/**
 * Characterization test for cross-shard merge determinism (Phase 0).
 *
 * The shipping `graph` engine is the sharded per-package build. Shard
 * workers complete in nondeterministic order, so the orchestrator hands
 * `mergeAndResolveShards` a fragment array whose ORDER varies run to run.
 * The merged catalog MUST be a pure function of the fragment SET — the
 * same fragments in a different order must produce a structurally
 * identical catalog (same function keys, same per-occurrence edge sets,
 * same boundary stats). Anything order-dependent here is the determinism
 * drift Phase 3 must fix.
 *
 * This test builds two minimal fragments with a cross-boundary call
 * between them and runs `mergeAndResolveShards` with the fragments in both
 * orders, asserting structural equality. Any divergence is flagged with a
 * `// DRIFT:` comment as a characterization signal.
 */
export {};
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