/**
 * `@sylphx/management` — pure-functional TypeScript SDK for the Sylphx
 * Management API.
 *
 * Shape (ADR-077 Rule B — no classes, no `this`, no inheritance):
 *
 *   import { createClient, projects, databases } from '@sylphx/management'
 *
 *   const client = createClient({ token: process.env.SYLPHX_TOKEN! })
 *   const list   = await projects.list(client)
 *   const db     = await databases.create(client, { name: 'mydb', tier: 'standard', env: 'production', storageGb: 10 })
 *
 * The `Client` returned by `createClient` is a frozen value-type carrying
 * only the transport primitives (token, URLs, User-Agent, optional fetch).
 * All business logic lives server-side (Effect-TS, ADR-058). Capability modules
 * (`projects`, `databases`, …) are flat namespaces of free async
 * functions that take `Client` as their first argument. No state is
 * held in the SDK; the same `Client` may be shared across any number
 * of parallel calls.
 *
 * Errors surface as `ApiError` with the upstream status + a best-effort
 * parsed body. Consumers treat them via `try/catch` or `.catch`; the
 * Effect-TS CLI wraps via `Effect.tryPromise` at its ApiService Layer.
 */
export interface ClientOptions {
    readonly token: string;
    /** Base URL for the API. Default: `https://api.sylphx.com`. */
    readonly baseUrl?: string;
    /** User-Agent header value. Default: current beta package identity. */
    readonly userAgent?: string;
    /** Optional transport override for server-side cookie forwarding or tests. */
    readonly fetch?: typeof globalThis.fetch;
    /**
     * Optional organization selector for user-context Management API calls.
     * Multi-org operators use this to scope requests without minting a separate
     * OAuth token per org.
     */
    readonly preferredOrgId?: string;
}
export interface Client {
    readonly token: string;
    readonly baseUrl: string;
    readonly apiBase: string;
    readonly userAgent: string;
    readonly fetch?: typeof globalThis.fetch;
    readonly preferredOrgId?: string;
}
export declare function createClient(opts: ClientOptions): Client;
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