diff --git a/clis/linux-do/topic-content.test.js b/clis/linux-do/topic-content.test.js
index d0dcd800e..3e4aa4dd9 100644
--- a/clis/linux-do/topic-content.test.js
+++ b/clis/linux-do/topic-content.test.js
@@ -51,9 +51,9 @@ describe('linux-do topic-content', () => {
         expect(command?.columns).toEqual(['content']);
     });
     it('keeps topic adapter as a summarized first-page reader after the split', () => {
-        const topicTs = fs.readFileSync(new URL('./topic.ts', import.meta.url), 'utf8');
-        expect(topicTs).not.toContain('main_only');
-        expect(topicTs).toContain('slice(0, 200)');
-        expect(topicTs).toContain('帖子首页摘要和回复');
+        const topicSource = fs.readFileSync(new URL('./topic.js', import.meta.url), 'utf8');
+        expect(topicSource).not.toContain('main_only');
+        expect(topicSource).toContain('slice(0, 200)');
+        expect(topicSource).toContain('帖子首页摘要和回复');
     });
 });
diff --git a/scripts/check-doc-coverage.sh b/scripts/check-doc-coverage.sh
index 9174721f3..aea12bdbc 100755
--- a/scripts/check-doc-coverage.sh
+++ b/scripts/check-doc-coverage.sh
@@ -30,6 +30,11 @@ for adapter_dir in "$SRC_DIR"/*/; do
   adapter_name="$(basename "$adapter_dir")"
   # Skip internal directories (e.g., _shared)
   [[ "$adapter_name" == _* ]] && continue
+  # Skip helper-only directories that do not expose any top-level adapter commands.
+  top_level_files="$(find "$adapter_dir" -maxdepth 1 -type f | awk -F/ '{print $NF}')"
+  if [[ -n "$top_level_files" ]] && ! printf '%s\n' "$top_level_files" | grep -qv '^_'; then
+    continue
+  fi
   total=$((total + 1))
 
   # Check if doc exists in browser/ or desktop/ subdirectories
diff --git a/src/ci-regressions.test.ts b/src/ci-regressions.test.ts
new file mode 100644
index 000000000..ebf6dc160
--- /dev/null
+++ b/src/ci-regressions.test.ts
@@ -0,0 +1,51 @@
+import { execFileSync } from 'node:child_process';
+import * as fs from 'node:fs';
+import * as os from 'node:os';
+import * as path from 'node:path';
+import { afterEach, describe, expect, it } from 'vitest';
+
+const tempDirs: string[] = [];
+
+afterEach(() => {
+  for (const dir of tempDirs.splice(0)) {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+});
+
+describe('CI regression coverage', () => {
+  it('ignores helper-only adapter directories when checking docs coverage', () => {
+    const fixtureRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'opencli-doc-coverage-'));
+    tempDirs.push(fixtureRoot);
+
+    const scriptsDir = path.join(fixtureRoot, 'scripts');
+    const clisDir = path.join(fixtureRoot, 'clis', 'slock');
+    const docsBrowserDir = path.join(fixtureRoot, 'docs', 'adapters', 'browser');
+    const docsDesktopDir = path.join(fixtureRoot, 'docs', 'adapters', 'desktop');
+
+    fs.mkdirSync(scriptsDir, { recursive: true });
+    fs.mkdirSync(clisDir, { recursive: true });
+    fs.mkdirSync(docsBrowserDir, { recursive: true });
+    fs.mkdirSync(docsDesktopDir, { recursive: true });
+
+    fs.copyFileSync(
+      path.join(process.cwd(), 'scripts', 'check-doc-coverage.sh'),
+      path.join(scriptsDir, 'check-doc-coverage.sh'),
+    );
+    fs.writeFileSync(
+      path.join(clisDir, '_utils.js'),
+      'export const helper = () => "noop";\n',
+    );
+
+    const output = execFileSync(
+      'bash',
+      [path.join(scriptsDir, 'check-doc-coverage.sh'), '--strict'],
+      {
+        cwd: fixtureRoot,
+        encoding: 'utf8',
+      },
+    );
+
+    expect(output).toContain('Doc Coverage: 0/0 adapters documented');
+    expect(output).toContain('All adapters have documentation');
+  });
+});
diff --git a/vitest.config.ts b/vitest.config.ts
index 08834de62..e05db4a7a 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -9,7 +9,7 @@ export default defineConfig({
         test: {
           name: 'unit',
           include: ['src/**/*.test.ts'],
-          exclude: ['clis/**/*.test.ts'],
+          exclude: ['src/clis/**/*.test.ts'],
           sequence: { groupOrder: 0 },
         },
       },
@@ -23,7 +23,7 @@ export default defineConfig({
       {
         test: {
           name: 'adapter',
-          include: ['clis/**/*.test.ts'],
+          include: ['clis/**/*.test.js', 'src/clis/**/*.test.ts'],
           sequence: { groupOrder: 1 },
         },
       },