Automate release publishing via GitHub Actions

Add a release workflow triggered on tag push that publishes to Maven
Central, Gradle Plugin Portal, and creates a GitHub Release. Simplify
CI snapshot publishing to use a single vanniktech publishToMavenCentral
task and pass secrets via env vars instead of -P flags.

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

Author: runningcode

.github/workflows/gradle-build.yml

@@ -16,9 +16,12 @@ jobs:
       name: Setup Gradle
     - name: Check Fladle
       run: ./gradlew assembleDebug assembleDebugAndroidTest printYml check :fladle-plugin:check
-    - name: Publish Marker Snapshot
+    - name: Publish Snapshot
       if: ${{ github.ref == 'refs/heads/master' && github.event_name != 'pull_request' }}
-      run: ./gradlew :fladle-plugin:publishFladlePluginMarkerMavenPublicationToMavenCentralRepository :fladle-plugin:publishFulladlePluginMarkerMavenPublicationToMavenCentralRepository -Pfladle.releaseMode -PmavenCentralUsername=${{ secrets.SONATYPE_USERNAME }} -PmavenCentralPassword=${{ secrets.SONATYPE_PASSWORD }}
-    - name: Publish Plugin Snapshot
-      if: ${{ github.ref == 'refs/heads/master' && github.event_name != 'pull_request' }}
-      run: ./gradlew :fladle-plugin:publishPluginMavenPublicationToMavenCentralRepository -Pfladle.releaseMode -PmavenCentralUsername=${{ secrets.SONATYPE_USERNAME }} -PmavenCentralPassword=${{ secrets.SONATYPE_PASSWORD }}
+      env:
+        ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USERNAME }}
+        ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}
+        ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_SIGNING_KEY }}
+        ORG_GRADLE_PROJECT_signingInMemoryKeyId: ${{ secrets.GPG_SIGNING_KEY_ID }}
+        ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.GPG_SIGNING_KEY_PASSWORD }}
+      run: ./gradlew :fladle-plugin:publishToMavenCentral --no-configuration-cache

.github/workflows/gradle-release.yml

@@ -0,0 +1,40 @@
+name: "Release"
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+jobs:
+  release:
+    name: "Publish Release"
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-java@v5
+        with:
+          java-version: "17"
+          distribution: "temurin"
+      - uses: gradle/actions/setup-gradle@v5
+      - name: Publish to Maven Central
+        env:
+          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USERNAME }}
+          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}
+          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_signingInMemoryKeyId: ${{ secrets.GPG_SIGNING_KEY_ID }}
+          ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.GPG_SIGNING_KEY_PASSWORD }}
+        run: ./gradlew :fladle-plugin:publishToMavenCentral --no-configuration-cache
+      - name: Publish to Gradle Plugin Portal
+        env:
+          GRADLE_PUBLISH_KEY: ${{ secrets.GRADLE_PUBLISH_KEY }}
+          GRADLE_PUBLISH_SECRET: ${{ secrets.GRADLE_PUBLISH_SECRET }}
+          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_SIGNING_KEY }}
+          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 GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: gh release create "${{ github.ref_name }}" --generate-notes

docs/releasing.md

@@ -36,16 +36,11 @@ git tag v{{ fladle.next_release }}
 git push origin v{{ fladle.next_release }}
 ```
 
-* Upload to Maven Central (this must run in three separate commands since they are from three different namespaces)
-``` bash
-./gradlew :fladle-plugin:publishFladlePluginMarkerMavenPublicationToMavenCentralRepository -Pfladle.release 
-./gradlew :fladle-plugin:publishFulladlePluginMarkerMavenPublicationToMavenCentralRepository -Pfladle.release 
-./gradlew :fladle-plugin:publishPluginMavenPublicationToMavenCentralRepository -Pfladle.release
-```
-* Upload to Gradle Plugin Portal
-```bash
-./gradlew :fladle-plugin:publishPlugins -Pfladle.releaseMode -Dorg.gradle.internal.publish.checksums.insecure=true
-```
+Pushing the tag automatically triggers the [release workflow](https://github.com/runningcode/fladle/actions/workflows/gradle-release.yml) which:
+
+1. Publishes to Maven Central
+2. Publishes to Gradle Plugin Portal
+3. Creates a GitHub Release with auto-generated notes
 
 * Release to Maven Central
     * Login to Maven Central Repository: [https://central.sonatype.com/](https://central.sonatype.com/)