{
  "skill_name": "incremental-implementation",
  "evals": [
    {
      "id": 1,
      "name": "thin-vertical-slice",
      "prompt": "Implement a user profile page with avatar upload, bio editing, and social links. The backend uses GraphQL.",
      "expected_output": "A sequence of vertical slices where each slice delivers end-to-end value (e.g., read-only profile first, then edit, then avatar).",
      "assertions": [
        "The plan uses vertical slices, not horizontal layers",
        "Each slice delivers user-visible value",
        "The first slice is deployable independently",
        "Dependencies between slices are explicit",
        "No slice requires more than 2 days of work"
      ]
    },
    {
      "id": 2,
      "name": "database-migration-safety",
      "prompt": "Add a required 'tenant_id' column to the 'users' table which has 10M rows and is queried by 50+ features.",
      "expected_output": "A migration plan that preserves uptime, handles backfill, and updates queries incrementally.",
      "assertions": [
        "The plan includes a zero-downtime migration strategy",
        "Backfill of existing rows is addressed",
        "Queries are updated before the column is enforced",
        "A rollback plan exists for each step",
        "The plan uses feature flags or gradual rollout"
      ]
    },
    {
      "id": 3,
      "name": "resists-big-bang",
      "prompt": "Rewrite the entire frontend from React to Vue.",
      "expected_output": "The skill pushes back on big-bang rewrites and proposes an incremental strangler fig approach.",
      "assertions": [
        "The output questions the need for a full rewrite",
        "The output proposes incremental migration",
        "The output identifies risks of big-bang approaches",
        "The output suggests a pilot or proof-of-concept first"
      ]
    }
  ]
}