Open task after creating (vibe-kanban) (#184)

* Perfect! I've successfully implemented the feature to automatically open a task in the sidebar after creation. The change was made to the [`handleCreateTask` function in project-tasks.tsx](file:///private/var/folders/kr/jdxkcn7129j376nrg0stj9zm0000gn/T/vibe-kanban/vk-f5e5-open-task/frontend/src/pages/project-tasks.tsx#L152-L168). 

Now when users create a task using the "Create Task" button, it will automatically navigate to the task details view in the sidebar, making it consistent with the "Create & Start" button behavior that already had this functionality.

* prettier

frontend/src/pages/project-tasks.tsx

@@ -152,17 +152,21 @@ export function ProjectTasks() {
   const handleCreateTask = useCallback(
     async (title: string, description: string) => {
       try {
-        await tasksApi.create(projectId!, {
+        const createdTask = await tasksApi.create(projectId!, {
           project_id: projectId!,
           title,
           description: description || null,
         });
         await fetchTasks();
+        // Open the newly created task in the details panel
+        navigate(`/projects/${projectId}/tasks/${createdTask.id}`, {
+          replace: true,
+        });
       } catch (err) {
         setError('Failed to create task');
       }
     },
-    [projectId, fetchTasks]
+    [projectId, fetchTasks, navigate]
   );
 
   const handleCreateAndStartTask = useCallback(