fix(files): verify acquired source identity and index import lookups

Release v0.1.27. Coordinated integrity review: GovOPlaN/govoplan-core#298.

tests/test_manifest_documentation.py

@@ -4,6 +4,7 @@ import unittest
 
 
 STATIC_TOPIC_IDS = {
+    "files.source-identity-provenance",
     "files.archive-worker-limits",
     "files.configuration-package.managed-storage",
     "files.quick-access-and-product-area",
@@ -46,6 +47,15 @@ class FilesManifestDocumentationTests(unittest.TestCase):
     def topic(self, topic_id: str):
         return self.topics[topic_id]
 
+    def test_source_provenance_and_legacy_ambiguity_are_bilingual(self):
+        topic = self.topic("files.source-identity-provenance")
+        self.assertEqual({"admin", "user"}, set(topic.documentation_types))
+        for body in (topic.body, topic.translations["de"]["body"]):
+            for field in ("source_revision", "acquired_sha256", "provider_checksum_claims", "import_annotations"):
+                self.assertIn(field, body)
+        self.assertIn("non-unique", topic.body)
+        self.assertIn("nicht eindeutig", topic.translations["de"]["body"])
+
     def test_archive_resource_boundary_is_static_and_bilingual(self):
         topic = self.topic("files.archive-worker-limits")
         self.assertEqual("available", topic.layer)