/**
 * #2638 — dual-host instructions with one source.
 *
 * `init --dual` makes AGENTS.md the single source for the sections both hosts
 * share. CLAUDE.md becomes Claude Code's `@AGENTS.md` import plus only the
 * Claude-specific sections. Two steps:
 *
 *   1. writeDualClaudeMd (Claude pass) writes the import form, but only over a
 *      CLAUDE.md that is missing, already ours and unmodified, or --force.
 *   2. finalizeDualInstructions (after the Codex pass) checks that AGENTS.md
 *      really carries every shared section. If it does not (Codex init failed,
 *      or an older @claude-flow/codex wrote the single-host AGENTS.md), the full
 *      single-host CLAUDE.md is written back, so nothing is lost.
 */
import type { InitOptions, InitResult } from './types.js';
export declare const DUAL_MIGRATION_HINT: string;
/** Claude pass of `init --dual`: write CLAUDE.md as the AGENTS.md import form when it is safe to. */
export declare function writeDualClaudeMd(claudeMdPath: string, options: InitOptions, result: InitResult): void;
export interface DualFinalizeOutcome {
    /** `import`: CLAUDE.md imports AGENTS.md. `restored`: full CLAUDE.md written back. `none`: nothing to do. */
    action: 'import' | 'restored' | 'none';
    message?: string;
}
/**
 * After the Codex pass: keep the import form only when AGENTS.md carries every
 * shared section verbatim. Never touches a CLAUDE.md this run did not write.
 */
export declare function finalizeDualInstructions(targetDir: string, claudeResult: InitResult | undefined): DualFinalizeOutcome;
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