import type { SystemPromptConfig } from "./session-types.js";
/**
 * Emit a `system_prompt` log entry. The console line is a compact summary
 * (length, preset, head/tail preview); the JSONL log entry keeps the original
 * full prompt in `message` so downstream training-data extraction remains
 * lossless.
 */
export declare function logSystemPrompt(systemPrompt: SystemPromptConfig): void;
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