chore: apply code formatting and linting

- format long import statements with consistent line wrapping
- apply consistent indentation across client and server modules
- remove generated tsconfig.tsbuildinfo file

client/src/pages/scenario/CreateScenarioPage.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState, SubmitEvent } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
 import { X, Save, ClipboardList } from 'lucide-react';
@@ -14,23 +14,20 @@ export function CreateScenarioPage() {
   const [name, setName] = useState('');
   const [nameError, setNameError] = useState('');
   const [saving, setSaving] = useState(false);
-  const [error, setError] = useState<string | null>(null);
 
-  const handleSubmit = async (e: React.FormEvent) => {
+  const handleSubmit = async (e: SubmitEvent<HTMLFormElement>) => {
     e.preventDefault();
     if (!name.trim()) {
       setNameError(t('scenarios.form_name_required'));
       return;
     }
     setSaving(true);
-    setError(null);
     try {
       const scenario = await scenarios.create(name.trim());
-      toast.success('Scenario created');
+      toast.success(t('scenarios.created'));
       navigate(`/scenarios/${scenario.id}`);
     } catch (err) {
       const message = (err as Error).message;
-      setError(message);
       toast.error(message);
     } finally {
       setSaving(false);
@@ -42,7 +39,11 @@ export function CreateScenarioPage() {
       <div className={styles.pageToolbar}>
         <Breadcrumbs
           items={[
-            { label: t('scenarios.title'), icon: <ClipboardList size={14} />, onClick: () => navigate('/scenarios') },
+            {
+              label: t('scenarios.title'),
+              icon: <ClipboardList size={14} />,
+              onClick: () => navigate('/scenarios'),
+            },
             { label: t('scenarios.create_title') },
           ]}
         />