feat: sync latest ARR implementation

tests/test_daily_upload_filename_migration.py

@@ -0,0 +1,42 @@
+from pathlib import Path
+import unittest
+
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+UP_PATH = PROJECT_ROOT / "database" / "013_daily_upload_filename.sql"
+DOWN_PATH = PROJECT_ROOT / "database" / "013_daily_upload_filename.down.sql"
+
+
+class DailyUploadFilenameMigrationTests(unittest.TestCase):
+    def test_forward_migration_adds_nullable_validated_provenance(self) -> None:
+        sql = UP_PATH.read_text(encoding="utf-8")
+
+        for required in (
+            "current_database() <> 'booking_test'",
+            "ARR migrations 008 through 012 must be applied first",
+            "ADD COLUMN uploaded_filename text",
+            "processing_runs_uploaded_filename_check",
+            "uploaded_filename IS NULL",
+            "right(lower(uploaded_filename), 4) = '.xml'",
+            "Internal source artifacts remain source.xml",
+        ):
+            with self.subTest(required=required):
+                self.assertIn(required, sql)
+
+        self.assertNotIn("UPDATE ingestion.processing_runs", sql)
+        self.assertNotIn("source.original_filename", sql)
+
+    def test_rollback_refuses_to_discard_recorded_provenance(self) -> None:
+        sql = DOWN_PATH.read_text(encoding="utf-8")
+
+        self.assertIn("current_database() <> 'booking_test'", sql)
+        self.assertIn("WHERE uploaded_filename IS NOT NULL", sql)
+        self.assertIn(
+            "refusing rollback: uploaded filename provenance exists",
+            sql,
+        )
+        self.assertIn("DROP COLUMN uploaded_filename", sql)
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=2)