Buildable map boundary 1-2 tiles smaller than Vanilla

[dalerank]

Summary

Buildable map boundary appears 1–2 tiles smaller than Vanilla (e.g. western gold deposits).

Reported

Buildable map boundary is maybe 1-2 tiles large in Akhenaten (west gold deposits can fit more mines with path in Vanilla).

Code notes

• Build planner uses rectangular map_grid_is_inside (grid.cpp / build_planner.cpp).
• Diamond boundary helper map_grid_inside_map_area(..., edge_size) exists but is not used for construction; routing uses edge_size = 1.
• Commented-out Pharaoh diamond logic remains inside map_grid_is_inside.

Expected

Buildable area matches Vanilla map edge (including diamond-shaped playable region where applicable).

Labels

bug, gameplay