/**
 * claude-code cost provider: transcript JSONL parsing since a cursor.
 *
 * Transcripts live at ~/.claude/projects/<project-slug>/<session-id>.jsonl
 * (CLAUDE_CONFIG_DIR respected). The entry format is internal to Claude Code
 * and may change between versions — extraction is fail-soft: anything that
 * doesn't match the expected shape is skipped and counted, never fatal (D1).
 *
 * Cursor: last processed entry uuid. Resume/compaction append to the same
 * file, so uuid-based resumption is safe; if the cursor uuid is absent
 * (e.g. /branch copied the file), extraction falls back to the beginning
 * and the recorder's coverage dedup prevents double counting.
 *
 * **One API response spans several lines.** Claude Code writes one line per
 * content block and repeats the response's `usage` object on every one, so
 * counting per line counts one charge many times over. Segments are therefore
 * grouped by `message.id`, and the repeats are *collapsed* rather than summed —
 * see `extract` for the measurement that settles which of the two is correct.
 *
 * The other two providers were checked, not assumed: `codex.ts` emits one segment
 * per `token_count` event and its own docblock records that no record carries an
 * id at all, while `kiro.ts` emits one per `usage_summary` turn summary. Neither
 * writes per content block, so neither carries this defect and neither needs the
 * grouping.
 *
 * Design: design.md §3; context-budget design Part 1
 */
import { isWithin } from '../../core/paths.js';
import type { CostProvider, ProviderEnv } from './provider.js';
/** Root directory that transcripts must live under (FR3.9). */
export declare function transcriptRoot(env: ProviderEnv): string;
/**
 * Is `p` the directory `root` or something beneath it? Purely lexical.
 *
 * Re-exported from `core/paths.ts`, which is now the only implementation
 * (project-constitution D4). Kept exported here so `kiro.ts` and the cost tests
 * that import it from this module keep working.
 */
export { isWithin };
export declare const claudeCodeProvider: CostProvider;
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