/**
 * CrossPassEdgeMerger — Phase 2 of slice-topology-multipass (W2 T7).
 *
 * Produces `CrossPassEdge`s that span two adjacent decomposition passes by
 * combining fast structural detectors with the `LLMArbitrator` fallback.
 *
 * Pipeline (per adjacent pass pair `(upper, lower)`):
 *   1. Build a `path → upperSliceId` index of every file owned by `upper`.
 *   2. For each lower slice, for each file in that slice:
 *        a. type-shares      — `import type { ... } from '...'` resolves to an upper file.
 *        b. import-re-export — `export ... from '...'` resolves to an upper file.
 *        c. fixture-shares    — file is a test file AND `from '...'` resolves to an upper file.
 *      Each match emits one `CrossPassEdge` with `confidence: 'structural'` and
 *      `arbitratedBy: null`.
 *   3. If a lower slice emitted NO static edges AND `opts.llmRunner` is provided AND
 *      `llmCalls.length < opts.maxLlmCalls`, invoke `arbitrate(...)` once. On a
 *      successful `{"depends": true}` response, emit one edge with
 *      `kind: 'llm-arbitrated'`, `confidence: 'llm'`, and `arbitratedBy: <callId>`.
 *   4. The budget is `opts.maxLlmCalls ?? 2`; once exhausted the merger returns
 *      what it has accumulated and never crashes.
 *
 * Pass 3 is reserved for future use; the type allows `passNumber: 3` but v1 input
 * never contains it. Pairs are processed left-to-right so edges are deterministic.
 */
import type { PassResult } from './slice-topology-types.js';
import { type LlmCallTrace, type MergeOptions, type MergeResult } from './cross-pass-edge-static-scan-support.js';
export type { LlmCallTrace, MergeOptions, MergeResult };
export declare function merge(passes: readonly PassResult[], opts: MergeOptions): Promise<MergeResult>;