Imports

Section 25.3 - Johnson's algorithm for sparse graphs (legacy compatibility path)

Third-edition-numbered compatibility path for Johnson's algorithm. The canonical fourth-edition source is CLRSLean.FourthEdition.Chapter_23.Section_23_3_Johnsons_Algorithm; this module forwards to it so legacy imports keep working during the compatibility period (see docs/migrations/clrs4.md).

Declarations retain the CLRS.Chapter24.WeightedGraph namespace.