As discussed in the weekly meeting and in issue #405 (specifically point 3: Loss of information when removing duplicate entries), keeping different sources for an entered instrument name allows the reviewer to verify the label based on the full array of available sources.

To support this, we need an array of source objects, each containing a status field. While none of the sources in this array are verified, the same instrument label with different sources can still be added. Once a reviewer verifies one of the sources (or the instrument label is updated via Wikidata), adding a new label with different sources should no longer be allowed.

Since this structure may result in multiple verified sources for a single instrument name, we need to reconsider whether showing only one source to the user is sufficient. If it is sufficient, should it always be the first entered source, or should the reviewer decide which one is displayed?