export type PresenceState = "mobile" | "office";
export type PresenceSource = "hook" | "cli";
export interface PresenceRecord {
    state: PresenceState;
    updated_at: string;
    source: PresenceSource;
}
export interface PresenceRead {
    state: PresenceState;
    updated_at: string | null;
    source: PresenceSource | null;
    is_default: boolean;
}
export declare function presenceFilePath(): string;
export declare function readPresence(): PresenceRead;
export declare function writePresence(state: PresenceState, source: PresenceSource): PresenceRecord;
export declare function clearPresence(): boolean;
/**
 * Strip fenced code blocks and `>`-quoted lines from the prompt before
 * scanning for quote characters. Pasted code or quoted prose with smart
 * quotes is the most common contamination vector; it shouldn't influence
 * presence inference. Inline code spans are intentionally left as-is.
 */
export declare function preprocessForDetection(prompt: string): string;
/**
 * Apply the detection rules to a prompt. Returns the inferred state, or null
 * if the prompt carries no actionable signal (mixed quotes, no quotes + not
 * short-trailing-space, etc.), in which case the caller should preserve
 * current state.
 *
 * Rule order (first match wins):
 *   1. Both curly AND straight present -> null (mixed)
 *   2. Curly only -> mobile
 *   3. Straight only -> office
 *   4. <100 chars and ends with space -> mobile
 *   5. Otherwise -> null
 */
export declare function detectFromPrompt(prompt: string): PresenceState | null;
export interface DetectResult {
    changed: boolean;
    before: PresenceState;
    after: PresenceState;
    detected: PresenceState | null;
}
export declare function applyDetection(prompt: string): DetectResult;
export declare function ageSeconds(updated_at: string | null): number | null;
export declare function formatAge(seconds: number | null): string;
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