style: apply rustfmt across all crates and demos

Consistent formatting pass: line wrapping, import sorting, trailing
whitespace removal, let-chain indentation, merged derive attributes,
and unsafe block reformatting.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

crates/specialized/rtx-neuro-stats/src/cluster.rs

@@ -337,9 +337,7 @@ pub fn spatio_temporal_cluster_test(
                 let t_perm = compute_t_stats_ind(perm_x, perm_y, n_nodes, n_times);
                 let perm_clusters = find_clusters(&t_perm, threshold, adjacency, tail);
 
-                perm_clusters
-                    .first()
-                    .map_or(0.0, |c| c.statistic.abs())
+                perm_clusters.first().map_or(0.0, |c| c.statistic.abs())
             })
             .collect()
     } else {
@@ -371,9 +369,7 @@ pub fn spatio_temporal_cluster_test(
                 let t_perm = compute_t_stats_1samp(&flipped, n_nodes, n_times);
                 let perm_clusters = find_clusters(&t_perm, threshold, adjacency, tail);
 
-                perm_clusters
-                    .first()
-                    .map_or(0.0, |c| c.statistic.abs())
+                perm_clusters.first().map_or(0.0, |c| c.statistic.abs())
             })
             .collect()
     };