Implement onboarding reset functionality and enhance backup features

- Added a new method to reset the onboarding state, allowing users to re-initiate the onboarding process.
- Integrated backup creation functionality, enabling users to create encrypted backups of their node identity.
- Updated API endpoints to handle onboarding reset and backup creation requests.
- Enhanced UI components to support the new onboarding reset and backup features, including error handling and user feedback.
- Introduced new dependencies for cryptographic operations and data encoding.

neode-ui/src/router/index.ts

@@ -124,6 +124,22 @@ const router = createRouter({
   ],
 })
 
+// Session check with timeout - avoids endless spinner on mobile/slow networks
+const SESSION_CHECK_TIMEOUT_MS = 8000
+
+async function checkSessionWithTimeout(store: ReturnType<typeof useAppStore>): Promise<boolean> {
+  try {
+    return await Promise.race([
+      store.checkSession(),
+      new Promise<boolean>((resolve) =>
+        setTimeout(() => resolve(false), SESSION_CHECK_TIMEOUT_MS)
+      ),
+    ])
+  } catch {
+    return false
+  }
+}
+
 /**
  * Navigation Guard
  * Handles authentication and onboarding flow routing
@@ -134,16 +150,16 @@ router.beforeEach(async (to, _from, next) => {
 
   // Allow all public routes (login, onboarding) without auth check
   if (isPublic) {
-    // If authenticated and visiting /login, validate session first
+    // If authenticated and visiting /login: show login immediately, validate in background.
+    // This prevents endless spinner on mobile when checkSession hangs (slow/unreachable network).
     if (to.path === '/login' && store.isAuthenticated) {
       if (store.needsSessionValidation()) {
-        const valid = await store.checkSession()
-        if (valid) {
-          next({ name: 'home' })
-          return
-        }
-        // Session invalid, allow login page
         next()
+        checkSessionWithTimeout(store).then((valid) => {
+          if (valid) {
+            router.replace({ name: 'home' }).catch(() => {})
+          }
+        })
         return
       }
       next({ name: 'home' })
@@ -153,9 +169,9 @@ router.beforeEach(async (to, _from, next) => {
     return
   }
 
-  // Protected routes: validate session if stale auth from localStorage
+  // Protected routes: validate session if stale auth from localStorage (with timeout)
   if (store.needsSessionValidation()) {
-    const valid = await store.checkSession()
+    const valid = await checkSessionWithTimeout(store)
     if (!valid) {
       next('/login')
       return
@@ -164,9 +180,9 @@ router.beforeEach(async (to, _from, next) => {
     return
   }
 
-  // Not authenticated at all
+  // Not authenticated at all (with timeout to avoid endless spinner on mobile)
   if (!store.isAuthenticated) {
-    const hasSession = await store.checkSession()
+    const hasSession = await checkSessionWithTimeout(store)
     if (hasSession) {
       next()
       return