/**
 * Strict PAT-only Jira Configuration
 *
 * Centralized, hardened configuration for Personal Access Token authentication.
 * This is the single source of truth for PAT-based Jira access.
 *
 * Use this for board/tickets APIs that need reliable PAT access.
 */
export type JiraAuthMode = "PAT" | "OAUTH";
export interface JiraPatConfig {
    baseUrl: string;
    email: string;
    apiKey: string;
    projectKey?: string;
    authMode: JiraAuthMode;
}
/**
 * Get Jira configuration using PAT (Personal Access Token) mode only
 *
 * This is a strict, hardened version that:
 * - Only reads from environment variables (no file config)
 * - Validates all values are plain strings (not objects)
 * - Throws clear errors if anything is missing
 * - Always returns authMode: "PAT"
 *
 * @returns JiraPatConfig with validated PAT credentials
 * @throws Error if required environment variables are missing or invalid
 */
export declare function getJiraPatConfig(): JiraPatConfig;
/**
 * Build Basic Auth header for PAT credentials
 *
 * @param config - Jira PAT configuration
 * @returns Authorization header value
 */
export declare function buildPatAuthHeader(config: JiraPatConfig): string;
/**
 * Get REST API base URL for PAT mode
 *
 * @param config - Jira PAT configuration
 * @returns Base URL for REST API calls (without /rest/api/3)
 */
export declare function getPatRestBaseUrl(config: JiraPatConfig): string;
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