feat: registration with invite codes

src/router/index.ts

@@ -28,12 +28,25 @@ const router = createRouter({
       name: 'account',
       component: () => import('../views/AccountView.vue'),
     },
+    // Intentionally not linked from anywhere in the UI — reached only via an
+    // invite link (see router.beforeEach below) or by typing the URL directly.
+    {
+      path: '/register',
+      name: 'register',
+      component: () => import('../views/RegisterView.vue'),
+    },
   ],
 })
 
 router.beforeEach((to) => {
   const authStore = useAuthStore()
 
+  // An invite link may point anywhere (e.g. the app root) so it still works
+  // if the recipient doesn't have the app installed/bookmarked at /register.
+  if (to.name !== 'register' && typeof to.query.invite === 'string' && to.query.invite) {
+    return { name: 'register', query: { invite: to.query.invite } }
+  }
+
   if (to.meta.requiresAuth && !authStore.isAuthenticated) {
     return { name: 'login', query: { redirect: to.fullPath } }
   }