fix(permissions): collapse known-set assignment to one line (rustfmt)

hive-c0re/src/dashboard/permissions.rs

@@ -341,8 +341,7 @@ pub(super) async fn get_stale_permissions(
             .into_iter()
             .collect();
     // Known = live roster ∪ tombstones.
-    let known: std::collections::HashSet<&String> =
-        live.iter().chain(tombstones.iter()).collect();
+    let known: std::collections::HashSet<&String> = live.iter().chain(tombstones.iter()).collect();
     // Explicit entries in either JSON file.
     let caps = crate::capabilities::read();
     let tgs = crate::tool_groups::read();