diff --git a/package.json b/package.json
index 368ebc2e8fc..4e4b49777be 100644
--- a/package.json
+++ b/package.json
@@ -1324,8 +1324,8 @@
     "docs:list": "node scripts/docs-list.js",
     "docs:spellcheck": "bash scripts/docs-spellcheck.sh",
     "docs:spellcheck:fix": "bash scripts/docs-spellcheck.sh --write",
-    "dup:check": "jscpd src extensions scripts packages ui apps qa openclaw.mjs knip.config.ts tsdown.config.ts vitest.config.ts --format typescript,javascript --pattern \"**/*.{ts,tsx,js,mjs,cjs}\" --gitignore --noSymlinks --ignore \"**/*.test.ts,**/*.test.tsx,**/*.test.js,**/*.e2e.test.ts,**/*.live.test.ts,extensions/qa-matrix/src/shared/**,extensions/qa-matrix/src/report.ts,extensions/qa-matrix/src/docker-runtime.ts,extensions/qa-matrix/src/cli-paths.ts,**/node_modules/**,**/dist/**,**/.git/**,**/coverage/**,**/build/**,**/.build/**,**/.artifacts/**,vendor/**\" --min-lines 50 --min-tokens 300 --reporters console",
-    "dup:check:json": "jscpd src extensions scripts packages ui apps qa openclaw.mjs knip.config.ts tsdown.config.ts vitest.config.ts --format typescript,javascript --pattern \"**/*.{ts,tsx,js,mjs,cjs}\" --gitignore --noSymlinks --ignore \"**/*.test.ts,**/*.test.tsx,**/*.test.js,**/*.e2e.test.ts,**/*.live.test.ts,extensions/qa-matrix/src/shared/**,extensions/qa-matrix/src/report.ts,extensions/qa-matrix/src/docker-runtime.ts,extensions/qa-matrix/src/cli-paths.ts,**/node_modules/**,**/dist/**,**/.git/**,**/coverage/**,**/build/**,**/.build/**,**/.artifacts/**,vendor/**\" --min-lines 50 --min-tokens 300 --reporters json --output .artifacts/jscpd",
+    "dup:check": "node scripts/check-duplicates.mjs",
+    "dup:check:json": "node scripts/check-duplicates.mjs --json",
     "format": "oxfmt --write --threads=1",
     "format:all": "pnpm format && pnpm format:swift",
     "format:check": "oxfmt --check --threads=1",
diff --git a/scripts/check-duplicates.mjs b/scripts/check-duplicates.mjs
new file mode 100644
index 00000000000..ab3cc87209e
--- /dev/null
+++ b/scripts/check-duplicates.mjs
@@ -0,0 +1,112 @@
+#!/usr/bin/env node
+import { spawnSync } from "node:child_process";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const jscpdBin = path.join(repoRoot, "node_modules", "jscpd", "bin", "jscpd");
+
+const targets = [
+  "src",
+  "extensions",
+  "scripts",
+  "packages",
+  "ui",
+  "apps",
+  "qa",
+  "openclaw.mjs",
+  "knip.config.ts",
+  "tsdown.config.ts",
+  "vitest.config.ts",
+];
+
+const generatedIgnores = [
+  "extensions/qa-matrix/src/shared/**",
+  "extensions/qa-matrix/src/report.ts",
+  "extensions/qa-matrix/src/docker-runtime.ts",
+  "extensions/qa-matrix/src/cli-paths.ts",
+  "**/node_modules/**",
+  "**/dist/**",
+  "**/.git/**",
+  "**/coverage/**",
+  "**/build/**",
+  "**/.build/**",
+  "**/.artifacts/**",
+  "vendor/**",
+];
+
+const testIgnores = [
+  "**/*.test.ts",
+  "**/*.test.tsx",
+  "**/*.test.js",
+  "**/*.e2e.test.ts",
+  "**/*.live.test.ts",
+];
+
+const commonArgs = [
+  "--format",
+  "typescript,javascript",
+  "--gitignore",
+  "--noSymlinks",
+  "--min-lines",
+  "50",
+  "--min-tokens",
+  "300",
+];
+
+const json = process.argv.includes("--json");
+
+function reportArgs(name) {
+  if (!json) {
+    return ["--reporters", "console"];
+  }
+  return ["--reporters", "json", "--output", path.join(".artifacts", "jscpd", name)];
+}
+
+const scans = [
+  {
+    name: "production",
+    pattern: "**/*.{ts,tsx,js,mjs,cjs}",
+    ignore: [...testIgnores, ...generatedIgnores],
+  },
+  {
+    name: "tests",
+    pattern: "**/*.{test,e2e.test,live.test}.{ts,tsx,js}",
+    ignore: generatedIgnores,
+  },
+];
+
+let failed = false;
+for (const scan of scans) {
+  console.log(`\n[dup:check] ${scan.name}`);
+  const result = spawnSync(
+    process.execPath,
+    [
+      "--max-old-space-size=8192",
+      jscpdBin,
+      ...targets,
+      ...commonArgs,
+      "--pattern",
+      scan.pattern,
+      "--ignore",
+      scan.ignore.join(","),
+      ...reportArgs(scan.name),
+    ],
+    {
+      cwd: repoRoot,
+      env: process.env,
+      stdio: "inherit",
+    },
+  );
+  if (result.status !== 0) {
+    failed = true;
+  }
+  if (result.error) {
+    console.error(result.error.message);
+    failed = true;
+  }
+}
+
+if (failed) {
+  process.exit(1);
+}