Add distribution audience contracts and module wiring

tests/test_distribution_list_contract.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+import unittest
+
+from govoplan_core.core.distribution_lists import (
+    CAPABILITY_DISTRIBUTION_LIST_EXPAND,
+    DistributionExpansionLimits,
+    DistributionExpansionRequest,
+    DistributionListEntryRef,
+    DistributionSourceReference,
+)
+
+
+class DistributionListContractTests(unittest.TestCase):
+    def test_mixed_entry_and_bounded_request_are_provider_neutral(self) -> None:
+        source = DistributionSourceReference(
+            provider="addresses",
+            resource_type="address_list",
+            resource_id="list-1",
+            revision="4",
+            fingerprint="sha256:abc",
+        )
+        entry = DistributionListEntryRef(
+            id="entry-1",
+            kind="address_list",
+            mode="include",
+            source=source,
+            requested_channels=("email",),
+        )
+        request = DistributionExpansionRequest(
+            list_id="distribution-1",
+            limits=DistributionExpansionLimits(max_results=25),
+        )
+
+        self.assertEqual("address_list", entry.kind)
+        self.assertEqual(25, request.limits.max_results)
+        self.assertEqual("dist_lists.expand", CAPABILITY_DISTRIBUTION_LIST_EXPAND)
+
+
+if __name__ == "__main__":
+    unittest.main()