revert(app): X 게시글 해시태그 하이라이트 제거

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

app/lib/views/schedule/schedule_detail_view.dart

@@ -499,8 +499,13 @@ class _ScheduleDetailViewState extends ConsumerState<ScheduleDetailView> {
           // 본문
           Padding(
             padding: const EdgeInsets.all(16),
-            child: _buildLinkedText(
+            child: Text(
               decodeHtmlEntities(schedule.content ?? schedule.title),
+              style: const TextStyle(
+                fontSize: 15,
+                height: 1.5,
+                color: AppColors.textPrimary,
+              ),
             ),
           ),
           // 이미지
@@ -686,69 +691,6 @@ class _ScheduleDetailViewState extends ConsumerState<ScheduleDetailView> {
     );
   }
 
-  /// 해시태그, URL을 감지해서 링크로 만드는 RichText
-  Widget _buildLinkedText(String text) {
-    // 해시태그 (#xxx) 또는 URL (https://...) 매칭
-    final pattern = RegExp(r'(#[^\s#]+)|(https?://[^\s]+)');
-    final spans = <InlineSpan>[];
-    int lastEnd = 0;
-
-    for (final match in pattern.allMatches(text)) {
-      // 매치 앞의 일반 텍스트
-      if (match.start > lastEnd) {
-        spans.add(TextSpan(
-          text: text.substring(lastEnd, match.start),
-          style: const TextStyle(
-            fontSize: 15,
-            height: 1.5,
-            color: AppColors.textPrimary,
-          ),
-        ));
-      }
-
-      final matched = match.group(0)!;
-      final isHashtag = matched.startsWith('#');
-
-      final url = isHashtag
-          ? 'https://x.com/hashtag/${Uri.encodeComponent(matched.substring(1))}?src=hashtag_click'
-          : matched;
-
-      spans.add(WidgetSpan(
-        alignment: PlaceholderAlignment.baseline,
-        baseline: TextBaseline.alphabetic,
-        child: GestureDetector(
-          onTap: () => _launchUrl(url),
-          child: Text(
-            matched,
-            style: TextStyle(
-              fontSize: 15,
-              height: 1.5,
-              color: AppColors.primary,
-              decoration: isHashtag ? TextDecoration.none : TextDecoration.underline,
-              decorationColor: AppColors.primary,
-            ),
-          ),
-        ),
-      ));
-
-      lastEnd = match.end;
-    }
-
-    // 남은 텍스트
-    if (lastEnd < text.length) {
-      spans.add(TextSpan(
-        text: text.substring(lastEnd),
-        style: const TextStyle(
-          fontSize: 15,
-          height: 1.5,
-          color: AppColors.textPrimary,
-        ),
-      ));
-    }
-
-    return RichText(text: TextSpan(children: spans));
-  }
-
   /// 인증 배지
   Widget _buildVerifiedBadge() {
     return SizedBox(