This is an "SDR evolution" ticket, the intent of which is to reduce dependencies within DSA. (HT to @jcoyne for the idea!)

As far as we know, Solr is used within DSA for:

• Reports (could move to Argo which is more dependent on Solr);
• Embargo release
• Collection members
• Virtual objects

Since DSA already sits atop the source of truth for Cocina (Postgres), and it's queryable, DSA can get this information directly from Postgres without needing to consult Solr.