feat: abrir sistema dentro do app e usar ícones do raven

apps/desktop/src/main.tsx

@@ -221,13 +221,7 @@ function App() {
   async function openSystem() {
     if (!token || !config) return
     const url = `${resolvedAppUrl}/machines/handshake?token=${encodeURIComponent(token)}`
-    try {
-      // open in default browser; fallback to in-webview
-      const { openUrl } = await import("@tauri-apps/plugin-opener")
-      await openUrl(url)
-    } catch {
-      window.location.replace(url)
-    }
+    window.location.href = url
   }
 
   async function reprovision() {