/**
 * G6 — skill-level heartbeat scheduler config.
 *
 * matter for a Dispatcher (peaks-code / peaks-rd / peaks-qa) can opt
 * into a non-default heartbeat interval by including a line like:
 *
 *   heartbeatIntervalSec: 15
 *
 * The default is 30 s (RL-13 empirical sweet spot). The poller
 * cadence is fixed at 10 s (sub-agent 30 s / poller 10 s is the
 * jitter-resistant offset).
 *
 * This module is a pure-key parser — it takes a SKILL.md body and
 * returns the effective config. The Dispatcher's prompt template
 * for sub-agents is then responsible for inlining the chosen value
 * into the sub-agent prompt so that the LLM knows how often to
 * call `peaks sub-agent heartbeat`.
 *
 * Note: the heartbeat *cadence* the LLM uses is enforced socially
 * (via the prompt), not via any hook. R-1 / R-8 boundary — LLM
 * behaviour is not observable. The user has been explicit about
 * this: "心跳是 sub-agent 主动写, peaks CLI 不观测 LLM 行为".
 */
export declare const DEFAULT_HEARTBEAT_INTERVAL_SEC = 30;
export declare const MIN_HEARTBEAT_INTERVAL_SEC = 5;
export declare const MAX_HEARTBEAT_INTERVAL_SEC = 600;
export type SkillHeartbeatConfig = {
    readonly intervalSec: number;
    /** Source of the chosen value (useful for debugging). */
    readonly source: 'default' | 'skill-frontmatter';
};
/** Parse a SKILL.md body for a `heartbeatIntervalSec: <N>` line. */
export declare function parseHeartbeatConfig(skillBody: string): SkillHeartbeatConfig;
/**
 * Build the heartbeat-instruction paragraph to inline in a sub-agent
 * prompt. The LLM reads this and adjusts its `peaks sub-agent
 * heartbeat` cadence accordingly.
 */
export declare function heartbeatInstructionParagraph(config: SkillHeartbeatConfig): string;