fix: Re-write Nuxt auth backend and get rid of sidebase auth (#6322)

frontend/pages/household/mealplan/planner.vue

@@ -75,7 +75,6 @@ import { useMealplans } from "~/composables/use-group-mealplan";
 import { useUserMealPlanPreferences } from "~/composables/use-users/preferences";
 
 export default defineNuxtComponent({
-  middleware: ["sidebase-auth"],
   setup() {
     const route = useRoute();
     const router = useRouter();

frontend/pages/household/mealplan/settings.vue

@@ -183,7 +183,6 @@ export default defineNuxtComponent({
     GroupMealPlanRuleForm,
     RecipeChips,
   },
-  middleware: ["sidebase-auth"],
   props: {
     modelValue: {
       type: Boolean,