Enhance case size rendering and update form field attributes for better UI integration

atlas/tables.py

@@ -160,7 +160,12 @@ class CaseTable(SelectionTable):
             return mark_safe(", ".join(links))
         return "No collections"
 
-    def render_case_size(self, value):
+    def render_case_size(self, value, record):
+        if value is None:
+            try:
+                value = record.get_total_series_images_size()
+            except Exception:
+                value = None
         if value is None:
             return "-"
         return filesizeformat(value)