Add jitpack

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Build & check
+        run: ./gradlew build
+
+      - name: Upload JAR artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: jellylink-jar
+          path: build/libs/*.jar

.github/workflows/release.yml

@@ -0,0 +1,60 @@
+name: Release
+
+on:
+  push:
+    branches: [master]
+
+# Prevent concurrent releases
+concurrency:
+  group: release
+  cancel-in-progress: false
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # full history for tag checks
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Extract version from build.gradle.kts
+        id: version
+        run: |
+          VERSION=$(grep -oP 'version\s*=\s*"\K[^"]+' build.gradle.kts)
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "Detected version: $VERSION"
+
+      - name: Check if tag already exists
+        id: tag_check
+        run: |
+          if git rev-parse "v${{ steps.version.outputs.version }}" >/dev/null 2>&1; then
+            echo "exists=true" >> "$GITHUB_OUTPUT"
+            echo "Tag v${{ steps.version.outputs.version }} already exists — skipping release."
+          else
+            echo "exists=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Build
+        if: steps.tag_check.outputs.exists == 'false'
+        run: ./gradlew build
+
+      - name: Create tag and GitHub release
+        if: steps.tag_check.outputs.exists == 'false'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: v${{ steps.version.outputs.version }}
+          name: v${{ steps.version.outputs.version }}
+          generate_release_notes: true
+          files: build/libs/*.jar