docs(docs): complete German reference coverage

tests/test_public_export.py

@@ -6,6 +6,7 @@ import unittest
 from pathlib import Path
 
 from govoplan_core.core.modules import DocumentationTopic, ModuleManifest
+from govoplan_docs.backend.manifest import get_manifest as get_docs_manifest
 from govoplan_docs.public_export import (
     ManifestSource,
     build_public_catalog,
@@ -16,6 +17,16 @@ from govoplan_docs.public_export import (
 
 
 class PublicDocumentationExportTests(unittest.TestCase):
+    def test_docs_manifest_has_complete_german_public_coverage(self) -> None:
+        module = build_public_catalog(
+            (ManifestSource(get_docs_manifest()),)
+        )["modules"][0]
+
+        self.assertEqual(9, module["coverage"]["topic_count"])
+        self.assertEqual(0, module["coverage"]["missing_german_topic_count"])
+        self.assertEqual([], module["coverage"]["missing_german_topic_ids"])
+        self.assertEqual([], module["coverage"]["missing"])
+
     def test_catalog_projects_localized_manifest_topics_and_gaps(self) -> None:
         manifest = ModuleManifest(
             id="example",