🔤 adds debugging

docs/components/examples/debugging/mutations.js

@@ -0,0 +1,15 @@
+import { S } from "deka-dom-el/signals";
+// Wrong - direct mutation doesn't trigger updates
+const todos1 = S([{ text: "Learn signals", completed: false }]);
+todos1.get().push({ text: "Debug signals", completed: false }); // Won't trigger updates!
+
+// Correct - using .set() with a new array
+todos1.set([...todos1.get(), { text: "Debug signals", completed: false }]);
+
+// Better - using actions
+const todos2 = S([], {
+	add(text) {
+		this.value.push({ text, completed: false });
+	}
+});
+S.action(todos2, "add", "Debug signals");