Label email subjects in message registry

app/pages/messages.vue

@@ -61,12 +61,14 @@ function channelLabel(channel: TemplateChannel['channel']) {
             </h3>
 
             <div class="mt-3 rounded-[20px] bg-[#f8fbf9] p-4">
-              <p
-                v-if="channel.subject"
-                class="text-xs font-semibold uppercase tracking-[0.12em] text-[#5c7b69]"
-              >
-                {{ channel.subject }}
-              </p>
+              <div v-if="channel.subject" class="space-y-1">
+                <p class="text-xs font-semibold uppercase tracking-[0.12em] text-[#5c7b69]">
+                  Тема
+                </p>
+                <p class="text-sm font-semibold text-[#123824]">
+                  {{ channel.subject }}
+                </p>
+              </div>
 
               <div class="mt-3 space-y-3 text-sm leading-6 text-[#123824]">
                 <p