diff --git a/crates/path-cli/src/cache.rs b/crates/path-cli/src/cache.rs
index 2b2432e4..5be698f3 100644
--- a/crates/path-cli/src/cache.rs
+++ b/crates/path-cli/src/cache.rs
@@ -132,7 +132,7 @@ pub(crate) fn list_cached() -> Result<Vec<CacheEntry>> {
             modified: meta.modified().unwrap_or(std::time::SystemTime::UNIX_EPOCH),
         });
     }
-    out.sort_by(|a, b| b.modified.cmp(&a.modified));
+    out.sort_by_key(|e| std::cmp::Reverse(e.modified));
     Ok(out)
 }
 
diff --git a/crates/path-cli/src/cmd_import.rs b/crates/path-cli/src/cmd_import.rs
index 7dce75be..5927e129 100644
--- a/crates/path-cli/src/cmd_import.rs
+++ b/crates/path-cli/src/cmd_import.rs
@@ -590,7 +590,7 @@ fn pick_claude_global(
             metas.extend(ms);
         }
     }
-    metas.sort_by(|a, b| b.last_activity.cmp(&a.last_activity));
+    metas.sort_by_key(|m| std::cmp::Reverse(m.last_activity));
     if metas.is_empty() {
         return Ok(None);
     }
@@ -782,7 +782,7 @@ fn pick_gemini_global(
             metas.extend(ms);
         }
     }
-    metas.sort_by(|a, b| b.last_activity.cmp(&a.last_activity));
+    metas.sort_by_key(|m| std::cmp::Reverse(m.last_activity));
     if metas.is_empty() {
         return Ok(None);
     }
diff --git a/crates/path-cli/src/cmd_list.rs b/crates/path-cli/src/cmd_list.rs
index 59e59cca..489d0319 100644
--- a/crates/path-cli/src/cmd_list.rs
+++ b/crates/path-cli/src/cmd_list.rs
@@ -375,7 +375,7 @@ fn list_claude_sessions(
                         .last_activity
                         .map(|t| t.format("%Y-%m-%d %H:%M").to_string())
                         .unwrap_or_else(|| "unknown".to_string());
-                    println!("  {} {:>4} msgs  {}", &m.session_id, m.message_count, date);
+                    println!("  {} {:>4} msgs  {}", m.session_id, m.message_count, date);
                 }
             }
         }
@@ -395,7 +395,7 @@ fn list_claude_sessions_all(manager: &toolpath_claude::ClaudeConvo, fmt: ListFor
             Err(_) => continue, // skip unreadable projects rather than aborting
         }
     }
-    all.sort_by(|a, b| b.last_activity.cmp(&a.last_activity));
+    all.sort_by_key(|s| std::cmp::Reverse(s.last_activity));
 
     match fmt {
         ListFormat::Json => {
@@ -547,7 +547,7 @@ fn list_gemini_sessions(
                     };
                     println!(
                         "  {} {:>4} msgs{}  {}",
-                        &m.session_uuid, m.message_count, sub, date
+                        m.session_uuid, m.message_count, sub, date
                     );
                 }
             }
@@ -568,7 +568,7 @@ fn list_gemini_sessions_all(manager: &toolpath_gemini::GeminiConvo, fmt: ListFor
             Err(_) => continue,
         }
     }
-    all.sort_by(|a, b| b.last_activity.cmp(&a.last_activity));
+    all.sort_by_key(|s| std::cmp::Reverse(s.last_activity));
 
     match fmt {
         ListFormat::Json => {
diff --git a/crates/path-cli/src/sync/engine.rs b/crates/path-cli/src/sync/engine.rs
index 29e2a76c..e7d649b4 100644
--- a/crates/path-cli/src/sync/engine.rs
+++ b/crates/path-cli/src/sync/engine.rs
@@ -149,7 +149,7 @@ fn is_unchanged(rec: Option<&SyncRecord>, artifact: &ArtifactRef) -> bool {
 /// spent its time on the sessions the user most likely wants.
 fn newest_first(artifacts: &[ArtifactRef]) -> Vec<&ArtifactRef> {
     let mut order: Vec<&ArtifactRef> = artifacts.iter().collect();
-    order.sort_by(|a, b| b.modified.cmp(&a.modified));
+    order.sort_by_key(|a| std::cmp::Reverse(a.modified));
     order
 }
 
diff --git a/crates/toolpath-pi/src/reader.rs b/crates/toolpath-pi/src/reader.rs
index 3f6b0595..50d82262 100644
--- a/crates/toolpath-pi/src/reader.rs
+++ b/crates/toolpath-pi/src/reader.rs
@@ -356,7 +356,11 @@ pub fn list_session_files(resolver: &PathResolver, project: &str) -> Result<Vec<
             .unwrap_or(std::time::UNIX_EPOCH);
         entries.push((path, mtime));
     }
-    entries.sort_by(|a, b| b.1.cmp(&a.1));
+    // Newest first. Reverse() rather than a flipped comparator: clippy 1.95+
+    // rejects the latter as `unnecessary_sort_by`, and the key form says
+    // "sort by mtime, descending" without the reader having to work out which
+    // side of the comparison was swapped.
+    entries.sort_by_key(|e| std::cmp::Reverse(e.1));
     Ok(entries.into_iter().map(|(p, _)| p).collect())
 }