Avoid wildcard search if unnecessary

As a performance improvement, avoid the `LIKE` SQL query if the patient
name query does not contain any wildcards.

Author: carlosmartinez

src/services/storage.py

@@ -405,7 +405,10 @@ def find_worklist_items(
         if patient_name:
             # Convert DICOM wildcards (* → %, ? → _) to SQL LIKE syntax.
             sql_pattern = patient_name.replace("*", "%").replace("?", "_")
-            where_clauses.append("UPPER(patient_name) LIKE UPPER(?)")
+            if sql_pattern == patient_name:  # no wildcards were present
+                where_clauses.append("UPPER(patient_name) = UPPER(?)")
+            else:
+                where_clauses.append("UPPER(patient_name) LIKE UPPER(?)")
             params.append(sql_pattern)
 
         if where_clauses: