import type { AgentConfig } from './types.js';
/**
 * Test seam: re-arm the shadowing warning.
 */
export declare function resetShadowWarningForTesting(): void;
/**
 * Load configuration from file or user config, with environment variable overrides.
 * If setConfigInMemory() has been called (config-from-vault mode), returns the
 * in-memory config instead of loading from disk.
 *
 * Environment variables:
 * - ZNVAULT_URL: Override vault URL
 * - ZNVAULT_TENANT_ID: Override tenant ID
 * - ZNVAULT_API_KEY: Override API key (preferred over config file)
 * - ZNVAULT_USERNAME: Override username
 * - ZNVAULT_PASSWORD: Override password (preferred over config file)
 * - ZNVAULT_INSECURE: Set to "true" to skip TLS verification
 *
 * TLS environment variables (for HTTPS health server):
 * - ZNVAULT_TLS_ENABLED: Set to "true" to enable HTTPS health server
 * - ZNVAULT_TLS_CERT_PATH: Path to TLS certificate (PEM format)
 * - ZNVAULT_TLS_KEY_PATH: Path to TLS private key (PEM format)
 * - ZNVAULT_TLS_HTTPS_PORT: HTTPS port (default: 9443)
 * - ZNVAULT_TLS_KEEP_HTTP: Set to "false" to disable HTTP server when HTTPS enabled
 * - ZNVAULT_CA_CERT_PATH: Custom CA certificate for vault connection
 */
export declare function loadConfig(): AgentConfig;
/**
 * Get a specific config value
 */
export declare function getConfig<K extends keyof AgentConfig>(key: K): AgentConfig[K];
/**
 * Check if agent is configured
 * Considers both config file and environment variables.
 * Bootstrap tokens count as valid auth (will be exchanged for API key on startup).
 */
export declare function isConfigured(): boolean;
/**
 * Get config file path for display
 */
export declare function getConfigPath(): string;
/**
 * Set the in-memory config for config-from-vault mode.
 * When set, loadConfig() returns this instead of loading from disk.
 * This allows the agent to run with config fetched from vault without
 * persisting it to disk.
 */
export declare function setConfigInMemory(config: AgentConfig): void;
/**
 * Clear the in-memory config, reverting to disk-based config loading.
 */
export declare function clearConfigInMemory(): void;
/**
 * Check if in-memory config is currently active.
 */
export declare function isConfigInMemory(): boolean;
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