/**
 * Terminal theme detection for Mastra Code TUI.
 *
 * Detection priority:
 * 1. MASTRA_THEME env var (explicit override)
 * 2. OSC 11 query — asks the terminal for its actual background color
 * 3. COLORFGBG env var (set by some terminal emulators)
 * 4. Default: 'dark'
 */
import type { ThemeMode } from './theme.js';
/**
 * Detect the terminal's color scheme.
 * Returns 'dark' or 'light'. Does not check persisted settings —
 * the caller should check settings first and only call this for 'auto' mode.
 */
export interface ThemeDetectionResult {
    mode: ThemeMode;
    /** The actual terminal background hex color, if detected via OSC 11. */
    detectedBgHex?: string;
}
export declare function detectTerminalTheme(): Promise<ThemeDetectionResult>;
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