/**
 * Per-block content sanitizer for orchestration wrapper leakage.
 *
 * Agent harnesses (OpenCode, Droid, ForgeCode, oh-my-opencode, etc.) inject
 * internal markup into message content — `<system-reminder>`, `<env>`,
 * `<task_metadata>`, and similar tags. When the proxy flattens messages into
 * a text prompt for the Agent SDK, these tags become model-visible text that
 * can confuse the model or cause it to echo them back ("talking to itself").
 *
 * This module strips known orchestration tags from **individual text blocks**
 * before flattening — not from the final concatenated string. Operating
 * per-block eliminates the cross-message regex risk that makes full-string
 * sanitization fragile.
 *
 * Pure module — no I/O, no imports from server.ts or session/.
 *
 * Fixes: https://github.com/rynfar/meridian/issues/167
 */
export interface SanitizeOptions {
    /** Strip `<system-reminder>` blocks. Enable for adapters (Droid) that leak
     *  CWD/env through this tag. */
    stripSystemReminder?: boolean;
}
/**
 * Strip orchestration wrappers from a single text string.
 *
 * Designed to be called on individual content blocks (not concatenated
 * prompt strings) to eliminate cross-block regex matching risk.
 */
export declare function sanitizeTextContent(text: string, opts?: SanitizeOptions): string;
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