diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db5589c..be718fe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -101,7 +101,7 @@ jobs:
         # Owns the rev derivation, the rev-keyed tools cache, the
         # install, and the pins gate; conformance-ct::_ct-tools
         # recognizes the stamped install and does not repeat it.
-        uses: polymorph-components/polymorph-test/actions/setup@76c094576076284c1a7d0ea1b7bb724e9e7384a5
+        uses: polymorph-components/polymorph-test/actions/setup@eabd159de34e38a6f2f32204ceb52392555f32d8
         with:
           js-locks: |
             conformance/driver-ct/jco/package-lock.json
@@ -161,7 +161,7 @@ jobs:
       # input polices the `uses:` refs against the pin.
       - name: Publish the conformance matrix
         if: always() && hashFiles('conformance/driver-ct/results/*.jsonl') != ''
-        uses: polymorph-components/polymorph-test/actions/aggregate@76c094576076284c1a7d0ea1b7bb724e9e7384a5
+        uses: polymorph-components/polymorph-test/actions/aggregate@eabd159de34e38a6f2f32204ceb52392555f32d8
         with:
           lock: conformance/guest-ct/tests.lock
           manifest: conformance/driver-ct/targets.toml
@@ -176,7 +176,7 @@ jobs:
 
       - name: Publish the signing conformance matrix
         if: always() && hashFiles('conformance/driver-ct/results/*.jsonl') != ''
-        uses: polymorph-components/polymorph-test/actions/aggregate@76c094576076284c1a7d0ea1b7bb724e9e7384a5
+        uses: polymorph-components/polymorph-test/actions/aggregate@eabd159de34e38a6f2f32204ceb52392555f32d8
         with:
           lock: conformance/signing-guest-ct/tests.lock
           manifest: conformance/driver-ct/targets-signing.toml
diff --git a/Cargo.lock b/Cargo.lock
index ff1bf73..8298748 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -336,7 +336,7 @@ dependencies = [
 [[package]]
 name = "component-test-core"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "arcstr",
  "serde",
@@ -345,7 +345,7 @@ dependencies = [
 [[package]]
 name = "component-test-formats"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "anyhow",
  "component-test-core",
@@ -360,7 +360,7 @@ dependencies = [
 [[package]]
 name = "component-test-results"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "anyhow",
  "component-test-core",
@@ -371,7 +371,7 @@ dependencies = [
 [[package]]
 name = "component-test-runner"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "anyhow",
  "component-test-core",
@@ -387,7 +387,7 @@ dependencies = [
 [[package]]
 name = "component-test-sdk"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "component-test-core",
  "component-test-sdk-macro",
@@ -399,7 +399,7 @@ dependencies = [
 [[package]]
 name = "component-test-sdk-macro"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-test?rev=76c094576076284c1a7d0ea1b7bb724e9e7384a5#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+source = "git+https://github.com/polymorph-components/polymorph-test?rev=eabd159de34e38a6f2f32204ceb52392555f32d8#eabd159de34e38a6f2f32204ceb52392555f32d8"
 dependencies = [
  "component-test-core",
  "proc-macro2",
@@ -2457,7 +2457,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
 dependencies = [
  "fastrand",
- "getrandom 0.3.4",
+ "getrandom 0.4.3",
  "once_cell",
  "rustix",
  "windows-sys 0.61.2",
diff --git a/Cargo.toml b/Cargo.toml
index edbe85d..639760c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,8 +26,8 @@ resolver = "2"
 # override — see AGENTS.md "Build & run". Publishing component-test
 # to a registry retires this arrangement.
 [workspace.dependencies]
-component-test-sdk = { git = "https://github.com/polymorph-components/polymorph-test", rev = "76c094576076284c1a7d0ea1b7bb724e9e7384a5" }
-component-test-runner = { git = "https://github.com/polymorph-components/polymorph-test", rev = "76c094576076284c1a7d0ea1b7bb724e9e7384a5" }
+component-test-sdk = { git = "https://github.com/polymorph-components/polymorph-test", rev = "eabd159de34e38a6f2f32204ceb52392555f32d8" }
+component-test-runner = { git = "https://github.com/polymorph-components/polymorph-test", rev = "eabd159de34e38a6f2f32204ceb52392555f32d8" }
 
 # The mutation run's profile (`just mutants`): dependencies optimized —
 # wasmtime and the RustCrypto cores are compiled once, at baseline, and make
diff --git a/conformance/driver-ct/jco/package-lock.json b/conformance/driver-ct/jco/package-lock.json
index efc925e..ef767ba 100644
--- a/conformance/driver-ct/jco/package-lock.json
+++ b/conformance/driver-ct/jco/package-lock.json
@@ -8,7 +8,7 @@
       "dependencies": {
         "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
         "@bytecodealliance/preview2-shim": "0.17.9",
-        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
+        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8",
         "playwright-core": "1.62.1"
       }
     },
@@ -451,8 +451,8 @@
     },
     "node_modules/@polymorph/component-test-js": {
       "version": "0.2.0",
-      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
-      "integrity": "sha512-nvkB8aRSsA/B+eQnIrH92Uj1v4qmzj5a9N7lylDhDMqc97IeWPox4eZqTtSX6mxl0lsiotZeU9z0u/BcLBVuqg==",
+      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#eabd159de34e38a6f2f32204ceb52392555f32d8",
+      "integrity": "sha512-s0WkYdtIS1chajOwsrjC5vfpYY8bg4sQ9FGNKtWWU0D8ST7EpoZOBEYP1R9JrFzxp4MKLYxbu+GQeYW+Akh1Hw==",
       "license": "Apache-2.0 WITH LLVM-exception",
       "bin": {
         "component-test-jco-transpile": "js/jco-transpile.mjs"
diff --git a/conformance/driver-ct/jco/package.json b/conformance/driver-ct/jco/package.json
index dd9dfda..1c827a1 100644
--- a/conformance/driver-ct/jco/package.json
+++ b/conformance/driver-ct/jco/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
     "@bytecodealliance/preview2-shim": "0.17.9",
-    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
+    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8",
     "playwright-core": "1.62.1"
   }
 }
diff --git a/conformance/driver-ct/jco/worker-node.mjs b/conformance/driver-ct/jco/worker-node.mjs
index d2b8717..f2d2622 100644
--- a/conformance/driver-ct/jco/worker-node.mjs
+++ b/conformance/driver-ct/jco/worker-node.mjs
@@ -4,25 +4,20 @@
 // suite-order index so the parent can restore suite order — back through
 // `parentPort`, then reporting the shard's counts. Workers inherit the
 // parent's execArgv, so `--experimental-wasm-jspi` carries over.
-import { readFile, readdir } from "node:fs/promises";
 import { fileURLToPath } from "node:url";
 import { parentPort, workerData } from "node:worker_threads";
 import { cli, clocks, io, random, filesystem } from "@bytecodealliance/preview2-shim";
 import { inventoryLookup, runCases } from "@polymorph/component-test-js/harness";
+import { loadCoreModules } from "@polymorph/component-test-js/node-runner";
 import { Context } from "../context.js";
 import { instantiateSuite } from "./host-imports.mjs";
 
 const { suite, missing, only, shard } = workerData;
 
-const generatedDir = new URL("./generated/", import.meta.url);
-const coreBytes = [];
-const modules = new Map();
-for (const name of (await readdir(fileURLToPath(generatedDir))).sort()) {
-  if (!name.startsWith(`${suite}.core`) || !name.endsWith(".wasm")) continue;
-  const bytes = new Uint8Array(await readFile(new URL(`./generated/${name}`, import.meta.url)));
-  coreBytes.push(bytes);
-  modules.set(name, await WebAssembly.compile(bytes));
-}
+const { modules, coreBytes } = await loadCoreModules(
+  fileURLToPath(new URL("./generated/", import.meta.url)),
+  suite,
+);
 const tagsOf = inventoryLookup(coreBytes);
 const { instantiate } = await import(`./generated/${suite}.js`);
 const tests = await instantiateSuite({
diff --git a/examples/jco-demo/package-lock.json b/examples/jco-demo/package-lock.json
index fa276b9..45a743f 100644
--- a/examples/jco-demo/package-lock.json
+++ b/examples/jco-demo/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.1.0",
       "devDependencies": {
         "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
-        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8"
       }
     },
     "node_modules/@bytecodealliance/jco-transpile": {
@@ -473,8 +473,8 @@
     },
     "node_modules/@polymorph/component-test-js": {
       "version": "0.2.0",
-      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
-      "integrity": "sha512-nvkB8aRSsA/B+eQnIrH92Uj1v4qmzj5a9N7lylDhDMqc97IeWPox4eZqTtSX6mxl0lsiotZeU9z0u/BcLBVuqg==",
+      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#eabd159de34e38a6f2f32204ceb52392555f32d8",
+      "integrity": "sha512-s0WkYdtIS1chajOwsrjC5vfpYY8bg4sQ9FGNKtWWU0D8ST7EpoZOBEYP1R9JrFzxp4MKLYxbu+GQeYW+Akh1Hw==",
       "dev": true,
       "license": "Apache-2.0 WITH LLVM-exception",
       "bin": {
diff --git a/examples/jco-demo/package.json b/examples/jco-demo/package.json
index a299853..936988d 100644
--- a/examples/jco-demo/package.json
+++ b/examples/jco-demo/package.json
@@ -12,6 +12,6 @@
   },
   "devDependencies": {
     "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
-    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8"
   }
 }
diff --git a/js/componentize/wpt/parity/package-lock.json b/js/componentize/wpt/parity/package-lock.json
index 7460f74..add1582 100644
--- a/js/componentize/wpt/parity/package-lock.json
+++ b/js/componentize/wpt/parity/package-lock.json
@@ -10,7 +10,7 @@
       "devDependencies": {
         "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
         "@bytecodealliance/preview2-shim": "^0.19.0",
-        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
+        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8",
         "playwright-core": "^1.62.1"
       }
     },
@@ -475,8 +475,8 @@
     },
     "node_modules/@polymorph/component-test-js": {
       "version": "0.2.0",
-      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
-      "integrity": "sha512-nvkB8aRSsA/B+eQnIrH92Uj1v4qmzj5a9N7lylDhDMqc97IeWPox4eZqTtSX6mxl0lsiotZeU9z0u/BcLBVuqg==",
+      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#eabd159de34e38a6f2f32204ceb52392555f32d8",
+      "integrity": "sha512-s0WkYdtIS1chajOwsrjC5vfpYY8bg4sQ9FGNKtWWU0D8ST7EpoZOBEYP1R9JrFzxp4MKLYxbu+GQeYW+Akh1Hw==",
       "dev": true,
       "license": "Apache-2.0 WITH LLVM-exception",
       "bin": {
diff --git a/js/componentize/wpt/parity/package.json b/js/componentize/wpt/parity/package.json
index 57c585b..2057cba 100644
--- a/js/componentize/wpt/parity/package.json
+++ b/js/componentize/wpt/parity/package.json
@@ -18,6 +18,6 @@
     "@bytecodealliance/jco-transpile": "https://github.com/lann/jco/releases/download/jco-transpile-0.6.2-fa6990d/bytecodealliance-jco-transpile-0.6.2.tgz",
     "@bytecodealliance/preview2-shim": "^0.19.0",
     "playwright-core": "^1.62.1",
-    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8"
   }
 }
diff --git a/js/jco/package-lock.json b/js/jco/package-lock.json
index bbdb347..86c0cfb 100644
--- a/js/jco/package-lock.json
+++ b/js/jco/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.1.0",
       "devDependencies": {
         "@bytecodealliance/jco-transpile": "0.5.2",
-        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
+        "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8",
         "typescript": "^5.9.3"
       }
     },
@@ -467,8 +467,8 @@
     },
     "node_modules/@polymorph/component-test-js": {
       "version": "0.2.0",
-      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#76c094576076284c1a7d0ea1b7bb724e9e7384a5",
-      "integrity": "sha512-nvkB8aRSsA/B+eQnIrH92Uj1v4qmzj5a9N7lylDhDMqc97IeWPox4eZqTtSX6mxl0lsiotZeU9z0u/BcLBVuqg==",
+      "resolved": "git+ssh://git@github.com/polymorph-components/polymorph-test.git#eabd159de34e38a6f2f32204ceb52392555f32d8",
+      "integrity": "sha512-s0WkYdtIS1chajOwsrjC5vfpYY8bg4sQ9FGNKtWWU0D8ST7EpoZOBEYP1R9JrFzxp4MKLYxbu+GQeYW+Akh1Hw==",
       "dev": true,
       "license": "Apache-2.0 WITH LLVM-exception",
       "bin": {
diff --git a/js/jco/package.json b/js/jco/package.json
index c25c157..9c447ed 100644
--- a/js/jco/package.json
+++ b/js/jco/package.json
@@ -13,6 +13,6 @@
   "devDependencies": {
     "@bytecodealliance/jco-transpile": "0.5.2",
     "typescript": "^5.9.3",
-    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#76c094576076284c1a7d0ea1b7bb724e9e7384a5"
+    "@polymorph/component-test-js": "github:polymorph-components/polymorph-test#eabd159de34e38a6f2f32204ceb52392555f32d8"
   }
 }