Ignore pub.dev's samples-vs-example warning during publish

.github/workflows/publish.yml

@@ -2,6 +2,13 @@
 # Must be triggered by a tag push — pub.dev's trusted-publishing OIDC check rejects any
 # other ref type (e.g. workflow_dispatch on a branch), per
 # https://dart.dev/tools/pub/automated-publishing.
+#
+# Inlines dart-lang/setup-dart's reusable publish workflow (rather than calling it via
+# `uses:`) so we can pass --ignore-warnings to `dart pub publish`. Pub's package-layout
+# check always flags our top-level samples/ dir ("rename to example") regardless of
+# whether an example/ dir also exists, and in non-interactive CI any warning otherwise
+# fails the dry run. Keep the steps below in sync with
+# https://github.com/dart-lang/setup-dart/blob/main/.github/workflows/publish.yml.
 
 name: 📦 Publish to pub.dev
 
@@ -12,6 +19,22 @@ on:
 
 jobs:
   publish:
+    name: 'Publish to pub.dev'
+    runs-on: ubuntu-latest
     permissions:
       id-token: write # Required for authentication using OIDC
-    uses: dart-lang/setup-dart/.github/workflows/publish.yml@65eb853c7ba17dde3be364c3d2858773e7144260 # v1
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+        with:
+          persist-credentials: false
+      - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
+      - uses: flutter-actions/setup-flutter@d4e97a6e7467ef062618c9af927f90bc9651b876
+
+      - name: Install dependencies
+        run: dart pub get
+
+      - name: Publish - dry run
+        run: dart pub publish --dry-run --ignore-warnings
+
+      - name: Publish to pub.dev
+        run: dart pub publish -f