style: auto-format example files with lux fmt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

examples/showcase/higher_order.lux

@@ -1,38 +1,19 @@
-// Higher-Order Functions and Closures
-//
-// Functions are first-class values in Lux.
-// Closures capture their environment.
-//
-// Expected output:
-// Square of 5: 25
-// Cube of 3: 27
-// Add 10 to 5: 15
-// Add 10 to 20: 30
-// Composed: 15625 (cube(square(5)) = cube(25) = 15625)
-
 fn apply(f: fn(Int): Int, x: Int): Int = f(x)
 
-fn compose(f: fn(Int): Int, g: fn(Int): Int): fn(Int): Int =
-    fn(x: Int): Int => f(g(x))
+fn compose(f: fn(Int): Int, g: fn(Int): Int): fn(Int): Int = fn(x: Int): Int => f(g(x))
 
 fn square(n: Int): Int = n * n
 
 fn cube(n: Int): Int = n * n * n
 
-fn makeAdder(n: Int): fn(Int): Int =
-    fn(x: Int): Int => x + n
+fn makeAdder(n: Int): fn(Int): Int = fn(x: Int): Int => x + n
 
 fn main(): Unit with {Console} = {
-    // Apply functions
     Console.print("Square of 5: " + toString(apply(square, 5)))
     Console.print("Cube of 3: " + toString(apply(cube, 3)))
-
-    // Closures
     let add10 = makeAdder(10)
     Console.print("Add 10 to 5: " + toString(add10(5)))
     Console.print("Add 10 to 20: " + toString(add10(20)))
-
-    // Function composition
     let squareThenCube = compose(cube, square)
     Console.print("Composed: " + toString(squareThenCube(5)))
 }