版本1.0.4 - 发布前准备

- 修复system.py缩进错误
- 优化前端页面样式（待重构）
- 改进API接口结构
- 完善文档和自动化脚本
- 平台基本功能稳定运行

platform/backend/models/__init__.py

@@ -20,7 +20,7 @@ class User(Base):
 class Topic(Base):
     __tablename__ = "topics"
 
-    id = Column(Integer, primary_key=True, index=True)
+    id = Column(String(50), primary_key=True, index=True)
     title = Column(String(500), nullable=False)
     field = Column(String(100))
     priority_score = Column(Integer, default=0)
@@ -34,12 +34,13 @@ class Topic(Base):
     )
     generated_at = Column(DateTime(timezone=True))  # 新增字段
     published_at = Column(DateTime(timezone=True))   # 新增字段
-    published_urls = Column(JSON)                    # {"zhihu": "url", ...}
+    platform_urls = Column(JSON)                    # {"zhihu": "url", ...}
 
 class AuditLog(Base):
     __tablename__ = "audit_logs"
 
     id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(50), nullable=False)
     user_id = Column(Integer, index=True)
     action = Column(String(50), index=True)         # login, create_user, delete_user, publish
     resource_type = Column(String(50))              # user, topic, article