/**
 * SMI-5531: Atomic config-write primitive tests.
 * SMI-5883 Wave 2 (§8d/§8e): `acquireConfigLock` is now a thin wrapper over
 * the shared two-level `acquireOwnedLock` primitive (`owned-lock.ts`). The
 * age-based stale-lock test below is DELETED (its premise — clearing on file
 * age — is the behavior being removed), replaced by three tests asserting
 * the new owner-liveness-based contract: a v1 dead-PID lock reclaims
 * quickly, a v1 live-PID lock times out regardless of a backdated mtime, and
 * a legacy bare-PID lock (this module's OWN pre-SMI-5883 format) is NEVER
 * auto-reclaimed even when definitely dead (D-5).
 *
 * Uses the same tmpdir-per-test isolation harness as device-identity.test.ts
 * / index.test.ts (no shared HOME mutation needed here — these primitives
 * take an explicit path, not the global config path).
 */
export {};
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