refactor(tests): update package.json scripts for linting and testing; enhance CI workflows for linting and testing integration

frontend/src/DomainsNewManager.jsx

@@ -58,13 +58,13 @@ function DomainsNewManager() {
   const [originalItems, setOriginalItems] = useState([]);
   const [etag, setEtag] = useState('');
   const [lastModified, setLastModified] = useState('');
-  const [contentLength, setContentLength] = useState(null);
+  const [, setContentLength] = useState(null);
   const [newItem, setNewItem] = useState({ domain: '', community: '' });
-  const [newInvalid, setNewInvalid] = useState({ domain: false, community: false });
+  const [, setNewInvalid] = useState({ domain: false, community: false });
   const [error, setError] = useState('');
   const [success, setSuccess] = useState('');
   const [searchTerm, setSearchTerm] = useState('');
-  const searchTimer = useRef(null);
+  const _searchTimer = useRef(null);
   const didInit = useRef(false);
   const [editingValue, setEditingValue] = useState('');
   const [editModalOpen, setEditModalOpen] = useState(false);
@@ -92,16 +92,16 @@ function DomainsNewManager() {
       try {
         const res = await api.get(`/communities`, { signal });
         setCommunities(Array.isArray(res.data) ? res.data : []);
-      } catch (e) {
-        if (e?.name === 'CanceledError' || e?.name === 'AbortError' || e?.code === 'ERR_CANCELED') return;
+      } catch (err) {
+        if (err?.name === 'CanceledError' || err?.name === 'AbortError' || err?.code === 'ERR_CANCELED') return;
       }
     })();
     (async () => {
       try {
         const r = await api.get('/ws/url', { signal });
         setWsUrl(String(r.data?.url || ''));
-      } catch (e) {
-        if (e?.name === 'CanceledError' || e?.name === 'AbortError' || e?.code === 'ERR_CANCELED') return;
+      } catch (err) {
+        if (err?.name === 'CanceledError' || err?.name === 'AbortError' || err?.code === 'ERR_CANCELED') return;
       }
     })();
     return () => controller.abort();
@@ -339,7 +339,7 @@ function DomainsNewManager() {
   };
 
   // Drag&Drop импорт
-  const onDropImport = async (e) => {
+  const _onDropImport = async (e) => {
     e.preventDefault();
     const file = e.dataTransfer?.files?.[0];
     if (!file) return;