feat(shipote): quota enforce + cgroup memory.max + pipeline restart (fase L)

- WorkspaceSpec.quota_enforce: QuotaAction (None|Log|Kill) por recurso
  (mem, nproc). reap_dead aplica policy; Kill usa stop_with_grace(ZERO).
- ente_incarnate::cgroup::apply_rlimits_to_cgroup escribe memory.max y
  pids.max. WorkspaceManager::create_with_id lo invoca si soma.cgroup.path
  y delegation. Kernel hace OOM kill al exceder; falla silenciosa si no
  hay delegation.
- PipelineSpec.restart_on_failure: bool. register_pipeline_supervisor
  retiene spec; reap_dead detecta all-dead + any-failed → push a queue;
  daemon reaper drena y relanza pipeline ENTERO (los pipes intermedios
  no permiten restart parcial).

82 tests pasan (ente-incarnate 16, nouser-core 27, shipote-card 8,
shipote-core 24, shipote-discern 5, yahweh-provider-fs 3).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

crates/modules/shipote/shipote-protocol/src/lib.rs

@@ -374,6 +374,7 @@ mod tests {
                 ttl: None,
                 flow_dirs: vec![],
                 on_exit: shipote_card::ExitPolicy::Reap,
+                quota_enforce: Default::default(),
             },
         };
         let bytes = postcard::to_allocvec(&req).unwrap();