/**
 * 倒计时 / Countdown — ONE timer reading, TWO subjects, and a picker of its own.
 *
 * ── The three views ─────────────────────────────────────────────────────────
 * `pick` (the default subject) is a pomodoro, and it has TWO views:
 *   - the PICKER: a 2×2 grid of duration capsules (1 / 3 / 5 / 10 minutes — the
 *     owner's reference, 2026-10-14). A press dispatches `timer:pick:<minutes>`,
 *     which writes the length AND starts the run in one op; the settings field
 *     自定义分钟数 replaces the longest slot when it is set;
 *   - the RUN view: the stopwatch's dial (`layout: 'dial-head'`) — the remaining
 *     time over the same two round controls — with a back chevron in the TITLE ROW
 *     (`headAction`), which is the owner's ask.
 * Which of the two is drawn is DERIVED, not stored: `startedAt === null &&
 * tmBase === 0` is "nothing has been started", and every op that stops a run
 * (`timer:reset`) leaves exactly that state. A fifth persisted field would have to
 * be kept in sync with those two, and could disagree with them.
 *
 * `next` is read-only: it counts down to the instant the DSH scheduled-task
 * subsystem will next fire, and has no controls at all — nothing about a cron rule
 * is the user's to press here. It is selected in the component config.
 *
 * ── Why `next` reuses the very same `timer` payload ─────────────────────────
 * A countdown to an ABSOLUTE instant is expressed in the reading's own two
 * numbers instead of a third `targetAt` field: `startedAt = <this render's
 * anchor>` and `durationMs = target − anchor`. The renderer computes
 * `durationMs − (now − startedAt)`, which for ANY later `now` is exactly
 * `target − now` — so the figure stays honest however stale this render output
 * is (the rail's idle tick is 30 s, the renderer's own tick is 1 s).
 *
 * The anchor therefore MUST be the same instant the two numbers were derived
 * from: `pinnedInstant(sim.at)` under a preview, `Date.now()` live. Mixing an
 * older anchor with a freshly computed duration would drift by however long
 * the render output sat in the rail.
 *
 * ── The target line's zone ──────────────────────────────────────────────────
 * `目标 HH:MM` is the browser's OWN local zone (`readClock(target, 'local')`).
 * The card deliberately ships no timezone field: the instant it counts to is
 * this user's own pomodoro end, not a zone's wall clock, and a rule's own
 * `timeZone` describes the SCHEDULED task (next mode formats no time at all).
 *
 * ── Why the title stays ─────────────────────────────────────────────────────
 * CARD-TITLE-STANDARD **T2 度量型**: a bare `18:00` names nothing — the title is
 * the only place that says WHICH clock this is (a pomodoro, not a task's elapsed
 * time). On the run view the title row is also the back affordance's home, which is
 * what the owner asked for; on the picker it is the card's only label.
 *
 * ── The two degradation rules (`schedule`) ──────────────────────────────────
 * `stats.schedule` is `null` when no card on this rail waits on the schedule
 * source (the manifest declares `reads: ['schedule']`, so the collector subscribes
 * whenever THIS card is installed), and `{ status: 'unavailable' }` when the
 * deployment carries no schedule surface at all. NEITHER means "you have no tasks"
 * — the card says 定时任务不可用 for both, and only a READY snapshot with no future
 * active entry earns 暂无日程. The preview may PIN that verdict with
 * `sim.scheduleStatus`, which is what keeps BOTH branches reachable offline.
 */
import type { WidgetRenderMeta, WidgetRenderOut, WidgetStats } from '../../client/lib/contract/types';
declare function renderCountdown(stats: WidgetStats, meta?: WidgetRenderMeta): WidgetRenderOut;
declare const _default: {
    id: string;
    name: () => string;
    desc: () => string;
    builtin: true;
    group: string;
    sizes: "2x2"[];
    simToggle: () => string;
    render: typeof renderCountdown;
    configSchema: ({
        key: string;
        label: () => string;
        type: "mode";
        default: string;
        options: [string, () => string][];
        hint?: undefined;
    } | {
        key: string;
        label: () => string;
        type: "text";
        default: string;
        hint: () => string;
        options?: undefined;
    })[];
    example: {
        stats: {
            cdMode: string;
            cdCustom: string;
            cdMin: string;
            tmBase: number;
            tmStart: null;
            schedule: {
                status: "ready";
                entries: never[];
            };
        };
        sim: {
            at: number;
            mode: string;
        };
        simSteps: ({
            at: number;
            mode: string;
            cdCustom?: undefined;
            cdMin?: undefined;
            baseMs?: undefined;
            startedAt?: undefined;
            started?: undefined;
            done?: undefined;
            nextAt?: undefined;
            nextTitle?: undefined;
            nextKind?: undefined;
        } | {
            at: number;
            mode: string;
            cdCustom: string;
            cdMin?: undefined;
            baseMs?: undefined;
            startedAt?: undefined;
            started?: undefined;
            done?: undefined;
            nextAt?: undefined;
            nextTitle?: undefined;
            nextKind?: undefined;
        } | {
            at: number;
            mode: string;
            cdMin: number;
            baseMs: number;
            startedAt: null;
            started: boolean;
            cdCustom?: undefined;
            done?: undefined;
            nextAt?: undefined;
            nextTitle?: undefined;
            nextKind?: undefined;
        } | {
            at: number;
            mode: string;
            cdMin: number;
            baseMs: number;
            startedAt: number;
            started: boolean;
            cdCustom?: undefined;
            done?: undefined;
            nextAt?: undefined;
            nextTitle?: undefined;
            nextKind?: undefined;
        } | {
            at: number;
            mode: string;
            cdMin: number;
            baseMs: number;
            startedAt: null;
            started: boolean;
            done: boolean;
            cdCustom?: undefined;
            nextAt?: undefined;
            nextTitle?: undefined;
            nextKind?: undefined;
        } | {
            at: number;
            mode: string;
            nextAt: number;
            nextTitle: string;
            nextKind: string;
            cdCustom?: undefined;
            cdMin?: undefined;
            baseMs?: undefined;
            startedAt?: undefined;
            started?: undefined;
            done?: undefined;
        })[];
        note: string;
    };
};
export default _default;