diff --git a/Cargo.lock b/Cargo.lock
index 6ef33e64..278812a8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1237,7 +1237,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1258,7 +1258,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1272,7 +1272,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1288,7 +1288,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_engine"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1300,7 +1300,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_fold"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "num-bigint",
  "oxide_bytecode",
@@ -1312,7 +1312,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1321,7 +1321,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1335,7 +1335,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1347,7 +1347,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1356,11 +1356,11 @@ dependencies = [
 
 [[package]]
 name = "oxide_net"
-version = "0.18.0"
+version = "0.18.1"
 
 [[package]]
 name = "oxide_parser"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1375,7 +1375,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1391,7 +1391,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1404,7 +1404,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1424,7 +1424,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1437,7 +1437,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "bumpalo",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index c557cb7e..b639cc31 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.18.0"
+version = "0.18.1"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"
diff --git a/crates/oxide_kernel/src/kernel/config.rs b/crates/oxide_kernel/src/kernel/config.rs
index c6889a42..1ca9d48c 100644
--- a/crates/oxide_kernel/src/kernel/config.rs
+++ b/crates/oxide_kernel/src/kernel/config.rs
@@ -38,7 +38,7 @@ impl KernelConfig {
             max_steps: None,
             max_alloc_bytes: None,
             max_call_depth: 1024,
-            session_gc_threshold: 33_554_432,
+            session_gc_threshold: 4_194_304,
             max_cached_modules: 512,
             log_levels: [Level::Off; SUBSYSTEM_COUNT],
         }
@@ -53,7 +53,7 @@ impl KernelConfig {
             max_steps: None,
             max_alloc_bytes: None,
             max_call_depth: 1024,
-            session_gc_threshold: 33_554_432,
+            session_gc_threshold: 4_194_304,
             max_cached_modules: 512,
             log_levels: [Level::Off; SUBSYSTEM_COUNT],
         }
@@ -68,7 +68,7 @@ impl KernelConfig {
             max_steps: None,
             max_alloc_bytes: None,
             max_call_depth: 1024,
-            session_gc_threshold: 33_554_432,
+            session_gc_threshold: 4_194_304,
             max_cached_modules: 512,
             log_levels: [Level::Off; SUBSYSTEM_COUNT],
         }
diff --git a/crates/oxide_test262/src/runner.rs b/crates/oxide_test262/src/runner.rs
index c9d1ee46..adfd46a9 100644
--- a/crates/oxide_test262/src/runner.rs
+++ b/crates/oxide_test262/src/runner.rs
@@ -345,22 +345,5 @@ pub(crate) fn build_runner_engine() -> Engine {
     kernel_config.max_call_depth = 256;
     kernel_config.min_pool_size = 0;
     kernel_config.max_pool_size = Some(1);
-    // 单测试分配上限：死循环类测试触步数上限时持续分配，arena 高水位可达 GB
-    // 级；多 worker 并发下进程 RSS 包络被各 worker 当前高水位顶起，全量运行
-    // 必然 OOM。真合法峰值实测 259.6MiB（含 RegExp property-escapes/
-    // character-class 生成大表），512MiB 上限留 ~252MiB 余量；
-    // 主要作用是把失控测试的驻留面封顶到上限本身。
-    kernel_config.max_alloc_bytes = Some(512 * 1024 * 1024);
     Engine::new(kernel_config)
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    /// 分配上限常量与错误串单测的字面值机器耦合：改 cap 本钉必红。
-    #[test]
-    fn runner_alloc_cap_matches_error_string_tests() {
-        assert_eq!(build_runner_engine().kernel().config.max_alloc_bytes, Some(512 * 1024 * 1024));
-    }
-}