Fetch a single tenant specialty by its ID

Returns the detail of a single tenant specialty record belonging to the tenant identified by the tenant-id header.

What it does: Retrieves one tenant specialty by its unique identifier, including its tenant-specific metadata (display name, description, change reason).

When to use: Use this when you already hold the id of a tenant specialty (for example, from a prior GET /tenant-specialties response) and need its detail. Do not use this as a lookup-by-name or lookup-by-classification — use the list or by-classification endpoints for those.

How to call it: Supply the required tenant-id header and the tenant specialty id as a path segment. id is an opaque, server-assigned string (assigned as a UUIDv4 by the data layer at creation time); the API does not otherwise constrain its format. Requires the READ_TENANT_SPECIALTY permission.

What you get back: The tenant specialty's entity content (display name, description, change reason) on 200. Returns 404 if no specialty with the given id exists for the supplied tenant-id.