feat: prepare ARR for controlled public deployment

arr_ingestion/__init__.py

@@ -0,0 +1,26 @@
+"""ARR-owned validation and PostgreSQL ingestion for deterministic Opera results."""
+
+from arr_ingestion.contracts import DeliveryEnvelope, IngestionError
+from arr_ingestion.direct_contracts import (
+    DIRECT_CONTRACT_VERSION,
+    MAX_DIRECT_PAYLOAD_BYTES,
+    DirectSubmissionReceipt,
+    DirectSubmissionRequest,
+    SubmissionGrant,
+)
+from arr_ingestion.direct_postgres import PostgresDirectIngestionRepository
+from arr_ingestion.direct_service import DirectSubmissionService
+from arr_ingestion.direct_validation import DirectResultValidator
+
+__all__ = [
+    "DIRECT_CONTRACT_VERSION",
+    "MAX_DIRECT_PAYLOAD_BYTES",
+    "DeliveryEnvelope",
+    "DirectResultValidator",
+    "DirectSubmissionReceipt",
+    "DirectSubmissionRequest",
+    "DirectSubmissionService",
+    "IngestionError",
+    "PostgresDirectIngestionRepository",
+    "SubmissionGrant",
+]