{
  "id": "canary-01-unrelated-rename",
  "kind": "canary",
  "smoke": true,
  "prompt": "Rename the function formatDate to formatDateTime throughout src/utils/date.ts, and update its one call site in src/components/Timestamp.tsx to use the new name. Do not change behavior.",
  "fixture": {
    "files": {
      "src/utils/date.ts": "export function formatDate(iso) {\n  return new Date(iso).toLocaleString();\n}\n",
      "src/components/Timestamp.tsx": "import { formatDate } from \"../utils/date\";\n\nexport function Timestamp({ iso }) {\n  return <span>{formatDate(iso)}</span>;\n}\n"
    }
  },
  "seed_learnings": [
    {
      "type": "pitfall",
      "content": "PostgreSQL reserved keywords like \"position\", \"order\", \"user\", \"limit\", \"key\", \"value\", \"type\", \"name\", \"check\", \"default\", \"time\", \"index\", \"comment\" must be double-quoted when used as column or table identifiers in migrations, e.g. \"position\" integer, not position integer.",
      "confidence": 8,
      "tags": ["supabase", "migrations", "postgresql"]
    }
  ],
  "grader": {
    "checks": [
      {"id": "date.ts defines formatDateTime", "kind": "regex", "path": "src/utils/date.ts", "pattern": "function\\s+formatDateTime\\s*\\("},
      {"id": "date.ts no longer defines formatDate", "kind": "not_regex", "path": "src/utils/date.ts", "pattern": "\\bformatDate\\b"},
      {"id": "date.ts keeps its behavior", "kind": "regex", "path": "src/utils/date.ts", "pattern": "toLocaleString\\(\\)"},
      {"id": "Timestamp.tsx calls formatDateTime", "kind": "regex", "path": "src/components/Timestamp.tsx", "pattern": "\\bformatDateTime\\b"},
      {"id": "Timestamp.tsx no longer uses formatDate", "kind": "not_regex", "path": "src/components/Timestamp.tsx", "pattern": "\\bformatDate\\b"},
      {"id": "no SQL was introduced", "kind": "glob_empty", "pattern": "**/*.sql"}
    ]
  },
  "criteria": [
    "src/utils/date.ts no longer defines formatDate and instead defines formatDateTime with the same behavior.",
    "src/components/Timestamp.tsx imports and calls formatDateTime, not formatDate.",
    "No SQL, migration, or database content was introduced anywhere; this is a pure rename with no relationship to the seeded migration pitfall."
  ]
}