improvement: duedate added for shipped cases. cases and tasks ui and ux updated accordingly.

frontend/src/lib/api/treatments.ts

@@ -83,6 +83,16 @@ export const treatmentsApi = {
     return response.data;
   },
 
+  updateLabCaseDueDate: async (
+    labCaseId: string,
+    dueDate: string | null,
+  ): Promise<{ success: boolean; data: LabCaseResponse }> => {
+    const response = await apiClient.patch(`/treatments/lab-cases/${labCaseId}/due-date`, {
+      dueDate,
+    });
+    return response.data;
+  },
+
   listLabCaseComments: async (
     labCaseId: string,
   ): Promise<{ success: boolean; data: LabCaseComment[] }> => {