goldenChat base source add

ta4j-master/.github/workflows/check.yml

@@ -0,0 +1,39 @@
+name: Check License Headers
+permissions:
+  contents: read
+
+on:
+  pull_request:
+    branches:
+      - master
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Check License Headers
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Cache Maven packages
+        uses: actions/cache@v5
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+
+      - name: Set up Java
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: 25
+          cache: maven
+
+      - name: Check license headers
+        run: xvfb-run mvn -B license:check