ci: build AppImage with Gitea Actions

tests/test_gitea_actions_workflow.py

@@ -0,0 +1,25 @@
+"""Regression checks for the AppImage Gitea Actions workflow."""
+
+from pathlib import Path
+import unittest
+
+
+ROOT = Path(__file__).resolve().parents[1]
+WORKFLOW = ROOT / ".gitea" / "workflows" / "build-appimage.yaml"
+
+
+class GiteaActionsWorkflowTests(unittest.TestCase):
+    def test_build_workflow_creates_and_uploads_the_appimage(self) -> None:
+        workflow = WORKFLOW.read_text()
+
+        self.assertIn("on:", workflow)
+        self.assertIn("workflow_dispatch:", workflow)
+        self.assertIn("runs-on: ubuntu-latest", workflow)
+        self.assertIn("container: node:24-trixie", workflow)
+        self.assertIn("./packaging/build-appimage.sh", workflow)
+        self.assertIn("actions/upload-artifact@v4", workflow)
+        self.assertIn("path: build/Korin-Timer.AppImage", workflow)
+
+
+if __name__ == "__main__":
+    unittest.main()