{
  "handle": "MeaningChangeSweep",
  "gloss": "When a value's meaning changes, find and recheck every reader of the old meaning",
  "mechanism": "When the meaning of a value changes while its name, type or position stays, every reader of that value is enumerated before the change is declared done: code paths, tests that compute with it, documents, configuration comments, dashboards, other repositories and hand-copied interfaces. Each reader is updated, rechecked against the new meaning, or recorded as unaffected with a reason. A passing test suite is not evidence of completeness: a test relied on to tell the meanings apart is checked for what it now asserts, for example by running it against the old reading, as in {{detector_self_test}}. The sweep is recorded with its search scope, and readers outside that scope are listed as unchecked.",
  "invariants": [
    "Every reader found is updated, rechecked or recorded as unaffected, with a reason.",
    "The search scope is recorded, and readers outside it are reported as unchecked.",
    "A test relied on to distinguish the old meaning from the new counts as checking it only once it has been shown to fail under the old meaning."
  ],
  "failure_modes": [
    "Green suite read as complete: tests that still assert the old meaning pass, so stale readers survive.",
    "Repository boundary: readers in another repository, indexer or client copy are not searched.",
    "Prose readers missed: documents, configuration comments and runbooks keep the old formula.",
    "Name search only: readers that receive the value through a renamed variable or a tuple position are not found."
  ],
  "_meta": {
    "path": [
      "Mind",
      "Reasoning"
    ],
    "ring": 2,
    "tier": 2,
    "related": [
      "Termdrift#18ef",
      "Endsettle#d716",
      "ExpandContractMigration",
      "SpecBinding",
      "CompatibilityCheck#7f70"
    ]
  },
  "sema_id": "sema:MeaningChangeSweep#mh:SHA-256:b1e06b26420768c8bb55aa8d13a1f3b8a719111364f28c4c6b2175f4f50f2369",
  "sema_ref": "MeaningChangeSweep#b1e0",
  "sema_stub": "b1e0",
  "dependencies": {
    "references": {
      "detector_self_test": "sema:DetectorSelfTest#mh:SHA-256:8d48b9e7f6dbfc6ea93f0de86259339a64d1ad994089f2ff5d8642b1d2cc842a"
    }
  },
  "sema_layer": "Mind",
  "sema_category": "Reasoning",
  "used_by": {
    "references": {
      "ExpandContractMigration": "sema:ExpandContractMigration#mh:SHA-256:14c61a53ba4bbc21a5a0f6b43c4510a812ce04b3ada87bf378ded624b9135e7f",
      "SpecBinding": "sema:SpecBinding#mh:SHA-256:16e5d03844bf2b95629b6fedc9f9067d2611a701431dc6f933395e7f0911f2e5"
    }
  }
}