wide decision
 * create `docs/adr/decision-register.md` from it.
 *
 * Only the template is installed. The register itself is the project's and is
 * written by the design phase, never by a command: a project that makes no
 * project-wide decision never gets one (AC-6).
 *
 * Rendered through `renderRule`, so it carries the same ownership marker after
 * its heading as the rules do. Not a platform adapter, for the reason
 * `rules.ts` gives: every platform reads it by path.
 *
 * @module
 */
/** Repo-relative target, for reports and tests. */
export declare const REGISTER_TEMPLATE_PATH: string;
/** Outcome of one install pass. */
export interface RegisterTemplateReport {
    /** Repo-relative path when the file was written, else null. */
    path: string | null;
    warnings: string[];
}
/**
 * Write the register template into a project.
 *
 * @param projectRoot - Absolute project root.
 * @param opts.dryRun - Compute the report without touching disk.
 * @param opts.body - The template text. A test seam; defaults to the content
 *   package's.
 */
export declare function installRegisterTemplate(projectRoot: string, opts?: {
    dryRun?: boolean;
    body?: string;
}): RegisterTemplateReport;
/** One-line summary of an install pass, or null when nothing changed. */
export declare function summarizeRegisterTemplate(report: RegisterTemplateReport): string | null;
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