/**
 * Ephemeral, per-thread "detail grant" — an operator-side opt-in that lets the
 * agent's next long report_progress bubble bypass the hard length cap.
 *
 * This is the ONE trustworthy verbosity signal: it is set by an operator
 * `/detail` command that the SERVER sees (poller.ts), never by a flag the agent
 * sets on itself. A bare `detailed:true` is now ignored — the length check only
 * relaxes while a grant is live. Semantics: "next long message OR N minutes,
 * whichever comes first" — consumed when the first over-cap message passes, else
 * it expires.
 *
 * Deliberately in-memory only: a ~30-minute grant surviving a server restart has
 * no value, so it is never persisted to settings.json.
 */
/** Length of a granted window, in minutes. Configurable via DETAIL_GRANT_MINUTES. */
export declare const DETAIL_GRANT_MINUTES: number;
/**
 * Open a detail window for a thread: valid until the next long message or
 * DETAIL_GRANT_MINUTES from now, whichever comes first. Overwrites any existing
 * grant (a fresh `/detail` restarts the clock).
 */
export declare function grantDetailWindow(threadId: number, nowMs?: number): void;
/** Drop a thread's grant immediately (operator `/detail off`). Idempotent. */
export declare function revokeDetailGrant(threadId: number): void;
/**
 * Non-consuming peek: is there a live (unexpired) grant for this thread? Lazily
 * evicts an expired entry so the Map never accumulates stale grants.
 *
 * `nowMs` defaults to `Date.now()`; it is injectable purely so the window's
 * expiry is testable without stubbing the clock.
 */
export declare function isDetailGrantActive(threadId: number, nowMs?: number): boolean;
/**
 * Consume the grant: if active, delete it and return true (one long message is
 * allowed through). If inactive or expired, return false and leave nothing
 * behind. One-shot — a second long message needs a fresh `/detail`.
 */
export declare function consumeDetailGrant(threadId: number, nowMs?: number): boolean;
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