diff --git a/extensions/canvas/scripts/copy-a2ui.test.ts b/extensions/canvas/scripts/copy-a2ui.test.ts
index 8ea2ea5adf5..16f30c63f27 100644
--- a/extensions/canvas/scripts/copy-a2ui.test.ts
+++ b/extensions/canvas/scripts/copy-a2ui.test.ts
@@ -7,15 +7,6 @@ import { copyA2uiAssets } from "./copy-a2ui.mjs";
 const ORIGINAL_SKIP_MISSING = process.env.OPENCLAW_A2UI_SKIP_MISSING;
 const ORIGINAL_SPARSE_PROFILE = process.env.OPENCLAW_SPARSE_PROFILE;
 
-async function withTempDir(prefix: string, run: (dir: string) => Promise<void>): Promise<void> {
-  const dir = await fs.mkdtemp(path.join(os.tmpdir(), prefix));
-  try {
-    await run(dir);
-  } finally {
-    await fs.rm(dir, { recursive: true, force: true });
-  }
-}
-
 describe("canvas a2ui copy", () => {
   beforeEach(() => {
     delete process.env.OPENCLAW_A2UI_SKIP_MISSING;
diff --git a/scripts/deadcode-unused-files.allowlist.mjs b/scripts/deadcode-unused-files.allowlist.mjs
index e5d4670b2f8..887f94800c3 100644
--- a/scripts/deadcode-unused-files.allowlist.mjs
+++ b/scripts/deadcode-unused-files.allowlist.mjs
@@ -2,8 +2,14 @@
 // generated/build inputs, manifest-discovered plugin surfaces, live-test
 // helpers, or package bridge files that static production scanning cannot see.
 export const KNIP_UNUSED_FILE_ALLOWLIST = [
+  "extensions/acpx/src/runtime-internals/error-format.mjs",
+  "extensions/acpx/src/runtime-internals/mcp-command-line.mjs",
+  "extensions/acpx/src/runtime-internals/mcp-proxy.mjs",
+  "extensions/canvas/src/host/a2ui-app/bootstrap.js",
+  "extensions/canvas/src/host/a2ui-app/rolldown.config.mjs",
   "extensions/diffs/src/viewer-client.ts",
   "extensions/diffs/src/viewer-payload.ts",
+  "extensions/matrix/src/plugin-entry.runtime.js",
   "extensions/memory-core/src/memory-tool-manager-mock.ts",
   "src/agents/subagent-registry.runtime.ts",
   "src/auto-reply/inbound.group-require-mention-test-plugins.ts",