feat: 정치 피드 URL 복사 버튼 추가

src/main/resources/templates/feed.html

@@ -629,6 +629,11 @@
                            aria-label="재가공 스튜디오에서 열기">
                             <i data-lucide="wand-2" style="width:16px;"></i>
                         </a>`}
+                        ${FEED_TOPIC === 'POLITICS' ? `
+                        <button class="icon-btn" title="영상 URL 복사" aria-label="영상 URL 복사"
+                                onclick="copyVideoUrl('${esc(it.videoId)}')">
+                            <i data-lucide="copy" style="width:16px;"></i>
+                        </button>` : ''}
                         <button class="icon-btn${it.bookmarked ? ' on' : ''}" title="북마크"
                                 aria-label="북마크" aria-pressed="${it.bookmarked}"
                                 onclick="toggleBookmark(${it.id}, ${!!it.bookmarked})">
@@ -755,6 +760,25 @@
                 }
             }
 
+            async function copyVideoUrl(videoId){
+                const url = 'https://www.youtube.com/watch?v=' + videoId;
+                try {
+                    await navigator.clipboard.writeText(url);
+                    toast('영상 URL을 복사했습니다');
+                } catch(e) {
+                    const input = document.createElement('textarea');
+                    input.value = url;
+                    input.setAttribute('readonly', '');
+                    input.style.position = 'fixed';
+                    input.style.opacity = '0';
+                    document.body.appendChild(input);
+                    input.select();
+                    const copied = document.execCommand('copy');
+                    input.remove();
+                    toast(copied ? '영상 URL을 복사했습니다' : 'URL 복사에 실패했습니다', !copied);
+                }
+            }
+
             // ---------- 카드 액션 ----------
             async function toggleBookmark(id, current){
                 try {