diff --git a/docs/parity/entity-nbt-boolean-bytes.md b/docs/parity/entity-nbt-boolean-bytes.md
deleted file mode 100644
index baa19cc420..0000000000
--- a/docs/parity/entity-nbt-boolean-bytes.md
+++ /dev/null
@@ -1,94 +0,0 @@
-# Entity NBT boolean bytes
-
-H045 changes only `entity_nbt::flag`: use the existing NBT `int_value` conversion
-and then keep the low byte, comparing that byte with zero. The public function
-signature, generic `number()`, boxed-number helpers, field writers, species
-getters and pickup/AI policies are unchanged.
-
-Pinned Java 26.3 `TagValueInput.getBooleanOr` calls `NumericTag.byteValue`.
-Integral tags keep their low byte. FloatTag/DoubleTag call `Mth.floor`, mask 255
-and narrow to Byte. This version's `Mth.floor` is `(int)Math.floor(value)`, with
-saturating casts, matching existing `nbt_path::int_value`. Narrowing a Long to
-Int before Byte preserves its low bits, including values above Double's exact
-integer precision. The boxed-number conversion in `datafix::dynamic` truncates
-floating fractions and is a different boundary.
-
-## Frozen proof and build prerequisite
-
-Base: `d3f799f5d51df0e18f57bf5bb35b01c320b18fdb`.
-Unchanged d3 cannot build: existing raid and four older synthetic unit calls
-omit the newly required fifth `mob_to_nbt` argument. Those E0061 logs remain
-rejected build prerequisites, not parity failures.
-
-Both actual Game builds use the same authorized five-call compatibility patch,
-SHA-256 `d43a4f3bd9e844f286c861ce28072ce72da085c3a83e1eb041b94e71ce4f7aab`:
-the raid observer uses existing actual `Persist::uuid_of`; two SpellTicks,
-animal-integer and pickup synthetic tests use empty resolvers because they have
-no referenced live identities. No assertions/model values, UUID policy or raid
-behavior changed. PR #10544 subsequently landed all five repairs. The published
-branch retains those upstream repairs without duplicate compatibility changes.
-The frozen common patch remains byte-identical after the converter edit; no
-runtime pair is claimed against the later publication base.
-
-## Live command contract
-
-Driver SHA-256: `73968da787ed30e7178b4bb080cdc1f203692c4c47c45bfc3724ad33cf88f1c1`.
-Fresh Java reference SHA-256:
-`ac676ebe38788a43c6eb1f72ff4744e53a63d0961417898434f71e806a98804c`.
-
-`tools/test_entity_nbt_boolean_parity.py` uses the existing actual Game command
-harness and fresh pinned Java. It declares 26 inputs before capture: absence;
-Byte 0/1/-1; Short/Int/Long wrapping; a Long above 2^53; finite Float/Double
-fraction signs, wrap boundaries and overflow; numeric/non-numeric strings and
-a compound. Every case creates a distinct typed UUID-bound pig with Health 10,
-exact position, canonical NoGravity/persistence, a loaded stone floor and zero
-observation ticks. Complete body and absolute-clock traces remain raw.
-
-All 274 declared records compare as complete raw JSON (messages/styles,
-callbacks and fresh stores), without masks/tolerances. NoAI false omission and
-pickup false's always-written Byte 0 are separate strict observations. Actual
-identity/health/position, load/geometry and zero relative-clock admissions pass.
-No arbitrary AI/pickup behavior or whole-body/raw-clock equality is claimed.
-
-The baseline with the common compatibility patch matches 196/274; fixed Game
-matches 274/274 with the same script and fresh Java reference bytes. Its 78
-residuals belong to 13 numeric-input cases, each with 6 affected observations;
-they are not 78 independent defects. Default, canonical Byte, nonnumeric and
-positive/wrapping controls remain executable and raw.
-
-The resource-free regression calls actual Mob decode and save, checks modeled
-NoAI/pickup values and both no-raw and retained-raw encoding. It keeps NoAI's
-false omission, pickup's explicit false Byte, and unrelated raw data. Its old
-assertion fails at Short 256 (true versus required false).
-
-## Caller audit at the frozen base
-
-There are 71 in-file calls and 6 qualified external calls (excluding the separate
-fox bitflag helper). These are entity NBT booleans, not item-component BOOL or
-boxed-number consumers. Live runtime coverage is bounded to the pig fields
-above; the audit is not an all-species/lifecycle parity claim.
-
-| Caller group | Existing model/boundary | Runtime coverage |
-| --- | --- | --- |
-| Mob loader | NoAI, gravity, visibility, persistence, pickup and species flags | Pig NoAI/pickup matrix; other fields/callers untested live |
-| Entity-specific loaders | Item/orb, projectile/arrow/trident, frame/stand flags | Source audit only; their raw/default policies remain unchanged |
-| Game persistence/minecart/data writes | Loaded NoGravity flags | Source audit only |
-| Unmodeled command damage | Saved Invulnerable flag | Source audit only |
-| Nautilus loader | Sitting flag | Source audit only |
-
-Existing Allay/SulfurCube pickup getter overrides are unchanged. AgeLocked,
-from-bucket, tame and other species logic is not modified. Canonical numeric
-Byte 0/1/-1 and absent/nonnumeric behavior are retained by the conversion.
-
-Run with prepared resources, fresh output directories and an explicit binary:
-
-```sh
-python3 tools/test_entity_nbt_boolean_parity.py --reference-only \
-  --work-dir .local/entity-boolean-reference
-python3 tools/test_entity_nbt_boolean_parity.py --binary /path/to/horizon-client \
-  --work-dir .local/entity-boolean-native --reference .local/entity-boolean-reference/vanilla.jsonl
-```
-
-Each native invocation reruns Java and requires the exact immutable reference
-bytes. Complete programs, reference/native records, raw traces, rejected builds
-and common-patch manifests remain local evidence; no observer was added.
diff --git a/tools/test_entity_nbt_boolean_parity.py b/tools/test_entity_nbt_boolean_parity.py
index a5843f1876..a05f293d2e 100644
--- a/tools/test_entity_nbt_boolean_parity.py
+++ b/tools/test_entity_nbt_boolean_parity.py
@@ -81,7 +81,11 @@ def main():
         i = sys.argv.index('--reference'); reference = Path(sys.argv[i+1]).resolve()
         del sys.argv[i:i+2]
     if '--work-dir' not in sys.argv:
-        raise SystemExit('a fresh --work-dir is required')
+        # tools/parity.py runs every harness with no arguments: a fresh folder under .local.
+        import shutil
+        default = Path(__file__).resolve().parents[1] / '.local' / 'entity-nbt-boolean-parity'
+        shutil.rmtree(default, ignore_errors=True)
+        sys.argv += ['--work-dir', str(default)]
     build = Path(sys.argv[sys.argv.index('--work-dir')+1]).resolve()
     assert not build.exists(), 'preserve attempts; choose a fresh directory'
     build.mkdir(parents=True)