fix(#1375): clean up pedantic warnings and re-enable -D warnings without pedantic bypass

hive-c0re/src/meta.rs

@@ -334,7 +334,7 @@ pub async fn lock_update_hyperhive() -> Result<()> {
 /// Write the tool-groups file for `agent` and commit it atomically
 /// under `META_LOCK`. Ensures the JSON change is staged + committed
 /// before the next `prepare_deploy` or `sync_agents` runs, so the
-/// working tree is never left dirty by an untimely PermChange write.
+/// working tree is never left dirty by an untimely `PermChange` write.
 pub async fn commit_tool_groups(agent: &str, groups: &[String]) -> Result<()> {
     let _guard = META_LOCK.lock().await;
     crate::tool_groups::set_groups(agent, groups)?;
@@ -467,11 +467,7 @@ pub async fn bulk_commit_topology(
         .iter()
         .filter_map(|(child, new_parent)| {
             let old = topo_before.get(*child).cloned().flatten();
-            if old.as_deref() != *new_parent {
-                Some((child.to_string(), old))
-            } else {
-                None
-            }
+            (old.as_deref() != *new_parent).then_some((child.to_string(), old))
         })
         .collect();
     Ok(changed)