init: TEALab 2025 实验室网站项目

从百度网盘 /apps/bypy/dofile/ 下载的完整项目结构，包含：
- dofile/: Flask 后端（端口 5000）+ 静态前端（端口 6002）
- officefile/: 项目相关文档
- .gitignore: Python venv / 日志 / 缓存

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

dofile/backend/routes/api.py

@@ -0,0 +1,59 @@
+from flask import Blueprint, request, jsonify, send_from_directory
+from flask_login import login_required, current_user
+import sys
+import os
+
+# 添加父目录到路径
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+from models import db, Resource
+
+bp = Blueprint('api', __name__)
+
+@bp.route('/download/<int:resource_id>', methods=['GET'])
+def download_resource(resource_id):
+    """下载资源文件"""
+    resource = Resource.query.get_or_404(resource_id)
+    
+    # 检查是否需要登录
+    if resource.is_protected and not current_user.is_authenticated:
+        return jsonify({'error': 'Authentication required'}), 401
+    
+    # 增加下载计数
+    resource.download_count += 1
+    db.session.commit()
+    
+    # 返回文件
+    uploads_dir = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'uploads')
+    filename = os.path.basename(resource.file_path)
+    
+    return send_from_directory(uploads_dir, filename, as_attachment=True)
+
+@bp.route('/stats', methods=['GET'])
+@login_required
+def get_stats():
+    """获取统计数据（需要登录）"""
+    from models import Article, Resource, TeamMember
+    
+    stats = {
+        'articles': Article.query.count(),
+        'resources': Resource.query.count(),
+        'team_members': TeamMember.query.count(),
+        'total_downloads': db.session.query(db.func.sum(Resource.download_count)).scalar() or 0
+    }
+    
+    return jsonify({'stats': stats}), 200
+
+@bp.route('/protected-content', methods=['GET'])
+@login_required
+def get_protected_content():
+    """获取受保护内容（需要登录）"""
+    from models import Article, Resource
+    
+    protected_articles = Article.query.filter_by(is_protected=True, published=True).all()
+    protected_resources = Resource.query.filter_by(is_protected=True).all()
+    
+    return jsonify({
+        'articles': [article.to_dict() for article in protected_articles],
+        'resources': [resource.to_dict() for resource in protected_resources]
+    }), 200
+