docs consoliation work

docs/db/RULES.md

@@ -778,11 +778,13 @@ CREATE INDEX idx_large_table_col ON schema.large_table(column);
   "Persistence": {
     "Authority": "Postgres",
     "Scheduler": "Postgres",
-    "Concelier": "Mongo"
+    "Concelier": "Postgres"
   }
 }
 ```
 
+> **Note:** MongoDB storage was deprecated in Sprint 4400. All modules now use PostgreSQL. MongoDB-related patterns in this document are retained for historical reference only.
+
 ### 13.2 Connection String Security
 
 **RULE:** Connection strings MUST NOT be logged or included in exception messages.