feat: sync latest ARR implementation

monthly_reports/service.py

@@ -164,6 +164,26 @@ class MonthlyReportService:
         reservation: Optional[ReservedReport] = None
         try:
             reservation = self._repository.reserve_report(report)
+            if reservation.already_published:
+                artifact = reservation.published_artifact
+                if artifact is None:
+                    raise RepositoryError(
+                        ErrorCode.PUBLISH_FAILED,
+                        "published monthly artifact identity is missing",
+                    )
+                return RunResult(
+                    request=request,
+                    status="success",
+                    row_count=report.row_count,
+                    channel_manifest=report.channel_manifest,
+                    report_version_id=reservation.report_version_id,
+                    version_no=reservation.version_no,
+                    artifact={
+                        "filename": artifact.original_filename,
+                        "storage_key": artifact.storage_key,
+                        "sha256": artifact.sha256,
+                    },
+                )
             with private_staging_directory(self._staging_root) as temp_dir:
                 work_dir = Path(temp_dir)
                 built = self._builder.build(report, work_dir)