export interface CodexComposerInputState {
    viewport: string;
    cursor: {
        x: number;
        y: number;
    };
}
export type CodexComposerState = 'empty' | 'draft' | 'unknown';
/**
 * Infer whether the cursor is inside a non-empty Codex composer.
 *
 * Codex leaves the cursor immediately after the `› ` marker while its empty
 * placeholder is visible. A real single-line draft moves the cursor to the
 * right; a multi-line draft moves it below the marker row. This lets botmux
 * distinguish the placeholder from user-authored text without depending on
 * the placeholder copy, color, or locale.
 *
 * KNOWN LIMITATION (fail-open, accepted): the signal is cursor position alone.
 * A single-line draft whose cursor the user moved back to the very start
 * (`cursor.x` at the empty-composer column) is indistinguishable from an empty
 * composer and reports 'empty' — the Lark message would still be appended. A
 * truly fail-closed detector would need composer content evidence (ANSI style
 * runs / a stronger Codex state probe), not just the cursor. This guard only
 * covers the common case where the cursor is still at/after the draft it typed.
 */
export declare function detectCodexComposerState(input: CodexComposerInputState | null | undefined): CodexComposerState;
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