feat(WEB): 글로벌 검색, 토큰 갱신 개선, 템플릿 기능 확장

- CommandMenuSearch 컴포넌트 추가 (Cmd+K 글로벌 메뉴 검색)
- AuthenticatedLayout: 검색 통합, 모바일/데스크톱 스켈레톤 분리
- middleware: 토큰 갱신 후 리다이렉트 방식으로 변경 (race condition 방지)
- IntegratedDetailTemplate: stickyButtons 옵션 추가 (하단 고정 버튼)
- UniversalListPage: 컬럼 정렬 기능 추가 (sortBy, sortOrder)
- Sidebar: 축소 모드 패딩/간격 최적화
- 각종 컴포넌트 버그 수정 및 경로 정규화

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/board/BoardDetail/index.tsx

@@ -18,7 +18,7 @@
 import { useState, useCallback } from 'react';
 import { useRouter } from 'next/navigation';
 import { format } from 'date-fns';
-import { FileText, Download, ArrowLeft } from 'lucide-react';
+import { FileText, Download, ArrowLeft, Trash2, Edit } from 'lucide-react';
 import { PageLayout } from '@/components/organisms/PageLayout';
 import { PageHeader } from '@/components/organisms/PageHeader';
 import { Button } from '@/components/ui/button';
@@ -34,6 +34,7 @@ import { CommentSection } from '../CommentSection';
 import { deletePost } from '../actions';
 import type { Post, Comment } from '../types';
 import { isNextRedirectError } from '@/lib/utils/redirect-error';
+import { useMenuStore } from '@/store/menuStore';
 
 interface BoardDetailProps {
   post: Post;
@@ -43,6 +44,7 @@ interface BoardDetailProps {
 
 export function BoardDetail({ post, comments: initialComments, currentUserId }: BoardDetailProps) {
   const router = useRouter();
+  const sidebarCollapsed = useMenuStore((state) => state.sidebarCollapsed);
   const [showDeleteDialog, setShowDeleteDialog] = useState(false);
   const [isDeleting, setIsDeleting] = useState(false);
   const [comments, setComments] = useState<Comment[]>(initialComments);
@@ -119,28 +121,9 @@ export function BoardDetail({ post, comments: initialComments, currentUserId }:
         title="게시글 상세"
         description="게시글을 조회합니다."
         icon={FileText}
-        actions={
-          <div className="flex gap-2">
-            <Button variant="outline" onClick={handleBack}>
-              <ArrowLeft className="h-4 w-4 mr-2" />
-              목록
-            </Button>
-            {isMyPost && (
-              <>
-                <Button
-                  variant="outline"
-                  className="text-red-500 border-red-200 hover:bg-red-50 hover:text-red-600"
-                  onClick={() => setShowDeleteDialog(true)}
-                >
-                  삭제
-                </Button>
-                <Button onClick={handleEdit}>수정</Button>
-              </>
-            )}
-          </div>
-        }
       />
 
+      <div className="space-y-6 pb-24">
       {/* 게시글 카드 */}
       <Card className="mb-6">
         <CardHeader className="pb-4">
@@ -215,6 +198,31 @@ export function BoardDetail({ post, comments: initialComments, currentUserId }:
           onDeleteComment={handleDeleteComment}
         />
       )}
+      </div>
+
+      {/* 하단 액션 버튼 (sticky) */}
+      <div className={`fixed bottom-6 ${sidebarCollapsed ? 'left-[156px]' : 'left-[316px]'} right-[48px] px-6 py-3 bg-background/95 backdrop-blur rounded-xl border shadow-lg z-50 transition-all duration-300 flex items-center justify-between`}>
+        <Button variant="outline" onClick={handleBack}>
+          <ArrowLeft className="h-4 w-4 mr-2" />
+          목록으로
+        </Button>
+        {isMyPost && (
+          <div className="flex items-center gap-2">
+            <Button
+              variant="outline"
+              onClick={() => setShowDeleteDialog(true)}
+              className="text-destructive hover:bg-destructive hover:text-destructive-foreground"
+            >
+              <Trash2 className="h-4 w-4 mr-2" />
+              삭제
+            </Button>
+            <Button onClick={handleEdit}>
+              <Edit className="h-4 w-4 mr-2" />
+              수정
+            </Button>
+          </div>
+        )}
+      </div>
 
       {/* 삭제 확인 다이얼로그 */}
       <DeleteConfirmDialog