describe core/meta as the legacy permission repo; drop stale meta-flake prose

Comments, docs and the hive-c0re README no longer say the hive renders, locks or pushes a meta flake. core/meta is the legacy permission-seed repo that meta::remove_permission_files still commits to; builds come from internal/meta (meta_rev.rs). Docs note that a start of a stale stopped agent can fail until the swarm's update pins the config.

hive-c0re/src/stores/power.rs

@@ -11,7 +11,7 @@
 //! queued node: operator/intent actions update the row synchronously
 //! at request time, then submit the DAG whose terminal `Reconcile`
 //! reads the fresh value — rapid toggles are last-writer-wins and the
-//! reconciles converge. Power toggles never commit to the meta repo.
+//! reconciles converge.
 
 use std::path::Path;
 use std::sync::Mutex;