{
  "context": "Tests whether the agent proactively applies SQLAlchemy 2.0 patterns, session best practices, eager loading, and cascade configuration when building a blog platform. The task says nothing about DeclarativeBase, Mapped types, eager loading strategy, or cascade rules.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "DeclarativeBase used (not declarative_base)",
      "description": "Base class inherits from DeclarativeBase, not the legacy declarative_base() factory. The task did not specify SQLAlchemy version.",
      "max_score": 10
    },
    {
      "name": "Mapped types used (not Column)",
      "description": "All model columns use Mapped[type] = mapped_column(...), not legacy Column().",
      "max_score": 10
    },
    {
      "name": "expire_on_commit=False",
      "description": "sessionmaker configured with expire_on_commit=False. The agent was NOT warned about DetachedInstanceError.",
      "max_score": 10
    },
    {
      "name": "Pool configuration complete",
      "description": "Engine specifies pool_pre_ping=True, pool_size, max_overflow, and pool_recycle. The agent was NOT asked about pool tuning.",
      "max_score": 12
    },
    {
      "name": "Eager loading on get_published_posts",
      "description": "The get_published_posts query uses selectinload or joinedload to load authors without N+1 queries. The task said 'with their authors loaded' but did not mention eager loading strategy.",
      "max_score": 14
    },
    {
      "name": "cascade='all, delete-orphan' on parent relationships",
      "description": "Author.posts and Post.comments relationships use cascade='all, delete-orphan'.",
      "max_score": 10
    },
    {
      "name": "ondelete='CASCADE' on ForeignKeys",
      "description": "Post.author_id and Comment.post_id ForeignKeys include ondelete='CASCADE'.",
      "max_score": 8
    },
    {
      "name": "back_populates used (not backref)",
      "description": "All relationships use back_populates for explicit bidirectional linking.",
      "max_score": 6
    },
    {
      "name": "select() API used",
      "description": "Queries use select() with db.execute(), not legacy db.query().",
      "max_score": 8
    },
    {
      "name": "Database URL from environment",
      "description": "Database URL read from os.getenv or os.environ, not hardcoded.",
      "max_score": 6
    },
    {
      "name": "Session yield/finally cleanup",
      "description": "Session dependency uses yield with finally for cleanup.",
      "max_score": 6
    }
  ]
}