Imports
Section 24.2 - Single-source shortest paths in DAGs (legacy compatibility path)
Third-edition-numbered compatibility path for SSSP in directed acyclic graphs. The canonical
fourth-edition source is
CLRSLean.FourthEdition.Chapter_22.Section_22_2_SSSP_In_DAGs;
this module forwards to it so legacy imports keep working during the
compatibility period (see docs/migrations/clrs4.md).