fix(s3/lifecycle): parallelize shell shard sweeps

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

weed/shell/command_s3_lifecycle_run_shard.go

@@ -162,6 +162,11 @@ func (c *commandS3LifecycleRunShard) Do(args []string, env *CommandEnv, writer i
 				Client:      client,
 				Persister:   &dailyrun.FilerCursorPersister{Store: dispatcher.NewFilerStoreClient(filerClient)},
 				Lister:      dispatcher.NewFilerSiblingLister(filerClient, bucketsPath),
+				// The shell command is used for bounded one-shot sweeps in
+				// integration tests and CI. Fan out across the selected shards
+				// so recovery walks do not serialize 16 shard scans into a 10s
+				// timeout budget.
+				Workers: len(shards),
 				Walker:      walker,
 				EventBudget: *eventBudget,
 				ClientName:  fmt.Sprintf("shell-lifecycle-%s", formatShardLabel(shards)),