feat(nushell): add nu_libs autoload package

fix(notgraph): replace sort_by with sort_by_key (clippy)

crates/notgraph/src/analysis.rs

@@ -1,4 +1,5 @@
 use crate::types::{CrateGraph, FanStats, GraphStats, Hotspot, HotspotKind, ModStats, ModuleGraph};
+use std::cmp::Reverse;
 use std::collections::{HashMap, VecDeque};
 
 pub fn fan_stats(nodes: &[String], edges: &[(String, String)]) -> Vec<FanStats> {
@@ -66,7 +67,7 @@ pub fn hotspots(stats: &[FanStats], top_n: usize) -> Vec<Hotspot> {
     let mut result = Vec::new();
 
     let mut by_fan_in = stats.to_vec();
-    by_fan_in.sort_by(|a, b| b.fan_in.cmp(&a.fan_in));
+    by_fan_in.sort_by_key(|b| Reverse(b.fan_in));
     for s in by_fan_in.iter().take(top_n) {
         if s.fan_in > 0 {
             result.push(Hotspot {
@@ -78,7 +79,7 @@ pub fn hotspots(stats: &[FanStats], top_n: usize) -> Vec<Hotspot> {
     }
 
     let mut by_fan_out = stats.to_vec();
-    by_fan_out.sort_by(|a, b| b.fan_out.cmp(&a.fan_out));
+    by_fan_out.sort_by_key(|b| Reverse(b.fan_out));
     for s in by_fan_out.iter().take(top_n) {
         if s.fan_out > 0 {
             result.push(Hotspot {

nushell/.config/nushell/autoload/nu_libs.nu

@@ -0,0 +1,10 @@
+# nu_libs — load all lib/* modules on shell startup
+# Managed by notfiles (nushell package). Link with: notfiles link nushell
+# lib/ai is excluded from lib/mod.nu (requires runtime deps) — loaded separately below.
+# lib/extensions is excluded (requires external project repos) — load manually as needed.
+
+const NU_LIBS     = "/Users/joe/dev/nu_libs/lib/mod.nu"
+const NU_LIBS_AI  = "/Users/joe/dev/nu_libs/lib/ai/mod.nu"
+
+use $NU_LIBS *
+use $NU_LIBS_AI *