/**
 * Tests for the pack discovery substrate (mmnto-ai/totem#1768, ADR-097
 * § 5 Q5 + § 10).
 *
 * Covers invariants 1, 2, 3, 4, 8 from `.totem/specs/pack-substrate-bundle.md`:
 *
 * - Missing manifest → empty packs, no throw.
 * - Malformed manifest → fail loud.
 * - peerDependencies engine version mismatch → structured fail loud.
 * - Re-load after seal → throw.
 * - Pack callback can register chunker + language; lookups return registered values.
 *
 * Uses the `inMemoryPacks` test escape hatch to drive the registration
 * phase without writing fixture pack packages to `node_modules`.
 */
export {};
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