diff --git a/benchmarks/rust-free-space-2026-10-07/collision-regression.json b/benchmarks/rust-free-space-2026-10-07/collision-regression.json
new file mode 100644
index 000000000..74cdc1534
--- /dev/null
+++ b/benchmarks/rust-free-space-2026-10-07/collision-regression.json
@@ -0,0 +1,254 @@
+{
+  "schema": 1,
+  "minecraft": "26.3",
+  "manifest_sha1": "4fe1aa1ef8da1cb95c5bad1fb98890ca56dd8ca3",
+  "platform": "Linux-7.0.0-31-generic-x86_64-with-glibc2.43",
+  "java": "openjdk 25.0.4.1 2026-08-18",
+  "rustc": "rustc 1.99.0 (b940084d7 2026-09-28)",
+  "registry_states": 35723,
+  "block_definitions": 1286,
+  "definition_counts": {
+    "tagged_full": 1221,
+    "never": 42,
+    "closed_shulker": 17,
+    "always": 4,
+    "not_extended": 2
+  },
+  "native_chunk_storage": "ProtoChunk",
+  "rust_chunk_storage": "TerrainChunk",
+  "fixtures": 80270,
+  "sources_sha256": {
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java": "61c320ce05a96cc0f4bf7a1526cb51a912e03bc64d8423f2dfd70513ce4f00a0",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaHeightmapOracle.java": "145c943637ed177cc4ef8a85f2484da8afd164868e84a8463882feec1653a860",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaCollisionOracle.java": "f2b4f440a5bbce4224a4b3cee494b0f7ddcafbf72db12592c94ef9fb94fbc8a6",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaBlockStateCodecOracle.java": "5c217a8cb72094020082bd4846ed675a6399b9fa371be95a221bd92d227b2e09",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaSuffocationOracle.java": "8dd870e65807bac4234085958830321061f0a3805dcf2b1219514107ba710503",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaFaceSupportOracle.java": "9ce939a435842867786fed648951bbe77f6ab843f6df09af15f3deb1948c4877",
+    "tools/test_world_collision_check_parity.py": "3b8a82f72220e20f96e33e2ac09030fd82cb6c3a7511e7b11387de413be6452e",
+    "tools/test_rust_parity.py": "29d3db08005873528894b45ca10dcd6278753650473b3eb574e53e06ede40ec6",
+    "tools/test_worldgen_parity.py": "b40972ab2ad222aa6d77537cc36b434a217baa1f1b56bbaad945d6e12fe776af",
+    "tools/lab.py": "d00bf107fa01b6c579734a082c3ca4ade3018f0d6851d46844acf17574f66e64",
+    "Cargo.toml": "3f93319c1eb70dbd7ba25cd74ef343fbf35c52c7c4752f955605c58699cbff9d",
+    "Cargo.lock": "cb1e87d449114a63edd904c0559d631e8fa9feeb27efd6539aacdcfeae178876",
+    "crates/horizon-world/examples/registry_collision_scan_fixture.rs": "e35aed3ae18c08c31f35ec0e9f8cfe6691dea587b587c95725610d9aa48b7daa",
+    "crates/horizon-core/Cargo.toml": "e21b502c949da93cf67826592459b687a8cbf737ef92fee514e3ed2cc7cd27ad",
+    "crates/horizon-core/src/bin/density_parity.rs": "e5b1dd33b7d01306c73cf072629b4fb186e9ab87b672a00108999d1a72263fd0",
+    "crates/horizon-core/src/bin/float_log_parity.rs": "4a655fcf8822ee7668c4bd126bc84d0b118864a6fc7f5a6aeee667d8bf2590b1",
+    "crates/horizon-core/src/bin/geometry_parity.rs": "27f6c09fe5018ac3de8e70e0f0bbf78f9abb14f5e4783bcaf46e8ca87b9c6f8a",
+    "crates/horizon-core/src/bin/noise_parity.rs": "c135bfc708d853e7061e81487d2cfe10de64b2f65677d3b4837cbfe0b8341010",
+    "crates/horizon-core/src/bin/parity.rs": "f35d928c66f958de39fac5e7e836a657eed95f83599e84899f7ea7a5802ba481",
+    "crates/horizon-core/src/bin/tick_parity.rs": "a54c164fe4814034d369947a887f5273966f5a878ba849204b80d1c729526a8f",
+    "crates/horizon-core/src/biome/seed_hash.rs": "5afbb4921c750826b395a08bf06f382fc7f01b5759a93de02a2749c523e2a317",
+    "crates/horizon-core/src/biome.rs": "908efa8cd4aa0a7adf1cb5e1a222e3dfb640eed5e9172e0fe7f0d1287afae7e8",
+    "crates/horizon-core/src/carving/ellipsoid.rs": "09232a7588610e8a9176fd9c62d40afb1fb89f2ecab6d555536a1d847b142d86",
+    "crates/horizon-core/src/carving.rs": "0aa3093caa0437868a8c0ed52a6c6e1993bd51c03583c670a2837e749eae5426",
+    "crates/horizon-core/src/density/arithmetic.rs": "372faec96c923e2cf4aa6c66c1ac398e676853274557823850dbc8933dd15ab1",
+    "crates/horizon-core/src/density/beardifier.rs": "bb1052e27dae4a01954ca78d7d5babafef85f3b2c704ccaf1920cb85a098cb50",
+    "crates/horizon-core/src/density/cache.rs": "38d0b6c9dd04ffef979fdad3f29cfebf98d331c8c9d430be5f39aa34f6c30975",
+    "crates/horizon-core/src/density/end_islands.rs": "168b9384237bd2e41d0ae5a74e944da4dc74e493bdec31fb73184c9a49e3de55",
+    "crates/horizon-core/src/density/graph/compiler.rs": "ac67deeb16f16d0859aa20e5a165811a29aca0b910037ee6bf5098211f3a6ede",
+    "crates/horizon-core/src/density/graph/mod.rs": "b776e7da934cb03051a3053d56d461c71e9978e084922fe4194147aa580c07bf",
+    "crates/horizon-core/src/density/graph/seeded.rs": "6bcdcaa3dffcfa9df673bbbea35120057a16ba3d2b506c52709c36cf8976b74a",
+    "crates/horizon-core/src/density/graph/tests.rs": "6bfb8cbff462587dd147b0775ea01d370abbd97544b9bd596c792df1b5f7e634",
+    "crates/horizon-core/src/density/interpolation.rs": "8c890f52b6467f38a94c654986a6a484b8e0b296ab98c398e60a6ce465b5b010",
+    "crates/horizon-core/src/density/interval.rs": "b42629163baa6b599a233afe8596d1c370cd81d015cc6fc36a9663aa47b98424",
+    "crates/horizon-core/src/density/mod.rs": "ca0d77d3282e3746ddcbc92bee97dbf640b9a56214e6ac1537f51f9a5b63d6e7",
+    "crates/horizon-core/src/density/power.rs": "d5b7270a128d4264268cd772109ad16d71a8ec3ff2d3b63b84cb985296d54a91",
+    "crates/horizon-core/src/density/rounding.rs": "71840c5206ff8d218ac29bf6f66915d5212764ba270c675711a866ba5b55a7a6",
+    "crates/horizon-core/src/density/selection.rs": "0dd26af2e85004ec5e053039ad11c384c17c56ace9ab45eb3f5cb3503c0b0330",
+    "crates/horizon-core/src/density/slice.rs": "5d77605573c0deda47778f1f78f7fa3fbf1944d8f5efbcc65cf589181cadf80b",
+    "crates/horizon-core/src/density/spline.rs": "6bb2e40f940fc6544d6fb09cb0b8cac722be03bc663dbdfb0f61faae207400bc",
+    "crates/horizon-core/src/density/surface.rs": "159e0e69cda74f870e80ea64fe523c4397e64af4ccb861bb9fd07b2c3cb91b00",
+    "crates/horizon-core/src/density/terrain_noise.rs": "8d0059d25eb5d248cb97a4c5a2e670d61528928ea151495c004f25adb723fe3e",
+    "crates/horizon-core/src/density/tests.rs": "7817796ee40d0ae241bfbebec6bca190e0a8e7d5a1caa8ddf858c3eaa58b8858",
+    "crates/horizon-core/src/density/world_fields.rs": "c1ce305cb8046b384d90c564cafb24af7365d580389637910f3d8b0cc18eb583",
+    "crates/horizon-core/src/geometry/border.rs": "1386f8080521231d05ba3e84d94a3e1d5218d35ccb3d5e9fe2bbb05a8739e573",
+    "crates/horizon-core/src/geometry/mod.rs": "c650386f9860e44a96c55f18c8f1428ca715fcb0bc5c2434db5b1caa43df27fe",
+    "crates/horizon-core/src/geometry/movement.rs": "bcfb452752940ce53ae6dc267a3c4eb29459046a063c1f884684ab4f4bd0068f",
+    "crates/horizon-core/src/geometry/shape/create.rs": "189812b91d5e0e3ad963afcd1a6e2831b31b8188df91a904ef27061e644806ad",
+    "crates/horizon-core/src/geometry/shape/face.rs": "f243bce81384040a95ce7984b02b5699206c596c537b2713097e86005b4d3a5c",
+    "crates/horizon-core/src/geometry/shape/join.rs": "f1b51887b7bf9482557e3ffa99e136f2e5db07ceeb05fdb116adf45e87129075",
+    "crates/horizon-core/src/geometry/shape.rs": "e8d88a763de1525f77a30b99591641e8a8b80946263acbde035a9bcc356df960",
+    "crates/horizon-core/src/geometry/sweep.rs": "abd6009c61555161ef2f18b431b2aa384b126c0871cae8b96a62358498a56a1d",
+    "crates/horizon-core/src/geometry/traversal.rs": "77a3da570a0b85582b669cf4d841cba4b06327006dda26d4a26df4e8ce05bae4",
+    "crates/horizon-core/src/geometry/trig.rs": "05cef9341a298a474221a0556a11ddf47650393ea7a97b4b2022a4da6628fe37",
+    "crates/horizon-core/src/lib.rs": "4255e16837fde42a52ba118f60581d197c571bb530b60d635e506184ebf4db0b",
+    "crates/horizon-core/src/noise/mod.rs": "1dab5a713abf702402e69ace1bf9e476bba544b0ede5a61c3c3afc60af0a03f3",
+    "crates/horizon-core/src/noise/normal.rs": "e9e7a46472a54a02c98c46da819842090567153b32fe0c84249009ef19af7aad",
+    "crates/horizon-core/src/noise/perlin.rs": "e73815447432eab7542f67366cb3f1b368d164e33f6c9cdbd045ac8e4db0932a",
+    "crates/horizon-core/src/noise/simplex.rs": "6c0dbc15b2b7510195dd28fceca01dcaac1847ccc4a84d299c351589c642fe7a",
+    "crates/horizon-core/src/noise/stack.rs": "7f6ef0e7d920139ef1a6ad3ec5640f92765715f86dcc5ec29f1a149984f45fa3",
+    "crates/horizon-core/src/noise/volume.rs": "3f05d2b1780acfdfee60037677d309937a5033b45ef428fc2d540942d4b56b43",
+    "crates/horizon-core/src/position/iter.rs": "32d2d8e74821cc4e49e3354202d35d3120e4415bfdda9375a73f2137ef651129",
+    "crates/horizon-core/src/position.rs": "e10101088e6902386b9b6d27773d44312f1ff72bebb19e57967a54945dde9dcd",
+    "crates/horizon-core/src/random/hash.rs": "0f88a127a1ba2705d3d6c0ebd009324d6ba86ffa2d27edf2d2a84765e690e4a3",
+    "crates/horizon-core/src/random/positional.rs": "35494745e5d4cf89e282c3ae0ee245e9f2640ddbbc03bc0055df742006a9c862",
+    "crates/horizon-core/src/random/worldgen.rs": "9f07ff33bcc038d34e27aa5465753bb21df18f2975e43cae201f709bc186945a",
+    "crates/horizon-core/src/random.rs": "ddb95d3a83e28ad605ff1f49f5df270cc543ca5ef1130e37d989dc74c8d861e6",
+    "crates/horizon-core/src/storage.rs": "f6c32201c64aefde06e57a2c767be46918df613548a322801546b133799cc33d",
+    "crates/horizon-core/src/text.rs": "e6553ddb5db5039e8dc4614b6a6dc9f35a26dc3d1673b68a04e72e7983b67abb",
+    "crates/horizon-core/src/ticks/generation.rs": "be1237e790693f633a61714ddae68c6506a777588a8a3ab5efbe53a35774dbd2",
+    "crates/horizon-core/src/ticks/heap.rs": "bf28afab8af77c3d243aa96cd8a1fb8d934140a4dbd07dbfdbf4e7908bb4b845",
+    "crates/horizon-core/src/ticks/index.rs": "1f1a6a568c2a30eafecb020ca4d5f5fc414860de85b8b381fc419a2e3e65c24a",
+    "crates/horizon-core/src/ticks/mod.rs": "01634630668172516b8b79d0907bad47f6e2c543a6d499c2fa4b201823b375cb",
+    "crates/horizon-world/Cargo.toml": "977338bf3e654193685b015d383493b9f59ff6f5d6210bec212cef8ac4a50bed",
+    "crates/horizon-world/src/bin/worldgen_parity.rs": "3143ceb9b56eecfd7667e5feb5f9f0cd13cfb8754b38d4ea338dbba97f2819da",
+    "crates/horizon-world/src/block_collision.rs": "39207247f2f6dd3ddc77640229044246f91b32054563f88a435f1bd92ad2092c",
+    "crates/horizon-world/src/block_collision_scan.rs": "20802862364c110ff85eeaf48606596a8468b83768dda46b412d337958790b41",
+    "crates/horizon-world/src/block_entities.rs": "a9deae92e6e5a1fcf4f0476c33ea4d170ddad6fd4b3303e1bb66d933973d5e06",
+    "crates/horizon-world/src/block_entity_push.rs": "12ee91bf604946234b24a0da4333f07d1830ab9743a422d41c8d0afac7d49cfd",
+    "crates/horizon-world/src/block_landing.rs": "33083fe39266fbefec1b3ea1a19f2afc609791d189da247c895e116ad6eb266a",
+    "crates/horizon-world/src/block_placement.rs": "524f4892d50bab77b7d89d19f7b048ffe746996f2ed7f376db2c6ab00ed75c24",
+    "crates/horizon-world/src/block_properties.rs": "b0bd8a983336c48e488a20caa77dd5c39b1a74bbd14ebc03b3b64556a1c864fc",
+    "crates/horizon-world/src/block_render.rs": "8df52ee11aef406a1571198a64048062a0ef6864e0058d9293a57f64b73c916a",
+    "crates/horizon-world/src/block_support.rs": "ade4fbd47284b450dabdd682dc86138b2ac05a0fd379525d7110648908245476",
+    "crates/horizon-world/src/block_survival.rs": "28ce64375e09819a4f13da9cfbe37c08b5ad0daf01b289c1c360b4567e50e811",
+    "crates/horizon-world/src/chunk.rs": "795895284d6e615bcb2082fceacdfe7025c152fb2934bb43f598f17a00ab46f1",
+    "crates/horizon-world/src/chunk_status.rs": "dbb8583cfa775203c544d24d69e03720385428f15a267a561356c21f5025e9c7",
+    "crates/horizon-world/src/climbing.rs": "6cd2f919872ff0b726effddaa57eccb805b8eae43f9d01144716010853891879",
+    "crates/horizon-world/src/collision.rs": "a749794d5c27ccd6c0d964ad02f9dc31d49d9f4fe4b7366cd4bd8155e681b00b",
+    "crates/horizon-world/src/collision_context.rs": "2176c7034e07f547510a8327cdad9d3b63f26e4754032b76b7d5fe13166c333c",
+    "crates/horizon-world/src/compression.rs": "4db73e6ca9a0d552d415ce60e7e88b89c9cf2b7d060a669ff8328f518316e101",
+    "crates/horizon-world/src/dynamic_support.rs": "5996bc1c436fb6215d8fc3d0bb4de5dd9b966d842d432580d624195771697fb8",
+    "crates/horizon-world/src/edge_backoff.rs": "5259d7aa44e64f88351d1556c44dd0edcad3b400a099c659755792efba7b5773",
+    "crates/horizon-world/src/entity_collision.rs": "09f2fd7f6cd56fc282f468ecfa765a94506929e9684bd3a5c90123e5b51cd627",
+    "crates/horizon-world/src/entity_move.rs": "a40a50d3e841625a75d4cfbb7c2630ab5a62a574456567e7234f401ae8441b32",
+    "crates/horizon-world/src/entity_obstruction.rs": "a4b28a19bf83b23611c59d94535c488db37e4aee24b22c973c545910894a809f",
+    "crates/horizon-world/src/fall_damage.rs": "8c28e2933493569fe05dea22332024287d28b0746b514dd465681040b003296b",
+    "crates/horizon-world/src/fluid.rs": "a0a1f34ba94d8b59dc975becee8952960764d67ae08cf2d6a8bcd40a614b15c4",
+    "crates/horizon-world/src/fluid_occupancy.rs": "26037579caeef6c8a5a2bde2c3d142d278558b76d77ebff401cee6e35f2ea961",
+    "crates/horizon-world/src/fluid_shape.rs": "28bb65a72f5bd074a354ba38a1b1707fcb0947537977a11540bba0adb85995c2",
+    "crates/horizon-world/src/free_space.rs": "913536bf4c85ddeeb378d76d1b5110b4175f5688e1a749f32fe6a6d86fbb478e",
+    "crates/horizon-world/src/ground_support.rs": "3e371d74ecede4d30beef0a7e8a2ee33463584a5b1ed3d852b394efcce1ffbe0",
+    "crates/horizon-world/src/heightmap.rs": "a5edef082b5af40d814421ea17e129b3b06d70abee6434ed263e4bba58571698",
+    "crates/horizon-world/src/interaction_shapes.rs": "f321284ddab440a394372b6dedc8b5cc29a653c0745251a9e96c650f21c33dea",
+    "crates/horizon-world/src/lib.rs": "302223c3742241915db90aa99a8c0c440871907dbcf9a40166b72dac33a37554",
+    "crates/horizon-world/src/liquid_collision.rs": "0f0a83b04e5a5bc9d98ed05fde4d6584ba69642e93522e726e4cfc325d6fcb1d",
+    "crates/horizon-world/src/living_air.rs": "b2de36bb50bed15e2808fe4a874fcef07f9fea0d2c96385b7b5e8ee9560d4442",
+    "crates/horizon-world/src/living_fall.rs": "da0f176f4731e1c86e08bfeee8167742fd1b86380ff0e9304c13c1ce3f1c67ab",
+    "crates/horizon-world/src/living_fluid.rs": "d7cd914cfb2a1f4876ce0ae95e999bf0ff1af732cce3ab4a3aa2d1ab881c7339",
+    "crates/horizon-world/src/living_landing.rs": "8bca4eb7977abc2b14fb7174be4ea355352106ea1e76ff5f3ad8696969d9eefd",
+    "crates/horizon-world/src/living_motion.rs": "56f8c84cfbe205a7a69912d5f76b52ef1efca149c1b6801d4684e25fb179aeb9",
+    "crates/horizon-world/src/main.rs": "fce57418b8c22a6a0a9044baa89ed3d9c243bc2e8413fea3ff0f32985daba021",
+    "crates/horizon-world/src/movement_emission.rs": "76e7d6f5b19c94676190f54389f9c4ce12cf89945ccfcb9c750de473223e7753",
+    "crates/horizon-world/src/movement_properties.rs": "6f01ab920b376a13f5ae12c3718f4dd067e1dff2b829585af00a8b2100f3775d",
+    "crates/horizon-world/src/movement_restitution.rs": "04b4fe0947e7e52576145bd8ed15920278e8a538afcc74d125eaca513dffa0ef",
+    "crates/horizon-world/src/movement_support.rs": "02d85cf572847f2e60b5a7f9d60b856888a67b3c1f4df03e81998c66fdf874be",
+    "crates/horizon-world/src/nbt.rs": "60262c3de8c8f68bc2da0370ccb17393d32b85f5f5022c6358599a7d32119ea6",
+    "crates/horizon-world/src/piston_movement.rs": "7a3fd2549a582b5f3a5c21aa05d67d944d62ca1105856679e100ac5b44e9a52f",
+    "crates/horizon-world/src/piston_shape.rs": "399c2337103b8e7e0eb5667227c5aa14f9549d6a467b7be7da3d0717f0263500",
+    "crates/horizon-world/src/player_travel.rs": "6841a677a900495eb6223031ef3ebe8d859bb98908dda0e2209e5f28839dc593",
+    "crates/horizon-world/src/powder_snow_collision.rs": "7289946a21478d11abfd2bdcdddff3d7f98e25bf6a68564fed45c3cc01ac2a36",
+    "crates/horizon-world/src/region.rs": "72b642e87fed37ed17f54d4c30f96c3b64d26c14bc0589c31ef40ff1616188fc",
+    "crates/horizon-world/src/registry/json.rs": "7a683afcd1742c5307756927d7f0aa779c7d7992af87d8d371dd98108728e235",
+    "crates/horizon-world/src/registry.rs": "f2e58b2b4d944ac8fc6226bd3352cefc3d2052d8473e02ccf7dc402b176df435",
+    "crates/horizon-world/src/registry_collision_scan.rs": "97cc950a9a4ba387b78e368f36d595f8664ab7730d132900d220ce23b92826ea",
+    "crates/horizon-world/src/registry_fall_ray.rs": "52935436132df505691144840dcbd858b15d00d8305997284e3a542ecf6bc0dc",
+    "crates/horizon-world/src/retrogen.rs": "6efd36a6293756688c1990a7965bd65609d7c5e2bf2a5f4f01d54932d2b9386b",
+    "crates/horizon-world/src/suffocation.rs": "bed219dd5bbab6263b98fbe3d0eb512cb96c52ae847210efe49514d05f22f11e",
+    "crates/horizon-world/src/tick_data.rs": "f8d04a69ea263f4168bce33f92e5b4ee2fe07d7caf50a1621c6b3ef6eb2479f3",
+    "crates/horizon-world/src/world_movement.rs": "f8fe9e34f2395d2a04c839d1c8ba78e09ce493c26de6f6e4e237b9c19c061da5",
+    "crates/horizon-world/src/world_ray.rs": "879bdbbe12f56deb705cc183933431489e840b71eade40c33391eed5949c2e61",
+    "crates/horizon-world/src/worldgen/anchor.rs": "d156b8a0b147a274cdd143409b441f4f43edecde6e8ee14ef9cf0309f743143a",
+    "crates/horizon-world/src/worldgen/aquifer/config.rs": "fcd2cc3a520c1527c88f095a3b5d38487e7ebb1ccecc5f757f93d04a069add4f",
+    "crates/horizon-world/src/worldgen/aquifer/noise_based.rs": "74daaa389b5c3dfdc99214dfff256a9e172f83548d2326cbc941d9637cc53fb7",
+    "crates/horizon-world/src/worldgen/aquifer.rs": "cb4b66d87de3f9f79ae6ffe4badd6f0f44886cd42ad9de2771b8b56c4f1e28c7",
+    "crates/horizon-world/src/worldgen/bamboo.rs": "d9b47113c99be34256e58308bc6f40072ff25c579d6bf995182aa862c0006102",
+    "crates/horizon-world/src/worldgen/biome.rs": "3fe316b875aa32683759c337dc71f624910faf0812a2d6d83b8098d6d0bac7a0",
+    "crates/horizon-world/src/worldgen/biome_chunk.rs": "8fdfe6ebe3ffeca97611fd5991a5bc6b2783ea1c62f4d8ef3b2dd53c04a5dc1d",
+    "crates/horizon-world/src/worldgen/biome_predicate.rs": "bfc581bc40077cc74ffda43e990a55fe997adc04c7130f98e039c3305ca79aac",
+    "crates/horizon-world/src/worldgen/biome_source/codec.rs": "2b9e4f5d679eb444cb73174f511e3b9f32e9eb138248ab12cffc6cfd76adf3a8",
+    "crates/horizon-world/src/worldgen/biome_source/runtime.rs": "f0b02c1521178e4d0377c6ca62694604b6a773f1f234f070ff0cde4685911d45",
+    "crates/horizon-world/src/worldgen/biome_source.rs": "e181e1736f3e0b75f7091a24c88de3fd116e01b98424d02382aea7a503d1eb54",
+    "crates/horizon-world/src/worldgen/biome_temperature.rs": "cde4bbab5e260c4065b113376c423b8511ade93c5aa5fd976e245ee8a58b5ad1",
+    "crates/horizon-world/src/worldgen/biome_weather.rs": "96b1f9494559ed31d06257b83d604d00cc069ccc8c7b68094117e034b4a71bd7",
+    "crates/horizon-world/src/worldgen/block_blob.rs": "c608c57b3d77279646ecb89e50677dd8e452b0422ffd357ba755536c5589eb89",
+    "crates/horizon-world/src/worldgen/block_column.rs": "f72c21a9066ee0aa68c2fb79fba436d05afb14c6ef5a2cb012f1ed35fc17cd22",
+    "crates/horizon-world/src/worldgen/block_feature.rs": "36b4e46ee7f7f73bcb94d8bce8d99013e4b16234c9a03542eeb3186e88dd1c21",
+    "crates/horizon-world/src/worldgen/block_pile.rs": "623e369b77e0526ed2756485a6c0bb09683cd28ad8876dea907360ca6665b39d",
+    "crates/horizon-world/src/worldgen/block_predicate.rs": "074c692367e3f2191a1bb28d87b23402430a843c246bd30a4ea838ee3500280e",
+    "crates/horizon-world/src/worldgen/blue_ice.rs": "eedd77bdaff808330b864166d303378096daa5c7d235e925770b171c05109247",
+    "crates/horizon-world/src/worldgen/bonus_chest.rs": "05d0f63fbc7412f13ba1fa37a7238114b8f70bfff318beb2dece590482d49cc0",
+    "crates/horizon-world/src/worldgen/bulk_section.rs": "eecf61532d7793f853884c5a18a7f436a59835c7b13d3ec9075804511553c9ba",
+    "crates/horizon-world/src/worldgen/carver/canyon.rs": "509c4d5a9d689849e98e894ab14a9fbf82d10707d38e9cc688ded3c4778df3e2",
+    "crates/horizon-world/src/worldgen/carver/generation.rs": "a4498d0d1457536de3922a08e9c40ccce8d2ef9cc263801c15a412327513c098",
+    "crates/horizon-world/src/worldgen/carver.rs": "46b251e28225fe1250de38f49dec5dacda4e2c4ba1e556e21e6d1e14e2651fc3",
+    "crates/horizon-world/src/worldgen/carving.rs": "4e77d4e5c4a0ca55ca3563b9bdf6f379342e0bdf9d019d60f7bc57ce4afb5fbd",
+    "crates/horizon-world/src/worldgen/chorus_plant.rs": "29224c164ede919e280a65a68f155c873e2c8fd0aa7d7e244d8fa9e468760250",
+    "crates/horizon-world/src/worldgen/climate/codec.rs": "d567adeb5d837816fca69102db51d790f71aec1b51c09298230d24612e400a14",
+    "crates/horizon-world/src/worldgen/climate/index.rs": "c5ce61679a5f0e0f2f0af2a373424effa124d0cce8250609eff38b7034650756",
+    "crates/horizon-world/src/worldgen/climate.rs": "1b9ad44407f40aee4c1cd5357a5c9c443c1b105728f01cf5c644072f99f8357e",
+    "crates/horizon-world/src/worldgen/decoration.rs": "75a79b20b21e133816e729f16e758be6165d0db18a64bfbd5fd3618325a2adf3",
+    "crates/horizon-world/src/worldgen/delta.rs": "c2bf49ddf3231d28c109e68871429bc13d76a7bebe14eb33e84aa856bdd66145",
+    "crates/horizon-world/src/worldgen/density.rs": "65a98c156a290a6b374ef670d28cd5dfbe0aa93171824d1bbd96422536273f84",
+    "crates/horizon-world/src/worldgen/disk.rs": "6f8f9e059755af44c9bfa1b91eba54a7d13fad811dce31717c5502d7f6df33d7",
+    "crates/horizon-world/src/worldgen/end_gateway.rs": "f53fde77d6a36a525cd15d890003b2c129d0689a4cbfa2cf443a0c2e3acae040",
+    "crates/horizon-world/src/worldgen/end_podium.rs": "8f6d0d6d60ff0fde63de5781e867239db321f82cf12639f0537d410a3731ee1d",
+    "crates/horizon-world/src/worldgen/feature.rs": "40500af71ee6628dfb27518262d99f08d0383ae6c7b9397452feef0c213eadd9",
+    "crates/horizon-world/src/worldgen/feature_catalog.rs": "efc7b17b227e71622ef34108be9abd010f5675b68ea0409fcab82581d9aab88a",
+    "crates/horizon-world/src/worldgen/feature_graph.rs": "da132fca9fdafb0d89a917d5f4b68c60b70fb33cadf948a107da0e35d83dcd91",
+    "crates/horizon-world/src/worldgen/feature_region.rs": "df0ff142a461cafa9a3b42b949ad3376887f2be8d4ea5cc794a3ed2e977bb499",
+    "crates/horizon-world/src/worldgen/feature_sort.rs": "3488a093dfe1321aaa29d8a30cfb115d8e666a81bf195514e87b170de626835c",
+    "crates/horizon-world/src/worldgen/fluid_predicate.rs": "64197c9e63bebf1ce04bc280bfe980bb6c1b9aa887ca5cded904aeb0d9ae6c46",
+    "crates/horizon-world/src/worldgen/height_provider.rs": "368d4dc119854742a045c4a717679c921456da681fc5f71aa9b37102d6f33b47",
+    "crates/horizon-world/src/worldgen/material_condition/codec.rs": "09b909bc384472f76d163c8069ec6b507c7d5c6a028a36d5e0e3df20deff7b3b",
+    "crates/horizon-world/src/worldgen/material_condition/density.rs": "df9d0761e978e5010663ae8b44f2d6c1ecb4907331e333bdb6a2b487c1e107de",
+    "crates/horizon-world/src/worldgen/material_condition/library.rs": "a55534c5da97575a819af5a7dc0dbec9069993fa8b2619c6c9d5576946e683fa",
+    "crates/horizon-world/src/worldgen/material_condition/noise.rs": "ffb59cc6be2275d7a5621bf7d768527e74a8326ed7ad78618746711540921675",
+    "crates/horizon-world/src/worldgen/material_condition/rule.rs": "fed643352efbcb1f68f29b6241896617db889fc7c577a6247564e01922fec1fe",
+    "crates/horizon-world/src/worldgen/material_condition.rs": "d638dcb8cbcb5da20b3cb29602b0ae6a86c4fdf9d8c0fb725de8ec5fc108717e",
+    "crates/horizon-world/src/worldgen/material_extensions.rs": "ab806eb679d5116e1aebb64fca70e1499ae71f83c9507a8cb4c3201c2b1bf037",
+    "crates/horizon-world/src/worldgen/material_stage.rs": "698cbc786eff13c246e2bc2ea062401918cd4265899fbc3d53abc87e45a8e7a1",
+    "crates/horizon-world/src/worldgen/material_surface.rs": "5d37b90099df3d6da0845dab164e71469fb287019c2ee74bc6714f3b9d6d6d5b",
+    "crates/horizon-world/src/worldgen/ore_feature.rs": "83b89fd3be691c5412c0215b6abefdcaa44119a05aa41217e061970eb7e12ebd",
+    "crates/horizon-world/src/worldgen/placement/chain.rs": "9218399b4d3757f7bbc550d7729a7201f32a1c83a7030865e0c12aab8a80d116",
+    "crates/horizon-world/src/worldgen/placement/context.rs": "a278304795136677ad4b4933ea50c972b9729a1c671c03fa309c193e224b1fd6",
+    "crates/horizon-world/src/worldgen/placement/layer.rs": "a0f5ca776f33f9d4f72b8fdcd163426152e5e43cb4a7572fc1d4fc57bf965de1",
+    "crates/horizon-world/src/worldgen/placement.rs": "b0397e5818fae84358546193a95f84bcb0b5bffafce909e6fcb3386179ee8023",
+    "crates/horizon-world/src/worldgen/replace_blobs.rs": "bf3377d86d2570cd15288ba69dde64a2cf67c5bcbb9a31d0c23421964af74afa",
+    "crates/horizon-world/src/worldgen/router.rs": "2cee7cf15a0d2ada12be6b39d83e78177fd3033922e4f4cce87a64073cec2847",
+    "crates/horizon-world/src/worldgen/rule_test.rs": "d1662ec492489ebaa4b87e20f9a8c809dcf3a223a151211bd65ec241a63692fc",
+    "crates/horizon-world/src/worldgen/settings.rs": "a8fe87752e1982ef11cb67f8d80d8e3428b2c27db178044cb425ba803e689e59",
+    "crates/horizon-world/src/worldgen/simple_block.rs": "9ba1a88d5db4925f8c37366557887f776c805f9a6444781615b5dbaff52e92a4",
+    "crates/horizon-world/src/worldgen/snow_freeze.rs": "9040be3d5c7f8f0fd812d2df45e154bf8a9eeef038530b83fa4159d246eac35f",
+    "crates/horizon-world/src/worldgen/speleothem.rs": "c71651c1c97818a8a85863e14414d6139ea3bdeb897fa422043bcc1499d99aae",
+    "crates/horizon-world/src/worldgen/spike.rs": "eacf0d9d3d2bc3d4bcf62bc87555f90031138236a5bfef0eb5270204f7c2a4fc",
+    "crates/horizon-world/src/worldgen/spring.rs": "830849e9b89fcdf09e9b06fbefdcdebe3c8c3f82804f60b8bd5de04ba303cb62",
+    "crates/horizon-world/src/worldgen/state_provider/catalog.rs": "c8687e15a4887a9200c8d365857d801efaa8f90e669eee3e600a1db4905119eb",
+    "crates/horizon-world/src/worldgen/state_provider/noise.rs": "7ee369c2a032e5620cb9bdf9ee7adad1f70870fb0a27efb7b7c514d92f83491f",
+    "crates/horizon-world/src/worldgen/state_provider/properties.rs": "9909139aaca1dc4f743957257fadaa9d423d21fa401fa9abc050505f79365139",
+    "crates/horizon-world/src/worldgen/state_provider.rs": "be29ada818826a90afe01ab60916360fdfc4cbde5af15c9359cd56b1f1f7b156",
+    "crates/horizon-world/src/worldgen/tags.rs": "d35ded93fe6e95ea045cadcf4925e656dc34ef832b742179b9ad0cc49f902f31",
+    "crates/horizon-world/src/worldgen/terrain.rs": "fd1f2e0afc15daf66f484ea40a1f2b7013650bda0941b23c64c81ee9f79cb673",
+    "crates/horizon-world/src/worldgen/underwater_magma.rs": "7317e40af5ee5a9780f90ce358fa5d3e7f5b3d513b731df6ff97754d9c2a0154",
+    "crates/horizon-world/src/worldgen/value_provider.rs": "3358b563db8cb0bc8a9cfbbe2b8b3e70941cd2d37a0b519fbb6545f8d0dcbb69",
+    "crates/horizon-world/src/worldgen/vines.rs": "ee9b79b65012bd86a838241d2ef708680f7fe8eafc8aa656dae9cf2abf3c6418",
+    "crates/horizon-world/src/worldgen/weighted.rs": "839840aae25302933bbd97a81a2336330e2d03a0ad1684e1e16ac769ed408e6b",
+    "crates/horizon-world/src/worldgen/write_zone.rs": "8e17a179764d3f68c05882aef35f6810c28a0000f9a83e58bd6030660b76e64e",
+    "crates/horizon-world/src/worldgen.rs": "e8e9f099ee1fcec8eedce31805d676d3f89c18e84f494a147ffcbfee23d3d54f"
+  },
+  "fixtures_sha256": {
+    ".local/rust-world-collision-check-parity/inputs.txt": "210f1473983831ae93949eae6f5eae01ace1c729c46125e44f76143d23fa49ff",
+    ".local/rust-world-collision-check-parity/facts.json": "5e89a805514cabfe46e082d651db406b9479781e1d97b65faa2ab9f6f871309b",
+    ".local/rust-world-collision-check-parity/definitions.json": "9cac3c650353104db1648050621057bfe104dec1f44b53d0b7875f7bc20e6eec",
+    ".local/rust-world-collision-check-parity/block-registry.nbt": "5042073c80753f9548cb8fdb5b1000f0e5a1220127a0cc3c6a75737e180bf9bb",
+    ".local/rust-world-collision-check-parity/cached-collision.nbt": "4a274cd720a1bda585b02f50f16e90246576679e1e173c214548c5cbf607ab2d",
+    ".local/rust-world-collision-check-parity/tags.json": "5e1301e5a9abf7e4de93af5dae3a157e852dbdb4ea345c2eb626305a605d4f98"
+  },
+  "rust_output_sha256": "fadc86b51a80004c49117311fbe87d2d44405681ceb26bf71593784261ff214c",
+  "references": [
+    {
+      "side": "client",
+      "jar_sha256": "4508d006323f24fa02876310c192d739af56516eb259000ac50f0909a68c9a2d",
+      "output_sha256": "fadc86b51a80004c49117311fbe87d2d44405681ceb26bf71593784261ff214c",
+      "matched_output_lines": 4793095
+    },
+    {
+      "side": "server",
+      "jar_sha256": "a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6",
+      "output_sha256": "fadc86b51a80004c49117311fbe87d2d44405681ceb26bf71593784261ff214c",
+      "matched_output_lines": 4793095
+    }
+  ],
+  "scope": "Actual native CollisionGetter.noCollision for an entity executes lazy BlockCollisions over registered blocks and resident ProtoChunk sections, then entity list and applicable border shape checks. Rust uses the registry-bound TerrainChunk scan in the same short-circuit order. All registered states, controlled context variants, degenerate entity shapes, empty/disjoint borders, missing chunks, chunk/height boundaries and failures are compared. Entity list contents and border applicability/shapes are controlled; null-entity overloads, live entity indexing, experimental minecarts and player ledge behavior remain separate work."
+}
diff --git a/benchmarks/rust-free-space-2026-10-07/scoped-parity.json b/benchmarks/rust-free-space-2026-10-07/scoped-parity.json
new file mode 100644
index 000000000..2d901545f
--- /dev/null
+++ b/benchmarks/rust-free-space-2026-10-07/scoped-parity.json
@@ -0,0 +1,254 @@
+{
+  "schema": 1,
+  "minecraft": "26.3",
+  "manifest_sha1": "4fe1aa1ef8da1cb95c5bad1fb98890ca56dd8ca3",
+  "platform": "Linux-7.0.0-31-generic-x86_64-with-glibc2.43",
+  "java": "openjdk 25.0.4.1 2026-08-18",
+  "rustc": "rustc 1.99.0 (b940084d7 2026-09-28)",
+  "registry_states": 35723,
+  "block_definitions": 1286,
+  "definition_counts": {
+    "tagged_full": 1221,
+    "never": 42,
+    "closed_shulker": 17,
+    "always": 4,
+    "not_extended": 2
+  },
+  "native_chunk_storage": "ProtoChunk",
+  "rust_chunk_storage": "TerrainChunk",
+  "fixtures": 83630,
+  "sources_sha256": {
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java": "61c320ce05a96cc0f4bf7a1526cb51a912e03bc64d8423f2dfd70513ce4f00a0",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaHeightmapOracle.java": "145c943637ed177cc4ef8a85f2484da8afd164868e84a8463882feec1653a860",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaCollisionOracle.java": "f2b4f440a5bbce4224a4b3cee494b0f7ddcafbf72db12592c94ef9fb94fbc8a6",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaBlockStateCodecOracle.java": "5c217a8cb72094020082bd4846ed675a6399b9fa371be95a221bd92d227b2e09",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaSuffocationOracle.java": "8dd870e65807bac4234085958830321061f0a3805dcf2b1219514107ba710503",
+    "mods/horizon/src/test/java/dev/horizonlab/parity/VanillaFaceSupportOracle.java": "9ce939a435842867786fed648951bbe77f6ab843f6df09af15f3deb1948c4877",
+    "tools/test_free_space_parity.py": "76ae9d58af21ff174c04d9c893c24a2389d3432cf420c207870043052fb83311",
+    "tools/test_rust_parity.py": "29d3db08005873528894b45ca10dcd6278753650473b3eb574e53e06ede40ec6",
+    "tools/test_worldgen_parity.py": "b40972ab2ad222aa6d77537cc36b434a217baa1f1b56bbaad945d6e12fe776af",
+    "tools/lab.py": "d00bf107fa01b6c579734a082c3ca4ade3018f0d6851d46844acf17574f66e64",
+    "Cargo.toml": "3f93319c1eb70dbd7ba25cd74ef343fbf35c52c7c4752f955605c58699cbff9d",
+    "Cargo.lock": "cb1e87d449114a63edd904c0559d631e8fa9feeb27efd6539aacdcfeae178876",
+    "crates/horizon-world/examples/registry_collision_scan_fixture.rs": "e35aed3ae18c08c31f35ec0e9f8cfe6691dea587b587c95725610d9aa48b7daa",
+    "crates/horizon-core/Cargo.toml": "e21b502c949da93cf67826592459b687a8cbf737ef92fee514e3ed2cc7cd27ad",
+    "crates/horizon-core/src/bin/density_parity.rs": "e5b1dd33b7d01306c73cf072629b4fb186e9ab87b672a00108999d1a72263fd0",
+    "crates/horizon-core/src/bin/float_log_parity.rs": "4a655fcf8822ee7668c4bd126bc84d0b118864a6fc7f5a6aeee667d8bf2590b1",
+    "crates/horizon-core/src/bin/geometry_parity.rs": "27f6c09fe5018ac3de8e70e0f0bbf78f9abb14f5e4783bcaf46e8ca87b9c6f8a",
+    "crates/horizon-core/src/bin/noise_parity.rs": "c135bfc708d853e7061e81487d2cfe10de64b2f65677d3b4837cbfe0b8341010",
+    "crates/horizon-core/src/bin/parity.rs": "f35d928c66f958de39fac5e7e836a657eed95f83599e84899f7ea7a5802ba481",
+    "crates/horizon-core/src/bin/tick_parity.rs": "a54c164fe4814034d369947a887f5273966f5a878ba849204b80d1c729526a8f",
+    "crates/horizon-core/src/biome/seed_hash.rs": "5afbb4921c750826b395a08bf06f382fc7f01b5759a93de02a2749c523e2a317",
+    "crates/horizon-core/src/biome.rs": "908efa8cd4aa0a7adf1cb5e1a222e3dfb640eed5e9172e0fe7f0d1287afae7e8",
+    "crates/horizon-core/src/carving/ellipsoid.rs": "09232a7588610e8a9176fd9c62d40afb1fb89f2ecab6d555536a1d847b142d86",
+    "crates/horizon-core/src/carving.rs": "0aa3093caa0437868a8c0ed52a6c6e1993bd51c03583c670a2837e749eae5426",
+    "crates/horizon-core/src/density/arithmetic.rs": "372faec96c923e2cf4aa6c66c1ac398e676853274557823850dbc8933dd15ab1",
+    "crates/horizon-core/src/density/beardifier.rs": "bb1052e27dae4a01954ca78d7d5babafef85f3b2c704ccaf1920cb85a098cb50",
+    "crates/horizon-core/src/density/cache.rs": "38d0b6c9dd04ffef979fdad3f29cfebf98d331c8c9d430be5f39aa34f6c30975",
+    "crates/horizon-core/src/density/end_islands.rs": "168b9384237bd2e41d0ae5a74e944da4dc74e493bdec31fb73184c9a49e3de55",
+    "crates/horizon-core/src/density/graph/compiler.rs": "ac67deeb16f16d0859aa20e5a165811a29aca0b910037ee6bf5098211f3a6ede",
+    "crates/horizon-core/src/density/graph/mod.rs": "b776e7da934cb03051a3053d56d461c71e9978e084922fe4194147aa580c07bf",
+    "crates/horizon-core/src/density/graph/seeded.rs": "6bcdcaa3dffcfa9df673bbbea35120057a16ba3d2b506c52709c36cf8976b74a",
+    "crates/horizon-core/src/density/graph/tests.rs": "6bfb8cbff462587dd147b0775ea01d370abbd97544b9bd596c792df1b5f7e634",
+    "crates/horizon-core/src/density/interpolation.rs": "8c890f52b6467f38a94c654986a6a484b8e0b296ab98c398e60a6ce465b5b010",
+    "crates/horizon-core/src/density/interval.rs": "b42629163baa6b599a233afe8596d1c370cd81d015cc6fc36a9663aa47b98424",
+    "crates/horizon-core/src/density/mod.rs": "ca0d77d3282e3746ddcbc92bee97dbf640b9a56214e6ac1537f51f9a5b63d6e7",
+    "crates/horizon-core/src/density/power.rs": "d5b7270a128d4264268cd772109ad16d71a8ec3ff2d3b63b84cb985296d54a91",
+    "crates/horizon-core/src/density/rounding.rs": "71840c5206ff8d218ac29bf6f66915d5212764ba270c675711a866ba5b55a7a6",
+    "crates/horizon-core/src/density/selection.rs": "0dd26af2e85004ec5e053039ad11c384c17c56ace9ab45eb3f5cb3503c0b0330",
+    "crates/horizon-core/src/density/slice.rs": "5d77605573c0deda47778f1f78f7fa3fbf1944d8f5efbcc65cf589181cadf80b",
+    "crates/horizon-core/src/density/spline.rs": "6bb2e40f940fc6544d6fb09cb0b8cac722be03bc663dbdfb0f61faae207400bc",
+    "crates/horizon-core/src/density/surface.rs": "159e0e69cda74f870e80ea64fe523c4397e64af4ccb861bb9fd07b2c3cb91b00",
+    "crates/horizon-core/src/density/terrain_noise.rs": "8d0059d25eb5d248cb97a4c5a2e670d61528928ea151495c004f25adb723fe3e",
+    "crates/horizon-core/src/density/tests.rs": "7817796ee40d0ae241bfbebec6bca190e0a8e7d5a1caa8ddf858c3eaa58b8858",
+    "crates/horizon-core/src/density/world_fields.rs": "c1ce305cb8046b384d90c564cafb24af7365d580389637910f3d8b0cc18eb583",
+    "crates/horizon-core/src/geometry/border.rs": "1386f8080521231d05ba3e84d94a3e1d5218d35ccb3d5e9fe2bbb05a8739e573",
+    "crates/horizon-core/src/geometry/mod.rs": "c650386f9860e44a96c55f18c8f1428ca715fcb0bc5c2434db5b1caa43df27fe",
+    "crates/horizon-core/src/geometry/movement.rs": "bcfb452752940ce53ae6dc267a3c4eb29459046a063c1f884684ab4f4bd0068f",
+    "crates/horizon-core/src/geometry/shape/create.rs": "189812b91d5e0e3ad963afcd1a6e2831b31b8188df91a904ef27061e644806ad",
+    "crates/horizon-core/src/geometry/shape/face.rs": "f243bce81384040a95ce7984b02b5699206c596c537b2713097e86005b4d3a5c",
+    "crates/horizon-core/src/geometry/shape/join.rs": "f1b51887b7bf9482557e3ffa99e136f2e5db07ceeb05fdb116adf45e87129075",
+    "crates/horizon-core/src/geometry/shape.rs": "e8d88a763de1525f77a30b99591641e8a8b80946263acbde035a9bcc356df960",
+    "crates/horizon-core/src/geometry/sweep.rs": "abd6009c61555161ef2f18b431b2aa384b126c0871cae8b96a62358498a56a1d",
+    "crates/horizon-core/src/geometry/traversal.rs": "77a3da570a0b85582b669cf4d841cba4b06327006dda26d4a26df4e8ce05bae4",
+    "crates/horizon-core/src/geometry/trig.rs": "05cef9341a298a474221a0556a11ddf47650393ea7a97b4b2022a4da6628fe37",
+    "crates/horizon-core/src/lib.rs": "4255e16837fde42a52ba118f60581d197c571bb530b60d635e506184ebf4db0b",
+    "crates/horizon-core/src/noise/mod.rs": "1dab5a713abf702402e69ace1bf9e476bba544b0ede5a61c3c3afc60af0a03f3",
+    "crates/horizon-core/src/noise/normal.rs": "e9e7a46472a54a02c98c46da819842090567153b32fe0c84249009ef19af7aad",
+    "crates/horizon-core/src/noise/perlin.rs": "e73815447432eab7542f67366cb3f1b368d164e33f6c9cdbd045ac8e4db0932a",
+    "crates/horizon-core/src/noise/simplex.rs": "6c0dbc15b2b7510195dd28fceca01dcaac1847ccc4a84d299c351589c642fe7a",
+    "crates/horizon-core/src/noise/stack.rs": "7f6ef0e7d920139ef1a6ad3ec5640f92765715f86dcc5ec29f1a149984f45fa3",
+    "crates/horizon-core/src/noise/volume.rs": "3f05d2b1780acfdfee60037677d309937a5033b45ef428fc2d540942d4b56b43",
+    "crates/horizon-core/src/position/iter.rs": "32d2d8e74821cc4e49e3354202d35d3120e4415bfdda9375a73f2137ef651129",
+    "crates/horizon-core/src/position.rs": "e10101088e6902386b9b6d27773d44312f1ff72bebb19e57967a54945dde9dcd",
+    "crates/horizon-core/src/random/hash.rs": "0f88a127a1ba2705d3d6c0ebd009324d6ba86ffa2d27edf2d2a84765e690e4a3",
+    "crates/horizon-core/src/random/positional.rs": "35494745e5d4cf89e282c3ae0ee245e9f2640ddbbc03bc0055df742006a9c862",
+    "crates/horizon-core/src/random/worldgen.rs": "9f07ff33bcc038d34e27aa5465753bb21df18f2975e43cae201f709bc186945a",
+    "crates/horizon-core/src/random.rs": "ddb95d3a83e28ad605ff1f49f5df270cc543ca5ef1130e37d989dc74c8d861e6",
+    "crates/horizon-core/src/storage.rs": "f6c32201c64aefde06e57a2c767be46918df613548a322801546b133799cc33d",
+    "crates/horizon-core/src/text.rs": "e6553ddb5db5039e8dc4614b6a6dc9f35a26dc3d1673b68a04e72e7983b67abb",
+    "crates/horizon-core/src/ticks/generation.rs": "be1237e790693f633a61714ddae68c6506a777588a8a3ab5efbe53a35774dbd2",
+    "crates/horizon-core/src/ticks/heap.rs": "bf28afab8af77c3d243aa96cd8a1fb8d934140a4dbd07dbfdbf4e7908bb4b845",
+    "crates/horizon-core/src/ticks/index.rs": "1f1a6a568c2a30eafecb020ca4d5f5fc414860de85b8b381fc419a2e3e65c24a",
+    "crates/horizon-core/src/ticks/mod.rs": "01634630668172516b8b79d0907bad47f6e2c543a6d499c2fa4b201823b375cb",
+    "crates/horizon-world/Cargo.toml": "977338bf3e654193685b015d383493b9f59ff6f5d6210bec212cef8ac4a50bed",
+    "crates/horizon-world/src/bin/worldgen_parity.rs": "3143ceb9b56eecfd7667e5feb5f9f0cd13cfb8754b38d4ea338dbba97f2819da",
+    "crates/horizon-world/src/block_collision.rs": "39207247f2f6dd3ddc77640229044246f91b32054563f88a435f1bd92ad2092c",
+    "crates/horizon-world/src/block_collision_scan.rs": "20802862364c110ff85eeaf48606596a8468b83768dda46b412d337958790b41",
+    "crates/horizon-world/src/block_entities.rs": "a9deae92e6e5a1fcf4f0476c33ea4d170ddad6fd4b3303e1bb66d933973d5e06",
+    "crates/horizon-world/src/block_entity_push.rs": "12ee91bf604946234b24a0da4333f07d1830ab9743a422d41c8d0afac7d49cfd",
+    "crates/horizon-world/src/block_landing.rs": "33083fe39266fbefec1b3ea1a19f2afc609791d189da247c895e116ad6eb266a",
+    "crates/horizon-world/src/block_placement.rs": "524f4892d50bab77b7d89d19f7b048ffe746996f2ed7f376db2c6ab00ed75c24",
+    "crates/horizon-world/src/block_properties.rs": "b0bd8a983336c48e488a20caa77dd5c39b1a74bbd14ebc03b3b64556a1c864fc",
+    "crates/horizon-world/src/block_render.rs": "8df52ee11aef406a1571198a64048062a0ef6864e0058d9293a57f64b73c916a",
+    "crates/horizon-world/src/block_support.rs": "ade4fbd47284b450dabdd682dc86138b2ac05a0fd379525d7110648908245476",
+    "crates/horizon-world/src/block_survival.rs": "28ce64375e09819a4f13da9cfbe37c08b5ad0daf01b289c1c360b4567e50e811",
+    "crates/horizon-world/src/chunk.rs": "795895284d6e615bcb2082fceacdfe7025c152fb2934bb43f598f17a00ab46f1",
+    "crates/horizon-world/src/chunk_status.rs": "dbb8583cfa775203c544d24d69e03720385428f15a267a561356c21f5025e9c7",
+    "crates/horizon-world/src/climbing.rs": "6cd2f919872ff0b726effddaa57eccb805b8eae43f9d01144716010853891879",
+    "crates/horizon-world/src/collision.rs": "a749794d5c27ccd6c0d964ad02f9dc31d49d9f4fe4b7366cd4bd8155e681b00b",
+    "crates/horizon-world/src/collision_context.rs": "2176c7034e07f547510a8327cdad9d3b63f26e4754032b76b7d5fe13166c333c",
+    "crates/horizon-world/src/compression.rs": "4db73e6ca9a0d552d415ce60e7e88b89c9cf2b7d060a669ff8328f518316e101",
+    "crates/horizon-world/src/dynamic_support.rs": "5996bc1c436fb6215d8fc3d0bb4de5dd9b966d842d432580d624195771697fb8",
+    "crates/horizon-world/src/edge_backoff.rs": "5259d7aa44e64f88351d1556c44dd0edcad3b400a099c659755792efba7b5773",
+    "crates/horizon-world/src/entity_collision.rs": "09f2fd7f6cd56fc282f468ecfa765a94506929e9684bd3a5c90123e5b51cd627",
+    "crates/horizon-world/src/entity_move.rs": "a40a50d3e841625a75d4cfbb7c2630ab5a62a574456567e7234f401ae8441b32",
+    "crates/horizon-world/src/entity_obstruction.rs": "a4b28a19bf83b23611c59d94535c488db37e4aee24b22c973c545910894a809f",
+    "crates/horizon-world/src/fall_damage.rs": "8c28e2933493569fe05dea22332024287d28b0746b514dd465681040b003296b",
+    "crates/horizon-world/src/fluid.rs": "a0a1f34ba94d8b59dc975becee8952960764d67ae08cf2d6a8bcd40a614b15c4",
+    "crates/horizon-world/src/fluid_occupancy.rs": "26037579caeef6c8a5a2bde2c3d142d278558b76d77ebff401cee6e35f2ea961",
+    "crates/horizon-world/src/fluid_shape.rs": "28bb65a72f5bd074a354ba38a1b1707fcb0947537977a11540bba0adb85995c2",
+    "crates/horizon-world/src/free_space.rs": "913536bf4c85ddeeb378d76d1b5110b4175f5688e1a749f32fe6a6d86fbb478e",
+    "crates/horizon-world/src/ground_support.rs": "3e371d74ecede4d30beef0a7e8a2ee33463584a5b1ed3d852b394efcce1ffbe0",
+    "crates/horizon-world/src/heightmap.rs": "a5edef082b5af40d814421ea17e129b3b06d70abee6434ed263e4bba58571698",
+    "crates/horizon-world/src/interaction_shapes.rs": "f321284ddab440a394372b6dedc8b5cc29a653c0745251a9e96c650f21c33dea",
+    "crates/horizon-world/src/lib.rs": "302223c3742241915db90aa99a8c0c440871907dbcf9a40166b72dac33a37554",
+    "crates/horizon-world/src/liquid_collision.rs": "0f0a83b04e5a5bc9d98ed05fde4d6584ba69642e93522e726e4cfc325d6fcb1d",
+    "crates/horizon-world/src/living_air.rs": "b2de36bb50bed15e2808fe4a874fcef07f9fea0d2c96385b7b5e8ee9560d4442",
+    "crates/horizon-world/src/living_fall.rs": "da0f176f4731e1c86e08bfeee8167742fd1b86380ff0e9304c13c1ce3f1c67ab",
+    "crates/horizon-world/src/living_fluid.rs": "d7cd914cfb2a1f4876ce0ae95e999bf0ff1af732cce3ab4a3aa2d1ab881c7339",
+    "crates/horizon-world/src/living_landing.rs": "8bca4eb7977abc2b14fb7174be4ea355352106ea1e76ff5f3ad8696969d9eefd",
+    "crates/horizon-world/src/living_motion.rs": "56f8c84cfbe205a7a69912d5f76b52ef1efca149c1b6801d4684e25fb179aeb9",
+    "crates/horizon-world/src/main.rs": "fce57418b8c22a6a0a9044baa89ed3d9c243bc2e8413fea3ff0f32985daba021",
+    "crates/horizon-world/src/movement_emission.rs": "76e7d6f5b19c94676190f54389f9c4ce12cf89945ccfcb9c750de473223e7753",
+    "crates/horizon-world/src/movement_properties.rs": "6f01ab920b376a13f5ae12c3718f4dd067e1dff2b829585af00a8b2100f3775d",
+    "crates/horizon-world/src/movement_restitution.rs": "04b4fe0947e7e52576145bd8ed15920278e8a538afcc74d125eaca513dffa0ef",
+    "crates/horizon-world/src/movement_support.rs": "02d85cf572847f2e60b5a7f9d60b856888a67b3c1f4df03e81998c66fdf874be",
+    "crates/horizon-world/src/nbt.rs": "60262c3de8c8f68bc2da0370ccb17393d32b85f5f5022c6358599a7d32119ea6",
+    "crates/horizon-world/src/piston_movement.rs": "7a3fd2549a582b5f3a5c21aa05d67d944d62ca1105856679e100ac5b44e9a52f",
+    "crates/horizon-world/src/piston_shape.rs": "399c2337103b8e7e0eb5667227c5aa14f9549d6a467b7be7da3d0717f0263500",
+    "crates/horizon-world/src/player_travel.rs": "6841a677a900495eb6223031ef3ebe8d859bb98908dda0e2209e5f28839dc593",
+    "crates/horizon-world/src/powder_snow_collision.rs": "7289946a21478d11abfd2bdcdddff3d7f98e25bf6a68564fed45c3cc01ac2a36",
+    "crates/horizon-world/src/region.rs": "72b642e87fed37ed17f54d4c30f96c3b64d26c14bc0589c31ef40ff1616188fc",
+    "crates/horizon-world/src/registry/json.rs": "7a683afcd1742c5307756927d7f0aa779c7d7992af87d8d371dd98108728e235",
+    "crates/horizon-world/src/registry.rs": "f2e58b2b4d944ac8fc6226bd3352cefc3d2052d8473e02ccf7dc402b176df435",
+    "crates/horizon-world/src/registry_collision_scan.rs": "97cc950a9a4ba387b78e368f36d595f8664ab7730d132900d220ce23b92826ea",
+    "crates/horizon-world/src/registry_fall_ray.rs": "52935436132df505691144840dcbd858b15d00d8305997284e3a542ecf6bc0dc",
+    "crates/horizon-world/src/retrogen.rs": "6efd36a6293756688c1990a7965bd65609d7c5e2bf2a5f4f01d54932d2b9386b",
+    "crates/horizon-world/src/suffocation.rs": "bed219dd5bbab6263b98fbe3d0eb512cb96c52ae847210efe49514d05f22f11e",
+    "crates/horizon-world/src/tick_data.rs": "f8d04a69ea263f4168bce33f92e5b4ee2fe07d7caf50a1621c6b3ef6eb2479f3",
+    "crates/horizon-world/src/world_movement.rs": "f8fe9e34f2395d2a04c839d1c8ba78e09ce493c26de6f6e4e237b9c19c061da5",
+    "crates/horizon-world/src/world_ray.rs": "879bdbbe12f56deb705cc183933431489e840b71eade40c33391eed5949c2e61",
+    "crates/horizon-world/src/worldgen/anchor.rs": "d156b8a0b147a274cdd143409b441f4f43edecde6e8ee14ef9cf0309f743143a",
+    "crates/horizon-world/src/worldgen/aquifer/config.rs": "fcd2cc3a520c1527c88f095a3b5d38487e7ebb1ccecc5f757f93d04a069add4f",
+    "crates/horizon-world/src/worldgen/aquifer/noise_based.rs": "74daaa389b5c3dfdc99214dfff256a9e172f83548d2326cbc941d9637cc53fb7",
+    "crates/horizon-world/src/worldgen/aquifer.rs": "cb4b66d87de3f9f79ae6ffe4badd6f0f44886cd42ad9de2771b8b56c4f1e28c7",
+    "crates/horizon-world/src/worldgen/bamboo.rs": "d9b47113c99be34256e58308bc6f40072ff25c579d6bf995182aa862c0006102",
+    "crates/horizon-world/src/worldgen/biome.rs": "3fe316b875aa32683759c337dc71f624910faf0812a2d6d83b8098d6d0bac7a0",
+    "crates/horizon-world/src/worldgen/biome_chunk.rs": "8fdfe6ebe3ffeca97611fd5991a5bc6b2783ea1c62f4d8ef3b2dd53c04a5dc1d",
+    "crates/horizon-world/src/worldgen/biome_predicate.rs": "bfc581bc40077cc74ffda43e990a55fe997adc04c7130f98e039c3305ca79aac",
+    "crates/horizon-world/src/worldgen/biome_source/codec.rs": "2b9e4f5d679eb444cb73174f511e3b9f32e9eb138248ab12cffc6cfd76adf3a8",
+    "crates/horizon-world/src/worldgen/biome_source/runtime.rs": "f0b02c1521178e4d0377c6ca62694604b6a773f1f234f070ff0cde4685911d45",
+    "crates/horizon-world/src/worldgen/biome_source.rs": "e181e1736f3e0b75f7091a24c88de3fd116e01b98424d02382aea7a503d1eb54",
+    "crates/horizon-world/src/worldgen/biome_temperature.rs": "cde4bbab5e260c4065b113376c423b8511ade93c5aa5fd976e245ee8a58b5ad1",
+    "crates/horizon-world/src/worldgen/biome_weather.rs": "96b1f9494559ed31d06257b83d604d00cc069ccc8c7b68094117e034b4a71bd7",
+    "crates/horizon-world/src/worldgen/block_blob.rs": "c608c57b3d77279646ecb89e50677dd8e452b0422ffd357ba755536c5589eb89",
+    "crates/horizon-world/src/worldgen/block_column.rs": "f72c21a9066ee0aa68c2fb79fba436d05afb14c6ef5a2cb012f1ed35fc17cd22",
+    "crates/horizon-world/src/worldgen/block_feature.rs": "36b4e46ee7f7f73bcb94d8bce8d99013e4b16234c9a03542eeb3186e88dd1c21",
+    "crates/horizon-world/src/worldgen/block_pile.rs": "623e369b77e0526ed2756485a6c0bb09683cd28ad8876dea907360ca6665b39d",
+    "crates/horizon-world/src/worldgen/block_predicate.rs": "074c692367e3f2191a1bb28d87b23402430a843c246bd30a4ea838ee3500280e",
+    "crates/horizon-world/src/worldgen/blue_ice.rs": "eedd77bdaff808330b864166d303378096daa5c7d235e925770b171c05109247",
+    "crates/horizon-world/src/worldgen/bonus_chest.rs": "05d0f63fbc7412f13ba1fa37a7238114b8f70bfff318beb2dece590482d49cc0",
+    "crates/horizon-world/src/worldgen/bulk_section.rs": "eecf61532d7793f853884c5a18a7f436a59835c7b13d3ec9075804511553c9ba",
+    "crates/horizon-world/src/worldgen/carver/canyon.rs": "509c4d5a9d689849e98e894ab14a9fbf82d10707d38e9cc688ded3c4778df3e2",
+    "crates/horizon-world/src/worldgen/carver/generation.rs": "a4498d0d1457536de3922a08e9c40ccce8d2ef9cc263801c15a412327513c098",
+    "crates/horizon-world/src/worldgen/carver.rs": "46b251e28225fe1250de38f49dec5dacda4e2c4ba1e556e21e6d1e14e2651fc3",
+    "crates/horizon-world/src/worldgen/carving.rs": "4e77d4e5c4a0ca55ca3563b9bdf6f379342e0bdf9d019d60f7bc57ce4afb5fbd",
+    "crates/horizon-world/src/worldgen/chorus_plant.rs": "29224c164ede919e280a65a68f155c873e2c8fd0aa7d7e244d8fa9e468760250",
+    "crates/horizon-world/src/worldgen/climate/codec.rs": "d567adeb5d837816fca69102db51d790f71aec1b51c09298230d24612e400a14",
+    "crates/horizon-world/src/worldgen/climate/index.rs": "c5ce61679a5f0e0f2f0af2a373424effa124d0cce8250609eff38b7034650756",
+    "crates/horizon-world/src/worldgen/climate.rs": "1b9ad44407f40aee4c1cd5357a5c9c443c1b105728f01cf5c644072f99f8357e",
+    "crates/horizon-world/src/worldgen/decoration.rs": "75a79b20b21e133816e729f16e758be6165d0db18a64bfbd5fd3618325a2adf3",
+    "crates/horizon-world/src/worldgen/delta.rs": "c2bf49ddf3231d28c109e68871429bc13d76a7bebe14eb33e84aa856bdd66145",
+    "crates/horizon-world/src/worldgen/density.rs": "65a98c156a290a6b374ef670d28cd5dfbe0aa93171824d1bbd96422536273f84",
+    "crates/horizon-world/src/worldgen/disk.rs": "6f8f9e059755af44c9bfa1b91eba54a7d13fad811dce31717c5502d7f6df33d7",
+    "crates/horizon-world/src/worldgen/end_gateway.rs": "f53fde77d6a36a525cd15d890003b2c129d0689a4cbfa2cf443a0c2e3acae040",
+    "crates/horizon-world/src/worldgen/end_podium.rs": "8f6d0d6d60ff0fde63de5781e867239db321f82cf12639f0537d410a3731ee1d",
+    "crates/horizon-world/src/worldgen/feature.rs": "40500af71ee6628dfb27518262d99f08d0383ae6c7b9397452feef0c213eadd9",
+    "crates/horizon-world/src/worldgen/feature_catalog.rs": "efc7b17b227e71622ef34108be9abd010f5675b68ea0409fcab82581d9aab88a",
+    "crates/horizon-world/src/worldgen/feature_graph.rs": "da132fca9fdafb0d89a917d5f4b68c60b70fb33cadf948a107da0e35d83dcd91",
+    "crates/horizon-world/src/worldgen/feature_region.rs": "df0ff142a461cafa9a3b42b949ad3376887f2be8d4ea5cc794a3ed2e977bb499",
+    "crates/horizon-world/src/worldgen/feature_sort.rs": "3488a093dfe1321aaa29d8a30cfb115d8e666a81bf195514e87b170de626835c",
+    "crates/horizon-world/src/worldgen/fluid_predicate.rs": "64197c9e63bebf1ce04bc280bfe980bb6c1b9aa887ca5cded904aeb0d9ae6c46",
+    "crates/horizon-world/src/worldgen/height_provider.rs": "368d4dc119854742a045c4a717679c921456da681fc5f71aa9b37102d6f33b47",
+    "crates/horizon-world/src/worldgen/material_condition/codec.rs": "09b909bc384472f76d163c8069ec6b507c7d5c6a028a36d5e0e3df20deff7b3b",
+    "crates/horizon-world/src/worldgen/material_condition/density.rs": "df9d0761e978e5010663ae8b44f2d6c1ecb4907331e333bdb6a2b487c1e107de",
+    "crates/horizon-world/src/worldgen/material_condition/library.rs": "a55534c5da97575a819af5a7dc0dbec9069993fa8b2619c6c9d5576946e683fa",
+    "crates/horizon-world/src/worldgen/material_condition/noise.rs": "ffb59cc6be2275d7a5621bf7d768527e74a8326ed7ad78618746711540921675",
+    "crates/horizon-world/src/worldgen/material_condition/rule.rs": "fed643352efbcb1f68f29b6241896617db889fc7c577a6247564e01922fec1fe",
+    "crates/horizon-world/src/worldgen/material_condition.rs": "d638dcb8cbcb5da20b3cb29602b0ae6a86c4fdf9d8c0fb725de8ec5fc108717e",
+    "crates/horizon-world/src/worldgen/material_extensions.rs": "ab806eb679d5116e1aebb64fca70e1499ae71f83c9507a8cb4c3201c2b1bf037",
+    "crates/horizon-world/src/worldgen/material_stage.rs": "698cbc786eff13c246e2bc2ea062401918cd4265899fbc3d53abc87e45a8e7a1",
+    "crates/horizon-world/src/worldgen/material_surface.rs": "5d37b90099df3d6da0845dab164e71469fb287019c2ee74bc6714f3b9d6d6d5b",
+    "crates/horizon-world/src/worldgen/ore_feature.rs": "83b89fd3be691c5412c0215b6abefdcaa44119a05aa41217e061970eb7e12ebd",
+    "crates/horizon-world/src/worldgen/placement/chain.rs": "9218399b4d3757f7bbc550d7729a7201f32a1c83a7030865e0c12aab8a80d116",
+    "crates/horizon-world/src/worldgen/placement/context.rs": "a278304795136677ad4b4933ea50c972b9729a1c671c03fa309c193e224b1fd6",
+    "crates/horizon-world/src/worldgen/placement/layer.rs": "a0f5ca776f33f9d4f72b8fdcd163426152e5e43cb4a7572fc1d4fc57bf965de1",
+    "crates/horizon-world/src/worldgen/placement.rs": "b0397e5818fae84358546193a95f84bcb0b5bffafce909e6fcb3386179ee8023",
+    "crates/horizon-world/src/worldgen/replace_blobs.rs": "bf3377d86d2570cd15288ba69dde64a2cf67c5bcbb9a31d0c23421964af74afa",
+    "crates/horizon-world/src/worldgen/router.rs": "2cee7cf15a0d2ada12be6b39d83e78177fd3033922e4f4cce87a64073cec2847",
+    "crates/horizon-world/src/worldgen/rule_test.rs": "d1662ec492489ebaa4b87e20f9a8c809dcf3a223a151211bd65ec241a63692fc",
+    "crates/horizon-world/src/worldgen/settings.rs": "a8fe87752e1982ef11cb67f8d80d8e3428b2c27db178044cb425ba803e689e59",
+    "crates/horizon-world/src/worldgen/simple_block.rs": "9ba1a88d5db4925f8c37366557887f776c805f9a6444781615b5dbaff52e92a4",
+    "crates/horizon-world/src/worldgen/snow_freeze.rs": "9040be3d5c7f8f0fd812d2df45e154bf8a9eeef038530b83fa4159d246eac35f",
+    "crates/horizon-world/src/worldgen/speleothem.rs": "c71651c1c97818a8a85863e14414d6139ea3bdeb897fa422043bcc1499d99aae",
+    "crates/horizon-world/src/worldgen/spike.rs": "eacf0d9d3d2bc3d4bcf62bc87555f90031138236a5bfef0eb5270204f7c2a4fc",
+    "crates/horizon-world/src/worldgen/spring.rs": "830849e9b89fcdf09e9b06fbefdcdebe3c8c3f82804f60b8bd5de04ba303cb62",
+    "crates/horizon-world/src/worldgen/state_provider/catalog.rs": "c8687e15a4887a9200c8d365857d801efaa8f90e669eee3e600a1db4905119eb",
+    "crates/horizon-world/src/worldgen/state_provider/noise.rs": "7ee369c2a032e5620cb9bdf9ee7adad1f70870fb0a27efb7b7c514d92f83491f",
+    "crates/horizon-world/src/worldgen/state_provider/properties.rs": "9909139aaca1dc4f743957257fadaa9d423d21fa401fa9abc050505f79365139",
+    "crates/horizon-world/src/worldgen/state_provider.rs": "be29ada818826a90afe01ab60916360fdfc4cbde5af15c9359cd56b1f1f7b156",
+    "crates/horizon-world/src/worldgen/tags.rs": "d35ded93fe6e95ea045cadcf4925e656dc34ef832b742179b9ad0cc49f902f31",
+    "crates/horizon-world/src/worldgen/terrain.rs": "fd1f2e0afc15daf66f484ea40a1f2b7013650bda0941b23c64c81ee9f79cb673",
+    "crates/horizon-world/src/worldgen/underwater_magma.rs": "7317e40af5ee5a9780f90ce358fa5d3e7f5b3d513b731df6ff97754d9c2a0154",
+    "crates/horizon-world/src/worldgen/value_provider.rs": "3358b563db8cb0bc8a9cfbbe2b8b3e70941cd2d37a0b519fbb6545f8d0dcbb69",
+    "crates/horizon-world/src/worldgen/vines.rs": "ee9b79b65012bd86a838241d2ef708680f7fe8eafc8aa656dae9cf2abf3c6418",
+    "crates/horizon-world/src/worldgen/weighted.rs": "839840aae25302933bbd97a81a2336330e2d03a0ad1684e1e16ac769ed408e6b",
+    "crates/horizon-world/src/worldgen/write_zone.rs": "8e17a179764d3f68c05882aef35f6810c28a0000f9a83e58bd6030660b76e64e",
+    "crates/horizon-world/src/worldgen.rs": "e8e9f099ee1fcec8eedce31805d676d3f89c18e84f494a147ffcbfee23d3d54f"
+  },
+  "fixtures_sha256": {
+    ".local/rust-free-space-parity/inputs.txt": "4481c0be8f29cc72059c31d803e99ec294c6e40fda20d048feb40ae50b596e5e",
+    ".local/rust-free-space-parity/facts.json": "5e89a805514cabfe46e082d651db406b9479781e1d97b65faa2ab9f6f871309b",
+    ".local/rust-free-space-parity/definitions.json": "9cac3c650353104db1648050621057bfe104dec1f44b53d0b7875f7bc20e6eec",
+    ".local/rust-free-space-parity/block-registry.nbt": "5042073c80753f9548cb8fdb5b1000f0e5a1220127a0cc3c6a75737e180bf9bb",
+    ".local/rust-free-space-parity/cached-collision.nbt": "4a274cd720a1bda585b02f50f16e90246576679e1e173c214548c5cbf607ab2d",
+    ".local/rust-free-space-parity/tags.json": "5e1301e5a9abf7e4de93af5dae3a157e852dbdb4ea345c2eb626305a605d4f98"
+  },
+  "rust_output_sha256": "dd887986afcfa9211283cee730efa39cbb0cee844dff4a9f07dfb763ca724334",
+  "references": [
+    {
+      "side": "client",
+      "jar_sha256": "4508d006323f24fa02876310c192d739af56516eb259000ac50f0909a68c9a2d",
+      "output_sha256": "dd887986afcfa9211283cee730efa39cbb0cee844dff4a9f07dfb763ca724334",
+      "matched_output_lines": 5764046
+    },
+    {
+      "side": "server",
+      "jar_sha256": "a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6",
+      "output_sha256": "dd887986afcfa9211283cee730efa39cbb0cee844dff4a9f07dfb763ca724334",
+      "matched_output_lines": 5764046
+    }
+  ],
+  "scope": "Actual Entity.isFree offsets its AABB, invokes native block/entity/border noCollision and only then section-based containsAnyLiquid over resident ProtoChunk storage. Rust composes registry-bound collision resolution and FluidPresence over the same TerrainChunk storage. Covers all registered states, offsets, context variants, height/chunk boundaries, fluids, missing required chunks and partial query failures. Entity collision lists, border applicability and contexts are controlled; chunk generation, live entity indexing and full playable integration remain pending."
+}
diff --git a/crates/horizon-world/examples/registry_collision_scan_fixture.rs b/crates/horizon-world/examples/registry_collision_scan_fixture.rs
index dff872908..9e3a19914 100644
--- a/crates/horizon-world/examples/registry_collision_scan_fixture.rs
+++ b/crates/horizon-world/examples/registry_collision_scan_fixture.rs
@@ -12,6 +12,8 @@ use horizon_world::{
     edge_backoff::{EdgeBackoffInput, EdgeBackoffWorld, back_off_from_edge},
     entity_obstruction::EntityIdentity,
     fluid::FluidState,
+    fluid_occupancy::{FluidOccupancyWorld, FluidPresence},
+    free_space::offset_is_free,
     heightmap::HeightmapState,
     liquid_collision::LiquidCollisionWorld,
     nbt::{self, Limits},
@@ -219,6 +221,49 @@ fn box_shape(v: &Value) -> io::Result<VoxelShape> {
     ))
     .map_err(io::Error::other)
 }
+impl FluidOccupancyWorld for World<'_> {
+    type Error = io::Error;
+    type Chunk = (i32, i32);
+    fn minimum_section_y(&mut self) -> io::Result<i32> {
+        self.trace.borrow_mut().query("liquid-min-section".into())?;
+        Ok(-1)
+    }
+    fn maximum_section_y(&mut self) -> io::Result<i32> {
+        self.trace.borrow_mut().query("liquid-max-section".into())?;
+        Ok(1)
+    }
+    fn chunk(&mut self, x: i32, z: i32) -> io::Result<Self::Chunk> {
+        self.trace
+            .borrow_mut()
+            .query(format!("liquid-chunk {x} {z}"))?;
+        if self.chunks.contains_key(&(x, z)) {
+            Ok((x, z))
+        } else {
+            Err(io::Error::other("missing required liquid chunk"))
+        }
+    }
+    fn section(
+        &mut self,
+        chunk: Self::Chunk,
+        y: i32,
+    ) -> io::Result<&horizon_world::chunk::BlockSection<'_>> {
+        self.trace
+            .borrow_mut()
+            .query(format!("liquid-section {y}"))?;
+        self.chunks[&chunk]
+            .0
+            .section((y + 1) as usize)
+            .ok_or_else(|| io::Error::other("missing section"))
+    }
+    fn minimum_y(&mut self) -> io::Result<i32> {
+        self.trace.borrow_mut().query("liquid-min-y".into())?;
+        Ok(-16)
+    }
+    fn maximum_y(&mut self) -> io::Result<i32> {
+        self.trace.borrow_mut().query("liquid-max-y".into())?;
+        Ok(31)
+    }
+}
 impl EntityMovementWorld for World<'_> {
     type Error = io::Error;
     fn entity_collisions(
@@ -389,6 +434,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         .cloned()
         .collect::<BTreeSet<_>>();
     let binding = SuffocationRegistry::new(collisions, &definitions, &natural)?;
+    let fluids = FluidPresence::new(&registry)?;
     let properties = Properties(Arc::new(
         (0..registry.len())
             .map(|id| {
@@ -514,6 +560,28 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 writeln!(t.out, "done edge {calls}")?;
                 continue;
             }
+            if m.get("free").and_then(Value::as_bool) == Some(true) {
+                let result = offset_is_free(
+                    &mut bound,
+                    &fluids,
+                    CollisionCheckRequest {
+                        entity: EntityIdentity(1),
+                        context,
+                        bounds,
+                        candidate_budget: 1_000_000,
+                    },
+                    Vec3::new(number(&v[0]), number(&v[1]), number(&v[2])),
+                    1_000_000,
+                );
+                let mut t = trace.borrow_mut();
+                match result {
+                    Ok(b) => writeln!(t.out, "free {b}")?,
+                    Err(_) => writeln!(t.out, "error")?,
+                };
+                let calls = t.calls;
+                writeln!(t.out, "done free {calls}")?;
+                continue;
+            }
             if m.get("check").and_then(Value::as_bool) == Some(true) {
                 let result = no_world_collision(
                     &mut bound,
diff --git a/crates/horizon-world/src/free_space.rs b/crates/horizon-world/src/free_space.rs
new file mode 100644
index 000000000..0d0b48d0f
--- /dev/null
+++ b/crates/horizon-world/src/free_space.rs
@@ -0,0 +1,43 @@
+//! Entity.isFree: offset collision clearance followed by resident liquid checks.
+use crate::{
+    block_collision_scan::{BlockCollisionWorld, CollisionScanError},
+    fluid_occupancy::{
+        FluidOccupancyError, FluidOccupancyWorld, FluidPresence, contains_any_liquid,
+    },
+    world_movement::{CollisionCheckRequest, EntityMovementWorld, no_world_collision},
+};
+use horizon_core::geometry::Vec3;
+use std::fmt;
+#[derive(Debug)]
+pub enum FreeSpaceError<E> {
+    Collision(CollisionScanError<E>),
+    Fluid(FluidOccupancyError<E>),
+}
+impl<E: fmt::Display> fmt::Display for FreeSpaceError<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Collision(e) => e.fmt(f),
+            Self::Fluid(e) => e.fmt(f),
+        }
+    }
+}
+impl<E: std::error::Error + 'static> std::error::Error for FreeSpaceError<E> {}
+pub fn offset_is_free<W, E>(
+    world: &mut W,
+    fluids: &FluidPresence<'_>,
+    mut request: CollisionCheckRequest<'_>,
+    offset: Vec3,
+    fluid_budget: usize,
+) -> Result<bool, FreeSpaceError<E>>
+where
+    W: BlockCollisionWorld<Error = E>
+        + EntityMovementWorld<Error = E>
+        + FluidOccupancyWorld<Error = E>,
+{
+    request.bounds = request.bounds.move_by(offset);
+    let bounds = request.bounds;
+    if !no_world_collision(world, request).map_err(FreeSpaceError::Collision)? {
+        return Ok(false);
+    }
+    Ok(!contains_any_liquid(world, fluids, bounds, fluid_budget).map_err(FreeSpaceError::Fluid)?)
+}
diff --git a/crates/horizon-world/src/lib.rs b/crates/horizon-world/src/lib.rs
index 4a6ec7a4f..46aac9c2c 100644
--- a/crates/horizon-world/src/lib.rs
+++ b/crates/horizon-world/src/lib.rs
@@ -26,6 +26,7 @@ pub mod fall_damage;
 pub mod fluid;
 pub mod fluid_occupancy;
 pub mod fluid_shape;
+pub mod free_space;
 pub mod ground_support;
 pub mod heightmap;
 pub mod interaction_shapes;
diff --git a/crates/horizon-world/src/registry_collision_scan.rs b/crates/horizon-world/src/registry_collision_scan.rs
index f0f0f14a7..ebc70a2e2 100644
--- a/crates/horizon-world/src/registry_collision_scan.rs
+++ b/crates/horizon-world/src/registry_collision_scan.rs
@@ -124,3 +124,38 @@ impl<W: crate::world_movement::EntityMovementWorld> crate::world_movement::Entit
             .map_err(CollisionQueryError::Context)
     }
 }
+
+impl<W: crate::fluid_occupancy::FluidOccupancyWorld> crate::fluid_occupancy::FluidOccupancyWorld
+    for RegistryCollisionWorld<'_, '_, W>
+{
+    type Error = CollisionQueryError<W::Error>;
+    type Chunk = W::Chunk;
+    fn minimum_section_y(&mut self) -> Result<i32, Self::Error> {
+        self.world
+            .minimum_section_y()
+            .map_err(CollisionQueryError::Context)
+    }
+    fn maximum_section_y(&mut self) -> Result<i32, Self::Error> {
+        self.world
+            .maximum_section_y()
+            .map_err(CollisionQueryError::Context)
+    }
+    fn chunk(&mut self, x: i32, z: i32) -> Result<Self::Chunk, Self::Error> {
+        self.world.chunk(x, z).map_err(CollisionQueryError::Context)
+    }
+    fn section(
+        &mut self,
+        chunk: Self::Chunk,
+        y: i32,
+    ) -> Result<&crate::chunk::BlockSection<'_>, Self::Error> {
+        self.world
+            .section(chunk, y)
+            .map_err(CollisionQueryError::Context)
+    }
+    fn minimum_y(&mut self) -> Result<i32, Self::Error> {
+        self.world.minimum_y().map_err(CollisionQueryError::Context)
+    }
+    fn maximum_y(&mut self) -> Result<i32, Self::Error> {
+        self.world.maximum_y().map_err(CollisionQueryError::Context)
+    }
+}
diff --git a/docs/collision-geometry.md b/docs/collision-geometry.md
index 30e342989..95335fd8f 100644
--- a/docs/collision-geometry.md
+++ b/docs/collision-geometry.md
@@ -936,3 +936,22 @@ changes/compaction and failures. Rust-only checks verify typed budget, nonfinite
 and registry errors. Targeted Clippy passes. Chunk snapshots repeat controlled
 resident data; collision composition for `Entity.isFree` and live world binding
 remain pending. No performance gain is claimed without measurement.
+
+
+`free_space.offset_is_free` composes native offset bounds, registry-bound
+block/entity/border collision clearance and resident liquid occupancy. The
+liquid scan runs only after collision clearance succeeds. Both phases share
+resident TerrainChunk storage through `RegistryCollisionWorld`; their typed
+errors and separate query budgets remain visible to the caller.
+
+`python3 tools/test_free_space_parity.py` invokes actual `Entity.isFree`, native
+collision iteration and liquid scanning on the corresponding resident ProtoChunk
+storage. The [free-space report](../benchmarks/rust-free-space-2026-10-07/scoped-parity.json)
+records **5,764,046 matching lines per JAR** across all **35,723 states**, offsets,
+fluid/context variants, height boundaries, required missing chunks and failures.
+Targeted Clippy passes. Entity lists, border applicability and collision contexts
+are controlled; chunk generation, live entity indexing and full playable
+integration remain pending.
+The [collision-only regression](../benchmarks/rust-free-space-2026-10-07/collision-regression.json)
+also passes **4,793,095 matching lines per JAR** after extending the shared
+fixture and registry binding.
diff --git a/mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java b/mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java
index 093fc522a..9096f5aa9 100644
--- a/mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java
+++ b/mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java
@@ -22,10 +22,11 @@ public final class VanillaRegistryCollisionScanOracle {
     }
     static PalettedContainerFactory factory;
     static class Chunk extends ProtoChunk {
-        Trace trace;BlockEntity entity;
+        Trace trace;BlockEntity entity;boolean liquidTrace;
         Chunk(int x,int z,Trace trace,BlockEntity entity){super(new ChunkPos(x,z),UpgradeData.EMPTY,LevelHeightAccessor.create(-16,48),factory,null);this.trace=trace;this.entity=entity;}
         @Override public BlockState getBlockState(BlockPos p){trace.query("block "+p.getX()+" "+p.getY()+" "+p.getZ());return super.getBlockState(p);}
         @Override public BlockEntity getBlockEntity(BlockPos p){trace.query("entity chunk "+p.getX()+" "+p.getY()+" "+p.getZ());return entity;}
+        @Override public LevelChunkSection getSection(int index){if(liquidTrace)trace.query("liquid-section "+(index-1));return super.getSection(index);}
         void write(BlockPos p,int id){getSection(getSectionIndex(p.getY())).setBlockState(p.getX()&15,p.getY()&15,p.getZ()&15,Block.stateById(id),false);}
     }
     static String boxText(String label,AABB b){return label+String.format(" %016x %016x %016x %016x %016x %016x",Double.doubleToLongBits(b.minX),Double.doubleToLongBits(b.minY),Double.doubleToLongBits(b.minZ),Double.doubleToLongBits(b.maxX),Double.doubleToLongBits(b.maxY),Double.doubleToLongBits(b.maxZ));}
@@ -36,8 +37,9 @@ public final class VanillaRegistryCollisionScanOracle {
         @Override public VoxelShape getCollisionShape(){trace.query("border-shape");return shape;}
     }
     static final class StepLevel extends net.minecraft.server.level.ServerLevel {
-        Trace trace;StepBorder border;List<VoxelShape> entities;CollisionGetter world;CollisionContext context;
+        Trace trace;StepBorder border;List<VoxelShape> entities;CollisionGetter world;CollisionContext context;LevelReader liquidWorld;Collection<Chunk> chunks;
         private StepLevel(){super(null,null,null,null,null,null,false,0L,List.of(),false);}
+        @Override public boolean containsAnyLiquid(AABB bounds){for(var c:chunks)c.liquidTrace=true;try{return liquidWorld.containsAnyLiquid(bounds);}finally{for(var c:chunks)c.liquidTrace=false;}}
         @Override public net.minecraft.world.level.border.WorldBorder getWorldBorder(){trace.query("border");return border;}
         @Override public List<VoxelShape> getEntityCollisions(net.minecraft.world.entity.Entity entity,AABB bounds){trace.query(boxText("entities",bounds));return entities;}
         @Override public Iterable<VoxelShape> getBlockCollisions(net.minecraft.world.entity.Entity entity,AABB bounds){return ()->new BlockCollisions<VoxelShape>(world,context,bounds,false,(p,shape)->shape);}
@@ -93,6 +95,8 @@ public final class VanillaRegistryCollisionScanOracle {
                 var v=f.getAsJsonArray("box");var bounds=new AABB(number(v.get(0)),number(v.get(1)),number(v.get(2)),number(v.get(3)),number(v.get(4)),number(v.get(5)));
                 if(f.has("movement")){
                     var m=f.getAsJsonObject("movement");var level=(StepLevel)allocate.invoke(unsafe,StepLevel.class);level.trace=trace;level.world=world;level.context=context;
+                    level.chunks=chunks.values();level.liquidWorld=(LevelReader)Proxy.newProxyInstance(LevelReader.class.getClassLoader(),new Class<?>[]{LevelReader.class},(proxy,method,values)->{switch(method.getName()){case "getMinSectionY":trace.query("liquid-min-section");return -1;case "getMaxSectionY":trace.query("liquid-max-section");return 1;case "getMinY":trace.query("liquid-min-y");return -16;case "getMaxY":trace.query("liquid-max-y");return 31;case "getChunk":if(values.length!=2)throw new AssertionError(method);int x=(int)values[0],z=(int)values[1];trace.query("liquid-chunk "+x+" "+z);var c=chunks.get(key(x,z));if(c==null)throw new Stop();return c;default:if(method.isDefault())return InvocationHandler.invokeDefault(proxy,method,values);throw new AssertionError(method);}});
+
                     level.entities=new ArrayList<>();for(var shape:m.getAsJsonArray("entities"))level.entities.add(boxShape(shape));
                     level.border=new StepBorder();level.border.trace=trace;level.border.shape=m.get("border").isJsonNull()?null:boxShape(m.get("border"));
                     var entity=(StepEntity)allocate.invoke(unsafe,StepEntity.class);entity.configure(level,bounds,(float)number(m.get("step")),m.get("grounded").getAsBoolean());var delta=m.getAsJsonArray("delta");
@@ -100,6 +104,7 @@ public final class VanillaRegistryCollisionScanOracle {
                         var e=m.getAsJsonObject("edge");var player=(EdgePlayer)allocate.invoke(unsafe,EdgePlayer.class);player.configure(level,bounds,(float)number(m.get("step")),m.get("grounded").getAsBoolean(),e.get("staying").getAsBoolean());player.fallDistance=number(e.get("fall"));var a=new net.minecraft.world.entity.player.Abilities();a.flying=e.get("flying").getAsBoolean();abilities.set(player,a);
                         try{var result=player.backoff(new Vec3(number(delta.get(0)),number(delta.get(1)),number(delta.get(2))),net.minecraft.world.entity.MoverType.valueOf(e.get("mover").getAsString()));out.printf("edge %016x %016x %016x%n",Double.doubleToLongBits(result.x),Double.doubleToLongBits(result.y),Double.doubleToLongBits(result.z));}catch(Stop error){out.println("error");}out.println("done edge "+trace.calls);continue;
                     }
+                    if(m.has("free")&&m.get("free").getAsBoolean()){try{out.println("free "+entity.isFree(number(delta.get(0)),number(delta.get(1)),number(delta.get(2))));}catch(Stop error){out.println("error");}out.println("done free "+trace.calls);continue;}
                     if(m.has("check")&&m.get("check").getAsBoolean()){try{out.println("clear "+level.noCollision(entity,bounds));}catch(Stop error){out.println("error");}out.println("done check "+trace.calls);continue;}
                     try{var result=(Vec3)collide.invoke(entity,new Vec3(number(delta.get(0)),number(delta.get(1)),number(delta.get(2))));out.printf("movement %016x %016x %016x%n",Double.doubleToLongBits(result.x),Double.doubleToLongBits(result.y),Double.doubleToLongBits(result.z));}
                     catch(InvocationTargetException error){if(error.getCause() instanceof Stop)out.println("error");else throw error;}
diff --git a/tools/test_free_space_parity.py b/tools/test_free_space_parity.py
new file mode 100644
index 000000000..5fe5e0e70
--- /dev/null
+++ b/tools/test_free_space_parity.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+"""Compare integrated entity free-space queries with collisions and resident fluids with pinned vanilla."""
+import collections
+import json
+import os
+from pathlib import Path
+import platform
+import subprocess
+import struct
+import random
+try:
+    from . import lab, test_rust_parity as base, test_worldgen_parity as worldgen
+except ImportError:
+    import lab
+    import test_rust_parity as base
+    import test_worldgen_parity as worldgen
+
+
+def collision_corpus(facts):
+    def bits(v):return struct.pack('>d',float(v)).hex()
+    def row(state,bounds=(-.3,0,.2,.3,1.8,.8),context=0,entities=(),border=None,fail=-1,blocks=None):
+        return dict(chunks=[[x,z] for x in [-1,0,1] for z in [-1,0,1]],blocks=blocks if blocks is not None else [[0,0,0,state]],context=context,y=bits(0),entities=[0,0],fail=fail,limit=100000,suffocating=False,box=list(map(bits,bounds)),movement=dict(check=True,delta=list(map(bits,[0,0,0])),step=bits(.6),grounded=True,entities=[list(map(bits,b)) for b in entities],border=None if border is None else list(map(bits,border))))
+    for state in range(len(facts['states'])):
+        yield row(state,context=state%4)
+        yield row(state,bounds=(-.6,0,.2,-.2,1.8,.8),context=state%4,border=[-.5,-1,-1,-.4,3,1])
+    defaults=facts['defaults'];names=['air','stone','water','lava','scaffolding','powder_snow','shulker_box','moving_piston','stone_slab','oak_stairs','snow','cobweb','bamboo']
+    boxes=[[-.3,0,.2,.3,1.8,.8],[0,0,0,1,1,1],[0,0,0,0,0,0],[1,0,0,1.6,1.8,.6],[-16,-16,-16,-15,0,-15],[15.8,0,15.8,16.4,1.8,16.4]]
+    entity_lists=[[],[[0,0,0,0,0,0]],[[0,0,0,1,1,1]],[[100,100,100,101,101,101]]]
+    borders=[None,[-.5,-1,-1,-.4,3,1],[0,0,0,0,0,0],[100,100,100,101,101,101]]
+    for name in names:
+        for context in range(4):
+            for entities in entity_lists:
+                for border in borders:
+                    for fail in [-1,0,1,3,12,25,50]:yield row(defaults['minecraft:'+name],context=context,entities=entities,border=border,fail=fail)
+    rng=random.Random(0x434c454152)
+    for _ in range(3000):
+        state=rng.randrange(len(facts['states']));f=row(state,bounds=rng.choice(boxes),context=rng.randrange(4),entities=rng.choice(entity_lists),border=rng.choice(borders),fail=rng.choice([-1,-1,0,3,12,50]))
+        f['entities']=[rng.randrange(3),rng.randrange(3)]
+        if rng.randrange(3)==0:f['chunks']=[];f['blocks']=[]
+        yield f
+
+
+def corpus(facts):
+    def bits(v):return struct.pack('>d',float(v)).hex()
+    for i,f in enumerate(collision_corpus(facts)):
+        f['movement'].pop('check');f['movement']['free']=True
+        f['movement']['delta']=[bits(v) for v in [(0,0,0),(.5,.2,0),(0,.8,.5),(-.2,0,-.2)][i%4]]
+        yield f
+    air=facts['defaults']['minecraft:air']
+    for state in [facts['defaults']['minecraft:'+n] for n in ['air','water','lava','seagrass','kelp','bubble_column','water_cauldron','scaffolding','powder_snow','stone']]:
+        for y in [-32,-16,-.1,0,15.9,31,32,64]:
+            for dx in [-16,-.5,0,.5,16,32]:
+                for fail in [-1,0,10,30,50,100,150]:
+                    yield dict(chunks=[[x,z] for x in [-1,0,1] for z in [-1,0,1]],blocks=[[0,0,0,state]],context=0,y=bits(0),entities=[0,0],fail=fail,limit=100000,suffocating=False,box=list(map(bits,[0,y,0,1,y+1,1])),movement=dict(free=True,delta=list(map(bits,[dx,0,0])),step=bits(.6),grounded=True,entities=[],border=None))
+
+
+def main():
+    lock, jars, libraries = base.verify_artifacts()
+    build = lab.LOCAL/'rust-free-space-parity';build.mkdir(exist_ok=True)
+    report_path = build/'report.json';report_path.unlink(missing_ok=True)
+    oracle = lab.ROOT/'mods/horizon/src/test/java/dev/horizonlab/parity/VanillaRegistryCollisionScanOracle.java'
+    helpers = [oracle.with_name(name+'.java') for name in
+               ['VanillaHeightmapOracle', 'VanillaCollisionOracle', 'VanillaBlockStateCodecOracle', 'VanillaSuffocationOracle', 'VanillaFaceSupportOracle']]
+    sources = [oracle, *helpers, Path(__file__), lab.ROOT/'tools/test_rust_parity.py',
+               lab.ROOT/'tools/test_worldgen_parity.py', lab.ROOT/'tools/lab.py',
+               lab.ROOT/'Cargo.toml', lab.ROOT/'Cargo.lock',
+               lab.ROOT/'crates/horizon-world/examples/registry_collision_scan_fixture.rs']
+    for crate in ['horizon-core', 'horizon-world']:
+        sources += [lab.ROOT/'crates'/crate/'Cargo.toml',
+                    *sorted((lab.ROOT/'crates'/crate/'src').rglob('*.rs'))]
+    tested = base.source_hashes(sources)
+    tags = worldgen.tag_resources(jars['server'])
+    if tags != worldgen.tag_resources(jars['client']):raise AssertionError('Client/server block tags differ')
+    lab.write_json(build/'tags.json', tags)
+    classes = build/'classes';classes.mkdir(exist_ok=True)
+    dependencies = os.pathsep.join(map(str, libraries))
+    def run(command, name):
+        with (build/(name+'.log')).open('w') as log:
+            subprocess.run(list(map(str, command)), cwd=lab.ROOT, check=True, timeout=3600,
+                           stdout=log, stderr=subprocess.STDOUT)
+    run(['javac', '--release', lock['minecraft']['java_major'], '-proc:none', '-cp',
+         str(jars['server'])+os.pathsep+dependencies, '-d', classes, oracle, *helpers], 'compile-java')
+    def java(side, mode):
+        run(['java', '-Xmx768M', '-cp', os.pathsep.join([str(classes), str(jars[side]), dependencies]),
+             'dev.horizonlab.parity.VanillaRegistryCollisionScanOracle', mode, build], side+'-'+mode)
+    java('server', 'export')
+    facts = json.loads((build/'facts.json').read_text())
+    if len(facts['states']) != 35723:raise AssertionError('Incomplete pinned registry')
+    definitions = json.loads((build/'definitions.json').read_text())
+    count = 0
+    with (build/'inputs.txt').open('w') as output:
+        for fixture in corpus(facts):
+            output.write(json.dumps(fixture, separators=(',', ':'))+'\n');count += 1
+    fixture_paths = [build/name for name in ['inputs.txt', 'facts.json', 'definitions.json',
+                                            'block-registry.nbt', 'cached-collision.nbt', 'tags.json']]
+    fixtures = base.source_hashes(fixture_paths)
+    run(['cargo', 'build', '--locked', '--release', '-p', 'horizon-world', '--example', 'registry_collision_scan_fixture'], 'compile-rust')
+    metadata = json.loads(subprocess.check_output(['cargo', 'metadata', '--locked', '--no-deps', '--format-version', '1'], cwd=lab.ROOT))
+    binary = Path(metadata['target_directory'])/'release/examples'/('registry_collision_scan_fixture.exe' if os.name=='nt' else 'registry_collision_scan_fixture')
+    run([binary, build], 'rust');references = []
+    for side, jar in jars.items():
+        java(side, side)
+        matched = base.compare(build/(side+'.txt'), build/'rust.txt')
+        references.append({'side':side, 'jar_sha256':lab.digest(jar, 'sha256'),
+                           'output_sha256':lab.digest(build/(side+'.txt'), 'sha256'), 'matched_output_lines':matched})
+        print(f'{side}: {matched:,} free-space lines match', flush=True)
+    base.ensure_sources_unchanged(sources, tested);base.ensure_sources_unchanged(fixture_paths, fixtures)
+    report = {'schema':1, 'minecraft':lock['minecraft']['version'], 'manifest_sha1':lock['minecraft']['manifest_sha1'],
+              'platform':platform.platform(), 'java':subprocess.check_output(['java', '--version'], text=True).splitlines()[0],
+              'rustc':subprocess.check_output(['rustc', '--version'], text=True).strip(),
+              'registry_states':len(facts['states']), 'block_definitions':len(definitions),
+              'definition_counts':dict(collections.Counter(definitions.values())),
+              'native_chunk_storage':'ProtoChunk', 'rust_chunk_storage':'TerrainChunk', 'fixtures':count, 'sources_sha256':tested, 'fixtures_sha256':fixtures,
+              'rust_output_sha256':lab.digest(build/'rust.txt', 'sha256'), 'references':references,
+              'scope':'Actual Entity.isFree offsets its AABB, invokes native block/entity/border noCollision and only then section-based containsAnyLiquid over resident ProtoChunk storage. Rust composes registry-bound collision resolution and FluidPresence over the same TerrainChunk storage. Covers all registered states, offsets, context variants, height/chunk boundaries, fluids, missing required chunks and partial query failures. Entity collision lists, border applicability and contexts are controlled; chunk generation, live entity indexing and full playable integration remain pending.'}
+    lab.write_json(report_path, report);print(f'Scoped free space parity passed: {report_path}', flush=True)
+
+
+if __name__ == '__main__':main()