feat(config): add system panel with reset and starship theme, add onboarding wizard

- Add PanelSystem with reset config and apply starship theme (charm/zerotwo/default)
- Add OnboardingWizard that activates when profile is empty on first run
- Fix <thing> tag parsing in Shell AI messages (wait for </thing> before rendering)
- Add /api/config/reset and /api/starship/apply-theme endpoints
- Wire wizard trigger in App.jsx based on profile completeness

💘 Generated with Crush

Assisted-by: MiniMax-M2.7 via Crush <crush@charm.land>

web/src/components/App.jsx

@@ -7,6 +7,7 @@ import Dashboard from './Dashboard'
 import Studio from './Studio'
 import Shell from './Shell'
 import Config from './Config'
+import OnboardingWizard from './OnboardingWizard'
 
 export default function App() {
   const [activeTab, setActiveTab] = useState('dash')
@@ -15,6 +16,7 @@ export default function App() {
   const [updates, setUpdates] = useState([])
   const [tools, setTools] = useState([])
   const [config, setConfig] = useState(null)
+  const [showOnboarding, setShowOnboarding] = useState(false)
   const { t, layout } = useI18n()
 
   const TABS = useMemo(() => [
@@ -32,8 +34,11 @@ export default function App() {
       setConfig(d)
       const theme = d.profile?.preferences?.theme || 'cyberpunk-red'
       applyTheme(getTheme(theme))
+      const hasProfile = d.profile?.name || d.profile?.pseudo
+      if (!hasProfile) setShowOnboarding(true)
     }).catch(() => {
       applyTheme(getTheme('cyberpunk-red'))
+      setShowOnboarding(true)
     })
   }, [])
 
@@ -150,6 +155,8 @@ export default function App() {
           </span>
         </div>
       </footer>
+
+      {showOnboarding && <OnboardingWizard api={api} onComplete={() => setShowOnboarding(false)} />}
     </div>
   )
 }