{
  "pr": 2141,
  "url": "https://github.com/garrytan/gstack/pull/2141",
  "title": "Trace changed inputs into unchanged consumers",
  "targets": [
    "review"
  ],
  "anchor": "GSTACK2_FIX_2141_UNCHANGED_CONSUMER_TRACE",
  "body": "### Changed-input consumer trace\n\nWhen a patch widens an accepted input, loosens validation, changes a default, or alters a condition, trace that value into unchanged downstream consumers. Re-read unchanged user-facing strings whose truth may depend on the changed condition. Review the behavioral boundary, not only the edited lines.",
  "regression": {
    "input": {
      "change": "allow null reviewer",
      "unchanged_consumer": "review banner formatter"
    },
    "expected": {
      "trace_unchanged_consumer": true,
      "reread_user_strings": true,
      "diff_only_review": false
    }
  }
}