diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index d47fec9..35d91b9 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -53,7 +53,13 @@
       "Bash(done)",
       "Bash(git add:*)",
       "Bash(git commit:*)",
-      "Bash(git push)"
+      "Bash(git push)",
+      "Bash(docker --version:*)",
+      "Bash(dpkg:*)",
+      "Bash(pip3:*)",
+      "Bash(chmod:*)",
+      "Bash(sudo apt install:*)",
+      "Bash(/usr/bin/soffice:*)"
     ],
     "deny": [],
     "ask": []
diff --git a/.dockerignore b/.dockerignore
deleted file mode 100644
index 58f7bf8..0000000
--- a/.dockerignore
+++ /dev/null
@@ -1,87 +0,0 @@
-# Git
-.git
-.gitignore
-.gitattributes
-
-# Python
-__pycache__
-*.py[cod]
-*$py.class
-*.so
-.Python
-env/
-venv/
-ENV/
-*.egg-info/
-dist/
-build/
-*.egg
-.pytest_cache/
-.coverage
-htmlcov/
-
-# Node
-node_modules/
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-.npm
-.yarn
-
-# IDE
-.vscode/
-.idea/
-*.swp
-*.swo
-*~
-.DS_Store
-
-# Environment files
-.env
-.env.local
-.env.*.local
-
-# Logs
-logs/
-*.log
-
-# Data directories (will be mounted as volumes)
-data/
-uploads/
-storage/
-models/
-
-# Backend specific
-backend/uploads/
-backend/storage/
-backend/models/
-backend/logs/
-backend/__pycache__/
-backend/*.egg-info/
-
-# Frontend specific
-frontend/node_modules/
-frontend/dist/
-frontend/.vite/
-frontend/.cache/
-
-# Documentation (not needed in container)
-*.md
-!README.md
-docs/
-demo_docs/
-
-# Claude and OpenSpec
-.claude/
-openspec/
-
-# OS
-Thumbs.db
-Desktop.ini
-
-# Temporary files
-*.tmp
-*.bak
-*.swp
-temp/
-tmp/
diff --git a/.env.docker b/.env.docker
deleted file mode 100644
index 4037ff1..0000000
--- a/.env.docker
+++ /dev/null
@@ -1,82 +0,0 @@
-# Tool_OCR - Docker Environment Configuration
-# Copy this file to .env when deploying with Docker
-
-# ===== Database Configuration =====
-MYSQL_HOST=mysql.theaken.com
-MYSQL_PORT=33306
-MYSQL_USER=A060
-MYSQL_PASSWORD=WLeSCi0yhtc7
-MYSQL_DATABASE=db_A060
-
-# ===== Application Configuration =====
-# External port (exposed to host)
-FRONTEND_PORT=12015
-
-# Security (IMPORTANT: Change SECRET_KEY in production!)
-SECRET_KEY=your-secret-key-here-please-change-this-to-random-string
-ALGORITHM=HS256
-ACCESS_TOKEN_EXPIRE_MINUTES=1440
-
-# ===== OCR Configuration =====
-# PaddleOCR model directory (inside container)
-PADDLEOCR_MODEL_DIR=/app/backend/models/paddleocr
-# Supported languages (comma-separated)
-OCR_LANGUAGES=ch,en,japan,korean
-# Default confidence threshold
-OCR_CONFIDENCE_THRESHOLD=0.5
-# Maximum concurrent OCR workers
-MAX_OCR_WORKERS=4
-
-# ===== File Upload Configuration =====
-# Maximum file size in bytes (50MB default)
-MAX_UPLOAD_SIZE=52428800
-# Allowed file extensions (comma-separated)
-ALLOWED_EXTENSIONS=png,jpg,jpeg,pdf,bmp,tiff,doc,docx,ppt,pptx
-# Upload directories (inside container)
-UPLOAD_DIR=/app/backend/uploads
-TEMP_DIR=/app/backend/uploads/temp
-PROCESSED_DIR=/app/backend/uploads/processed
-IMAGES_DIR=/app/backend/uploads/images
-
-# ===== Export Configuration =====
-# Storage directories (inside container)
-STORAGE_DIR=/app/backend/storage
-MARKDOWN_DIR=/app/backend/storage/markdown
-JSON_DIR=/app/backend/storage/json
-EXPORTS_DIR=/app/backend/storage/exports
-
-# ===== PDF Generation Configuration =====
-# Pandoc path (inside container)
-PANDOC_PATH=/usr/bin/pandoc
-# Font directory (inside container)
-FONT_DIR=/usr/share/fonts
-# Default PDF page size
-PDF_PAGE_SIZE=A4
-# Default PDF margins (mm)
-PDF_MARGIN_TOP=20
-PDF_MARGIN_BOTTOM=20
-PDF_MARGIN_LEFT=20
-PDF_MARGIN_RIGHT=20
-
-# ===== Translation Configuration (Reserved) =====
-# Enable translation feature (reserved for future)
-ENABLE_TRANSLATION=false
-# Translation engine: offline (argostranslate) or api (future)
-TRANSLATION_ENGINE=offline
-# Argostranslate models directory (inside container)
-ARGOSTRANSLATE_MODELS_DIR=/app/backend/models/argostranslate
-
-# ===== Background Tasks Configuration =====
-# Task queue type: memory (default) or redis (future)
-TASK_QUEUE_TYPE=memory
-# Redis URL (if using redis)
-# REDIS_URL=redis://localhost:6379/0
-
-# ===== CORS Configuration =====
-# Allowed origins (comma-separated, * for all)
-# For Docker, use the external URL
-CORS_ORIGINS=http://localhost:12015,http://127.0.0.1:12015
-
-# ===== Logging Configuration =====
-LOG_LEVEL=INFO
-LOG_FILE=/app/backend/logs/app.log
diff --git a/DOCKER_DEPLOYMENT.md b/DOCKER_DEPLOYMENT.md
deleted file mode 100644
index 08c3486..0000000
--- a/DOCKER_DEPLOYMENT.md
+++ /dev/null
@@ -1,524 +0,0 @@
-# Tool_OCR Docker 部署指南
-
-## 架構說明
-
-Tool_OCR 使用統一容器架構，將前端和後端封裝在同一個容器中：
-
-```
-┌─────────────────────────────────────┐
-│  Container (tool_ocr)               │
-│                                     │
-│  ┌──────────────────────────────┐  │
-│  │  Nginx :12010 (External)     │  │
-│  │  - Frontend Static Files     │  │
-│  │  - Reverse Proxy for API     │  │
-│  └─────────┬────────────────────┘  │
-│            │ proxy_pass             │
-│            ▼                        │
-│  ┌──────────────────────────────┐  │
-│  │  FastAPI :8000 (Internal)    │  │
-│  │  - OCR Processing            │  │
-│  │  - File Management           │  │
-│  │  - Export Services           │  │
-│  └──────────────────────────────┘  │
-│                                     │
-│  Supervisor manages both services   │
-└─────────────────────────────────────┘
-         │
-         │ Port 12010 only!
-         ▼
-    External Access
-```
-
-### 優勢
-
-1. **單一端口**: 只需要暴露一個端口 (12010)
-2. **簡化部署**: 一個容器包含完整應用
-3. **統一管理**: Supervisor 管理所有服務
-4. **生產就緒**: Nginx 提供高性能靜態文件服務和反向代理
-
-## 快速開始
-
-### 前置要求
-
-- Docker Engine 20.10+
-- Docker Compose 2.0+
-- 至少 4GB 可用內存
-- 至少 10GB 可用磁碟空間
-
-### 1. 準備環境配置
-
-**複製環境配置範本：**
-
-Linux/Mac:
-```bash
-cp .env.docker .env
-```
-
-Windows (PowerShell):
-```powershell
-Copy-Item .env.docker .env
-```
-
-**編輯 `.env` 文件，至少修改以下重要配置：**
-
-```bash
-# 修改為安全的密鑰
-SECRET_KEY=your-very-secure-random-key-here
-
-# 根據需要調整端口
-FRONTEND_PORT=12010
-
-# 根據實際情況配置 CORS
-CORS_ORIGINS=http://your-domain.com:12010,http://localhost:12010
-```
-
-### 2. 創建數據目錄
-
-Linux/Mac:
-```bash
-mkdir -p data/{uploads,storage,models,logs}
-```
-
-Windows (PowerShell):
-```powershell
-mkdir -p data/uploads, data/storage, data/models, data/logs
-```
-
-或使用跨平台命令：
-```bash
-mkdir -p data/uploads data/storage data/models data/logs
-```
-
-### 3. 構建並啟動容器
-
-```bash
-# 構建映像
-docker compose build
-
-# 啟動服務
-docker compose up -d
-
-# 查看日誌
-docker compose logs -f
-```
-
-> 注意：舊版本 Docker 使用 `docker-compose`（帶連字符），新版本使用 `docker compose`（無連字符）。兩者都支持。
-
-### 4. 驗證部署
-
-Linux/Mac:
-```bash
-# 檢查健康狀態
-curl http://localhost:12010/health
-
-# 訪問 API 文檔
-open http://localhost:12010/docs
-
-# 訪問前端界面
-open http://localhost:12010
-```
-
-Windows (PowerShell):
-```powershell
-# 檢查健康狀態
-curl http://localhost:12010/health
-
-# 在瀏覽器中打開
-Start-Process "http://localhost:12010"
-Start-Process "http://localhost:12010/docs"
-```
-
-## 管理命令
-
-> 提示：以下命令在 Windows、Linux 和 Mac 上通用。如果您使用舊版 Docker，將 `docker compose` 替換為 `docker-compose`。
-
-### 查看狀態
-
-```bash
-# 查看容器狀態
-docker compose ps
-
-# 查看實時日誌
-docker compose logs -f
-
-# 查看特定服務日誌
-docker compose exec tool_ocr tail -f /var/log/nginx/tool_ocr_access.log
-docker compose exec tool_ocr tail -f /app/backend/logs/app.log
-```
-
-### 重啟服務
-
-```bash
-# 重啟容器
-docker compose restart
-
-# 重啟 Nginx (容器內)
-docker compose exec tool_ocr supervisorctl restart nginx
-
-# 重啟 Backend (容器內)
-docker compose exec tool_ocr supervisorctl restart backend
-```
-
-### 停止和清理
-
-```bash
-# 停止服務
-docker compose stop
-
-# 停止並移除容器
-docker compose down
-
-# 完全清理（包括數據卷）⚠️ 慎用
-docker compose down -v
-```
-
-### 進入容器調試
-
-```bash
-# 進入容器 shell
-docker compose exec tool_ocr bash
-
-# 查看 Supervisor 狀態
-docker compose exec tool_ocr supervisorctl status
-
-# 查看進程
-docker compose exec tool_ocr ps aux
-```
-
-## 數據持久化
-
-以下目錄會持久化到主機的 `./data/` 目錄：
-
-| 容器內路徑 | 主機路徑 | 說明 |
-|-----------|---------|------|
-| `/app/backend/uploads` | `./data/uploads` | 上傳文件 |
-| `/app/backend/storage` | `./data/storage` | 處理結果 |
-| `/app/backend/models` | `./data/models` | OCR 模型 |
-| `/app/backend/logs` | `./data/logs` | 應用日誌 |
-
-### 備份數據
-
-Linux/Mac:
-```bash
-# 備份所有數據
-tar -czf tool_ocr_backup_$(date +%Y%m%d).tar.gz data/
-
-# 只備份重要數據
-tar -czf tool_ocr_data_$(date +%Y%m%d).tar.gz data/uploads data/storage
-```
-
-Windows (PowerShell):
-```powershell
-# 備份所有數據（需要安裝 7-Zip 或使用 Compress-Archive）
-$date = Get-Date -Format "yyyyMMdd"
-Compress-Archive -Path data -DestinationPath "tool_ocr_backup_$date.zip"
-
-# 只備份重要數據
-Compress-Archive -Path data/uploads, data/storage -DestinationPath "tool_ocr_data_$date.zip"
-```
-
-### 恢復數據
-
-Linux/Mac:
-```bash
-# 停止容器
-docker compose stop
-
-# 恢復數據
-tar -xzf tool_ocr_backup_20250113.tar.gz
-
-# 啟動容器
-docker compose up -d
-```
-
-Windows (PowerShell):
-```powershell
-# 停止容器
-docker compose stop
-
-# 恢復數據
-Expand-Archive -Path tool_ocr_backup_20250113.zip -DestinationPath . -Force
-
-# 啟動容器
-docker compose up -d
-```
-
-## 1Panel 部署指南
-
-### 1. 準備項目文件
-
-在 1Panel 的應用目錄中創建項目：
-
-```bash
-cd /opt/1panel/apps
-mkdir -p tool_ocr
-cd tool_ocr
-
-# 上傳項目文件
-# - Dockerfile
-# - docker-compose.yml
-# - docker/ 目錄
-# - backend/ 目錄
-# - frontend/ 目錄
-# - requirements.txt
-# - .env
-```
-
-### 2. 在 1Panel 中創建應用
-
-1. 登入 1Panel 管理面板
-2. 進入「應用商店」→「自定義應用」
-3. 選擇「Docker Compose」
-4. 上傳或粘貼 `docker-compose.yml` 內容
-5. 配置環境變量
-6. 點擊「創建」
-
-### 3. 配置反向代理（可選）
-
-如果需要通過域名訪問：
-
-1. 在 1Panel 中創建網站
-2. 配置反向代理：
-   - 目標地址: `http://127.0.0.1:12010`
-   - 啟用 WebSocket 支援（如需要）
-
-### 4. 配置 SSL 證書（可選）
-
-1. 在 1Panel 網站設置中
-2. 申請或上傳 SSL 證書
-3. 啟用 HTTPS
-
-## 更新部署
-
-### 更新代碼
-
-```bash
-# 停止容器
-docker compose stop
-
-# 拉取最新代碼
-git pull
-
-# 重新構建映像
-docker compose build --no-cache
-
-# 啟動容器
-docker compose up -d
-
-# 查看日誌確認啟動成功
-docker compose logs -f
-```
-
-### 數據庫遷移
-
-如果有數據庫結構變更：
-
-```bash
-# 進入容器
-docker compose exec tool_ocr bash
-
-# 運行遷移
-cd /app/backend
-alembic upgrade head
-
-# 退出容器
-exit
-```
-
-## 故障排除
-
-### 1. 容器無法啟動
-
-```bash
-# 查看詳細錯誤
-docker compose logs
-```
-
-檢查端口占用：
-
-Linux/Mac:
-```bash
-netstat -tuln | grep 12010
-# 或
-lsof -i :12010
-```
-
-Windows (PowerShell):
-```powershell
-netstat -ano | findstr 12010
-# 或
-Get-NetTCPConnection -LocalPort 12010
-```
-
-檢查磁碟空間：
-
-Linux/Mac:
-```bash
-df -h
-```
-
-Windows (PowerShell):
-```powershell
-Get-PSDrive
-```
-
-### 2. Nginx 無法啟動
-
-```bash
-# 檢查 Nginx 配置語法
-docker compose exec tool_ocr nginx -t
-
-# 查看 Nginx 錯誤日誌
-docker compose exec tool_ocr cat /var/log/nginx/error.log
-```
-
-### 3. Backend API 無法訪問
-
-```bash
-# 檢查 Backend 是否運行
-docker compose exec tool_ocr supervisorctl status backend
-
-# 查看 Backend 日誌
-docker compose exec tool_ocr cat /app/backend/logs/app.log
-
-# 重啟 Backend
-docker compose exec tool_ocr supervisorctl restart backend
-```
-
-### 4. 數據庫連接失敗
-
-```bash
-# 測試數據庫連接
-docker compose exec tool_ocr python -c "
-from app.core.database import engine
-try:
-    with engine.connect() as conn:
-        print('Database connection successful!')
-except Exception as e:
-    print(f'Database connection failed: {e}')
-"
-```
-
-### 5. OCR 處理失敗
-
-```bash
-# 檢查 PaddleOCR 模型
-docker compose exec tool_ocr ls -la /app/backend/models/paddleocr/
-
-# 測試 OCR 功能
-docker compose exec tool_ocr python -c "
-from paddleocr import PaddleOCR
-ocr = PaddleOCR(lang='ch')
-print('PaddleOCR initialized successfully!')
-"
-```
-
-### 6. 前端頁面無法訪問
-
-```bash
-# 檢查前端文件是否存在
-docker compose exec tool_ocr ls -la /app/frontend/dist/
-
-# 檢查 Nginx 配置
-docker compose exec tool_ocr cat /etc/nginx/conf.d/default.conf
-```
-
-## 性能優化
-
-### 1. 調整 OCR 工作進程數
-
-根據 CPU 核心數調整：
-
-```bash
-# 在 .env 中設置
-MAX_OCR_WORKERS=8  # 建議設置為 CPU 核心數
-```
-
-### 2. 調整 Nginx Worker 進程數
-
-編輯 `docker/nginx.conf`：
-
-```nginx
-worker_processes auto;  # 自動根據 CPU 核心數
-```
-
-### 3. 優化 Upload 大小限制
-
-根據實際需求調整：
-
-```bash
-# 在 .env 中設置（以字節為單位）
-MAX_UPLOAD_SIZE=104857600  # 100MB
-```
-
-同時修改 `docker/nginx.conf`：
-
-```nginx
-client_max_body_size 100M;
-```
-
-## 監控和日誌
-
-### 日誌位置
-
-| 服務 | 容器內路徑 | 主機路徑 |
-|------|-----------|---------|
-| Nginx Access | `/var/log/nginx/tool_ocr_access.log` | - |
-| Nginx Error | `/var/log/nginx/tool_ocr_error.log` | - |
-| Backend | `/app/backend/logs/app.log` | `./data/logs/app.log` |
-| Supervisor | `/var/log/supervisor/supervisord.log` | - |
-
-### 日誌輪轉
-
-建議配置日誌輪轉以防止日誌文件過大：
-
-```bash
-# 創建 logrotate 配置（主機上）
-cat > /etc/logrotate.d/tool_ocr << 'EOF'
-/path/to/tool_ocr/data/logs/*.log {
-    daily
-    rotate 7
-    compress
-    delaycompress
-    notifempty
-    create 0644 root root
-}
-EOF
-```
-
-## 安全建議
-
-1. **修改默認密鑰**: 務必修改 `.env` 中的 `SECRET_KEY`
-2. **使用 HTTPS**: 在生產環境中啟用 SSL/TLS
-3. **限制 CORS**: 只允許可信的來源
-4. **定期更新**: 及時更新 Docker 映像和依賴
-5. **備份數據**: 定期備份重要數據
-6. **監控日誌**: 定期檢查日誌中的異常活動
-
-## 常見問題
-
-### Q: 如何修改對外端口？
-
-A: 修改 `.env` 中的 `FRONTEND_PORT` 和 `docker-compose.yml` 中的端口映射。
-
-### Q: 如何增加上傳文件大小限制？
-
-A: 修改 `.env` 中的 `MAX_UPLOAD_SIZE` 和 `docker/nginx.conf` 中的 `client_max_body_size`。
-
-### Q: 如何連接外部 MySQL 數據庫？
-
-A: 在 `.env` 中配置正確的數據庫連接信息。
-
-### Q: 如何查看詳細的錯誤信息？
-
-A: 設置 `.env` 中的 `LOG_LEVEL=DEBUG` 並重啟容器。
-
-## 聯繫支援
-
-如果遇到問題，請：
-
-1. 查看日誌: `docker-compose logs -f`
-2. 檢查配置: 確認 `.env` 文件正確
-3. 查看文檔: 參考本文檔的故障排除部分
-4. 提交 Issue: 在項目倉庫提交問題報告
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index cdb1132..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,131 +0,0 @@
-# ============================================
-# Tool_OCR - Unified Docker Image
-# Frontend (React + Vite) + Backend (FastAPI)
-# Served by Nginx with reverse proxy
-# ============================================
-
-# ============================================
-# Stage 1: Build Frontend
-# ============================================
-FROM node:20-alpine AS frontend-builder
-
-WORKDIR /app/frontend
-
-# Copy package files
-COPY frontend/package*.json ./
-
-# Install all dependencies (including devDependencies for build)
-RUN npm ci
-
-# Copy frontend source
-COPY frontend/ ./
-
-# Create production environment file
-RUN echo "VITE_API_BASE_URL=" > .env.production
-
-# Build frontend for production
-RUN npm run build
-
-
-# ============================================
-# Stage 2: Build Backend + Final Image
-# ============================================
-FROM python:3.10-slim-bookworm
-
-# Set working directory
-WORKDIR /app
-
-# Set environment variables
-ENV PYTHONUNBUFFERED=1 \
-    PYTHONDONTWRITEBYTECODE=1 \
-    PIP_NO_CACHE_DIR=1 \
-    PIP_DISABLE_PIP_VERSION_CHECK=1 \
-    DEBIAN_FRONTEND=noninteractive
-
-# Install system dependencies
-# - nginx: web server and reverse proxy
-# - supervisor: process manager for nginx + uvicorn
-# - curl: for health checks
-# - pandoc: for markdown to PDF conversion
-# - poppler-utils: for pdf2image (PDF processing)
-# - libpango-1.0-0, libpangocairo-1.0-0: for WeasyPrint
-# - libgdk-pixbuf2.0-0: for WeasyPrint image handling
-# - libffi-dev: for cryptography
-# - fonts-noto-cjk: Chinese/Japanese/Korean font support
-# - libgomp1, libgl1-mesa-glx, libglib2.0-0: for OpenCV and PaddleOCR
-# - libmagic1: for python-magic file type detection
-# - libreoffice-writer, libreoffice-impress: for Office document conversion (doc/docx/ppt/pptx)
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    nginx \
-    supervisor \
-    curl \
-    pandoc \
-    poppler-utils \
-    libpango-1.0-0 \
-    libpangocairo-1.0-0 \
-    libgdk-pixbuf2.0-0 \
-    libffi-dev \
-    fonts-noto-cjk \
-    fonts-noto-cjk-extra \
-    libgomp1 \
-    libgl1-mesa-glx \
-    libglib2.0-0 \
-    libmagic1 \
-    libreoffice-writer \
-    libreoffice-impress \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy Python requirements
-COPY requirements.txt .
-
-# Install Python dependencies with extended timeout
-# PaddlePaddle is 189MB and may take time to download
-# Timeout: 600 seconds (10 minutes), Retries: 5
-RUN pip install --timeout 600 --retries 5 -r requirements.txt
-
-# Copy backend application
-COPY backend/ ./backend/
-
-# Copy frontend build from frontend-builder stage
-COPY --from=frontend-builder /app/frontend/dist /app/frontend/dist
-
-# Copy Nginx configuration
-COPY docker/nginx.conf /etc/nginx/nginx.conf
-COPY docker/default.conf /etc/nginx/conf.d/default.conf
-
-# Copy supervisor configuration
-COPY docker/supervisord.conf /etc/supervisor/conf.d/supervisord.conf
-
-# Copy startup script and fix line endings (Windows CRLF -> Linux LF)
-COPY docker/entrypoint.sh /entrypoint.sh
-RUN sed -i 's/\r$//' /entrypoint.sh && chmod +x /entrypoint.sh
-
-# Create necessary directories with proper permissions
-RUN mkdir -p \
-    /app/backend/uploads/temp \
-    /app/backend/uploads/processed \
-    /app/backend/uploads/images \
-    /app/backend/storage/markdown \
-    /app/backend/storage/json \
-    /app/backend/storage/exports \
-    /app/backend/models/paddleocr \
-    /app/backend/logs \
-    /var/log/supervisor \
-    /var/log/nginx \
-    /var/cache/nginx \
-    /var/run \
-    && chmod -R 755 /app \
-    && chown -R www-data:www-data /var/log/nginx /var/cache/nginx
-
-# Expose port (only one port needed!)
-EXPOSE 12015
-
-# Health check
-HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
-    CMD curl -f http://localhost:12015/health || exit 1
-
-# Set working directory to backend for Python app
-WORKDIR /app/backend
-
-# Use entrypoint script to start supervisor
-ENTRYPOINT ["/entrypoint.sh"]
diff --git a/README.md b/README.md
index 37c42b7..0b84ec4 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ A web-based solution to extract text, images, and document structure from multip
 - 🖼️ **Image Extraction**: Preserve document images alongside text content
 - 📑 **Batch Processing**: Process multiple files concurrently with progress tracking
 - 📤 **Multiple Export Formats**: TXT, JSON, Excel, Markdown with images, searchable PDF
+- 📋 **Office Documents**: DOC, DOCX, PPT, PPTX support via LibreOffice conversion
 - 🔧 **Flexible Configuration**: Rule-based output formatting
 - 🌐 **Translation Ready**: Reserved architecture for future translation features
 
@@ -22,173 +23,176 @@ A web-based solution to extract text, images, and document structure from multip
 - **Database**: MySQL via SQLAlchemy
 - **PDF Generation**: Pandoc + WeasyPrint
 - **Image Processing**: OpenCV, Pillow, pdf2image
+- **Office Conversion**: LibreOffice (headless mode)
 
 ### Frontend
-- **Framework**: React 18 with Vite
-- **Styling**: TailwindCSS + shadcn/ui
-- **HTTP Client**: Axios with React Query
+- **Framework**: React 19 with TypeScript
+- **Build Tool**: Vite 7
+- **Styling**: Tailwind CSS v4 + shadcn/ui
+- **State Management**: React Query + Zustand
+- **HTTP Client**: Axios
 
 ## Prerequisites
 
-- **macOS**: Apple Silicon (M1/M2/M3) or Intel
-- **Python**: 3.10+
-- **Conda**: Miniconda or Anaconda (will be installed automatically)
-- **Homebrew**: For system dependencies
+- **OS**: WSL2 Ubuntu 24.04
+- **Python**: 3.12+
+- **Node.js**: 24.x LTS
 - **MySQL**: External database server (provided)
 
-## Installation
+## Quick Start
 
 ### 1. Automated Setup (Recommended)
 
 ```bash
-# Clone the repository
-cd /Users/egg/Projects/Tool_OCR
-
 # Run automated setup script
-chmod +x setup_conda.sh
-./setup_conda.sh
-
-# If Conda was just installed, reload your shell
-source ~/.zshrc  # or source ~/.bash_profile
-
-# Run the script again to create environment
-./setup_conda.sh
+./setup_dev_env.sh
 ```
 
-### 2. Install Dependencies
+This script automatically installs:
+- Python development tools (pip, venv, build-essential)
+- System dependencies (pandoc, LibreOffice, fonts, etc.)
+- Node.js (via nvm)
+- Python packages
+- Frontend dependencies
+
+### 2. Initialize Database
 
 ```bash
-# Activate Conda environment
-conda activate tool_ocr
-
-# Install Python dependencies
-pip install -r requirements.txt
-
-# Install system dependencies (Pandoc for PDF generation)
-brew install pandoc
-
-# Install Chinese fonts for PDF generation (optional)
-brew install --cask font-noto-sans-cjk
-# Note: macOS built-in fonts work fine, this is optional
-```
-
-### 3. Download PaddleOCR Models
-
-```bash
-# Create models directory
-mkdir -p models/paddleocr
-
-# Models will be automatically downloaded on first run
-# (~900MB total, includes PaddleOCR-VL 0.9B model)
-```
-
-### 4. Configure Environment
-
-```bash
-# Copy environment template
-cp .env.example .env
-
-# Edit .env with your settings
-# Database credentials are pre-configured
-nano .env
-```
-
-### 5. Initialize Database
-
-```bash
-# Database schema will be created automatically on first run
-# Using: mysql.theaken.com:33306/db_A060
-```
-
-## Usage
-
-### Start Backend Server
-
-```bash
-# Activate environment
-conda activate tool_ocr
-
-# Start FastAPI server
+source venv/bin/activate
 cd backend
-python -m app.main
-
-# Server runs at: http://localhost:12010
-# API docs: http://localhost:12010/docs
+alembic upgrade head
+python create_test_user.py
+cd ..
 ```
 
-### Start Frontend (Coming Soon)
+Default test user:
+- Username: `admin`
+- Password: `admin123`
 
+### 3. Start Development Servers
+
+**Backend (Terminal 1):**
 ```bash
-# Install frontend dependencies
-cd frontend
-npm install
-
-# Start development server
-npm run dev
-
-# Frontend runs at: http://localhost:12011
+./start_backend.sh
 ```
 
+**Frontend (Terminal 2):**
+```bash
+./start_frontend.sh
+```
+
+### 4. Access Application
+
+- **Frontend**: http://localhost:5173
+- **API Docs**: http://localhost:8000/docs
+- **Health Check**: http://localhost:8000/health
+
 ## Project Structure
 
 ```
 Tool_OCR/
-├── backend/
+├── backend/                 # FastAPI backend
 │   ├── app/
-│   │   ├── api/v1/          # API endpoints
-│   │   ├── core/            # Configuration, database
-│   │   ├── models/          # Database models
-│   │   ├── services/        # Business logic
-│   │   ├── utils/           # Utilities
-│   │   └── main.py          # Application entry point
-│   └── tests/               # Test suite
-├── frontend/
-│   └── src/                 # React application
-├── uploads/
-│   ├── temp/                # Temporary uploads
-│   ├── processed/           # Processed files
-│   └── images/              # Extracted images
-├── storage/
-│   ├── markdown/            # Markdown outputs
-│   ├── json/                # JSON results
-│   └── exports/             # Export files
-├── models/
-│   └── paddleocr/           # PaddleOCR models
-├── config/                  # Configuration files
-├── templates/               # PDF templates
-├── logs/                    # Application logs
-├── requirements.txt         # Python dependencies
-├── setup_conda.sh           # Environment setup script
-├── .env.example             # Environment template
-└── README.md
+│   │   ├── api/v1/         # API endpoints
+│   │   ├── core/           # Configuration, database
+│   │   ├── models/         # Database models
+│   │   ├── services/       # Business logic
+│   │   └── main.py         # Application entry point
+│   ├── alembic/            # Database migrations
+│   └── tests/              # Test suite
+├── frontend/               # React frontend
+│   ├── src/
+│   │   ├── components/     # UI components
+│   │   ├── pages/          # Page components
+│   │   ├── services/       # API services
+│   │   └── stores/         # State management
+│   └── public/             # Static assets
+├── .env.local              # Local development config
+├── setup_dev_env.sh        # Environment setup script
+├── start_backend.sh        # Backend startup script
+└── start_frontend.sh       # Frontend startup script
 ```
 
-## API Endpoints (Planned)
+## Configuration
 
-- `POST /api/v1/ocr/upload` - Upload files for OCR processing
-- `GET /api/v1/ocr/tasks` - List all OCR tasks
-- `GET /api/v1/ocr/tasks/{task_id}` - Get task details
-- `POST /api/v1/ocr/batch` - Create batch processing task
-- `GET /api/v1/export/{task_id}` - Export results (TXT/JSON/Excel/MD/PDF)
-- `POST /api/v1/translate/document` - Translate document (reserved, returns 501)
+Main config file: `.env.local`
+
+```bash
+# Database
+MYSQL_HOST=mysql.theaken.com
+MYSQL_PORT=33306
+
+# Application ports
+BACKEND_PORT=8000
+FRONTEND_PORT=5173
+
+# Token expiration (minutes)
+ACCESS_TOKEN_EXPIRE_MINUTES=1440  # 24 hours
+
+# Supported file formats
+ALLOWED_EXTENSIONS=png,jpg,jpeg,pdf,bmp,tiff,doc,docx,ppt,pptx
+
+# OCR settings
+OCR_LANGUAGES=ch,en,japan,korean
+MAX_OCR_WORKERS=4
+```
+
+## API Endpoints
+
+### Authentication
+- `POST /api/v1/auth/login` - User login
+
+### File Management
+- `POST /api/v1/upload` - Upload files
+- `POST /api/v1/ocr/process` - Start OCR processing
+- `GET /api/v1/batch/{id}/status` - Get batch status
+
+### Results & Export
+- `GET /api/v1/ocr/result/{id}` - Get OCR result
+- `GET /api/v1/export/pdf/{id}` - Export as PDF
+
+Full API documentation: http://localhost:8000/docs
+
+## Supported File Formats
+
+- **Images**: PNG, JPG, JPEG, BMP, TIFF
+- **Documents**: PDF
+- **Office**: DOC, DOCX, PPT, PPTX
+
+Office files are automatically converted to PDF before OCR processing.
 
 ## Development
 
-### Run Tests
+### Backend
 
 ```bash
+source venv/bin/activate
 cd backend
-pytest tests/ -v --cov=app
+
+# Run tests
+pytest
+
+# Database migration
+alembic revision --autogenerate -m "description"
+alembic upgrade head
+
+# Code formatting
+black app/
 ```
 
-### Code Quality
+### Frontend
 
 ```bash
-# Format code
-black app/
+cd frontend
+
+# Development server
+npm run dev
+
+# Build for production
+npm run build
 
 # Lint code
-pylint app/
+npm run lint
 ```
 
 ## OpenSpec Workflow
@@ -208,26 +212,26 @@ cat openspec/changes/add-ocr-batch-processing/tasks.md
 
 ## Roadmap
 
-- [x] **Phase 0**: Environment setup and configuration
-- [ ] **Phase 1**: Core OCR with structure extraction
-- [ ] **Phase 2**: Frontend development
+- [x] **Phase 0**: Environment setup
+- [x] **Phase 1**: Core OCR backend (~98% complete)
+- [x] **Phase 2**: Frontend development (~92% complete)
 - [ ] **Phase 3**: Testing & optimization
-- [ ] **Phase 4**: Deployment
+- [ ] **Phase 4**: Deployment automation
 - [ ] **Phase 5**: Translation feature (future)
 
+## Documentation
+
+- Development specs: [openspec/project.md](openspec/project.md)
+- Implementation status: [openspec/changes/add-ocr-batch-processing/STATUS.md](openspec/changes/add-ocr-batch-processing/STATUS.md)
+- Agent instructions: [openspec/AGENTS.md](openspec/AGENTS.md)
+
 ## License
 
-[To be determined]
+Internal project use
 
-## Contributors
+## Notes
 
-- Development environment: macOS Apple Silicon
-- Database: MySQL external server
-- OCR Engine: PaddleOCR-VL 0.9B with PP-StructureV3
-
-## Support
-
-For issues and questions, refer to:
-- OpenSpec documentation: `openspec/AGENTS.md`
-- Task breakdown: `openspec/changes/add-ocr-batch-processing/tasks.md`
-- Specifications: `openspec/changes/add-ocr-batch-processing/specs/`
+- First OCR run will download PaddleOCR models (~900MB)
+- Token expiration is set to 24 hours by default
+- Office conversion requires LibreOffice (installed via setup script)
+- Development environment: WSL2 Ubuntu 24.04 with Python venv
diff --git a/SETUP.md b/SETUP.md
deleted file mode 100644
index 25b204c..0000000
--- a/SETUP.md
+++ /dev/null
@@ -1,395 +0,0 @@
-# Tool_OCR Setup Guide
-
-Complete setup instructions for macOS environment.
-
-## Prerequisites Check
-
-Before starting, verify you have:
-- ✅ macOS (Apple Silicon or Intel)
-- ✅ Terminal access (zsh or bash)
-- ✅ Internet connection for downloads
-
-## Step-by-Step Setup
-
-### Step 1: Install Conda Environment
-
-Run the automated setup script:
-
-```bash
-chmod +x setup_conda.sh
-./setup_conda.sh
-```
-
-**Expected output:**
-- If Conda not installed: Downloads and installs Miniconda for Apple Silicon
-- If Conda already installed: Creates `tool_ocr` environment with Python 3.10
-
-**If Conda was just installed:**
-```bash
-# Reload your shell to activate Conda
-source ~/.zshrc       # if using zsh (default on macOS)
-source ~/.bashrc      # if using bash
-
-# Run setup script again to create environment
-./setup_conda.sh
-```
-
-### Step 2: Activate Environment
-
-```bash
-conda activate tool_ocr
-```
-
-You should see `(tool_ocr)` prefix in your terminal prompt.
-
-### Step 3: Install Python Dependencies
-
-```bash
-pip install -r requirements.txt
-```
-
-**This will install:**
-- FastAPI and Uvicorn (web framework)
-- PaddleOCR and PaddlePaddle (OCR engine)
-- Image processing libraries (Pillow, OpenCV, pdf2image)
-- PDF generation tools (WeasyPrint, Markdown)
-- Database tools (SQLAlchemy, PyMySQL, Alembic)
-- Authentication libraries (python-jose, passlib)
-- Testing tools (pytest, pytest-asyncio)
-
-**Installation time:** ~5-10 minutes depending on your internet speed
-
-### Step 4: Install System Dependencies
-
-```bash
-# Install libmagic (required for python-magic file type detection)
-brew install libmagic
-
-# Install WeasyPrint dependencies (required for PDF generation)
-brew install pango gdk-pixbuf libffi
-
-# Install Pandoc (optional - for enhanced PDF generation)
-brew install pandoc
-
-# Install Chinese fonts for PDF output (optional - macOS has built-in Chinese fonts)
-brew install --cask font-noto-sans-cjk
-# Note: If above fails, skip it - macOS built-in fonts (PingFang SC, Heiti TC) work fine
-```
-
-**If Homebrew not installed:**
-```bash
-/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
-```
-
-### Step 5: Configure Environment Variables
-
-```bash
-# Copy template
-cp .env.example .env
-
-# Edit with your preferred editor
-nano .env
-# or
-code .env
-```
-
-**Important settings to verify in `.env`:**
-
-```bash
-# Database (pre-configured, should work as-is)
-MYSQL_HOST=mysql.theaken.com
-MYSQL_PORT=33306
-MYSQL_USER=A060
-MYSQL_PASSWORD=WLeSCi0yhtc7
-MYSQL_DATABASE=db_A060
-
-# Application ports
-BACKEND_PORT=12010
-FRONTEND_PORT=12011
-
-# Security (CHANGE THIS!)
-SECRET_KEY=your-secret-key-here-please-change-this-to-random-string
-```
-
-**Generate a secure SECRET_KEY:**
-```bash
-python -c "import secrets; print(secrets.token_urlsafe(32))"
-```
-
-Copy the output and paste it as your `SECRET_KEY` value.
-
-### Step 6: Set Environment Variable for WeasyPrint
-
-Add to your shell config (`~/.zshrc` or `~/.bash_profile`):
-
-```bash
-export DYLD_LIBRARY_PATH="/opt/homebrew/lib:$DYLD_LIBRARY_PATH"
-```
-
-Then reload:
-```bash
-source ~/.zshrc  # or source ~/.bash_profile
-```
-
-### Step 7: Run Service Layer Tests
-
-Verify all services are working:
-
-```bash
-cd backend
-python test_services.py
-```
-
-Expected output:
-```
-✓ PASS   - database
-✓ PASS   - preprocessor
-✓ PASS   - pdf_generator
-✓ PASS   - file_manager
-Total: 4-5/5 tests passed
-```
-
-**Note:** OCR engine test may fail on first run as PaddleOCR downloads models (~900MB). This is normal.
-
-### Step 8: Create Directory Structure
-
-The directories should already exist, but verify:
-
-```bash
-ls -la
-```
-
-You should see:
-- `backend/` - FastAPI application
-- `frontend/` - React application (will be populated later)
-- `uploads/` - File upload storage
-- `storage/` - Processed results
-- `models/` - PaddleOCR models (empty until first run)
-- `logs/` - Application logs
-
-### Step 8: Start Backend Server
-
-```bash
-cd backend
-python -m app.main
-```
-
-**Expected output:**
-```
-INFO:     Started server process
-INFO:     Waiting for application startup.
-INFO:     Application startup complete.
-INFO:     Uvicorn running on http://0.0.0.0:12010
-```
-
-**Test the server:**
-Open browser and visit:
-- http://localhost:12010 - API root
-- http://localhost:12010/docs - Interactive API documentation
-- http://localhost:12010/health - Health check endpoint
-
-### Step 9: Download PaddleOCR Models
-
-On first OCR request, PaddleOCR will automatically download models (~900MB).
-
-**To pre-download models manually:**
-
-```bash
-python -c "
-from paddleocr import PaddleOCR
-ocr = PaddleOCR(use_angle_cls=True, lang='ch', use_gpu=False)
-print('Models downloaded successfully')
-"
-```
-
-This will download:
-- Detection model: ch_PP-OCRv4_det
-- Recognition model: ch_PP-OCRv4_rec
-- Angle classifier: ch_ppocr_mobile_v2.0_cls
-
-Models are stored in: `./models/paddleocr/`
-
-## Troubleshooting
-
-### Issue: "conda: command not found"
-
-**Solution:**
-```bash
-# Reload shell configuration
-source ~/.zshrc  # or source ~/.bashrc
-
-# If still not working, manually add Conda to PATH
-export PATH="$HOME/miniconda3/bin:$PATH"
-```
-
-### Issue: PaddlePaddle installation fails
-
-**Solution:**
-```bash
-# For Apple Silicon Macs, ensure you're using ARM version
-pip uninstall paddlepaddle
-pip install paddlepaddle --no-cache-dir
-```
-
-### Issue: WeasyPrint fails to install
-
-**Solution:**
-```bash
-# Install required system libraries
-brew install cairo pango gdk-pixbuf libffi
-pip install --upgrade weasyprint
-```
-
-### Issue: Database connection fails
-
-**Solution:**
-```bash
-# Test database connection
-python -c "
-import pymysql
-conn = pymysql.connect(
-    host='mysql.theaken.com',
-    port=33306,
-    user='A060',
-    password='WLeSCi0yhtc7',
-    database='db_A060'
-)
-print('Database connection OK')
-conn.close()
-"
-```
-
-If this fails, verify:
-- Internet connection is active
-- Firewall is not blocking port 33306
-- Database credentials in `.env` are correct
-
-### Issue: Port 12010 already in use
-
-**Solution:**
-```bash
-# Find what's using the port
-lsof -i :12010
-
-# Kill the process or change port in .env
-# Edit BACKEND_PORT=12011 (or any available port)
-```
-
-## Next Steps
-
-After successful setup:
-
-1. ✅ Environment is ready
-2. ✅ Backend server can start
-3. ✅ Database connection configured
-
-**Ready to develop:**
-- Implement database models (`backend/app/models/`)
-- Create API endpoints (`backend/app/api/v1/`)
-- Build OCR service (`backend/app/services/ocr_service.py`)
-- Develop frontend UI (`frontend/src/`)
-
-**Start with Phase 1 tasks:**
-Refer to [openspec/changes/add-ocr-batch-processing/tasks.md](openspec/changes/add-ocr-batch-processing/tasks.md) for detailed implementation tasks.
-
-## Development Workflow
-
-```bash
-# Activate environment
-conda activate tool_ocr
-
-# Start backend in development mode (auto-reload)
-cd backend
-python -m app.main
-
-bash -c "source ~/.zshrc && conda activate tool_ocr && export DYLD_LIBRARY_PATH=/opt/homebrew/lib:$DYLD_LIBRARY_PATH && python -m app.main"
-
-# In another terminal, start frontend
-cd frontend
-npm run dev
-
-# Run tests
-cd backend
-pytest tests/ -v
-
-# Check code style
-black app/
-pylint app/
-```
-
-## Background Services
-
-### Automatic Cleanup Scheduler
-
-The application automatically runs a cleanup scheduler that:
-- **Runs every**: 1 hour (configurable via `BackgroundTaskManager.cleanup_interval`)
-- **Deletes files older than**: 24 hours (configurable via `BackgroundTaskManager.file_retention_hours`)
-- **Cleans up**:
-  - Physical files and directories
-  - Database records (results, files, batches)
-  - Expired batches in COMPLETED, FAILED, or PARTIAL status
-
-The cleanup scheduler starts automatically when the backend application starts and stops gracefully on shutdown.
-
-**Monitor cleanup activity:**
-```bash
-# Watch cleanup logs in real-time
-tail -f /tmp/tool_ocr_startup.log | grep cleanup
-
-# Or check application logs
-tail -f backend/logs/app.log | grep cleanup
-```
-
-### Retry Logic
-
-OCR processing includes automatic retry logic:
-- **Maximum retries**: 3 attempts (configurable)
-- **Retry delay**: 5 seconds between attempts (configurable)
-- **Tracks**: `retry_count` field in database
-- **Error handling**: Detailed error messages with retry attempt information
-
-**Configuration** (in [backend/app/services/background_tasks.py](backend/app/services/background_tasks.py)):
-```python
-task_manager = BackgroundTaskManager(
-    max_retries=3,           # Number of retry attempts
-    retry_delay=5,            # Delay between retries (seconds)
-    cleanup_interval=3600,    # Cleanup runs every hour
-    file_retention_hours=24   # Keep files for 24 hours
-)
-```
-
-### Background Task Status
-
-Check if background services are running:
-```bash
-# Check health endpoint
-curl http://localhost:12010/health
-
-# Check application startup logs for cleanup scheduler
-grep "cleanup scheduler" /tmp/tool_ocr_startup.log
-# Expected output: "Started cleanup scheduler for expired files"
-# Expected output: "Starting cleanup scheduler (interval: 3600s, retention: 24h)"
-```
-
-## Deactivate Environment
-
-When done working:
-```bash
-conda deactivate
-```
-
-## Environment Management
-
-```bash
-# List Conda environments
-conda env list
-
-# Remove environment (if needed)
-conda env remove -n tool_ocr
-
-# Export environment
-conda env export > environment.yml
-
-# Create from exported environment
-conda env create -f environment.yml
-```
diff --git a/backend/app/core/database.py b/backend/app/core/database.py
index 46ad99f..9623a74 100644
--- a/backend/app/core/database.py
+++ b/backend/app/core/database.py
@@ -14,6 +14,13 @@ engine = create_engine(
     pool_pre_ping=True,  # Enable connection health checks
     pool_size=10,
     max_overflow=20,
+    pool_recycle=3600,  # Recycle connections every hour
+    pool_timeout=30,  # Connection timeout
+    connect_args={
+        'connect_timeout': 10,
+        'read_timeout': 30,
+        'write_timeout': 30,
+    },
     echo=False,  # Set to True for SQL query logging
 )
 
diff --git a/backend/app/services/background_tasks.py b/backend/app/services/background_tasks.py
index c83fac2..3d0ec65 100644
--- a/backend/app/services/background_tasks.py
+++ b/backend/app/services/background_tasks.py
@@ -168,24 +168,39 @@ class BackgroundTaskManager:
                 ocr_file.completed_at = datetime.utcnow()
                 ocr_file.processing_time = (ocr_file.completed_at - ocr_file.started_at).total_seconds()
 
-                db.commit()
+                # Commit with retry on connection errors
+                try:
+                    db.commit()
+                except Exception as commit_error:
+                    logger.warning(f"Commit failed, rolling back and retrying: {commit_error}")
+                    db.rollback()
+                    db.refresh(ocr_file)
+                    ocr_file.status = FileStatus.COMPLETED
+                    ocr_file.completed_at = datetime.utcnow()
+                    ocr_file.processing_time = (ocr_file.completed_at - ocr_file.started_at).total_seconds()
+                    db.commit()
 
                 logger.info(f"Successfully processed file {ocr_file.id} ({ocr_file.original_filename})")
                 return True
 
             except Exception as e:
                 logger.error(f"Attempt {attempt + 1}/{self.max_retries + 1} failed for file {ocr_file.id}: {e}")
+                db.rollback()  # Rollback failed transaction
 
                 if attempt < self.max_retries:
                     # Wait before retry
                     time.sleep(self.retry_delay)
                 else:
                     # Final failure
-                    ocr_file.status = FileStatus.FAILED
-                    ocr_file.error_message = f"Failed after {self.max_retries + 1} attempts: {str(e)}"
-                    ocr_file.completed_at = datetime.utcnow()
-                    ocr_file.retry_count = attempt
-                    db.commit()
+                    try:
+                        ocr_file.status = FileStatus.FAILED
+                        ocr_file.error_message = f"Failed after {self.max_retries + 1} attempts: {str(e)}"
+                        ocr_file.completed_at = datetime.utcnow()
+                        ocr_file.retry_count = attempt
+                        db.commit()
+                    except Exception as final_error:
+                        logger.error(f"Failed to update error status: {final_error}")
+                        db.rollback()
                     return False
 
         return False
@@ -375,7 +390,17 @@ def process_batch_files_with_retry(
             batch.status = BatchStatus.FAILED
 
         batch.completed_at = datetime.utcnow()
-        db.commit()
+
+        # Commit with retry on connection errors
+        try:
+            db.commit()
+        except Exception as commit_error:
+            logger.warning(f"Batch commit failed, rolling back and retrying: {commit_error}")
+            db.rollback()
+            batch = db.query(OCRBatch).filter(OCRBatch.id == batch_id).first()
+            if batch:
+                batch.completed_at = datetime.utcnow()
+                db.commit()
 
         logger.info(
             f"Batch {batch_id} processing complete: "
@@ -384,6 +409,7 @@ def process_batch_files_with_retry(
 
     except Exception as e:
         logger.error(f"Fatal error processing batch {batch_id}: {e}")
+        db.rollback()  # Rollback any failed transaction
         try:
             batch = db.query(OCRBatch).filter(OCRBatch.id == batch_id).first()
             if batch:
@@ -392,3 +418,4 @@ def process_batch_files_with_retry(
                 db.commit()
         except Exception as commit_error:
             logger.error(f"Error updating batch status: {commit_error}")
+            db.rollback()
diff --git a/backend/app/services/office_converter.py b/backend/app/services/office_converter.py
index 55274f9..1db9998 100644
--- a/backend/app/services/office_converter.py
+++ b/backend/app/services/office_converter.py
@@ -42,14 +42,16 @@ class OfficeConverter:
     def _verify_libreoffice(self):
         """Verify LibreOffice is installed and accessible"""
         if not Path(self.libreoffice_path).exists():
-            # Try alternative path for Homebrew installation
+            # Try alternative path (system-wide installation)
             alt_path = shutil.which("soffice")
             if alt_path:
                 self.libreoffice_path = alt_path
                 logger.info(f"Using LibreOffice at: {alt_path}")
             else:
                 raise OfficeConverterError(
-                    "LibreOffice not found. Please install LibreOffice: brew install libreoffice"
+                    "LibreOffice not found. Please install LibreOffice:\n"
+                    "  Ubuntu/Debian: sudo apt install -y libreoffice-writer libreoffice-impress libreoffice-core-nogui\n"
+                    "  macOS: brew install libreoffice"
                 )
 
     def is_office_document(self, file_path: Path) -> bool:
diff --git a/docker-compose.yml b/docker-compose.yml
deleted file mode 100644
index 936b8a5..0000000
--- a/docker-compose.yml
+++ /dev/null
@@ -1,97 +0,0 @@
-services:
-  tool_ocr:
-    build:
-      context: .
-      dockerfile: Dockerfile
-    image: tool_ocr:latest
-    container_name: tool_ocr
-    restart: unless-stopped
-
-    ports:
-      - "12015:12015"  # Only one port needed!
-
-    environment:
-      # Database Configuration
-      - MYSQL_HOST=${MYSQL_HOST:-mysql.theaken.com}
-      - MYSQL_PORT=${MYSQL_PORT:-33306}
-      - MYSQL_USER=${MYSQL_USER:-A060}
-      - MYSQL_PASSWORD=${MYSQL_PASSWORD:-WLeSCi0yhtc7}
-      - MYSQL_DATABASE=${MYSQL_DATABASE:-db_A060}
-
-      # Application Configuration
-      - BACKEND_PORT=8000  # Internal backend port
-      - FRONTEND_PORT=12015  # External port
-      - SECRET_KEY=${SECRET_KEY:-your-secret-key-here-please-change-this}
-      - ALGORITHM=${ALGORITHM:-HS256}
-      - ACCESS_TOKEN_EXPIRE_MINUTES=${ACCESS_TOKEN_EXPIRE_MINUTES:-1440}
-
-      # OCR Configuration
-      - PADDLEOCR_MODEL_DIR=/app/backend/models/paddleocr
-      - OCR_LANGUAGES=${OCR_LANGUAGES:-ch,en,japan,korean}
-      - OCR_CONFIDENCE_THRESHOLD=${OCR_CONFIDENCE_THRESHOLD:-0.5}
-      - MAX_OCR_WORKERS=${MAX_OCR_WORKERS:-4}
-
-      # File Upload Configuration
-      - MAX_UPLOAD_SIZE=${MAX_UPLOAD_SIZE:-52428800}
-      - ALLOWED_EXTENSIONS=${ALLOWED_EXTENSIONS:-png,jpg,jpeg,pdf,bmp,tiff,doc,docx,ppt,pptx}
-      - UPLOAD_DIR=/app/backend/uploads
-      - TEMP_DIR=/app/backend/uploads/temp
-      - PROCESSED_DIR=/app/backend/uploads/processed
-      - IMAGES_DIR=/app/backend/uploads/images
-
-      # Export Configuration
-      - STORAGE_DIR=/app/backend/storage
-      - MARKDOWN_DIR=/app/backend/storage/markdown
-      - JSON_DIR=/app/backend/storage/json
-      - EXPORTS_DIR=/app/backend/storage/exports
-
-      # PDF Generation Configuration
-      - PANDOC_PATH=/usr/bin/pandoc
-      - FONT_DIR=/usr/share/fonts
-      - PDF_PAGE_SIZE=${PDF_PAGE_SIZE:-A4}
-      - PDF_MARGIN_TOP=${PDF_MARGIN_TOP:-20}
-      - PDF_MARGIN_BOTTOM=${PDF_MARGIN_BOTTOM:-20}
-      - PDF_MARGIN_LEFT=${PDF_MARGIN_LEFT:-20}
-      - PDF_MARGIN_RIGHT=${PDF_MARGIN_RIGHT:-20}
-
-      # Translation Configuration (Reserved)
-      - ENABLE_TRANSLATION=${ENABLE_TRANSLATION:-false}
-      - TRANSLATION_ENGINE=${TRANSLATION_ENGINE:-offline}
-      - ARGOSTRANSLATE_MODELS_DIR=/app/backend/models/argostranslate
-
-      # Background Tasks Configuration
-      - TASK_QUEUE_TYPE=${TASK_QUEUE_TYPE:-memory}
-
-      # CORS Configuration
-      - CORS_ORIGINS=${CORS_ORIGINS:-http://localhost:12015,http://127.0.0.1:12015}
-
-      # Logging Configuration
-      - LOG_LEVEL=${LOG_LEVEL:-INFO}
-      - LOG_FILE=/app/backend/logs/app.log
-
-    volumes:
-      # Persist data directories
-      - ./data/uploads:/app/backend/uploads
-      - ./data/storage:/app/backend/storage
-      - ./data/models:/app/backend/models
-      - ./data/logs:/app/backend/logs
-
-    networks:
-      - tool_ocr_network
-
-    healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:12010/health"]
-      interval: 30s
-      timeout: 10s
-      retries: 3
-      start_period: 40s
-
-networks:
-  tool_ocr_network:
-    driver: bridge
-
-volumes:
-  uploads:
-  storage:
-  models:
-  logs:
diff --git a/docker/default.conf b/docker/default.conf
deleted file mode 100644
index 597f92b..0000000
--- a/docker/default.conf
+++ /dev/null
@@ -1,89 +0,0 @@
-# Nginx Site Configuration for Tool_OCR
-
-upstream backend {
-    server 127.0.0.1:8000;
-    keepalive 32;
-}
-
-server {
-    listen 12015;
-    server_name _;
-
-    # Security headers
-    add_header X-Frame-Options "SAMEORIGIN" always;
-    add_header X-Content-Type-Options "nosniff" always;
-    add_header X-XSS-Protection "1; mode=block" always;
-
-    # Root directory for frontend
-    root /app/frontend/dist;
-    index index.html;
-
-    # Logging
-    access_log /var/log/nginx/tool_ocr_access.log;
-    error_log /var/log/nginx/tool_ocr_error.log;
-
-    # Backend API proxy
-    location /api/ {
-        proxy_pass http://backend/api/;
-        proxy_http_version 1.1;
-
-        # Headers
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_set_header Connection "";
-
-        # Timeouts
-        proxy_connect_timeout 60s;
-        proxy_send_timeout 300s;
-        proxy_read_timeout 300s;
-
-        # Buffering
-        proxy_buffering off;
-        proxy_request_buffering off;
-    }
-
-    # Health check endpoint (backend)
-    location /health {
-        proxy_pass http://backend/health;
-        proxy_http_version 1.1;
-        proxy_set_header Host $host;
-        proxy_set_header Connection "";
-    }
-
-    # API docs (backend)
-    location /docs {
-        proxy_pass http://backend/docs;
-        proxy_http_version 1.1;
-        proxy_set_header Host $host;
-        proxy_set_header Connection "";
-    }
-
-    location /openapi.json {
-        proxy_pass http://backend/openapi.json;
-        proxy_http_version 1.1;
-        proxy_set_header Host $host;
-        proxy_set_header Connection "";
-    }
-
-    # Frontend static files with caching
-    location /assets/ {
-        expires 1y;
-        add_header Cache-Control "public, immutable";
-    }
-
-    # Frontend - React Router support (SPA fallback)
-    location / {
-        try_files $uri $uri/ /index.html;
-        expires -1;
-        add_header Cache-Control "no-store, no-cache, must-revalidate";
-    }
-
-    # Deny access to hidden files
-    location ~ /\. {
-        deny all;
-        access_log off;
-        log_not_found off;
-    }
-}
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
deleted file mode 100644
index 64bdc1c..0000000
--- a/docker/entrypoint.sh
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/bash
-set -e
-
-echo "========================================"
-echo "Tool_OCR Container Starting..."
-echo "========================================"
-
-# Wait a moment for system to stabilize
-sleep 2
-
-# Run database migrations if needed
-echo "Checking database migrations..."
-cd /app/backend
-if [ -f "alembic.ini" ]; then
-    echo "Running Alembic migrations..."
-    alembic upgrade head || echo "Warning: Migration failed or already up to date"
-fi
-
-# Create necessary directories if they don't exist
-echo "Ensuring directories exist..."
-mkdir -p \
-    /app/backend/uploads/temp \
-    /app/backend/uploads/processed \
-    /app/backend/uploads/images \
-    /app/backend/storage/markdown \
-    /app/backend/storage/json \
-    /app/backend/storage/exports \
-    /app/backend/models/paddleocr \
-    /app/backend/logs
-
-# Set permissions
-chmod -R 755 /app/backend/uploads /app/backend/storage /app/backend/logs
-
-echo "========================================"
-echo "Starting services with Supervisor..."
-echo "- Nginx listening on port 12015"
-echo "- Backend API on internal port 8000"
-echo "========================================"
-
-# Start supervisord
-exec /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf
diff --git a/docker/nginx.conf b/docker/nginx.conf
deleted file mode 100644
index 3c2e25a..0000000
--- a/docker/nginx.conf
+++ /dev/null
@@ -1,40 +0,0 @@
-# Nginx Main Configuration
-user www-data;
-worker_processes auto;
-pid /var/run/nginx.pid;
-
-events {
-    worker_connections 1024;
-    use epoll;
-}
-
-http {
-    # Basic Settings
-    sendfile on;
-    tcp_nopush on;
-    tcp_nodelay on;
-    keepalive_timeout 65;
-    types_hash_max_size 2048;
-    client_max_body_size 50M;  # Match MAX_UPLOAD_SIZE in .env
-
-    # MIME Types
-    include /etc/nginx/mime.types;
-    default_type application/octet-stream;
-
-    # Logging
-    access_log /var/log/nginx/access.log;
-    error_log /var/log/nginx/error.log;
-
-    # Gzip Compression
-    gzip on;
-    gzip_vary on;
-    gzip_proxied any;
-    gzip_comp_level 6;
-    gzip_types text/plain text/css text/xml text/javascript
-               application/json application/javascript application/xml+rss
-               application/rss+xml font/truetype font/opentype
-               application/vnd.ms-fontobject image/svg+xml;
-
-    # Include site configurations
-    include /etc/nginx/conf.d/*.conf;
-}
diff --git a/docker/supervisord.conf b/docker/supervisord.conf
deleted file mode 100644
index 162dba6..0000000
--- a/docker/supervisord.conf
+++ /dev/null
@@ -1,28 +0,0 @@
-[supervisord]
-nodaemon=true
-user=root
-logfile=/var/log/supervisor/supervisord.log
-pidfile=/var/run/supervisord.pid
-loglevel=info
-
-[program:nginx]
-command=/usr/sbin/nginx -g "daemon off;"
-autostart=true
-autorestart=true
-priority=10
-stdout_logfile=/dev/stdout
-stdout_logfile_maxbytes=0
-stderr_logfile=/dev/stderr
-stderr_logfile_maxbytes=0
-
-[program:backend]
-command=python -m uvicorn app.main:app --host 127.0.0.1 --port 8000 --log-level info
-directory=/app/backend
-autostart=true
-autorestart=true
-priority=20
-stdout_logfile=/dev/stdout
-stdout_logfile_maxbytes=0
-stderr_logfile=/dev/stderr
-stderr_logfile_maxbytes=0
-environment=PYTHONUNBUFFERED="1"
diff --git a/frontend/.env b/frontend/.env
index e614546..c2058b5 100644
--- a/frontend/.env
+++ b/frontend/.env
@@ -1 +1 @@
-VITE_API_BASE_URL=http://localhost:12015
+VITE_API_BASE_URL=http://localhost:8000
diff --git a/frontend/.env.docker b/frontend/.env.docker
deleted file mode 100644
index f75b4f2..0000000
--- a/frontend/.env.docker
+++ /dev/null
@@ -1,7 +0,0 @@
-# Frontend Environment Variables for Docker Deployment
-# Copy this to frontend/.env.production for Docker builds
-
-# API Base URL
-# In Docker environment, use empty string for same-origin requests
-# Nginx will proxy /api/* to the backend
-VITE_API_BASE_URL=
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index b029a94..1fac87f 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -86,6 +86,7 @@
       "integrity": "sha512-e7jT4DxYvIDLk1ZHmU/m/mB19rex9sv0c2ftBtjSBv+kVM/902eh0fINUzD7UwLLNR+jU585GxUJ8/EBfAM5fw==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -1672,9 +1673,9 @@
       }
     },
     "node_modules/@tanstack/query-core": {
-      "version": "5.90.7",
-      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.90.7.tgz",
-      "integrity": "sha512-6PN65csiuTNfBMXqQUxQhCNdtm1rV+9kC9YwWAIKcaxAauq3Wu7p18j3gQY3YIBJU70jT/wzCCZ2uqto/vQgiQ==",
+      "version": "5.90.8",
+      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.90.8.tgz",
+      "integrity": "sha512-4E0RP/0GJCxSNiRF2kAqE/LQkTJVlL/QNU7gIJSptaseV9HP6kOuA+N11y4bZKZxa3QopK3ZuewwutHx6DqDXQ==",
       "license": "MIT",
       "funding": {
         "type": "github",
@@ -1682,12 +1683,12 @@
       }
     },
     "node_modules/@tanstack/react-query": {
-      "version": "5.90.7",
-      "resolved": "https://registry.npmjs.org/@tanstack/react-query/-/react-query-5.90.7.tgz",
-      "integrity": "sha512-wAHc/cgKzW7LZNFloThyHnV/AX9gTg3w5yAv0gvQHPZoCnepwqCMtzbuPbb2UvfvO32XZ46e8bPOYbfZhzVnnQ==",
+      "version": "5.90.8",
+      "resolved": "https://registry.npmjs.org/@tanstack/react-query/-/react-query-5.90.8.tgz",
+      "integrity": "sha512-/3b9QGzkf4rE5/miL6tyhldQRlLXzMHcySOm/2Tm2OLEFE9P1ImkH0+OviDBSvyAvtAOJocar5xhd7vxdLi3aQ==",
       "license": "MIT",
       "dependencies": {
-        "@tanstack/query-core": "5.90.7"
+        "@tanstack/query-core": "5.90.8"
       },
       "funding": {
         "type": "github",
@@ -1803,15 +1804,17 @@
       "integrity": "sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "undici-types": "~7.16.0"
       }
     },
     "node_modules/@types/react": {
-      "version": "19.2.3",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.3.tgz",
-      "integrity": "sha512-k5dJVszUiNr1DSe8Cs+knKR6IrqhqdhpUwzqhkS8ecQTSf3THNtbfIp/umqHMpX2bv+9dkx3fwDv/86LcSfvSg==",
+      "version": "19.2.4",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.4.tgz",
+      "integrity": "sha512-tBFxBp9Nfyy5rsmefN+WXc1JeW/j2BpBHFdLZbEVfs9wn3E3NRFxwV0pJg8M1qQAexFpvz73hJXFofV0ZAu92A==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "csstype": "^3.0.2"
       }
@@ -1878,6 +1881,7 @@
       "integrity": "sha512-tK3GPFWbirvNgsNKto+UmB/cRtn6TZfyw0D6IKrW55n6Vbs7KJoZtI//kpTKzE/DUmmnAFD8/Ca46s7Obs92/w==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.46.4",
         "@typescript-eslint/types": "8.46.4",
@@ -2136,6 +2140,7 @@
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -2275,9 +2280,9 @@
       "license": "MIT"
     },
     "node_modules/baseline-browser-mapping": {
-      "version": "2.8.26",
-      "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.26.tgz",
-      "integrity": "sha512-73lC1ugzwoaWCLJ1LvOgrR5xsMLTqSKIEoMHVtL9E/HNk0PXtTM76ZIm84856/SF7Nv8mPZxKoBsgpm0tR1u1Q==",
+      "version": "2.8.27",
+      "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.27.tgz",
+      "integrity": "sha512-2CXFpkjVnY2FT+B6GrSYxzYf65BJWEqz5tIRHCvNsZZ2F3CmsCB37h8SpYgKG7y9C4YAeTipIPWG7EmFmhAeXA==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
@@ -2328,6 +2333,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.8.25",
         "caniuse-lite": "^1.0.30001754",
@@ -2789,6 +2795,7 @@
       "integrity": "sha512-BhHmn2yNOFA9H9JmmIVKJmd288g9hrVRDkdoIgRCRuSySRUHH7r/DI6aAXW9T1WwUuY3DFgrcaqB+deURBLR5g==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -3413,6 +3420,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/runtime": "^7.27.6"
       },
@@ -3581,9 +3589,9 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
-      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
+      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -4867,6 +4875,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "nanoid": "^3.3.11",
         "picocolors": "^1.1.1",
@@ -4956,6 +4965,7 @@
       "resolved": "https://registry.npmjs.org/react/-/react-19.2.0.tgz",
       "integrity": "sha512-tmbWg6W31tQLeB5cdIBOicJDJRR2KzXsV7uSK9iNfLWQ5bIZfxuPEHp7M8wiHyHnn0DD1i7w3Zmin0FtkrwoCQ==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -4965,6 +4975,7 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.0.tgz",
       "integrity": "sha512-UlbRu4cAiGaIewkPyiRGJk0imDN2T3JjieT6spoL2UeSf5od4n5LB/mQ4ejmxhCFT1tYe8IvaFulzynWovsEFQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "scheduler": "^0.27.0"
       },
@@ -4990,9 +5001,9 @@
       }
     },
     "node_modules/react-i18next": {
-      "version": "16.3.0",
-      "resolved": "https://registry.npmjs.org/react-i18next/-/react-i18next-16.3.0.tgz",
-      "integrity": "sha512-XGYIVU6gCOL4UQsfp87WbbvBc2WvgdkEDI8r4TwACzFg1bXY8pd1d9Cw6u9WJ2soTKHKaF1xQEyWA3/dUvtAGw==",
+      "version": "16.3.1",
+      "resolved": "https://registry.npmjs.org/react-i18next/-/react-i18next-16.3.1.tgz",
+      "integrity": "sha512-HbYaBeA58Hg38OzdEvJp4kLIvk10rp9F9Jq+wNkqtqxDXObtdYMSsQnegWgdUVcpZjZuK9ZxehM+Z9BW2Vqgqw==",
       "license": "MIT",
       "dependencies": {
         "@babel/runtime": "^7.27.6",
@@ -5412,6 +5423,7 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -5490,6 +5502,7 @@
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "devOptional": true,
       "license": "Apache-2.0",
+      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -5700,6 +5713,7 @@
       "integrity": "sha512-BxAKBWmIbrDgrokdGZH1IgkIk/5mMHDreLDmCJ0qpyJaAteP8NvMhkwr/ZCQNqNH97bw/dANTE9PDzqwJghfMQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.25.0",
         "fdir": "^6.5.0",
@@ -5793,6 +5807,7 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
diff --git a/frontend/src/services/api.ts b/frontend/src/services/api.ts
index ccf5885..5b05088 100644
--- a/frontend/src/services/api.ts
+++ b/frontend/src/services/api.ts
@@ -19,10 +19,10 @@ import type {
 /**
  * API Client Configuration
  * - In Docker: VITE_API_BASE_URL is empty string, use relative path
- * - In development: Use VITE_API_BASE_URL from .env or default to localhost:12015
+ * - In development: Use VITE_API_BASE_URL from .env or default to localhost:8000
  */
 const envApiBaseUrl = import.meta.env.VITE_API_BASE_URL
-const API_BASE_URL = envApiBaseUrl !== undefined ? envApiBaseUrl : 'http://localhost:12015'
+const API_BASE_URL = envApiBaseUrl !== undefined ? envApiBaseUrl : 'http://localhost:8000'
 const API_VERSION = 'v1'
 
 class ApiClient {
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 3b52191..c9e87cf 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -6,10 +6,10 @@ import path from 'path'
 export default defineConfig({
   plugins: [react()],
   server: {
-    port: 12011,
+    port: 5173,
     proxy: {
       '/api': {
-        target: 'http://localhost:12015',
+        target: 'http://localhost:8000',
         changeOrigin: true,
       },
     },
diff --git a/openspec/project.md b/openspec/project.md
index bcd0eaf..38ce803 100644
--- a/openspec/project.md
+++ b/openspec/project.md
@@ -14,10 +14,11 @@ Tool_OCR is a web-based application for batch image-to-text conversion with mult
 ## Tech Stack
 
 ### Development Environment
-- **OS Platform**: Windows 10/11
-- **Python Version**: 3.10 (via Conda)
-- **Environment Manager**: Conda
-- **Virtual Environment Path**: `C:\Users\lin46\.conda\envs\tool_ocr`
+- **OS Platform**: WSL2 Ubuntu 24.04
+- **Python Version**: 3.12
+- **Environment Manager**: Python venv
+- **Virtual Environment Path**: `./venv`
+- **Node.js**: 24.x LTS (via nvm)
 - **IDE Recommended**: VS Code with Python + React extensions
 
 ### Backend Technologies
@@ -74,11 +75,15 @@ Tool_OCR is a web-based application for batch image-to-text conversion with mult
 
 ### Environment Setup (Backend)
 ```bash
-# Create new conda environment
-conda create -n tool_ocr python=3.10 -y
+# Run automated setup script (recommended)
+./setup_dev_env.sh
+
+# Or manually:
+# Create Python virtual environment
+python3 -m venv venv
 
 # Activate environment
-conda activate tool_ocr
+source venv/bin/activate
 
 # Install dependencies
 pip install -r requirements.txt
diff --git a/setup_conda.sh b/setup_conda.sh
deleted file mode 100755
index cb8e2b8..0000000
--- a/setup_conda.sh
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/bin/bash
-# Tool_OCR - Conda 環境設置腳本 (macOS Apple Silicon)
-
-set -e  # 遇到錯誤立即退出
-
-echo "==================================="
-echo "Tool_OCR - 環境設置"
-echo "==================================="
-
-# 檢查 Conda 是否已安裝
-if command -v conda &> /dev/null; then
-    echo "✓ Conda 已安裝: $(conda --version)"
-else
-    echo "📦 開始安裝 Miniconda..."
-
-    # 下載 Miniconda for Apple Silicon
-    MINICONDA_URL="https://repo.anaconda.com/miniconda/Miniconda3-latest-MacOSX-arm64.sh"
-    INSTALLER="/tmp/miniconda_installer.sh"
-
-    echo "下載 Miniconda..."
-    curl -o "$INSTALLER" "$MINICONDA_URL"
-
-    echo "安裝 Miniconda (默認安裝到 ~/miniconda3)..."
-    bash "$INSTALLER" -b -p "$HOME/miniconda3"
-
-    # 初始化 Conda
-    echo "初始化 Conda..."
-    "$HOME/miniconda3/bin/conda" init zsh bash
-
-    # 清理安裝檔案
-    rm "$INSTALLER"
-
-    echo "✓ Miniconda 安裝完成!"
-    echo ""
-    echo "⚠️  請執行以下命令以載入 Conda:"
-    echo "    source ~/.zshrc  (如果使用 zsh)"
-    echo "    source ~/.bash_profile  (如果使用 bash)"
-    echo ""
-    echo "然後重新執行此腳本繼續設置。"
-    exit 0
-fi
-
-# 檢查是否在 base 環境
-CURRENT_ENV=$(conda info --envs | grep '*' | awk '{print $1}')
-echo "當前 Conda 環境: $CURRENT_ENV"
-
-# 創建 tool_ocr 環境
-ENV_NAME="tool_ocr"
-if conda env list | grep -q "^$ENV_NAME "; then
-    echo "✓ 環境 '$ENV_NAME' 已存在"
-    read -p "是否重新創建? (y/N): " -n 1 -r
-    echo
-    if [[ $REPLY =~ ^[Yy]$ ]]; then
-        echo "移除現有環境..."
-        conda env remove -n "$ENV_NAME" -y
-    else
-        echo "使用現有環境"
-        exit 0
-    fi
-fi
-
-echo "📦 創建 Conda 環境: $ENV_NAME (Python 3.10)..."
-conda create -n "$ENV_NAME" python=3.10 -y
-
-echo ""
-echo "✅ Conda 環境設置完成!"
-echo ""
-echo "下一步:"
-echo "  1. 啟動環境: conda activate $ENV_NAME"
-echo "  2. 安裝依賴: pip install -r requirements.txt"
-echo "  3. 下載 PaddleOCR 模型"
-echo ""
diff --git a/setup_dev_env.sh b/setup_dev_env.sh
new file mode 100755
index 0000000..f4790fc
--- /dev/null
+++ b/setup_dev_env.sh
@@ -0,0 +1,165 @@
+#!/bin/bash
+# Tool_OCR WSL Ubuntu 開發環境設置腳本
+
+set -e  # 遇到錯誤時停止
+
+echo "================================"
+echo "Tool_OCR 開發環境設置"
+echo "================================"
+echo ""
+
+# 顏色定義
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m' # No Color
+
+# 檢查是否為 root
+if [ "$EUID" -eq 0 ]; then
+    echo -e "${RED}請不要使用 sudo 運行此腳本${NC}"
+    echo "腳本會在需要時提示輸入 sudo 密碼"
+    exit 1
+fi
+
+echo -e "${YELLOW}[1/8] 更新系統套件列表...${NC}"
+sudo apt update
+
+echo ""
+echo -e "${YELLOW}[2/8] 安裝 Python 開發工具...${NC}"
+sudo apt install -y \
+    python3-pip \
+    python3-venv \
+    python3-dev \
+    build-essential \
+    pkg-config
+
+echo ""
+echo -e "${YELLOW}[3/8] 安裝系統層級依賴...${NC}"
+sudo apt install -y \
+    pandoc \
+    libmagic1 \
+    libmagic-dev \
+    fonts-noto-cjk \
+    fonts-noto-cjk-extra \
+    fonts-liberation \
+    libpango-1.0-0 \
+    libpangocairo-1.0-0 \
+    libcairo2 \
+    libcairo2-dev \
+    libgdk-pixbuf2.0-0 \
+    libgdk-pixbuf-2.0-dev \
+    libffi-dev \
+    libffi8 \
+    shared-mime-info \
+    poppler-utils \
+    libgl1 \
+    libglib2.0-0 \
+    libglib2.0-dev \
+    libgomp1 \
+    libjpeg-dev \
+    libpng-dev \
+    libtiff-dev \
+    libopencv-dev \
+    libsqlite3-dev \
+    libreoffice-core-nogui \
+    libreoffice-writer-nogui \
+    libreoffice-impress-nogui \
+    ca-certificates \
+    curl \
+    wget \
+    libxml2 \
+    libxslt1-dev \
+    python3-cffi
+
+echo ""
+echo -e "${YELLOW}[4/8] 安裝 Node.js 和 npm...${NC}"
+# 檢查是否已安裝 nvm
+if [ ! -d "$HOME/.nvm" ]; then
+    echo "安裝 nvm..."
+    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
+
+    # 載入 nvm
+    export NVM_DIR="$HOME/.nvm"
+    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+else
+    echo "nvm 已安裝"
+    export NVM_DIR="$HOME/.nvm"
+    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+fi
+
+# 安裝 Node.js LTS
+echo "安裝 Node.js LTS..."
+nvm install --lts
+nvm use --lts
+
+echo ""
+echo -e "${YELLOW}[5/8] 創建 Python 虛擬環境...${NC}"
+if [ ! -d "venv" ]; then
+    python3 -m venv venv
+    echo "虛擬環境已創建"
+else
+    echo "虛擬環境已存在"
+fi
+
+echo ""
+echo -e "${YELLOW}[6/8] 安裝 Python 依賴...${NC}"
+source venv/bin/activate
+pip install --upgrade pip setuptools wheel
+pip install -r requirements.txt
+
+echo ""
+echo -e "${YELLOW}測試關鍵套件...${NC}"
+python -c "import magic; print('✓ python-magic')" || echo "✗ python-magic failed"
+python -c "from weasyprint import HTML; print('✓ WeasyPrint')" || echo "✗ WeasyPrint failed"
+python -c "import cv2; print('✓ OpenCV')" || echo "✗ OpenCV failed"
+
+echo ""
+echo -e "${YELLOW}[7/8] 安裝前端依賴...${NC}"
+cd frontend
+
+# 清理可能存在的鎖定文件
+if [ -d "node_modules" ]; then
+    echo "清理現有 node_modules..."
+    rm -rf node_modules package-lock.json
+fi
+
+# 清理 npm 緩存
+npm cache clean --force
+
+# 安裝依賴（使用 --force 避免鎖定問題）
+echo "安裝前端依賴..."
+npm install --force
+
+cd ..
+
+echo ""
+echo -e "${YELLOW}[8/8] 創建必要的目錄...${NC}"
+mkdir -p backend/uploads/{temp,processed,images}
+mkdir -p backend/storage/{markdown,json,exports}
+mkdir -p backend/models/paddleocr
+mkdir -p backend/logs
+
+echo ""
+echo -e "${GREEN}================================${NC}"
+echo -e "${GREEN}環境設置完成！${NC}"
+echo -e "${GREEN}================================${NC}"
+echo ""
+echo "下一步操作："
+echo "1. 初始化數據庫:"
+echo "   source venv/bin/activate"
+echo "   cd backend"
+echo "   alembic upgrade head"
+echo "   python create_test_user.py"
+echo "   cd .."
+echo ""
+echo "2. 啟動後端:"
+echo "   ./start_backend.sh"
+echo ""
+echo "3. 啟動前端 (新終端):"
+echo "   ./start_frontend.sh"
+echo ""
+echo "4. 訪問應用:"
+echo "   前端: http://localhost:5173"
+echo "   API文檔: http://localhost:8000/docs"
+echo "   健康檢查: http://localhost:8000/health"
+echo ""
diff --git a/start_backend.sh b/start_backend.sh
new file mode 100755
index 0000000..f4dde24
--- /dev/null
+++ b/start_backend.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+# Tool_OCR - 後端開發服務器啟動腳本
+
+set -e
+
+# 顏色定義
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m' # No Color
+
+echo -e "${YELLOW}正在啟動 Tool_OCR 後端開發服務器...${NC}"
+echo ""
+
+# 檢查虛擬環境
+if [ ! -d "venv" ]; then
+    echo -e "${RED}錯誤: 未找到虛擬環境${NC}"
+    echo "請先運行: ./setup_dev_env.sh"
+    exit 1
+fi
+
+# 檢查 .env.local
+if [ ! -f ".env.local" ]; then
+    echo -e "${RED}錯誤: 未找到 .env.local 配置文件${NC}"
+    echo "請確保 .env.local 文件存在"
+    exit 1
+fi
+
+# 啟動虛擬環境
+echo -e "${GREEN}啟動 Python 虛擬環境...${NC}"
+source venv/bin/activate
+
+# 載入環境變量
+echo -e "${GREEN}載入環境變量...${NC}"
+export $(cat .env.local | grep -v '^#' | xargs)
+
+# 進入後端目錄
+cd backend
+
+# 檢查必要的目錄
+echo -e "${GREEN}檢查目錄結構...${NC}"
+mkdir -p uploads/{temp,processed,images}
+mkdir -p storage/{markdown,json,exports}
+mkdir -p models/paddleocr
+mkdir -p logs
+
+# 啟動後端服務器
+echo ""
+echo -e "${GREEN}================================${NC}"
+echo -e "${GREEN}後端服務器啟動中...${NC}"
+echo -e "${GREEN}================================${NC}"
+echo ""
+echo "API 文檔: http://localhost:8000/docs"
+echo "健康檢查: http://localhost:8000/health"
+echo ""
+echo "按 Ctrl+C 停止服務器"
+echo ""
+
+uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
diff --git a/start_frontend.sh b/start_frontend.sh
new file mode 100755
index 0000000..2a18672
--- /dev/null
+++ b/start_frontend.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# Tool_OCR - 前端開發服務器啟動腳本
+
+set -e
+
+# 顏色定義
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m' # No Color
+
+echo -e "${YELLOW}正在啟動 Tool_OCR 前端開發服務器...${NC}"
+echo ""
+
+# 檢查 node_modules
+if [ ! -d "frontend/node_modules" ]; then
+    echo -e "${RED}錯誤: 未找到 node_modules${NC}"
+    echo "請先運行: ./setup_dev_env.sh"
+    exit 1
+fi
+
+# 載入 nvm
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
+# 進入前端目錄
+cd frontend
+
+# 啟動前端服務器
+echo ""
+echo -e "${GREEN}================================${NC}"
+echo -e "${GREEN}前端服務器啟動中...${NC}"
+echo -e "${GREEN}================================${NC}"
+echo ""
+echo "前端界面: http://localhost:5173"
+echo ""
+echo "按 Ctrl+C 停止服務器"
+echo ""
+
+npm run dev