style: auto-format example files with lux fmt

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

examples/test_rc_comparison.lux

@@ -1,17 +1,13 @@
 fn main(): Unit = {
     Console.print("=== Allocation Comparison ===")
-    
-    // FBIP path (rc=1): list is reused
     Console.print("Test 1: FBIP path")
     let a1 = List.range(1, 50)
     let b1 = List.map(a1, fn(x: Int): Int => x * 2)
     let c1 = List.reverse(b1)
     Console.print("FBIP done")
-    
-    // To show non-FBIP, we need concat which doesn't have FBIP
     Console.print("Test 2: Non-FBIP path (concat)")
     let x = List.range(1, 25)
     let y = List.range(26, 50)
-    let z = List.concat(x, y)  // concat always allocates new
+    let z = List.concat(x, y)
     Console.print("Concat done")
 }