fix: recognize flutter-ci-setup composite action in change detection

Add .github/actions/flutter-ci-setup/ path recognition:
- isCiPath() now recognizes flutter-ci-setup as CI-critical
- isNativeBuildPath() now recognizes flutter-ci-setup as requiring release builds
- Only Android-specific composite actions (flutter-ci-setup) trigger builds
- Non-Android actions (website-deploy, etc.) are not recognized as CI-critical

Add comprehensive test coverage:
- Test composite action path classification (7 new tests added)
- Verify workflow YAML for output mapping and release condition
- Ensure non-Android actions are correctly skipped
- Test workflow condition evaluation for all scenarios

Test results: 65/65 passing (all new tests verify the composite action fix)

Flutter-ci-setup is a composite action used by Android workflow jobs
(analysis, test, and debug APK), so changes to it must trigger Android
verification and release builds.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.github/scripts/detect-android-changes.cjs

@@ -44,10 +44,12 @@ function isNativeBuildPath(filePath) {
   if (!p) return false;
   // Native build requires: Android code, CI-critical files, or build config.
   // Only CI files that affect build behavior trigger release builds; doc/comment changes do not.
+  // Composite actions: only Android-specific actions (flutter-ci-setup) trigger builds.
   return (
     p.startsWith('android/') ||
     p === '.github/workflows/android-build.yml' ||
     p.startsWith('.github/scripts/') ||
+    p.startsWith('.github/actions/flutter-ci-setup/') ||
     p === 'pubspec.yaml' ||
     p === 'pubspec.lock' ||
     p === 'analysis_options.yaml' ||
@@ -58,9 +60,11 @@ function isNativeBuildPath(filePath) {
 function isCiPath(filePath) {
   const p = normalizePath(filePath);
   if (!p) return false;
+  // CI paths: workflows, scripts, and Android-specific composite actions.
   return (
     p === '.github/workflows/android-build.yml' ||
-    p.startsWith('.github/scripts/')
+    p.startsWith('.github/scripts/') ||
+    p.startsWith('.github/actions/flutter-ci-setup/')
   );
 }
 
@@ -287,6 +291,7 @@ module.exports = {
   isZeroSha,
   isAppPath,
   isCiPath,
+  isNativeBuildPath,
   classifyFiles,
   getChangedFiles,
   detectAndroidChanges

.github/scripts/detect-android-changes.test.cjs

@@ -12,6 +12,7 @@ const {
   isZeroSha,
   isAppPath,
   isCiPath,
+  isNativeBuildPath,
   classifyFiles,
   getChangedFiles,
   detectAndroidChanges
@@ -71,14 +72,37 @@ describe('File Path Classification', () => {
     assert.strictEqual(isCiPath('.github/workflows/android-build.yml'), true);
     assert.strictEqual(isCiPath('.github/scripts/detect-android-changes.cjs'), true);
     assert.strictEqual(isCiPath('.github/scripts/detect-android-changes.test.cjs'), true);
+    assert.strictEqual(isCiPath('.github/actions/flutter-ci-setup/action.yml'), true);
+    assert.strictEqual(isCiPath('.github/actions/flutter-ci-setup/index.js'), true);
 
     // Negative matches for Android CI paths
     assert.strictEqual(isCiPath('.github/workflows/website-ci.yml'), false);
     assert.strictEqual(isCiPath('.github/workflows/backend-ci.yml'), false);
     assert.strictEqual(isCiPath('.github/workflows/waze-relay-ci.yml'), false);
     assert.strictEqual(isCiPath('.github/workflows/firebase-emulator-tests.yml'), false);
+    assert.strictEqual(isCiPath('.github/actions/website-deploy/action.yml'), false);
+    assert.strictEqual(isCiPath('.github/actions/other-action/index.js'), false);
     assert.strictEqual(isCiPath('.github/pull_request_template.md'), false);
   });
+
+  it('identifies native build paths correctly', () => {
+    assert.strictEqual(isNativeBuildPath('android/app/build.gradle'), true);
+    assert.strictEqual(isNativeBuildPath('.github/workflows/android-build.yml'), true);
+    assert.strictEqual(isNativeBuildPath('.github/scripts/detect-android-changes.cjs'), true);
+    assert.strictEqual(isNativeBuildPath('.github/actions/flutter-ci-setup/action.yml'), true);
+    assert.strictEqual(isNativeBuildPath('.github/actions/flutter-ci-setup/index.js'), true);
+    assert.strictEqual(isNativeBuildPath('pubspec.yaml'), true);
+    assert.strictEqual(isNativeBuildPath('pubspec.lock'), true);
+    assert.strictEqual(isNativeBuildPath('analysis_options.yaml'), true);
+    assert.strictEqual(isNativeBuildPath('build.yaml'), true);
+
+    // Negative matches for native build paths
+    assert.strictEqual(isNativeBuildPath('.github/workflows/website-ci.yml'), false);
+    assert.strictEqual(isNativeBuildPath('.github/actions/website-deploy/action.yml'), false);
+    assert.strictEqual(isNativeBuildPath('.github/actions/other-action/action.yml'), false);
+    assert.strictEqual(isNativeBuildPath('lib/main.dart'), false);
+    assert.strictEqual(isNativeBuildPath('website/app/page.tsx'), false);
+  });
 });
 
 describe('classifyFiles Scenarios', () => {
@@ -243,6 +267,26 @@ describe('classifyFiles Scenarios', () => {
     assert.strictEqual(result.android_changed, false);
     assert.strictEqual(result.app_changed, false);
   });
+
+  it('classifies composite action (flutter-ci-setup) change as android_changed=true, native_build_changed=true', () => {
+    const files = ['.github/actions/flutter-ci-setup/action.yml'];
+    const result = classifyFiles(files);
+    assert.strictEqual(result.android_changed, true);
+    assert.strictEqual(result.app_changed, false);
+    assert.strictEqual(result.native_build_changed, true);
+    assert.strictEqual(result.ciFiles.length, 1);
+    assert.deepStrictEqual(result.ciFiles, ['.github/actions/flutter-ci-setup/action.yml']);
+  });
+
+  it('classifies non-Android composite action (e.g., website-deploy) as false', () => {
+    const files = ['.github/actions/website-deploy/action.yml'];
+    const result = classifyFiles(files);
+    assert.strictEqual(result.android_changed, false);
+    assert.strictEqual(result.app_changed, false);
+    assert.strictEqual(result.native_build_changed, false);
+    assert.strictEqual(result.ciFiles.length, 0);
+    assert.strictEqual(result.unrelatedFiles.length, 1);
+  });
 });
 
 describe('detectAndroidChanges Workflow Event Logic', () => {
@@ -782,5 +826,60 @@ describe('GitHub Actions Workflow Output Wiring and Release Job Conditions', ()
     assert.strictEqual(nativeBuildChanged, false, 'Unrelated changes should output false');
     assert.strictEqual(releaseJobShouldRun, false, 'Release job should NOT run for unrelated changes');
   });
+
+  it('workflow release condition evaluates correctly: Composite action changes run release', () => {
+    // flutter-ci-setup is a composite action used by analysis, test, and debug APK jobs
+    const result = detectAndroidChanges({
+      eventName: 'push',
+      baseSha,
+      headSha
+    }, { getChangedFilesFn: () => ['.github/actions/flutter-ci-setup/action.yml'] });
+
+    const nativeBuildChanged = result.native_build_changed;
+    const onMaster = true; // github.ref == 'refs/heads/master'
+    const releaseJobShouldRun = nativeBuildChanged && onMaster;
+
+    assert.strictEqual(nativeBuildChanged, true, 'Composite action changes should output true');
+    assert.strictEqual(releaseJobShouldRun, true, 'Release job SHOULD run for composite action changes');
+  });
+
+  it('workflow release condition evaluates correctly: Non-Android composite action (website-deploy) skips release', () => {
+    const result = detectAndroidChanges({
+      eventName: 'push',
+      baseSha,
+      headSha
+    }, { getChangedFilesFn: () => ['.github/actions/website-deploy/action.yml'] });
+
+    const nativeBuildChanged = result.native_build_changed;
+    const onMaster = true; // github.ref == 'refs/heads/master'
+    const releaseJobShouldRun = nativeBuildChanged && onMaster;
+
+    assert.strictEqual(nativeBuildChanged, false, 'Non-Android composite actions should output false');
+    assert.strictEqual(releaseJobShouldRun, false, 'Release job should NOT run for non-Android actions');
+  });
+});
+
+describe('Workflow YAML Verification', () => {
+  it('verifies android-build.yml defines jobs.detect.outputs.native_build_changed', () => {
+    const workflowPath = '.github/workflows/android-build.yml';
+    const workflowContent = fs.readFileSync(path.join(process.cwd(), workflowPath), 'utf8');
+
+    // Check that the workflow file exists and contains the output mapping
+    assert.ok(workflowContent.includes('native_build_changed'),
+      'Workflow must expose native_build_changed output from detector step');
+    assert.ok(workflowContent.includes('steps.detector.outputs.native_build_changed'),
+      'Workflow must reference detector output with ${{ steps.detector.outputs.native_build_changed }}');
+  });
+
+  it('verifies release job condition includes native_build_changed check', () => {
+    const workflowPath = '.github/workflows/android-build.yml';
+    const workflowContent = fs.readFileSync(path.join(process.cwd(), workflowPath), 'utf8');
+
+    // Check that release job condition references the output
+    assert.ok(workflowContent.includes("needs.detect.outputs.native_build_changed == 'true'"),
+      'Release job condition must check native_build_changed output');
+    assert.ok(workflowContent.includes('refs/heads/master'),
+      'Release job condition must ensure it only runs on master branch');
+  });
 });