Name session checkpoints by their session title

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/app/generation.rs

@@ -552,8 +552,7 @@ impl App {
         false
     }
 
-    #[cfg(target_os = "macos")]
-    fn session_title(&self, session_id: i32) -> Option<String> {
+    pub(super) fn session_title(&self, session_id: i32) -> Option<String> {
         self.projects
             .iter()
             .flat_map(|project| &project.sessions)

src/app/view/stats.rs

@@ -417,9 +417,16 @@ impl App {
         let mut rows = column![].spacing(7);
         for entry in &usage.entries {
             let path = entry.path.clone();
+            let label = entry
+                .session
+                .and_then(|id| self.session_title(id))
+                .map_or_else(
+                    || entry.name.clone(),
+                    |title| format!("{}: {}", entry.name, shorten(&title)),
+                );
             rows = rows.push(
                 row![
-                    text(entry.name.clone()).size(12),
+                    text(label).size(12),
                     Space::with_width(Length::Fill),
                     text(format!(
                         "{} · {} old",
@@ -499,6 +506,15 @@ const AGE_COLORS: [Color; 5] = [
     Color::from_rgb(0.45, 0.45, 0.48),
 ];
 
+/// Keeps a long session title from crowding out the size and the action.
+fn shorten(title: &str) -> String {
+    const LIMIT: usize = 44;
+    if title.chars().count() <= LIMIT {
+        return title.to_owned();
+    }
+    title.chars().take(LIMIT - 1).chain(['…']).collect()
+}
+
 fn portion(bytes: u64, capacity: u64) -> u16 {
     ((bytes.saturating_mul(1000) / capacity.max(1)) as u16).max(1)
 }