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

frontend/messages/en.json

@@ -416,6 +416,8 @@
     "selectCaseHint": "Select a case from the list to view tasks.",
     "fromClinic": "From {name}",
     "sentAt": "Sent {date}",
+    "dueDateLabel": "Due {date}",
+    "overdueBadge": "Overdue",
     "taskProgressLabel": "Tasks: {completed} of {total} completed",
     "taskProgressShort": "{progress} tasks",
     "treatmentDetails": "Treatment details",
@@ -488,6 +490,7 @@
     "showCompleted": "Show completed",
     "importantOnly": "Important first",
     "assignedToMe": "Assigned to me",
+    "overdueOnly": "Overdue cases only",
     "assignedToStaff": "Assigned to {name}",
     "resetView": "Reset filters & sort",
     "showInCase": "Show in case",
@@ -500,6 +503,7 @@
     "filterSentTo": "To",
     "sortBy": "Sort by",
     "sortDate": "Date",
+    "sortDueDate": "Case due date",
     "sortStatus": "Status",
     "sortClinic": "Clinic",
     "sortPatient": "Patient",
@@ -512,7 +516,10 @@
     "groupingOffProsthesis": "Sorted by prosthesis type — case grouping is off.",
     "groupingOffTaskType": "Sorted by task type — case grouping is off.",
     "groupingOffStatus": "Sorted by status — case grouping is off.",
+    "groupingOffDueDate": "Sorted by due date — case grouping is off.",
     "caseReceivedAt": "Received {date}",
+    "caseDueDate": "Due {date}",
+    "overdueBadge": "Overdue",
     "caseTaskProgress": "{completed}/{total} tasks on this page",
     "clearFilters": "Clear filters",
     "commentsButton": "Comments",
@@ -678,6 +685,10 @@
     "selectLab": "Destination lab",
     "selectLabPlaceholder": "Choose a linked lab…",
     "sendToLab": "Send to lab",
+    "dueDateLabel": "Due date",
+    "dueDateOptional": "optional",
+    "dueDateLockedCompleted": "Due date cannot be changed after all tasks are completed.",
+    "dueDateUpdateError": "Failed to update due date.",
     "saveLabShipments": "Save lab shipments",
     "labDispatchSaveHint": "Saves shipment grouping without sending.",
     "successLabShipmentsSaved": "Lab shipments saved.",