Add full sync retirement for missing system default tasks

app/modules/services/default_tasks_export.py

@@ -12,6 +12,7 @@ from app.modules.services.models import ServiceCatalogue, ServiceDefaultTaskTemp
 
 
 _HEADERS = [
+    "system_task_id",
     "service_code",
     "service_name",
     "category_code",
@@ -41,6 +42,7 @@ _HEADERS = [
 ]
 
 _IMPORT_HEADERS = [
+    "system_task_id",
     "service_code",
     "sequence_no",
     "task_name",
@@ -168,6 +170,7 @@ def build_default_tasks_export(db: Session, *, catalogue_id: int | None = None)
 
         for task in tasks:
             all_tasks_ws.append([
+                task.id,
                 service.service_code,
                 service.service_name,
                 category_code,
@@ -196,6 +199,7 @@ def build_default_tasks_export(db: Session, *, catalogue_id: int | None = None)
                 task.description or "",
             ])
             import_ws.append([
+                task.id,
                 service.service_code,
                 task.sequence_no,
                 task.task_name,
@@ -252,9 +256,9 @@ def build_default_tasks_export(db: Session, *, catalogue_id: int | None = None)
         ("Default task rows exported", total_tasks),
         ("Active default task rows", active_tasks),
         ("Services without default tasks", services_without_tasks),
-        ("Import Ready sheet", "Matches the existing System Default Tasks import column order"),
+        ("Import Ready sheet", "Includes stable system_task_id so renaming/resequencing can update the correct task safely"),
         ("Historical inactive services", "Not included, so merged or inactive services do not create confusion"),
-        ("Important", "Review edited rows before re-importing. Service codes and task sequence numbers control matching and uniqueness."),
+        ("Important", "Keep system_task_id unchanged for existing tasks. New rows may leave it blank. Full Synchronization can retire existing tasks omitted from the workbook."),
     ]
     info_ws.append(["Item", "Value"])
     for item, value in info_rows: