working on project tree update upon task creation/deletion/update

frontend/src/routes/task/ListTask.svelte

@@ -14,6 +14,7 @@
 
     let {
         estimated_time,
+        lastEvent,
         show_closed,
         siblings,
         states = {},
@@ -141,6 +142,18 @@
         estimated_time.sum += task.estimated_time;
     }
 
+    $effect(() => {
+		if (lastEvent && lastEvent.task) {
+			if (children && lastEvent.task.parent_task_id == task.id) {
+				if (lastEvent.event == 'delete'){
+					delete children[lastEvent.task.id];
+				} else {
+					children[lastEvent.task.id] = lastEvent.task;
+				}
+			}
+		}
+	});
+
     onMount(loadChildren);
 </script>
 
@@ -170,7 +183,7 @@
     <button class="symbol" title={t('add_object',{object:t('subtask')})} onclick={addSubtask}></button>
     <button class="symbol" title={t('timetracking')} onclick={addTime}></button>
     {#if children}
-    <TaskList {states} tasks={children} {estimated_time} {show_closed} />
+    <TaskList {states} {lastEvent} tasks={children} {estimated_time} {show_closed} />
     {/if}
 </li>
 {/if}