{
  "context": "Tests design-before-coding workflow and deep module design for a non-trivial refactor.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Design brief first",
      "description": "Includes a compact design brief before or alongside implementation rather than only code.",
      "max_score": 8
    },
    {
      "name": "Complexity goal",
      "description": "States a total-complexity goal involving reduced change amplification, cognitive load, hidden coupling, or future discount changes.",
      "max_score": 8
    },
    {
      "name": "Two alternatives",
      "description": "Compares at least two candidate designs.",
      "max_score": 10
    },
    {
      "name": "Comparison dimensions",
      "description": "Compares alternatives using at least four of: module depth, public surface, leakage, pass-throughs, layer fit, change impact, caller burden.",
      "max_score": 10
    },
    {
      "name": "Interface contract",
      "description": "Documents the chosen module interface with purpose, operations, inputs, outputs, errors or invariants, side effects, caller responsibilities, hidden knowledge, and non-goals.",
      "max_score": 12
    },
    {
      "name": "Deep module",
      "description": "Chooses a module that hides discount sequencing/rules behind a small caller-facing operation.",
      "max_score": 10
    },
    {
      "name": "No temporal split",
      "description": "Does not split the design mainly into parser/validator/processor-style steps for the discount workflow.",
      "max_score": 6
    },
    {
      "name": "Minimal API",
      "description": "Exposes few intention-revealing operations rather than many tiny methods matching each internal rule.",
      "max_score": 8
    },
    {
      "name": "Centralizes special cases",
      "description": "Centralizes or designs away discount special cases instead of leaving them duplicated in handlers.",
      "max_score": 8
    },
    {
      "name": "Design gates",
      "description": "Answers mandatory gates including deepest module, hidden knowledge, leakage/pass-through risk, and easier future change.",
      "max_score": 12
    },
    {
      "name": "Result report",
      "description": "Reports complexity hidden, interfaces changed/created, alternatives rejected, and remaining tradeoffs.",
      "max_score": 8
    }
  ]
}