fix(ci): Use version for release tag instead of branch name

When the release workflow is triggered via workflow_dispatch, the
release and tag were named after the branch (e.g., "master") instead of
the actual version. Now the version is extracted from build.gradle.kts
and used for both the tag and the GitHub release.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: runningcode

.github/workflows/gradle-release.yml

@@ -13,6 +13,15 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v6
+      - name: Determine release version
+        id: version
+        run: |
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            echo "tag=${{ github.ref_name }}" >> "$GITHUB_OUTPUT"
+          else
+            version=$(grep '^version' fladle-plugin/build.gradle.kts | sed 's/version = "//;s/"//')
+            echo "tag=v${version}" >> "$GITHUB_OUTPUT"
+          fi
       - uses: actions/setup-java@v5
         with:
           java-version: "17"
@@ -34,7 +43,14 @@ jobs:
           ORG_GRADLE_PROJECT_signingInMemoryKeyId: ${{ secrets.GPG_SIGNING_KEY_ID }}
           ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.GPG_SIGNING_KEY_PASSWORD }}
         run: ./gradlew :fladle-plugin:publishPlugins
+      - name: Create tag if needed
+        run: |
+          tag="${{ steps.version.outputs.tag }}"
+          if ! git rev-parse "$tag" >/dev/null 2>&1; then
+            git tag "$tag"
+            git push origin "$tag"
+          fi
       - name: Create GitHub Release
         env:
           GH_TOKEN: ${{ github.token }}
-        run: gh release create "${{ github.ref_name }}" --generate-notes
+        run: gh release create "${{ steps.version.outputs.tag }}" --generate-notes