/**
 * System diagnostics collection for issue reports.
 *
 * Extracted from CLI issue command to core for shared use
 * by both CLI and dispatch layer.
 *
 * @task T4555
 * @epic T4820
 */
/**
 * Collect system diagnostics for bug reports.
 */
export declare function collectDiagnostics(): Record<string, string>;
/**
 * Format diagnostics as markdown table.
 */
export declare function formatDiagnosticsTable(diag: Record<string, string>): string;
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