release: v2.0 - 完整功能管理系统

主要功能:
- 完整的Flask-Admin后台管理系统
- 网站/标签/新闻管理功能
- 用户登录认证系统
- 科技感/未来风UI设计
- 标签分类系统（取代传统分类）
- 详情页面展示
- 数据库迁移脚本
- 书签导入解析工具

技术栈:
- Flask + SQLAlchemy
- Flask-Admin管理界面
- Bootstrap 4响应式设计
- 用户认证与权限管理

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

migrations/add_code_field.py

@@ -0,0 +1,62 @@
+"""添加code字段的迁移脚本"""
+import sys
+import os
+import random
+
+# 添加项目根目录到系统路径
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from app import create_app
+from models import db, Site
+from sqlalchemy import text
+
+# 创建应用上下文
+app = create_app()
+
+def generate_unique_code():
+    """生成唯一的8位数字编码"""
+    while True:
+        # 生成10000000-99999999之间的随机数
+        code = str(random.randint(10000000, 99999999))
+        # 检查是否已存在
+        if not Site.query.filter_by(code=code).first():
+            return code
+
+with app.app_context():
+    try:
+        print("Step 1: Adding code column to sites table...")
+
+        # 添加code列（先允许为空）
+        with db.engine.connect() as connection:
+            connection.execute(text('ALTER TABLE sites ADD COLUMN code VARCHAR(8) NULL COMMENT "8位数字编码"'))
+            connection.commit()
+
+        print("  - Column added successfully!")
+
+        print("\nStep 2: Generating codes for existing sites...")
+
+        # 为现有网站生成code
+        sites = Site.query.all()
+        for site in sites:
+            site.code = generate_unique_code()
+            print(f"  - Site #{site.id} '{site.name}': code = {site.code}")
+
+        db.session.commit()
+        print(f"  - Generated codes for {len(sites)} sites!")
+
+        print("\nStep 3: Making code column NOT NULL and UNIQUE...")
+
+        # 现在修改列为NOT NULL和UNIQUE
+        with db.engine.connect() as connection:
+            connection.execute(text('ALTER TABLE sites MODIFY COLUMN code VARCHAR(8) NOT NULL'))
+            connection.execute(text('ALTER TABLE sites ADD UNIQUE INDEX idx_site_code (code)'))
+            connection.commit()
+
+        print("  - Code column constraints added!")
+        print("\n✓ Migration completed successfully!")
+
+    except Exception as e:
+        print(f"\n✗ Migration failed: {str(e)}")
+        import traceback
+        traceback.print_exc()
+        db.session.rollback()