/**
 * Static Provider Registry (DESIGN.md §5, P2-05).
 *
 * The production registry is a static list of built-in Provider
 * Descriptors in canonical fallback order. It performs
 * NO dynamic imports, accepts no package names, file paths, or
 * externally supplied factories. Tests inject descriptor lists through
 * the explicit optional parameters of {@link getProviderDescriptor} and
 * {@link getConfiguredProviderDescriptors}; production uses the static
 * built-in list by default.
 *
 * Boundary rules (ARCHITECTURE.md §2):
 *   - Imports the real Adapter Modules (`providers/zai/adapter.js`,
 *     `providers/minimax/adapter.js`), NOT the P2-01 stubs in `types.ts`.
 *   - Must NOT import command Modules, shared execution, or transport.
 */
import type { ProviderDescriptor, ProviderId } from "./types.js";
/**
 * Built-in Provider Descriptors in canonical order. Each Descriptor is
 * constructed once at module load with its production (no-argument)
 * factory; the Adapters bind their real transports lazily, only inside
 * Capability invocation.
 *
 * IO-FREE IMPORT INVARIANT (#159): module import constructs every
 * descriptor below, so a descriptor factory must perform NO filesystem
 * I/O and must not resolve environment-derived paths into strings at
 * construction time — a value like `asyncJobStateDir(...)` captured
 * here freezes against the import-time env and never sees a
 * `SCOUTLINE_CACHE_DIR` set later. Environment-derived defaults must
 * stay deferred pure computations, resolved inside `create()` (or
 * later). The spawn-based import canary in
 * `tests/async-job-state-lazy.test.js` pins the no-writes half of this
 * invariant; the lazy-resolution pins in the same file pin the
 * deferred-resolution half.
 */
export declare const BUILT_IN_PROVIDER_DESCRIPTORS: readonly ProviderDescriptor[];
/**
 * Look up a built-in Descriptor by ID. The optional `descriptors`
 * parameter lets tests inject doubles; production defaults to the
 * static built-in list.
 */
export declare function getProviderDescriptor(id: ProviderId, descriptors?: readonly ProviderDescriptor[]): ProviderDescriptor;
/**
 * Return the built-in Descriptors that are configured for the given
 * environment. Pure metadata; no Adapter is constructed.
 */
export declare function getConfiguredProviderDescriptors(env: NodeJS.ProcessEnv, descriptors?: readonly ProviderDescriptor[]): readonly ProviderDescriptor[];
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