Add viewer-range categories, nomination tracking, dynamic showact form, session timeout, share URLs, and workflow-per-season

Features:
- Category viewer ranges + subcategory templates (admin group modal, tree workspace)
- Nomination enrichment via TwitchTracker API (NominationEnrichmentService,
  TwitchTrackerViewerStatsProvider) with admin tracking rules editor
- Nomination group tracker: CategoryGroupName as primary identifier,
  CategoryId stays as nullable legacy field; StreamerIdentity table
- Dynamic showact application form builder (AdminShowactFormBuilder,
  ShowactApplicationSchedule)
- Session idle timeout setting (AdminSessionTimeoutCard)
- Share URLs for X and Discord (SiteSettings, public extras)
- Workflow rules now stored per season (falls back to global SiteSettings)
- New admin routes: settings/access, settings/workflows, tracking-rules
- New admin review workspace with subcategory tabs
- AdminCategoriesView rebuilt with group/subcategory modals

Migrations (all additive):
- AddShareUrls, AddShowactDynamicForm, AddCategoryViewerRanges,
  AddSessionIdleTimeoutSettings, AddSeasonSubcategoryTemplates,
  AddNominationGroupTrackerIdentity, AddShowactApplicationSchedule,
  AddSeasonWorkflowRulesJson

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/views/admin/AdminAnalyticsView.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
-import { computed, ref } from 'vue'
+import { computed, ref, watch } from 'vue'
 import { BarChart3, CheckCircle2, ExternalLink, TrendingUp } from '@lucide/vue'
-import { RouterLink } from 'vue-router'
+import { RouterLink, useRoute, useRouter } from 'vue-router'
 
 import AdminPageHeader from '../../components/admin/AdminPageHeader.vue'
 import AdminSeasonToolbar from '../../components/admin/AdminSeasonToolbar.vue'
@@ -23,6 +23,8 @@ const {
   totalVotes,
 } = useAdminAnalyticsManager()
 
+const route = useRoute()
+const router = useRouter()
 const healthFilter = ref<string>('Alle')
 const groupFilter = ref<string>('Alle')
 
@@ -42,6 +44,43 @@ const healthStatusOptions = [
   { key: 'Bereit', label: 'Bereit', dot: 'bg-sky-400' },
   { key: 'Gewinner gesetzt', label: 'Gewinner', dot: 'bg-emerald-400' },
 ]
+
+function applyRouteFilters() {
+  const rawHealth = Array.isArray(route.query.health) ? route.query.health[0] : route.query.health
+  const rawGroup = Array.isArray(route.query.group) ? route.query.group[0] : route.query.group
+
+  healthFilter.value = healthStatusOptions.some((option) => option.key === rawHealth) ? String(rawHealth) : 'Alle'
+  groupFilter.value = groupOptions.value.includes(String(rawGroup)) ? String(rawGroup) : 'Alle'
+}
+
+watch(
+  () => [route.query.health, route.query.group, groupOptions.value.join('|')] as const,
+  () => {
+    applyRouteFilters()
+  },
+  { immediate: true },
+)
+
+watch([healthFilter, groupFilter], ([nextHealth, nextGroup]) => {
+  const currentHealth = Array.isArray(route.query.health) ? route.query.health[0] : route.query.health
+  const currentGroup = Array.isArray(route.query.group) ? route.query.group[0] : route.query.group
+
+  const normalizedHealth = nextHealth === 'Alle' ? undefined : nextHealth
+  const normalizedGroup = nextGroup === 'Alle' ? undefined : nextGroup
+
+  if (currentHealth === normalizedHealth && currentGroup === normalizedGroup) {
+    return
+  }
+
+  const nextQuery = { ...route.query } as Record<string, string>
+  if (normalizedHealth) nextQuery.health = normalizedHealth
+  else delete nextQuery.health
+
+  if (normalizedGroup) nextQuery.group = normalizedGroup
+  else delete nextQuery.group
+
+  void router.replace({ query: nextQuery })
+})
 </script>
 
 <template>
@@ -163,6 +202,14 @@ const healthStatusOptions = [
               <p class="mt-3 text-xs font-semibold uppercase tracking-[0.16em] text-slate-500">{{ insight.label }}</p>
               <strong class="mt-1 block text-2xl text-slate-950">{{ insight.value }}</strong>
               <p class="mt-1 text-xs leading-5 text-slate-500">{{ insight.note }}</p>
+              <RouterLink
+                v-if="'to' in insight && insight.to"
+                :to="insight.to"
+                class="mt-3 inline-flex items-center gap-1 text-xs font-semibold text-violet-700 hover:text-violet-800 hover:underline"
+              >
+                Öffnen
+                <ExternalLink class="h-3.5 w-3.5" />
+              </RouterLink>
             </div>
           </div>
         </Card>
@@ -261,7 +308,7 @@ const healthStatusOptions = [
         <RouterLink
           v-for="category in filteredHealth"
           :key="category.id"
-          to="/admin/categories"
+          :to="`/admin/categories?group=${encodeURIComponent(category.groupName || 'Ohne Gruppe')}`"
           class="grid items-center gap-3 px-5 py-3.5 transition hover:bg-violet-50/50 sm:grid-cols-[minmax(0,1fr)_80px_80px_100px_140px]"
         >
           <!-- Name + group -->