Shop-Topbar: Level/XP/Odds links, Lock rechts; Shine nur bei eigenem Champion

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/App.vue

@@ -20,10 +20,6 @@ const kindLabel = { pvp: 'PvP', pve: 'PvE', carousel: 'Carousel' }
     <header>
       <span class="round">Runde {{ s.round.label }} · {{ kindLabel[s.round.kind] }}</span>
       <span class="stat">❤️ {{ s.player.hp }}</span>
-      <span class="stat">
-        Lvl {{ s.player.level }}
-        <template v-if="s.player.xp_needed !== null">({{ s.player.xp }}/{{ s.player.xp_needed }})</template>
-      </span>
       <span class="score">Boardstärke {{ s.player.score }}</span>
       <button class="fight" :disabled="s.over" @click="store.next()">
         {{ s.round.kind === 'pvp' ? 'Kampf' : 'Weiter' }} ▶