feat: establish v0.70 platform milestone

internal/memorylifecycle/delete_processor.go

@@ -42,6 +42,13 @@ func (p *DeleteProcessor) Handle(ctx context.Context, event outbox.Event) error
 		if status != "PENDING_DELETE" {
 			return nil
 		}
+		var unresolvedProviderRefs int
+		if err := tx.QueryRow(ctx, `SELECT count(*) FROM memory_index_entry WHERE memory_id=$1::uuid AND index_type='provider' AND provider_ref IS NOT NULL AND status<>'DELETED'`, event.AggregateID).Scan(&unresolvedProviderRefs); err != nil {
+			return fmt.Errorf("check provider memory deletion: %w", err)
+		}
+		if unresolvedProviderRefs > 0 {
+			return outbox.Retryable(errors.New("provider memory deletion has not reconciled"))
+		}
 		if _, err := tx.Exec(ctx, `UPDATE memory_index_entry SET embedding=NULL,status='DELETED',provider_ref=NULL,indexed_at=NULL,last_error=NULL,updated_at=now() WHERE memory_id=$1::uuid`, event.AggregateID); err != nil {
 			return fmt.Errorf("delete memory indexes: %w", err)
 		}