feat: add governed postbox delivery and report hardening

tests/test_imap_append_idempotency.py

@@ -7,7 +7,9 @@ from types import SimpleNamespace
 from unittest.mock import MagicMock, patch
 
 import pytest
-from sqlalchemy import create_engine, text
+from alembic.migration import MigrationContext
+from alembic.operations import Operations
+from sqlalchemy import create_engine, inspect, text
 
 from govoplan_campaign.backend import router
 from govoplan_campaign.backend.db.models import (
@@ -128,6 +130,10 @@ def test_post_provider_persistence_failure_freezes_imap_retry() -> None:
         mail_profile_id="profile-1",
         smtp_transport_revision="smtp-revision",
         imap_transport_revision="imap-revision",
+        smtp_server_id=None,
+        smtp_credential_id=None,
+        imap_server_id=None,
+        imap_credential_id=None,
         delivery=SimpleNamespace(
             imap_append_sent=SimpleNamespace(enabled=True, folder="Sent"),
         ),
@@ -218,6 +224,31 @@ def test_imap_claim_migration_preserves_and_renumbers_duplicate_attempts() -> No
     ]
 
 
+def test_imap_attempt_claim_repair_adds_only_the_missing_column() -> None:
+    migration = importlib.import_module(
+        "govoplan_campaign.backend.migrations.versions.e9f0a1b2c3d4_v0114_repair_imap_attempt_claim"
+    )
+    engine = create_engine("sqlite+pysqlite:///:memory:")
+    with engine.begin() as connection:
+        connection.execute(
+            text(
+                "CREATE TABLE imap_append_attempts ("
+                "id VARCHAR(36) PRIMARY KEY, job_id VARCHAR(36) NOT NULL)"
+            )
+        )
+        context = MigrationContext.configure(connection)
+        with patch.object(migration, "op", Operations(context)):
+            migration.upgrade()
+            migration.upgrade()
+
+        columns = {
+            column["name"]
+            for column in inspect(connection).get_columns("imap_append_attempts")
+        }
+
+    assert columns == {"id", "job_id", "claim_token"}
+
+
 @pytest.mark.parametrize("decision", ["smtp_accepted", "not_sent", "imap_appended", "imap_not_appended"])
 def test_reconciliation_requires_an_evidence_note(decision: str) -> None:
     with pytest.raises(ValueError, match="evidence note"):