refactor: replace Toast with Sonner

frontend/app/features/admin/state/adminStore.ts

@@ -8,7 +8,7 @@ import {
 } from "../../../services/api";
 
 import { useScriptWorkspaceStore } from "../../platform/state/scriptWorkspaceStore";
-import { useUiStore } from "../../platform/state/uiStore";
+import { toast } from "sonner";
 
 type Notice = {
   tone: "success" | "error" | "info";
@@ -65,7 +65,9 @@ function requireApi(): WorkspaceBoundApi {
 }
 
 function pushToast(notice: Notice) {
-  useUiStore.getState().pushToast(notice);
+  if (notice.tone === "error") toast.error(notice.message);
+  else if (notice.tone === "info") toast.info(notice.message);
+  else toast.success(notice.message);
 }
 
 function setApiOnline(online: boolean) {