fix(db): unify table name prefix to mjk_ for update tables

- Rename app_releases → mjk_app_releases
- Rename release_packages → mjk_release_packages
- Update ForeignKey reference and migration file
- Add pre-commit hook: check_table_prefix.py to prevent future violations

python-api/app/models/update.py

@@ -16,7 +16,7 @@ from app.db.session import Base
 class AppRelease(Base):
     """应用版本发布记录"""
 
-    __tablename__ = "app_releases"
+    __tablename__ = "mjk_app_releases"
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
     version: Mapped[str] = mapped_column(String(20), unique=True, nullable=False, index=True)
@@ -38,12 +38,12 @@ class AppRelease(Base):
 class ReleasePackage(Base):
     """平台安装包信息"""
 
-    __tablename__ = "release_packages"
+    __tablename__ = "mjk_release_packages"
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
     release_id: Mapped[int] = mapped_column(
         Integer,
-        ForeignKey("app_releases.id", ondelete="CASCADE"),
+        ForeignKey("mjk_app_releases.id", ondelete="CASCADE"),
         nullable=False,
     )
     platform: Mapped[str] = mapped_column(String(20), nullable=False)