Remove comments heading and empty state

Drop the "Comments" section title (including the count) and the
"no comments yet" placeholder — the comment list now starts directly
with skeletons or comments followed by the form. The comments.none key
stays for the sidebar; comments.title is removed from both locales.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

app/pages/t/[id].vue

@@ -992,10 +992,6 @@ async function deleteComment(commentId: number) {
       />
 
       <section class="mx-auto mt-6 w-full lg:w-2/5">
-        <h2 class="mb-3 font-semibold">
-          {{ $t('comments.title') }}<template v-if="data"> ({{ allComments.length }})</template>
-        </h2>
-
         <ul v-if="!data" class="space-y-3" aria-hidden="true">
           <li
             v-for="i in 3"
@@ -1076,9 +1072,6 @@ async function deleteComment(commentId: number) {
             </div>
           </li>
         </ul>
-        <p v-else class="text-sm text-muted-foreground">
-          {{ $t('comments.none') }}
-        </p>
 
         <form
           v-if="user"

i18n/locales/de.json

@@ -98,7 +98,6 @@
     "removePeriod": "Zeitraum-Filter entfernen"
   },
   "comments": {
-    "title": "Kommentare",
     "none": "Noch keine Kommentare.",
     "loading": "Lade Kommentare…",
     "placeholder": "Kommentar schreiben… {'@'} zum Erwähnen, Dateien hierher ziehen",

i18n/locales/en.json

@@ -98,7 +98,6 @@
     "removePeriod": "Remove time range filter"
   },
   "comments": {
-    "title": "Comments",
     "none": "No comments yet.",
     "loading": "Loading comments…",
     "placeholder": "Write a comment… {'@'} to mention, drop files here",