feat: rework multi account

src/routes/_app.tsx

@@ -0,0 +1,14 @@
+import { commands } from '@/commands.gen'
+import { createFileRoute, redirect } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/_app')({
+  beforeLoad: async () => {
+    const accounts = await commands.getAccounts()
+
+    if (!accounts.length) {
+      throw redirect({ to: '/new', replace: true })
+    }
+
+    return { accounts }
+  },
+})