/**
 * Shared low-level helpers for scanning tool_use / tool_result blocks out of
 * a message history. Lives in `context/` (a lower layer than `cli/`) so both
 * the compaction path (`context/compaction.ts`) and the CLI completion gate
 * (`cli/coding-completion-gate.ts`) can reuse them without a context→cli
 * layering inversion. @public
 */
import type { Message } from '../core/session/session-jsonl.js';
export interface ParsedTodoItem {
    content: string;
    status: 'pending' | 'in_progress' | 'completed';
}
/** Coerce a tool_result block to its flattened text content. */
export declare function toolResultText(block: unknown): string;
/** Map tool_use_id → tool name from assistant tool_use blocks in the session. */
export declare function toolUseNameById(messages: Message[]): Map<string, string>;
/**
 * Find the most recent todo_write checklist in the message history (scanning
 * from the end). Returns the structured items, [] when the list was explicitly
 * cleared, or null when no todo_write result is present. Used by the TUI sticky
 * task panel, the CLI completion gate, and — critically — by compaction to
 * preserve the active checklist across context compression (otherwise a long
 * coding task loses its todo thread when the todo_write result lands in the
 * pruned middle).
 */
export declare function extractLatestTodosFromMessages(messages: Message[]): ParsedTodoItem[] | null;
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