Se corrigen bugs sobre crear carreras, filtrado y que aparezcan las materias cuando se crean

src/routes/_authenticated/carreras.tsx

@@ -126,6 +126,17 @@ function RouteComponent() {
   const [detail, setDetail] = useState<CarreraRow | null>(null)
   const [editCarrera, setEditCarrera] = useState<CarreraRow | null>(null)
   const [createOpen, setCreateOpen] = useState(false)
+  const [deleteTarget, setDeleteTarget] = useState<CarreraRow | null>(null)
+
+  // ✅ Se declara UNA SOLA VEZ
+  const { setOpen: setDeleteOpen, dialog: deleteDialog } = useDeleteCarreraDialog(
+    deleteTarget?.id ?? "",
+    async () => {
+      await qc.invalidateQueries({ queryKey: carrerasKeys.root })
+      router.invalidate()
+      setDeleteTarget(null)
+    }
+  )
 
   const filtered = useMemo(() => {
     const term = q.trim().toLowerCase()
@@ -198,10 +209,7 @@ function RouteComponent() {
               const border = tint(fac?.color, 0.28)
               const chip = tint(fac?.color, 0.1)
               const IconComp = (fac?.icon && (Icons as any)[fac.icon]) || Icons.Building2
-              const { setOpen: setDeleteOpen, dialog: deleteDialog } = useDeleteCarreraDialog(c.id, async () => {
-                await qc.invalidateQueries({ queryKey: carrerasKeys.root })
-                router.invalidate()
-              })
+             
               return (
                 <ContextMenu key={c.id}>
                   <ContextMenuTrigger onClick={(e) => openContextMenu(e)}>
@@ -233,7 +241,10 @@ function RouteComponent() {
                     <ContextMenuItem onClick={() => setEditCarrera(c)}>
                       <Icons.Pencil className="w-4 h-4 mr-2" /> Editar
                     </ContextMenuItem>
-                    <ContextMenuItem onClick={() => setDeleteOpen(true)}>
+                    <ContextMenuItem  onClick={() => {
+                    setDeleteTarget(c)
+                    setDeleteOpen(true)
+                  }}>
                       <Icons.Trash className="w-4 h-4 mr-2" /> Eliminar
                     </ContextMenuItem>
                   </ContextMenuContent>

src/routes/_authenticated/plan/$planId.tsx

@@ -49,7 +49,10 @@ export const Route = createFileRoute("/_authenticated/plan/$planId")({
 // ...existing code...
 function RouteComponent() {
   const qc = useQueryClient()
-  const { plan, asignaturas: asignaturasPreview } = Route.useLoaderData() as LoaderData
+  //const { plan, asignaturas: asignaturasPreview } = Route.useLoaderData() as LoaderData
+  const { plan } = Route.useLoaderData() as LoaderData
+
+  const { data: asignaturasPreview } = useSuspenseQuery(asignaturasPreviewOptions(plan.id))
   const auth = useSupabaseAuth()
   const asignaturasCount = asignaturasPreview.length