fix: 修两个 bug

1. ArticleRead.user_id 改 Integer(users.id 是 Integer,不是 BigInteger)
   alembic 0007 同样改 Integer
2. ArticleDetail.vue toggleRead 重复 catch 块导致 build 失败
   (edit 时新加的 catch 跟 toggleStar 残留的 catch 撞了)

backend/app/models/article_read.py

@@ -9,12 +9,13 @@
 注意:
 - 删文章时 ondelete=CASCADE 自动清掉已读记录
 - 这是和 bookmarks 并列的"用户行为"表
+- user_id 是 Integer(users.id 是 Integer),article_id 是 BigInteger(articles.id 是 BigInteger)
 """
 from __future__ import annotations
 
 from datetime import datetime
 
-from sqlalchemy import BigInteger, DateTime, ForeignKey, Index, func
+from sqlalchemy import BigInteger, DateTime, ForeignKey, Index, Integer, func
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.database import Base
@@ -24,7 +25,7 @@ class ArticleRead(Base):
     __tablename__ = "article_reads"
 
     user_id: Mapped[int] = mapped_column(
-        ForeignKey("users.id", ondelete="CASCADE"), primary_key=True
+        Integer, ForeignKey("users.id", ondelete="CASCADE"), primary_key=True
     )
     article_id: Mapped[int] = mapped_column(
         BigInteger,