/**
 * AI Rules prompt formatting.
 *
 * Enterprise users can define custom rules/preferences that the agent
 * must follow. This module formats those rules into a prompt section
 * that gets appended to the system prompt.
 *
 * Mirrors the LG Python equivalent in backend/agent/prompts/system_prompt.py.
 */
/**
 * Format AI rules into a prompt section.
 *
 * Returns an empty string when rules are absent/empty, otherwise returns
 * the formatted block ready to be appended to the system prompt.
 */
export declare function formatAiRulesPrompt(aiRules: string | null | undefined): string;
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