Section 3.1 - Asymptotic Notation (legacy compatibility path)
Third-edition-numbered compatibility path for the asymptotic-notation section.
The canonical fourth-edition source is
CLRSLean.FourthEdition.Chapter_03.Section_03_1_Asymptotic_Notation;
this module forwards to it so legacy imports keep working during the
compatibility period (see docs/migrations/clrs4.md).