v1.4.1: 관리자 미디어 업로드 한도·라이브 에디터 UX 개선

종류별 업로드 크기 한도와 413 안내를 추가하고, 임베드·미디어 라이브 프리뷰·제목 Enter 포커스·스크롤 동작을 보정한다.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/content/ProseEmbed.vue

@@ -59,9 +59,48 @@ const getTweetId = (value) => {
   return ''
 }
 
+/**
+ * Mastodon 공개 게시물 URL인지 확인하고 embed URL을 반환한다.
+ * @param {string} value - Mastodon 게시물 URL
+ * @returns {string} Mastodon embed URL
+ */
+const getMastodonEmbedUrl = (value) => {
+  try {
+    const parsedUrl = new URL(value.trim())
+    const path = parsedUrl.pathname.replace(/\/$/, '')
+    const isKnownNonMastodonHost = [
+      'twitter.com',
+      'x.com',
+      'mobile.twitter.com',
+      'youtube.com',
+      'www.youtube.com',
+      'youtu.be'
+    ].includes(parsedUrl.hostname.replace(/^www\./, ''))
+
+    if (
+      isKnownNonMastodonHost ||
+      !['http:', 'https:'].includes(parsedUrl.protocol)
+    ) {
+      return ''
+    }
+
+    if (/^\/@[^/]+\/\d+$/.test(path) || /^\/users\/[^/]+\/statuses\/\d+$/.test(path)) {
+      return `${parsedUrl.origin}${path}/embed`
+    }
+  } catch {
+    return ''
+  }
+
+  return ''
+}
+
 const youtubeId = computed(() => getYouTubeId(props.url))
 const youtubeEmbedUrl = computed(() => youtubeId.value ? `https://www.youtube.com/embed/${youtubeId.value}` : '')
 const tweetId = computed(() => getTweetId(props.url))
+const mastodonEmbedUrl = computed(() => getMastodonEmbedUrl(props.url))
+const mastodonIframeRef = ref(null)
+const mastodonEmbedHeight = ref(640)
+const mastodonEmbedId = ref(0)
 
 /**
  * 외부 링크로 열어도 되는 URL인지 확인한다.
@@ -92,10 +131,74 @@ const tweetEmbedUrl = computed(() => {
 
   return `https://platform.twitter.com/embed/Tweet.html?id=${encodeURIComponent(tweetId.value)}&theme=${twitterTheme}&dnt=true`
 })
+
+/**
+ * Mastodon embed iframe에 실제 콘텐츠 높이 계산을 요청한다.
+ * @returns {void}
+ */
+const requestMastodonEmbedHeight = () => {
+  if (!mastodonIframeRef.value?.contentWindow || !mastodonEmbedId.value) {
+    return
+  }
+
+  mastodonIframeRef.value.contentWindow.postMessage({
+    type: 'setHeight',
+    id: mastodonEmbedId.value
+  }, '*')
+}
+
+/**
+ * Mastodon embed 높이 응답을 반영한다.
+ * @param {MessageEvent} event - iframe 메시지 이벤트
+ * @returns {void}
+ */
+const handleMastodonEmbedMessage = (event) => {
+  const data = event.data || {}
+
+  if (
+    !mastodonIframeRef.value ||
+    event.source !== mastodonIframeRef.value.contentWindow ||
+    typeof data !== 'object' ||
+    data.type !== 'setHeight' ||
+    data.id !== mastodonEmbedId.value ||
+    typeof data.height !== 'number'
+  ) {
+    return
+  }
+
+  try {
+    const expectedOrigin = new URL(mastodonEmbedUrl.value).origin
+
+    if (event.origin !== expectedOrigin) {
+      return
+    }
+  } catch {
+    return
+  }
+
+  mastodonEmbedHeight.value = Math.max(320, Math.ceil(data.height))
+}
+
+onMounted(() => {
+  mastodonEmbedId.value = Math.floor(Math.random() * 1000000000) + 1
+  window.addEventListener('message', handleMastodonEmbedMessage)
+})
+
+onBeforeUnmount(() => {
+  window.removeEventListener('message', handleMastodonEmbedMessage)
+})
+
+watch(mastodonEmbedUrl, () => {
+  mastodonEmbedHeight.value = 640
+  requestMastodonEmbedHeight()
+})
 </script>
 
 <template>
-  <div class="prose-embed prose-embed-card my-8 overflow-hidden rounded-[10px] border border-[var(--site-line)] bg-[var(--site-panel)]">
+  <div
+    class="prose-embed prose-embed-card my-8 overflow-hidden rounded-[10px]"
+    :class="tweetEmbedUrl ? 'mx-auto max-w-[550px]' : mastodonEmbedUrl ? 'mx-auto max-w-[560px] border border-[var(--site-line)] bg-[var(--site-panel)]' : 'border border-[var(--site-line)] bg-[var(--site-panel)]'"
+  >
     <iframe
       v-if="youtubeEmbedUrl"
       class="prose-embed__frame aspect-video w-full"
@@ -108,11 +211,25 @@ const tweetEmbedUrl = computed(() => {
     <iframe
       v-else-if="tweetEmbedUrl"
       :key="tweetEmbedUrl"
-      class="prose-embed__tweet min-h-[420px] w-full border-0 sm:min-h-[458px]"
+      class="prose-embed__tweet block min-h-[560px] w-full border-0 sm:min-h-[620px]"
       :src="tweetEmbedUrl"
       title="Embedded post"
       loading="lazy"
     />
+    <iframe
+      v-else-if="mastodonEmbedUrl"
+      :key="mastodonEmbedUrl"
+      ref="mastodonIframeRef"
+      class="prose-embed__mastodon block w-full border-0"
+      :src="mastodonEmbedUrl"
+      :height="mastodonEmbedHeight"
+      title="Embedded Mastodon post"
+      allow="fullscreen"
+      loading="lazy"
+      sandbox="allow-scripts allow-same-origin allow-popups"
+      scrolling="no"
+      @load="requestMastodonEmbedHeight"
+    />
     <a
       v-else-if="safeExternalUrl"
       class="prose-embed__link block p-5 text-sm font-semibold text-[var(--site-text)] hover:opacity-70"