fix: remove 10 unused variables in File Manager and config files

Cleaned up more unused imports, parameters, and variables:
- FileManagerGrid.tsx: removed 4 unused variables (params, function)
- FileManagerContextMenu.tsx: removed Share import
- FileManagerSidebar.tsx: removed onLoadDirectory parameter
- DraggableWindow.tsx: removed Square import
- FileWindow.tsx: removed updateWindow variable
- ServerConfig.tsx: removed 2 unused error parameters

Reduced lint errors from 236 to 222 (14 errors fixed total)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/ui/Desktop/Apps/Credentials/CredentialEditor.tsx

@@ -42,9 +42,9 @@ export function CredentialEditor({
   onFormSubmit,
 }: CredentialEditorProps) {
   const { t } = useTranslation();
-  const [credentials, setCredentials] = useState<Credential[]>([]);
+  const [, setCredentials] = useState<Credential[]>([]);
   const [folders, setFolders] = useState<string[]>([]);
-  const [loading, setLoading] = useState(true);
+  const [, setLoading] = useState(true);
   const [fullCredentialDetails, setFullCredentialDetails] =
     useState<Credential | null>(null);
 
@@ -95,7 +95,7 @@ export function CredentialEditor({
         try {
           const fullDetails = await getCredentialDetails(editingCredential.id);
           setFullCredentialDetails(fullDetails);
-        } catch (error) {
+        } catch {
           toast.error(t("credentials.failedToFetchCredentialDetails"));
         }
       } else {