export interface ProjectIndexCounts {
    /** Agents in the registry; absent when the build failed. */
    agents?: {
        total: number;
        user: number;
    };
    /** Skill index entries plus Org-library skills; absent when not built. */
    skills?: {
        total: number;
        user: number;
    };
}
/** Builds both indexes for `targetDir`. The skill index is built only where
 *  `.claude/helpers` exists (it lives there). Never throws. */
export declare function buildProjectIndexes(targetDir: string, sourceHelpersDir?: string | null): ProjectIndexCounts;
/** `Indexed 90 agents (2 from ~/.claude/agents) and 560 skills (3 from ~/.claude/skills)`;
 *  null when neither index was built. */
export declare function formatIndexSummary(counts: ProjectIndexCounts | undefined): string | null;
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