v0.4.0

Added

• Added triangular grids with triangular and rectangular outer layouts,
  optional masks, TriangleCell, TriangleGrid, and createTriangleGrid().
• Added triangle-aware generation and solving across topology-neutral grid
  traversal, editing, and public package exports.
• Added grid type, triangle layout, and triangle side-size metadata to compact
  grid serialization while retaining compatibility with older square data.

Changed

• Added supportedGridTypes to generation algorithm capabilities. Triangle
  grids support Aldous-Broder, Binary Tree, DFS, Eller's, Growing Tree,
  Hunt-and-Kill, Kruskal, Prim, Random Traversal, Recursive Division,
  Sidewinder, and Wilson generation.

Fixed

• Matched Studio SVG exports to the 2D view, including the selected wall
  thickness, Triangle junction and terminal geometry, grid lines, cell colors,
  and active generation or solving overlays.
• Defined the initial .maze 1.0 schemas for topology, links, state, style,
  metadata, and cell colors. Links and paths now use canonical topology cell
  slots instead of runtime edge-array order or Square-only directions.