feat: 뉴스 리스트에 RSS 요약 1줄 표시 + 상세 링크 현재 탭

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/routes/news/+page.svelte

@@ -176,8 +176,11 @@
               <span class="mt-1 text-[10px] {article.is_read ? 'text-[var(--text-dim)]' : 'text-[var(--accent)]'}">
                 {article.is_read ? '○' : '●'}
               </span>
-              <div class="min-w-0">
+              <div class="min-w-0 flex-1">
                 <p class="text-sm truncate {article.is_read ? 'text-[var(--text-dim)]' : 'font-medium'}">{article.title}</p>
+                {#if article.extracted_text}
+                  <p class="text-xs text-[var(--text-dim)] truncate mt-0.5">{article.extracted_text.split('\n').filter(l => l.trim() && l !== article.title)[0]?.slice(0, 120) || ''}</p>
+                {/if}
                 <div class="flex items-center gap-2 mt-0.5 text-[10px] text-[var(--text-dim)]">
                   <span>{article.ai_sub_group || ''}</span>
                   {#if article.ai_tags?.length}
@@ -228,8 +231,7 @@
             <a
               href="/documents/{selectedArticle.id}"
               class="text-xs text-[var(--text-dim)] hover:text-[var(--text)]"
-              target="_blank"
-            >문서 상세 ↗</a>
+            >문서 상세</a>
             <button
               onclick={() => selectedArticle = null}
               class="text-xs text-[var(--text-dim)] hover:text-[var(--text)]"