Add test workflow and document CI/CD setup

- Create .forgejo/workflows/test.yaml with basic hello world workflow
- Update README.md with CI/CD section explaining Forgejo Actions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.forgejo/workflows/test.yaml

@@ -0,0 +1,20 @@
+name: Test CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Hello World
+        run: |
+          echo "Hello from Forgejo Actions!"
+          echo "Runner: $(hostname)"
+          echo "Repository: ${{ gitea.repository }}"
+          echo "Branch: ${{ gitea.ref_name }}"

README.md

@@ -74,6 +74,10 @@ Hooks include:
 - **TOML**: taplo
 - **JSON**: prettier
 
+## CI/CD
+
+This repo uses [Forgejo Actions](https://forgejo.org/docs/latest/user/actions/) for CI/CD. Workflows live in `.forgejo/workflows/` (not `.github/workflows/`). The runner executes jobs in host mode within the Kubernetes cluster.
+
 ## Documentation
 
 Detailed documentation lives in my personal zettelkasten, which is not included in this repository. You can view the docs with: