Improve admin candidate modal UX and add clip menu visibility toggle

- Widen AdminCandidateEditorModal to size lg for better readability
- Rename "Clip-Compilation" section to "Clip / Compilation", update copy to reflect single clips too, drop upload hint and Clip-Plattform field, rename label to "Link"
- Fix NativeSelect dropdown clipping inside overflow-y-auto modals by teleporting the menu to body with fixed positioning, flip-up logic, and dynamic maxHeight capped to viewport
- Add ClipAdminMenuVisible setting (backend domain, contracts, endpoint, migration) with matching frontend types, defaults, form wiring, and toggle in the Clip-Workflow modal — hides the Clips nav item from the admin sidebar when disabled

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

frontend/src/views/admin/AdminClipsView.vue

@@ -23,6 +23,11 @@ const {
   adminError,
   clipToDelete,
   reviewNotes,
+  clipSubmissionsEnabled,
+  clipReviewEnabled,
+  clipDisabledMessage,
+  clipWorkflowStatusLabel,
+  clipWorkflowStatusClass,
   submissions,
   categoryName,
   clips,
@@ -54,10 +59,33 @@ watchAdminToast(adminMessage, adminError)
     <AdminPageHeader
       eyebrow="Clips"
       :icon="Film"
+      :description="clipWorkflowStatusLabel"
     />
 
     <AdminSeasonToolbar />
 
+    <div
+      class="flex flex-wrap items-start justify-between gap-4 rounded-2xl border px-5 py-4 shadow-sm"
+      :class="clipSubmissionsEnabled ? 'border-emerald-100 bg-emerald-50/70' : 'border-amber-100 bg-amber-50/70'"
+    >
+      <div class="min-w-0">
+        <div class="flex flex-wrap items-center gap-2">
+          <span :class="['rounded-full border px-3 py-1 text-xs font-semibold', clipWorkflowStatusClass]">
+            {{ clipWorkflowStatusLabel }}
+          </span>
+          <span :class="['rounded-full border px-3 py-1 text-xs font-semibold', clipReviewEnabled ? 'border-violet-200 bg-white text-violet-700' : 'border-slate-200 bg-white text-slate-600']">
+            Admin-Review {{ clipReviewEnabled ? 'sichtbar' : 'aus' }}
+          </span>
+        </div>
+        <p class="mt-2 text-sm leading-6 text-slate-600">
+          Clip-Einreichungen sind optional. Finale Voting-Clips werden am Kandidaten als externe YouTube-/Twitch-Links gepflegt.
+        </p>
+        <p v-if="!clipSubmissionsEnabled" class="mt-1 text-xs font-semibold text-amber-800">
+          Public-Hinweis: {{ clipDisabledMessage }}
+        </p>
+      </div>
+    </div>
+
     <section class="grid gap-4 lg:grid-cols-4">
       <Card v-for="stat in stats" :key="stat.label" class="p-5">
         <div class="flex items-start justify-between gap-4">
@@ -220,7 +248,7 @@ watchAdminToast(adminMessage, adminError)
         <div v-if="clips.length === 0" class="px-5 py-12 text-center">
           <Users class="mx-auto h-6 w-6 text-violet-300" />
           <p class="mt-2 text-sm text-slate-500">
-            {{ submissions.length === 0 ? 'Noch keine Clip-Einreichungen in diesem Jahr.' : 'Keine Treffer für den aktuellen Filter.' }}
+            {{ submissions.length === 0 && !clipSubmissionsEnabled ? 'Clip-Einreichungen sind deaktiviert. Bestehende Clips würden hier weiterhin prüfbar bleiben.' : submissions.length === 0 ? 'Noch keine Clip-Einreichungen in diesem Jahr.' : 'Keine Treffer für den aktuellen Filter.' }}
           </p>
         </div>
       </div>