Major UI overhaul and upload system improvements

- Removed hierarchy view and integrated functionality into index.html
- Added book-based document grouping with dedicated book-documents.html page
- Implemented comprehensive multi-file upload system with drag-and-drop reordering
- Added HTML-PDF matching functionality with download capability
- Enhanced upload workflow with 3-step process (File Selection, Book Settings, Order & Match)
- Added book conflict resolution (existing book vs new edition)
- Improved document order adjustment with one-click sort options
- Added modular header component system
- Updated API connectivity for Docker environment
- Enhanced viewer.html with PDF download functionality
- Fixed browser caching issues with version management
- Improved mobile responsiveness and modern UI design

frontend/static/js/api.js

@@ -3,8 +3,12 @@
  */
 class DocumentServerAPI {
     constructor() {
-        this.baseURL = '/api';  // Nginx 프록시를 통해 접근
+        // 도커 백엔드 API (24102 포트)
+        this.baseURL = 'http://localhost:24102/api';
         this.token = localStorage.getItem('access_token');
+        
+        console.log('🐳 API Base URL (DOCKER BACKEND):', this.baseURL);
+        console.log('🔧 도커 환경 설정 완료 - 버전 2025012380');
     }
 
     // 토큰 설정
@@ -184,6 +188,10 @@ class DocumentServerAPI {
         return await this.uploadFile('/documents/', formData);
     }
 
+    async updateDocument(documentId, updateData) {
+        return await this.put(`/documents/${documentId}`, updateData);
+    }
+
     async deleteDocument(documentId) {
         return await this.delete(`/documents/${documentId}`);
     }