feat: implement live-sync for tasks, workspace note sharing, and document locking system

frontend/src/features/triage/TasksView.tsx

@@ -96,6 +96,71 @@ export const TasksView: React.FC<TasksViewProps> = ({
     loadData();
   }, [refreshTrigger, selectedListId]);
 
+  // Live-Sync WebSocket listener for tasks
+  useEffect(() => {
+    const handleWs = (e: any) => {
+      const msg = e.detail;
+      if (!msg || !msg.event) return;
+
+      if (msg.event === 'TASK_CREATED') {
+        const created = msg.payload as Thought;
+        if (
+          created &&
+          (created.status === 'converted' ||
+            created.kanbanStatus ||
+            created.taskListId ||
+            created.isCompleted !== undefined)
+        ) {
+          setTasks((prev) => {
+            if (prev.some((t) => t.id === created.id)) return prev;
+            if (selectedListId !== 'all' && created.taskListId !== selectedListId) return prev;
+            return [created, ...prev];
+          });
+          onRefreshStats();
+        }
+      } else if (msg.event === 'TASK_UPDATED') {
+        const updated = msg.payload as Thought;
+        if (updated && updated.id) {
+          setTasks((prev) => {
+            const exists = prev.some((t) => t.id === updated.id);
+            if (!exists) {
+              if (
+                (updated.status === 'converted' ||
+                  updated.kanbanStatus ||
+                  updated.taskListId ||
+                  updated.isCompleted !== undefined) &&
+                (selectedListId === 'all' || updated.taskListId === selectedListId)
+              ) {
+                return [updated, ...prev];
+              }
+              return prev;
+            }
+            if (selectedListId !== 'all' && updated.taskListId !== selectedListId) {
+              return prev.filter((t) => t.id !== updated.id);
+            }
+            return prev.map((t) => {
+              if (t.id !== updated.id) return t;
+              return {
+                ...updated,
+                notes: activeNotesTaskId === updated.id ? t.notes : updated.notes,
+              };
+            });
+          });
+          onRefreshStats();
+        }
+      } else if (msg.event === 'TASK_DELETED') {
+        const deletedId = typeof msg.payload === 'string' ? msg.payload : msg.payload?.id;
+        if (deletedId) {
+          setTasks((prev) => prev.filter((t) => t.id !== deletedId));
+          onRefreshStats();
+        }
+      }
+    };
+
+    window.addEventListener('mindsift:ws', handleWs);
+    return () => window.removeEventListener('mindsift:ws', handleWs);
+  }, [selectedListId, activeNotesTaskId, onRefreshStats]);
+
   const handleToggleDone = async (task: Thought) => {
     triggerHaptic(15);
     const nextState = !task.isCompleted;