diff --git a/.github/scripts/__tests__/pr-triage-classify.test.js b/.github/scripts/__tests__/pr-triage-classify.test.js
index 53d3f16242..cf3bef3256 100644
--- a/.github/scripts/__tests__/pr-triage-classify.test.js
+++ b/.github/scripts/__tests__/pr-triage-classify.test.js
@@ -50,6 +50,11 @@ describe('isTestFile', () => {
     assert.ok(isTestFile('packages/app/tests/e2e/navigation.ts'));
   });
 
+  it('matches Storybook story files', () => {
+    assert.ok(isTestFile('packages/app/src/components/Alert.stories.tsx'));
+    assert.ok(isTestFile('packages/app/src/HDXMultiSeriesTable.stories.ts'));
+  });
+
   it('matches the E2E-only ClickHouse fixture, but not its shipped siblings', () => {
     assert.ok(isTestFile('docker/clickhouse/local/init-db-e2e.sh'));
     // config.xml / users.xml are copied into the all-in-one image — production config
diff --git a/.github/scripts/pr-triage-classify.js b/.github/scripts/pr-triage-classify.js
index f7ee056bd5..3402b157c4 100644
--- a/.github/scripts/pr-triage-classify.js
+++ b/.github/scripts/pr-triage-classify.js
@@ -78,6 +78,9 @@ const TEST_FILE_PATTERNS = [
   /\/__tests__\//,
   /\.test\.[jt]sx?$/,
   /\.spec\.[jt]sx?$/,
+  // Storybook stories are dev-only fixtures — never shipped in the app bundle,
+  // so they carry no production risk and should not drive the tier.
+  /\.stories\.[jt]sx?$/,
   /^packages\/app\/tests\//,
   // E2E-only ClickHouse fixture, mounted solely by packages/app/tests/e2e. Its
   // siblings (config.xml, users.xml) ship in the image and stay critical.