docs: localize workflow guidance

tests/test_manifest.py

@@ -11,6 +11,7 @@ class WorkflowManifestTests(unittest.TestCase):
         manifest = get_manifest()
 
         self.assertEqual("workflow", manifest.id)
+        self.assertEqual("0.1.21", manifest.version)
         self.assertEqual(("workflow_engine",), manifest.dependencies)
         self.assertEqual(
             {"workflow.definition_graph", "workflow.definition_catalogue", "workflow.bpmn_interchange"},
@@ -38,6 +39,13 @@ class WorkflowManifestTests(unittest.TestCase):
             manifest.frontend.package_name if manifest.frontend else None,
         )
 
+        for topic in manifest.documentation:
+            german = topic.translations.get("de", {})
+            self.assertTrue(
+                all(german.get(field) for field in ("title", "summary", "body")),
+                topic.id,
+            )
+
     def test_editor_exposes_semantic_help_without_replacing_static_help(self) -> None:
         root = Path(__file__).parents[1]
         page = (root / "webui/src/features/workflow/WorkflowPage.tsx").read_text()