diff --git a/CMakeLists.txt b/CMakeLists.txt
index 009d5301..79ae2132 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -186,7 +186,7 @@ endif ()
 set(CMAKE_CXX_STANDARD 20)
 
 option(HIGHBAR_STOCK_RECOIL
-	"Build the stock Recoil 2025.06.19 tactical profile without appended callbacks" OFF)
+	"Build the stock Recoil 2026.07.04 tactical profile without appended callbacks" OFF)
 if (HIGHBAR_STOCK_RECOIL AND HIGHBAR_FACTORY_REPLACEMENT_V1)
 	message(FATAL_ERROR
 		"HIGHBAR_STOCK_RECOIL cannot be combined with the custom factory replacement extension")
@@ -342,9 +342,9 @@ if    (BUILD_Cpp_AIWRAPPER)
 	string(REGEX MATCH "sha256[ \t]*=[ \t]*\"([^\"]+)\"" _ "${_highbar_pin_content}")
 	set(HIGHBAR_ENGINE_SHA256 "${CMAKE_MATCH_1}")
 	if (HIGHBAR_STOCK_RECOIL)
-		set(HIGHBAR_ENGINE_RELEASE_ID "2025.06.19")
+		set(HIGHBAR_ENGINE_RELEASE_ID "2026.07.04")
 		set(HIGHBAR_ENGINE_SHA256
-			"e4f63c1a391f9ddfbb4d1da225d9533b1d56c65133687d036422a7380c84e833")
+			"651d6dca67ad99fde1a593d57eede0dfee167e200558988f154ad2bac1cfce21")
 	endif ()
 	if (NOT HIGHBAR_ENGINE_RELEASE_ID OR NOT HIGHBAR_ENGINE_SHA256)
 		message(FATAL_ERROR
diff --git a/contracts/barc-stock-queue-v1/contract.json b/contracts/barc-stock-queue-v1/contract.json
index ccf5c2be..b34f4b37 100644
--- a/contracts/barc-stock-queue-v1/contract.json
+++ b/contracts/barc-stock-queue-v1/contract.json
@@ -3,9 +3,9 @@
   "owner": "FS-GG/HighBarV3",
   "consumer": "FS-GG/FSBarV2",
   "stockEngine": {
-    "sourceCommit": "2639eedac7d1fd67d793ec93ebd27f014f336a14",
-    "headlessSha256": "e4f63c1a391f9ddfbb4d1da225d9533b1d56c65133687d036422a7380c84e833",
-    "release": "2025.06.19"
+    "sourceCommit": "de69361239d8c8b1012dba3f5aa3122954ea4da3",
+    "headlessSha256": "651d6dca67ad99fde1a593d57eede0dfee167e200558988f154ad2bac1cfce21",
+    "release": "2026.07.04"
   },
   "profiles": {
     "legacy": {
diff --git a/data/config/spring-headless.pin b/data/config/spring-headless.pin
index d5c20066..f75652d0 100644
--- a/data/config/spring-headless.pin
+++ b/data/config/spring-headless.pin
@@ -1,5 +1,5 @@
 [engine]
-release_id = "recoil_2025.06.19"
-sha256 = "e4f63c1a391f9ddfbb4d1da225d9533b1d56c65133687d036422a7380c84e833"
-acquisition_url = "https://github.com/beyond-all-reason/RecoilEngine/releases/download/2025.06.19/recoil_2025.06.19_amd64-linux.7z"
-install_path_relative = "Beyond All Reason/engine/recoil_2025.06.19"
+release_id = "recoil_2026.07.04"
+sha256 = "651d6dca67ad99fde1a593d57eede0dfee167e200558988f154ad2bac1cfce21"
+acquisition_url = "https://github.com/beyond-all-reason/RecoilEngine/releases/download/2026.07.04/recoil_2026.07.04_amd64-linux.7z"
+install_path_relative = "Beyond All Reason/engine/recoil_2026.07.04"
diff --git a/docs/compilation.md b/docs/compilation.md
index b4af21ce..d10efe83 100644
--- a/docs/compilation.md
+++ b/docs/compilation.md
@@ -49,13 +49,13 @@ setting up a new machine. The practical requirements are:
 The currently pinned runtime is:
 
 ```text
-recoil_2025.06.19
+recoil_2026.07.04
 ```
 
 The reference engine binary path used by the test harness is:
 
 ```text
-$HOME/.local/state/Beyond All Reason/engine/recoil_2025.06.19/spring-headless
+$HOME/.local/state/Beyond All Reason/engine/recoil_2026.07.04/spring-headless
 ```
 
 ## Source Layout
@@ -184,7 +184,7 @@ make test
 The runtime install directory is:
 
 ```text
-$BAR_DATA/engine/recoil_2025.06.19/AI/Skirmish/highBar/stable/
+$BAR_DATA/engine/recoil_2026.07.04/AI/Skirmish/highBar/stable/
 ```
 
 On the reference Linux setup, `$BAR_DATA` is:
@@ -207,7 +207,7 @@ Example:
 
 ```bash
 BAR_DATA="$HOME/.local/state/Beyond All Reason"
-ENGINE_RELEASE="recoil_2025.06.19"
+ENGINE_RELEASE="recoil_2026.07.04"
 HIGHBAR_DIR="$BAR_DATA/engine/$ENGINE_RELEASE/AI/Skirmish/highBar/stable"
 
 mkdir -p "$HIGHBAR_DIR/config" "$HIGHBAR_DIR/script"
diff --git a/docs/local-env.md b/docs/local-env.md
index 12d153dd..38673b54 100644
--- a/docs/local-env.md
+++ b/docs/local-env.md
@@ -2,7 +2,7 @@
 
 ## Spring Headless
 
-- `SPRING_HEADLESS=/home/developer/.local/state/Beyond All Reason/engine/recoil_2025.06.19/spring-headless`
+- `SPRING_HEADLESS=/home/developer/.local/state/Beyond All Reason/engine/recoil_2026.07.04/spring-headless`
 - Persisted for login shells in `/home/developer/.bash_profile`
 
 ## BAR Graphical Client
diff --git a/docs/roadmaps/barc-01-native-asset-proof.md b/docs/roadmaps/barc-01-native-asset-proof.md
index 3ad9b41f..31c5836d 100644
--- a/docs/roadmaps/barc-01-native-asset-proof.md
+++ b/docs/roadmaps/barc-01-native-asset-proof.md
@@ -1,5 +1,31 @@
 # BARC-01 native asset and correlated result proof
 
+## Selected current stock engine — 2026-10-02
+
+The next product candidate uses the official Recoil **2026.07.04** release,
+source `de69361239d8c8b1012dba3f5aa3122954ea4da3`, tree
+`081bfe95b4e76e3212afa5805ab5a82e474c0b47`. Downloaded amd64 Linux archive
+SHA-256 is `9824c2c38124e4b90a9b5f7c4e7200c3ea6503c0bd4bff0e0ff46212ec29dcab`,
+matching GitHub's published asset digest. Extracted headless SHA-256 is
+`651d6dca67ad99fde1a593d57eede0dfee167e200558988f154ad2bac1cfce21`;
+actual version readback is `spring-headless version 2026.07.04 (Headless)`.
+
+The selected stock build pin, generated engine identity, closed release-tuple
+admission, trace admission and producer/consumer contract agree on this release.
+The Lua observer's exact source check follows the new source; wire revision,
+queue behavior and historical algorithm vectors are unchanged. The older
+profile's release tuple is refused by the new stock admission.
+
+The official engine remains unmodified. Its
+[upstream headless atlas guard](https://github.com/beyond-all-reason/RecoilEngine/blob/de69361239d8c8b1012dba3f5aa3122954ea4da3/rts/Rendering/Textures/TextureRenderAtlas.cpp#L389)
+is a source-grounded repair candidate, with local startup effect still unproved.
+Existing runtime/evidence directories were preserved; the new engine is acquired
+in a separate candidate installation. Plugin build checks are recorded with the
+owning PR. Count1 and all six useful-play journeys remain unaccepted.
+
+The remaining sections retain the historical 2025.06.19 asset proof and its
+attempt-scoped identities. They do not describe the new candidate's acceptance.
+
 This records a reproducible local asset set and the limit of native evidence as
 of 2026-09-28. It proves one live MoveUnit engine effect but does not qualify
 the full BARC-01.2 command/result contract.
diff --git a/scripts/build-barc-stock-plugin.sh b/scripts/build-barc-stock-plugin.sh
index 946a4f4d..f8cee8c3 100755
--- a/scripts/build-barc-stock-plugin.sh
+++ b/scripts/build-barc-stock-plugin.sh
@@ -9,9 +9,9 @@ fi
 recoil_source=$(realpath "$1")
 highbar_source=$(realpath "$2")
 build_dir=$(realpath -m "$3")
-expected_recoil_commit=2639eedac7d1fd67d793ec93ebd27f014f336a14
-expected_recoil_tree=94c1d8ad62b20285b19c1b5f3360a81fbbc54468
-expected_contract_sha=28afbc6703843a617db5e3f59a5fcf55a671c993f0585766f1ab2f71218333dc
+expected_recoil_commit=de69361239d8c8b1012dba3f5aa3122954ea4da3
+expected_recoil_tree=081bfe95b4e76e3212afa5805ab5a82e474c0b47
+expected_contract_sha=ac0c94390a1b5da600e49e2d00d9a36d4782964a33603ddbc2c4bafbd3db8c28
 cmake_bin=${BARC_CMAKE_BIN:-cmake}
 sysroot=${BARC_SYSROOT:-/tmp/barc-native-assets/sysroot/usr}
 jobs=${BARC_BUILD_JOBS:-4}
@@ -22,7 +22,7 @@ if (( jobs < 1 || jobs > 8 )); then
 fi
 if [[ $(git -C "${recoil_source}" rev-parse HEAD) != "${expected_recoil_commit}" \
    || $(git -C "${recoil_source}" rev-parse HEAD^{tree}) != "${expected_recoil_tree}" ]]; then
-  echo "Recoil source is not the admitted stock 2639 commit/tree" >&2
+  echo "Recoil source is not the admitted stock 2026.07.04 commit/tree" >&2
   exit 1
 fi
 if [[ -n $(git -C "${recoil_source}" status --porcelain --untracked-files=no --ignore-submodules=all) ]]; then
diff --git a/src/circuit/grpc/StockQueueTrace.cpp b/src/circuit/grpc/StockQueueTrace.cpp
index c2f59a56..04f7dfc8 100644
--- a/src/circuit/grpc/StockQueueTrace.cpp
+++ b/src/circuit/grpc/StockQueueTrace.cpp
@@ -151,7 +151,7 @@ bool Valid(const StockQueueTraceRecord& r) {
 	if (c.profile != kStockTacticalProfile || c.revision != kStockTacticalRevision
 		|| c.evidence_scheme != QueueEvidenceScheme::StockLuaSupportedFieldsV1
 		|| c.catalogue_id.size() != 16 || c.catalogue_revision == 0
-		|| c.engine_version != "2025.06.19" || !BoundedText(c.game_name)
+		|| c.engine_version != "2026.07.04" || !BoundedText(c.game_name)
 		|| !BoundedText(c.game_version) || c.game_content_sha256.size() != 32
 		|| c.actor_id > 31999 || c.actor_lifetime == 0
 		|| (c.domain != "production" && c.domain != "rally")) return false;
diff --git a/src/circuit/grpc/TacticalNativeState.cpp b/src/circuit/grpc/TacticalNativeState.cpp
index 0a9ab86b..1bea4fae 100644
--- a/src/circuit/grpc/TacticalNativeState.cpp
+++ b/src/circuit/grpc/TacticalNativeState.cpp
@@ -221,14 +221,14 @@ bool SupportsStockRecoilProfile(const char* major, const char* minor,
 		&& additional != nullptr
 		&& normal != nullptr && sync != nullptr && full != nullptr
 		&& is_release
-		&& std::strcmp(major, "2025") == 0
-		&& std::strcmp(minor, "06") == 0
-		&& std::strcmp(patchset, "19") == 0
+		&& std::strcmp(major, "2026") == 0
+		&& std::strcmp(minor, "07") == 0
+		&& std::strcmp(patchset, "04") == 0
 		&& commits[0] == '\0' && hash[0] == '\0' && branch[0] == '\0'
 		&& std::strcmp(additional, "Headless") == 0
-		&& std::strcmp(normal, "2025.06.19") == 0
-		&& std::strcmp(sync, "2025.06.19") == 0
-		&& std::strcmp(full, "2025.06.19 (Headless)") == 0;
+		&& std::strcmp(normal, "2026.07.04") == 0
+		&& std::strcmp(sync, "2026.07.04") == 0
+		&& std::strcmp(full, "2026.07.04 (Headless)") == 0;
 }
 
 std::optional<std::uint32_t> NativeBuildDefinitionId(
diff --git a/tests/stock-observer/run_stock_lua51_float_abi.py b/tests/stock-observer/run_stock_lua51_float_abi.py
index 04bbafde..a63f1cff 100755
--- a/tests/stock-observer/run_stock_lua51_float_abi.py
+++ b/tests/stock-observer/run_stock_lua51_float_abi.py
@@ -10,7 +10,7 @@
 import subprocess
 import tempfile
 
-EXPECTED_RECOIL = "2639eedac7d1fd67d793ec93ebd27f014f336a14"
+EXPECTED_RECOIL = "de69361239d8c8b1012dba3f5aa3122954ea4da3"
 ROOT = pathlib.Path(__file__).resolve().parents[2]
 
 
diff --git a/tests/unit/stock_queue_trace_test.cc b/tests/unit/stock_queue_trace_test.cc
index 992882d9..8ee9d7b5 100644
--- a/tests/unit/stock_queue_trace_test.cc
+++ b/tests/unit/stock_queue_trace_test.cc
@@ -56,7 +56,7 @@ StockQueueTraceRecord Record(bool final_read = false) {
 	value.context.profile = kStockTacticalProfile; value.context.revision = kStockTacticalRevision;
 	value.context.evidence_scheme = QueueEvidenceScheme::StockLuaSupportedFieldsV1;
 	value.context.catalogue_id = std::string(16, 'c'); value.context.catalogue_revision = 8;
-	value.context.engine_version = "2025.06.19"; value.context.game_name = "BAR";
+	value.context.engine_version = "2026.07.04"; value.context.game_name = "BAR";
 	value.context.game_version = "test"; value.context.game_content_sha256 = std::string(32, 'h');
 	value.context.actor_id = 0; value.context.actor_lifetime = 7; value.context.domain = "production";
 	value.read.status = StockQueueReadStatus::Complete; value.read.domain = StockQueueDomain::Production;
@@ -98,6 +98,16 @@ TEST(StockQueueTrace, WritesClosedSampleAndFinalIdentityWithSignedZeroBits) {
 	::close(fd); ::unlink(path);
 }
 
+TEST(StockQueueTrace, RefusesHistoricalEngineIdentity) {
+	char path[] = "/tmp/highbar-stock-engine-test-XXXXXX";
+	const int fd = ::mkstemp(path); ASSERT_GE(fd, 0);
+	auto sink = StockQueueTraceSink::CreateForTest(fd, "run"); ASSERT_TRUE(sink);
+	auto record = Record(); record.context.engine_version = "2025.06.19";
+	record.computed_revision = ComputeStockQueueRevision(record.context, record.read.entries);
+	EXPECT_FALSE(sink->Record(record)); EXPECT_EQ(sink->records_written(), 0u);
+	sink.reset(); ::unlink(path);
+}
+
 TEST(StockQueueTrace, PartialWritesCompleteButZeroWriteLatchesFailure) {
 	char path[] = "/tmp/highbar-stock-trace-write-XXXXXX"; const int fd = ::mkstemp(path); ASSERT_GE(fd, 0);
 	auto partial = StockQueueTraceSink::CreateForTest(fd, "run", [](int descriptor, const void* data, std::size_t size) {
diff --git a/tests/unit/tactical_native_state_test.cc b/tests/unit/tactical_native_state_test.cc
index ab4bdff8..b009e10f 100644
--- a/tests/unit/tactical_native_state_test.cc
+++ b/tests/unit/tactical_native_state_test.cc
@@ -128,20 +128,22 @@ TEST(TacticalNativeState, StockProfileRequiresClosedReleaseTuple) {
 		return SupportsStockRecoilProfile(major, minor, patchset, "", hash, branch,
 			additional, normal, sync, full, is_release);
 	};
-	EXPECT_TRUE(supports("2025", "06", "19", "", "", "Headless",
+	EXPECT_TRUE(supports("2026", "07", "04", "", "", "Headless",
+		"2026.07.04", "2026.07.04", "2026.07.04 (Headless)"));
+	EXPECT_FALSE(supports("2025", "06", "19", "", "", "Headless",
 		"2025.06.19", "2025.06.19", "2025.06.19 (Headless)"));
 	EXPECT_FALSE(supports("2025", "06", "20", "", "", "Headless",
 		"2025.06.20", "2025.06.20", "2025.06.20 (Headless)"));
-	EXPECT_FALSE(supports("2025", "06", "19", "", "", "",
-		"2025.06.19", "2025.06.19", "2025.06.19"));
-	EXPECT_FALSE(supports("2025", "06", "19", "", "", "Headless Debug",
-		"2025.06.19", "2025.06.19", "2025.06.19 (Headless Debug)"));
-	EXPECT_FALSE(supports("2025", "06", "19", "custom", "", "Headless",
-		"2025.06.19", "2025.06.19", "2025.06.19 (Headless)"));
-	EXPECT_FALSE(supports("2025", "06", "19", "", "", "Headless",
-		"2025.06.19", "2025.06.19", "2025.06.19 (Headless)", false));
-	EXPECT_FALSE(supports(nullptr, "06", "19", "", "", "Headless",
-		"2025.06.19", "2025.06.19", "2025.06.19 (Headless)"));
+	EXPECT_FALSE(supports("2026", "07", "04", "", "", "",
+		"2026.07.04", "2026.07.04", "2026.07.04"));
+	EXPECT_FALSE(supports("2026", "07", "04", "", "", "Headless Debug",
+		"2026.07.04", "2026.07.04", "2026.07.04 (Headless Debug)"));
+	EXPECT_FALSE(supports("2026", "07", "04", "custom", "", "Headless",
+		"2026.07.04", "2026.07.04", "2026.07.04 (Headless)"));
+	EXPECT_FALSE(supports("2026", "07", "04", "", "", "Headless",
+		"2026.07.04", "2026.07.04", "2026.07.04 (Headless)", false));
+	EXPECT_FALSE(supports(nullptr, "07", "04", "", "", "Headless",
+		"2026.07.04", "2026.07.04", "2026.07.04 (Headless)"));
 }
 
 TEST(TacticalNativeState, BuildDefinitionProjectionCoversSignedMinimum) {