fix(web): clean up remaining Next.js artifacts in Vite migration

- Add vite-env.d.ts for import.meta.env and asset type declarations
- Remove dead layout.tsx (providers already in main.tsx)
- Fix useSearchParams destructuring to [searchParams] tuple (11 locations)
- Replace process.env.NEXT_PUBLIC_* with import.meta.env.VITE_*
- Fix langbotIcon.src to langbotIcon (Vite returns URL string)
- Fix Link href to Link to for react-router-dom
- Fix navigate({ scroll: false }) to { preventScrollReset: true }
- Fix [router] dependency arrays to [navigate]
- Remove Next.js plugin from tsconfig, set rsc: false in components.json
- Replace next lint with eslint in lint-staged

web/src/app/wizard/page.tsx

@@ -518,7 +518,7 @@ export default function WizardPage() {
     setIsSkipping(false);
     setShowSkipConfirm(false);
     navigate('/home');
-  }, [router, t]);
+  }, [navigate, t]);
 
   // ---- Render ----
 
@@ -1212,7 +1212,7 @@ function StepDone() {
     }
     setIsCompleting(false);
     navigate('/home/bots');
-  }, [router, t]);
+  }, [navigate, t]);
 
   return (
     <div className="relative flex flex-col items-center justify-center h-full min-h-[400px]">
@@ -1242,7 +1242,7 @@ function StepDone() {
         {t('wizard.done.backToWorkbench')}
       </Button>
 
-      <style jsx>{`
+      <style>{`
         @keyframes wizardConfetti {
           0% {
             transform: translateY(100vh) rotate(0deg);