Add doc to script file

src/components/ui/form-numeric-input.tsx

@@ -1,3 +1,13 @@
+/**
+ * Custom Form Component: Numeric Input with Controls
+ *
+ * A numeric input field with increment/decrement buttons, validation,
+ * and error display. Built on top of shadcn/ui components.
+ *
+ * @author Andreas Weyer
+ * @license MIT
+ */
+
 import * as React from "react"
 import { Minus, Plus, X } from "lucide-react"
 import { Button } from "./button"