chore: enable WebUI ESLint

webui/src/App.tsx

@@ -164,8 +164,7 @@ export default function App() {
           if (cancelled) return;
           if (secret) saveSecret(secret);
           const url = deriveWsUrl(boot.ws_path, boot.token);
-          let client: NanobotClient;
-          client = new NanobotClient({
+          const client = new NanobotClient({
             url,
             onReauth: async () => {
               try {
@@ -663,12 +662,13 @@ function Shell({
 
   useEffect(() => {
     return client.onStatus((status) => {
-      let startedAt = 0;
-      try {
-        startedAt = Number(window.localStorage.getItem(RESTART_STARTED_KEY) ?? "0");
-      } catch {
-        startedAt = 0;
-      }
+      const startedAt = (() => {
+        try {
+          return Number(window.localStorage.getItem(RESTART_STARTED_KEY) ?? "0");
+        } catch {
+          return 0;
+        }
+      })();
       if (!startedAt) return;
       if (status !== "open") {
         restartSawDisconnectRef.current = true;

webui/src/components/thread/ThreadComposer.tsx

@@ -286,7 +286,6 @@ function RunElapsedStrip({
   const showTimer = startedAt != null;
   const stripLabel = goalStateStripPreview(goalState, t);
   const showGoal = !!stripLabel?.trim();
-  if (!showTimer && !showGoal) return null;
 
   const objectiveFull = goalState?.objective?.trim() ?? "";
   const summaryFull = goalState?.ui_summary?.trim() ?? "";
@@ -349,6 +348,8 @@ function RunElapsedStrip({
     };
   }, [goalPanelOpen]);
 
+  if (!showTimer && !showGoal) return null;
+
   const elapsed =
     startedAt != null ? Math.max(0, Math.floor(Date.now() / 1000 - startedAt)) : 0;
   const m = Math.floor(elapsed / 60);

webui/src/tests/setup.ts

@@ -3,6 +3,43 @@ import { beforeEach } from "vitest";
 
 import i18n from "@/i18n";
 
+function createTestStorage(): Storage {
+  const store = new Map<string, string>();
+  return {
+    get length() {
+      return store.size;
+    },
+    clear() {
+      store.clear();
+    },
+    getItem(key: string) {
+      return store.get(String(key)) ?? null;
+    },
+    key(index: number) {
+      return Array.from(store.keys())[index] ?? null;
+    },
+    removeItem(key: string) {
+      store.delete(String(key));
+    },
+    setItem(key: string, value: string) {
+      store.set(String(key), String(value));
+    },
+  };
+}
+
+if (typeof window !== "undefined" && typeof localStorage.setItem !== "function") {
+  const storage = createTestStorage();
+  Object.defineProperty(window, "localStorage", {
+    value: storage,
+    configurable: true,
+  });
+  Object.defineProperty(globalThis, "localStorage", {
+    value: storage,
+    configurable: true,
+    writable: true,
+  });
+}
+
 // happy-dom doesn't ship with ``crypto.randomUUID``; shim a tiny v4-ish helper.
 if (!("randomUUID" in globalThis.crypto)) {
   Object.defineProperty(globalThis.crypto, "randomUUID", {