refactor(hunt): replace admin middleware with auth and implement membership state

- Change middleware from 'admin' to 'auth' on hunt and quest admin pages
- Add global hunt store to track current hunt ID and membership status
- Use hunt store membership state to conditionally display admin UI elements
- Handle fetch errors gracefully with alerts and back navigation buttons
- Update admin UI logic to depend on membership state instead of user role
- Add membership state update after API calls in hunt, quest, teams, and admin pages
- Refactor UI templates to show error messages when fetch fails
- Centralize membership logic for better authorization control in frontend

app/layouts/default.vue

@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { sluggy } from '#imports';
+import { useHuntStore } from '~/stores/hunt';
 import { useTitleStore } from '~/stores/title';
 
 const { loggedIn, clear, user } = useUserSession();
@@ -8,10 +9,18 @@ const localePath = useLocalePath();
 const route = useRoute();
 const breakpoints = useBreakpoint();
 const titleStore = useTitleStore();
+const huntStore = useHuntStore();
 
 const isSidebarVisible = ref(breakpoints.mdUp);
 
 const slugs = computed(() => checkSlug(route.params));
+
+const isHuntAdmin = computed(
+  () =>
+    slugs.value?.huntSlug !== undefined &&
+    huntStore.huntId === slugs.value.huntSlug.id &&
+    huntStore.isMember
+);
 </script>
 
 <template>
@@ -75,7 +84,7 @@ const slugs = computed(() => checkSlug(route.params));
           </VaSidebarItemContent>
         </VaSidebarItem>
         <VaSidebarItem
-          v-if="slugs?.huntSlug && user?.role === 'ADMIN'"
+          v-if="slugs?.huntSlug && isHuntAdmin"
           text-color="danger"
           hover-color="danger"
           active-color="onDanger"
@@ -90,7 +99,7 @@ const slugs = computed(() => checkSlug(route.params));
           </VaSidebarItemContent>
         </VaSidebarItem>
         <VaSidebarItem
-          v-if="slugs?.huntSlug && user?.role === 'ADMIN'"
+          v-if="slugs?.huntSlug && isHuntAdmin"
           text-color="danger"
           hover-color="danger"
           active-color="onDanger"
@@ -125,7 +134,7 @@ const slugs = computed(() => checkSlug(route.params));
           </VaSidebarItemContent>
         </VaSidebarItem>
         <VaSidebarItem
-          v-if="slugs?.huntSlug && slugs?.questSlug && user?.role === 'ADMIN'"
+          v-if="slugs?.huntSlug && slugs?.questSlug && isHuntAdmin"
           text-color="danger"
           hover-color="danger"
           active-color="onDanger"