Add two-stage charged-crystal demo and original art set.

project.godot

@@ -0,0 +1,26 @@
+; Engine configuration file.
+; Edit through the Godot editor when possible.
+
+config_version=5
+
+[application]
+
+config/name="Mana Foundry"
+config/description="A 2.5D magical factory-building demo."
+run/main_scene="res://scenes/main.tscn"
+
+[display]
+
+window/size/viewport_width=1280
+window/size/viewport_height=720
+window/size/window_width_override=1280
+window/size/window_height_override=720
+window/stretch/mode="canvas_items"
+
+[rendering]
+
+renderer/rendering_method="gl_compatibility"
+renderer/rendering_method.mobile="gl_compatibility"
+textures/default_filters/use_nearest_mipmap_filter=false
+environment/defaults/default_clear_color=Color(0.018, 0.035, 0.055, 1)
+