[T2] No test for FindEdgePath on disconnected mesh

[csparker247]

Summary

FindEdgePath is documented to return an empty vector when no path exists (e.g. source and destination are in different connected components), but this case has no test coverage.

Required Test

In TestHalfEdgeMesh.cpp, add TEST(HalfEdgeMesh, FindPath_Disconnected):

• Build a mesh with two disconnected components (vertices 0-2 in CC1, vertices 3-5 in CC2)
• Call FindEdgePath(mesh, 0, 3)
• Assert the returned path is empty

Conductor Track

T2