优化: 资源消耗优化，发布 v0.2.1

internal/key.go

@@ -222,11 +222,19 @@ func (m *Model) moveHistorySess(dir int) {
 
 func (m *Model) currentSessions() []*Session {
 	if m.history.DirCursor == 0 {
-		var all []*Session
-		for _, pd := range m.history.Projects {
-			all = append(all, pd.Sessions...)
+		if m.allSessionsDirty || m.allSessionsCache == nil {
+			total := 0
+			for _, pd := range m.history.Projects {
+				total += len(pd.Sessions)
+			}
+			all := make([]*Session, 0, total)
+			for _, pd := range m.history.Projects {
+				all = append(all, pd.Sessions...)
+			}
+			m.allSessionsCache = all
+			m.allSessionsDirty = false
 		}
-		return all
+		return m.allSessionsCache
 	}
 	if m.history.DirCursor == 1 {
 		return collectFavorites(m.history.Projects, m.history.Favorites)