/**
 * @license
 * Copyright 2025 Vybestack LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001
 * @pseudocode runtime-state.md lines 18-48
 *
 * AgentRuntimeState abstraction to replace stateful Config usage.
 * This is a STUB implementation for Phase 03 (TDD preparation).
 * Actual implementation happens in Phase 05.
 */
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.1
 * @pseudocode runtime-state.md lines 18-48
 *
 * Core runtime state interface representing provider/model/auth configuration.
 */
export interface AgentRuntimeState {
    readonly runtimeId: string;
    readonly provider: string;
    readonly model: string;
    readonly baseUrl?: string;
    readonly proxyUrl?: string;
    readonly modelParams?: ModelParams;
    readonly sessionId: string;
    readonly updatedAt: number;
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.1
 *
 * Model parameters for generation configuration.
 */
export interface ModelParams {
    temperature?: number;
    topP?: number;
    maxTokens?: number;
    [key: string]: unknown;
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.1
 * @pseudocode runtime-state.md lines 73-105
 *
 * Parameters for creating a new runtime state instance.
 */
export interface RuntimeStateParams {
    runtimeId: string;
    provider: string;
    model: string;
    baseUrl?: string;
    proxyUrl?: string;
    modelParams?: ModelParams;
    sessionId?: string;
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.3
 * @pseudocode runtime-state.md lines 329-355
 *
 * Serializable snapshot of runtime state for diagnostics.
 */
export interface RuntimeStateSnapshot {
    runtimeId: string;
    provider: string;
    model: string;
    baseUrl?: string;
    proxyUrl?: string;
    modelParams?: ModelParams;
    sessionId: string;
    updatedAt: number;
    version: number;
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.2
 * @pseudocode runtime-state.md lines 209-243
 *
 * Event payload emitted when runtime state changes.
 */
export interface RuntimeStateChangedEvent {
    runtimeId: string;
    changes: Record<string, {
        old: unknown;
        new: unknown;
    }>;
    snapshot: RuntimeStateSnapshot;
    timestamp: number;
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-003.2
 * @pseudocode runtime-state.md lines 289-318
 *
 * Callback for runtime state change events.
 */
export type RuntimeStateChangeCallback = (event: RuntimeStateChangedEvent) => void;
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-003.2
 *
 * Function to unsubscribe from runtime state changes.
 */
export type UnsubscribeFunction = () => void;
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.1
 * @pseudocode runtime-state.md lines 366-381
 *
 * Error codes for runtime state validation failures.
 */
export declare enum RuntimeStateErrorCode {
    RUNTIME_ID_MISSING = "runtimeId.missing",
    PROVIDER_MISSING = "provider.missing",
    PROVIDER_INVALID = "provider.invalid",
    MODEL_MISSING = "model.missing",
    MODEL_INVALID = "model.invalid",
    BASE_URL_INVALID = "baseUrl.invalid",
    UPDATE_UNSUPPORTED = "update.unsupported",
    NOT_IMPLEMENTED = "not.implemented"
}
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-001.1
 * @pseudocode runtime-state.md lines 366-381
 *
 * Error thrown during runtime state validation or update.
 */
export declare class RuntimeStateError extends Error {
    readonly code: RuntimeStateErrorCode;
    readonly details?: Record<string, unknown> | undefined;
    constructor(code: RuntimeStateErrorCode, details?: Record<string, unknown> | undefined);
}
/**
 * @plan PLAN-20251027-STATELESS5.P05
 * @requirement REQ-STAT5-001.1
 * @pseudocode runtime-state.md lines 73-105
 *
 * Creates a new immutable runtime state instance.
 * Validates all required fields and auth consistency.
 */
export declare function createAgentRuntimeState(params: RuntimeStateParams): AgentRuntimeState;
/**
 * @plan PLAN-20251027-STATELESS5.P05
 * @requirement REQ-STAT5-001.2
 * @pseudocode runtime-state.md lines 209-243
 *
 * Updates runtime state immutably, returning a new instance.
 * Validates updates and emits synchronous change events.
 */
export declare function updateAgentRuntimeState(oldState: AgentRuntimeState, updates: Partial<RuntimeStateParams>): AgentRuntimeState;
/**
 * @plan PLAN-20251027-STATELESS5.P05
 * @requirement REQ-STAT5-002.3
 * @pseudocode runtime-state.md lines 252-278
 *
 * Batch update for atomic multi-field changes (e.g., provider switch).
 * All updates validated together, single event emitted.
 */
export declare function updateAgentRuntimeStateBatch(oldState: AgentRuntimeState, updates: Partial<RuntimeStateParams>): AgentRuntimeState;
/**
 * @plan PLAN-20251027-STATELESS5.P05
 * @requirement REQ-STAT5-001.3
 * @pseudocode runtime-state.md lines 329-355
 *
 * Returns a frozen snapshot of runtime state for diagnostics.
 * Sanitizes sensitive auth data.
 */
export declare function getAgentRuntimeStateSnapshot(state: AgentRuntimeState): RuntimeStateSnapshot;
/**
 * @plan PLAN-20251027-STATELESS5.P05
 * @requirement REQ-STAT5-003.2
 * @pseudocode runtime-state.md lines 289-318
 *
 * Subscribes to runtime state change events.
 * Returns unsubscribe function to remove callback.
 */
export declare function subscribeToAgentRuntimeState(runtimeId: string, callback: RuntimeStateChangeCallback, options?: {
    async: boolean;
}): UnsubscribeFunction;
/**
 * @plan PLAN-20251027-STATELESS5.P03
 * @requirement REQ-STAT5-003.1
 * @pseudocode runtime-state.md lines 150-173
 *
 * Synchronous accessors for runtime state fields.
 * STUB: Minimal implementations for type safety.
 */
export declare function getProvider(state: AgentRuntimeState): string;
export declare function getModel(state: AgentRuntimeState): string;
export declare function getBaseUrl(state: AgentRuntimeState): string | undefined;
export declare function getSessionId(state: AgentRuntimeState): string;
export declare function getModelParams(state: AgentRuntimeState): Readonly<ModelParams> | undefined;