Add bash linter workflow

Using the checkout@v4 action on each push and pull request

.forgejo/workflows/lint-bash.yml

@@ -0,0 +1,31 @@
+name: Lint Bash Scripts
+
+on:
+  push:
+    paths:
+      - '**/*.sh'
+  pull_request:
+    paths:
+      - '**/*.sh'
+
+jobs:
+  lint-bash:
+    runs-on: docker
+    container:
+      image: node:16-bullseye  # Node.js pre-installed, based on Debian
+
+    steps:
+      - name: Checkout Code
+        uses: https://code.forgejo.org/actions/checkout@v4
+        with:
+          fetch-depth: 0  # Fetch the entire history to avoid REST API reliance
+
+      - name: Install ShellCheck
+        run: |
+          apt-get update && apt-get install -y shellcheck
+
+      - name: Lint Bash Scripts
+        run: |
+          echo "Linting Bash scripts..."
+          find . -name '*.sh' -print0 | xargs -0 shellcheck
+