Initial scaffolding.

scripts/base_effect.gd

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+class_name BaseEffect
+extends Resource
+
+@export var duration: float = 0.5
+
+# Called when the effect is applied
+func start(target: Node) -> void:
+    pass
+
+# Called every frame (if needed)
+func process(delta: float) -> void:
+    pass
+
+# Clean up any changes to the target
+func stop(target: Node) -> void:
+    pass