Section 24.5 - Proofs of shortest paths (legacy compatibility path)
Third-edition-numbered compatibility path for the shortest-path property proofs. The canonical
fourth-edition source is
CLRSLean.FourthEdition.Chapter_22.Section_22_5_Shortest_Path_Properties;
this module forwards to it so legacy imports keep working during the
compatibility period (see docs/migrations/clrs4.md).