Close Campaign interface audit gaps

src/govoplan_campaign/backend/routes/attachments.py

@@ -23,6 +23,9 @@ from govoplan_campaign.backend.path_security import (
     assert_server_safe_campaign_paths,
 )
 from govoplan_campaign.backend.campaign.loader import load_campaign_json
+from govoplan_campaign.backend.campaign.mail_profile_boundary import (
+    CampaignMailProfileBoundaryError,
+)
 from govoplan_campaign.backend.attachments.resolver import resolve_campaign_attachments
 from govoplan_campaign.backend.persistence.versions import (
     is_version_final_locked,
@@ -324,7 +327,7 @@ def preview_campaign_attachments(
             include_unmatched=payload.include_unmatched,
             include_unlinked_candidates=payload.include_unlinked_candidates,
         )
-    except CampaignPathSecurityError as exc:
+    except (CampaignPathSecurityError, CampaignMailProfileBoundaryError) as exc:
         raise HTTPException(
             status_code=status.HTTP_422_UNPROCESSABLE_CONTENT, detail=str(exc)
         ) from exc