{
  "context": "Tests whether the agent correctly places UIViewController lifecycle work in the right methods (viewIsAppearing for geometry-dependent scroll, viewDidLoad for setup), follows constraint best practices (activate[], no remove/recreate, identifiers, priority ≤999), and animates layout changes correctly (constant update + layoutIfNeeded on superview).",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "scrollToItem in viewIsAppearing",
      "description": "The scrollToItem(at:at:animated:) call (or equivalent scroll-to-selected logic) is inside viewIsAppearing(_:), NOT in viewDidLoad or viewWillAppear",
      "max_score": 12
    },
    {
      "name": "Setup in viewDidLoad",
      "description": "Subview creation, addSubview calls, constraint setup, and data source/delegate assignment are all in viewDidLoad — NOT in viewIsAppearing or viewWillAppear",
      "max_score": 10
    },
    {
      "name": "super called in all lifecycle overrides",
      "description": "Every overridden lifecycle method (viewDidLoad, viewIsAppearing, viewWillAppear, viewDidLayoutSubviews, etc.) calls super before or as part of its body",
      "max_score": 8
    },
    {
      "name": "translatesAutoresizingMaskIntoConstraints = false",
      "description": "Every programmatically created view has translatesAutoresizingMaskIntoConstraints set to false before constraints are added",
      "max_score": 8
    },
    {
      "name": "NSLayoutConstraint.activate used",
      "description": "Constraints are activated using NSLayoutConstraint.activate([...]) — NOT via individual constraint.isActive = true calls",
      "max_score": 8
    },
    {
      "name": "Header constraint stored and reused",
      "description": "The collapsible header height (or equivalent) constraint is stored as a property and its .constant is modified to toggle states — the constraint is NOT removed and recreated",
      "max_score": 12
    },
    {
      "name": "Animation uses layoutIfNeeded on superview",
      "description": "The expand/collapse animation calls layoutIfNeeded() inside a UIView.animate block on the superview (or view) — NOT by deactivating/reactivating constraints inside the animation block",
      "max_score": 10
    },
    {
      "name": "Runtime priority ≤ 999",
      "description": "Any constraint whose priority is changed at runtime uses a value ≤ 999 (e.g., UILayoutPriority(999) or .defaultHigh) — NOT UILayoutPriority.required (1000)",
      "max_score": 8
    },
    {
      "name": "Constraint identifiers set",
      "description": "At least one key constraint (e.g., the header height constraint or a major layout anchor) has its .identifier property set to a descriptive string",
      "max_score": 10
    },
    {
      "name": "viewDidLayoutSubviews limited to layer work",
      "description": "If viewDidLayoutSubviews is overridden, it contains ONLY lightweight layer adjustments (e.g., cornerRadius, shadowPath) and does NOT set up constraints or subviews",
      "max_score": 7
    },
    {
      "name": "No geometry work in viewWillAppear",
      "description": "viewWillAppear does NOT contain any geometry-dependent work such as scrolling, frame reading, or layout-dependent calculations",
      "max_score": 7
    }
  ]
}