Add regression coverage for queue metadata/policy persistence across restarts

[Copilot]

Users requested the ability to persist queue state (queues, metadata, and stored access policies) so pre-initialized test environments and Docker images could be built without custom startup scripts, mirroring existing blob container persistence.

Investigation

• Confirmed LokiQueueMetadataStore already persists queues, metadata, and access policies (ACLs) to disk via LokiJS, on par with blob container persistence, enabled by default unless --inMemoryPersistence is set.
• Manually verified end-to-end: created a queue with metadata via the Azure SDK, gracefully restarted the server against the same data directory, and confirmed the queue, metadata, and access policy all survived.

Changes

• Added tests/queue/queuePersistence.test.ts: a disk-backed regression test that creates a queue with metadata and an access policy, restarts the QueueServer against the same DB paths, and asserts all three survive the restart.

await queueClient.create({ metadata: { key: "value" } });
await queueClient.setAccessPolicy(queueAcl);
await server.close();

// New server instance, same metadata/extent DB paths
server = createServer();
await server.start();
const properties = await queueClient.getProperties();
assert.deepStrictEqual(properties.metadata, { key: "value" });

No production code changes were required — this PR locks in the existing behavior with explicit regression coverage.

• Fixes Store the state of queues for creating pre initialized Docker images  #14

[Copilot]

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[Copilot]

🟡 Changes recommended

The new test includes a service-port mismatch and uses an invalid ISO date plus an overly strict equality assertion that can make the regression coverage brittle or misleading.

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Review details

• Files reviewed: 1/1 changed files
• Comments generated: 3
• Review effort level: Lite