chore: Bump version to 0.12.13 and update documentation for color space handling

tools/validate_moge_surface.py

@@ -14,6 +14,7 @@ sys.path.insert(
 )
 
 from snapform.blender.depth_plane import MOGE_SURFACE_MATERIAL_NODE_GROUP_NAME
+from snapform.blender.depth_plane import material_color_space_name
 from snapform.blender.surface import (
     MOGE_NODE_GROUP_NAME,
     build_image_mesh,
@@ -198,7 +199,9 @@ def main():
         if node.bl_idname == "ShaderNodeTexImage" and node.image == foreground
     )
     assert color_texture.image.name == "MoGe Surface Test.color"
-    assert color_texture.image.colorspace_settings.name == "AgX Base sRGB"
+    assert color_texture.image.colorspace_settings.name == material_color_space_name(
+        bpy.context.scene
+    )
     normal_texture = next(
         node for node in surface.data.materials[0].node_tree.nodes
         if node.bl_idname == "ShaderNodeTexImage"