Use FHIR resource versioning interactions: vread a specific version and retrieve a resource history via _history

Verified steps

1. Perform a vread (version-specific read): GET [base]/[ResourceType]/[id]/_history/[vid] where vid is the version ID from Resource.meta.versionId; the server returns the resource as it existed at that specific version
2. Perform a resource-level history: GET [base]/[ResourceType]/[id]/_history to retrieve a Bundle of type 'history' containing all versions of that resource instance in descending chronological order
3. Use the _count parameter to paginate long history Bundles: GET [base]/Patient/123/_history?_count=10 returns the 10 most recent versions; follow Bundle.link[next] to retrieve older pages
4. Use the _since parameter on history to retrieve only versions created or updated after a given timestamp: GET [base]/Patient/123/_history?_since=2025-01-01T00:00:00Z for incremental auditing
5. Perform a type-level history: GET [base]/[ResourceType]/_history to retrieve all versions of all instances of a resource type; or a system-level history: GET [base]/_history for all resource versions across the entire server (use with extreme caution on large servers)
6. Inspect Bundle.entry[].request.method (PUT/POST/DELETE) and Bundle.entry[].response.status in the history Bundle to understand what operation produced each version