import type { WidgetRuntimeMeta } from '../lib/contract/types';
import type { Prefs } from '../runtime/prefs';
import type { BridgeState } from '../runtime/bridge';
import type { SourceAdapter, SourceTick, TickReason } from './source-contract';
/** Point the consumer rules at the live registry (called once by lib/registry). */
export declare function useRuntimeMeta(next: Record<string, WidgetRuntimeMeta>): void;
export declare const SOURCE_REGISTRY: readonly SourceAdapter[];
/** The adapter for a `manifest.source` value, or undefined when none exists
 *  (a widget whose source was removed, or a manifest written before its
 *  adapter landed — `pnpm check:registry` fails the build for the latter). */
export declare function adapterFor(id: string): SourceAdapter | undefined;
/** Does any adapter answer this source? The skeleton decision needs this: a
 *  source nobody serves can never be "still loading". */
export declare function hasSource(id: string): boolean;
/** Every source id a manifest may declare. */
export declare function sourceIds(): string[];
/**
 * Does any INSTALLED unit declare that it reads a non-route source?
 *
 * `source` covers host ROUTES (the adapter contract polls a URL). Some data has no
 * route at all: the DSH scheduled-task subsystem is a client Remote FACE with a
 * change event (see data/schedule.ts). A unit that reads one of those declares it
 * in its manifest (`reads: ['schedule']`, surfaced through WIDGET_RUNTIME), and
 * this is the same gate the adapters get — nothing is subscribed, and no call is
 * made, unless a card that renders it is on the rail.
 */
export declare function readsSchedule(prefs: Prefs): boolean;
/** The installed instances this adapter serves (what the tick sees). */
export declare function instancesFor(adapter: SourceAdapter, prefs: Prefs): string[];
/**
 * The adapters that have at least one consumer right now.
 *
 * Nothing is requested unless some installed unit can render it: the OpenCode
 * route answers 503 while its key is unconfigured, so asking anyway printed
 * "Failed to load resource: 503" on every turn for a feature the user had never
 * placed on the rail (reported 2026-09-30), and a route nobody renders is pure
 * waste. Installing a widget starts its feed on the next render, because prefs
 * are read live at the point of use.
 */
export declare function activeAdapters(prefs: Prefs): SourceAdapter[];
/** Build the per-tick context an adapter reads. Pure: everything comes from the
 *  arguments, so two ticks with the same inputs behave identically. */
export declare function makeTick(adapter: SourceAdapter, reason: TickReason, prefs: Prefs, state: BridgeState, railOpen: boolean, now: number): SourceTick;