{
  "schema": "contract-preservation-inventory/v1",
  "issue": 12,
  "pull_request": 13,
  "review_id": 66,
  "reviewed_head": "3bf9b77c6cc167a4e2a8706271bdf8e848d2c4fe",
  "source_revision": "31d1c11dcf397ddf6a23e98d6d9062f96bab0194",
  "contracts": [
    {
      "contract": "last_balance is an exact integer or NULL-compatible unknown value; boolean and floating-point coercion are invalid while zero and signed integer text remain valid",
      "status": "preserved",
      "preserved_by": [
        "test_update_rejects_bool_or_float_dated_balance_without_mutation",
        "test_update_rejects_empty_undated_balance_without_mutation",
        "test_update_preserves_zero_and_signed_integer_balance_semantics"
      ]
    },
    {
      "contract": "invalid account updates return validation_error before changing account cache or valuation history",
      "status": "preserved",
      "preserved_by": [
        "test_update_rejects_bool_or_float_dated_balance_without_mutation",
        "test_update_rejects_empty_undated_balance_without_mutation"
      ]
    },
    {
      "contract": "a historical dated candidate is append-only and cannot roll back a newer current cache",
      "status": "preserved",
      "preserved_by": [
        "test_historical_account_update_preserves_current_and_adds_one_candidate",
        "test_late_import_current_balance_is_authoritative_by_evidence_basis_date"
      ]
    },
    {
      "contract": "unknown basis remains distinct from last_synced_at and an undated valid balance write creates no dated candidate",
      "status": "preserved",
      "preserved_by": [
        "test_account_write_sync_timestamp_does_not_infer_balance_basis_or_candidate",
        "test_unknown_legacy_balance_basis_is_not_reported_as_valuation_date"
      ]
    },
    {
      "contract": "Review 65 create validation, actual zero, valid import recovery, public consumer, valuation selection, snapshot replay, read-only, migration, privacy, authentication, and menu semantics remain intact",
      "status": "preserved",
      "preserved_by": [
        "review66-focused-regressions",
        "review66-full-suite",
        "review66-ruff",
        "review66-compileall",
        "review66-diff-check"
      ]
    }
  ],
  "missing": 0,
  "ambiguous": 0,
  "limitations": [
    "Four fixture-dependent PDF tests remain skipped because private KB Bank and Toss Securities fixtures are unavailable."
  ]
}