// Phase 189: Minimal test for _atoi pattern
// Expected behavior: StringAppend-style loop with early break

static box Atoi {
  method main() {
    local result = 0
    local i = 0
    loop(i < 3) {
      if i >= 2 { break }
      result = result * 10 + i
      i = i + 1
    }
    print(result)  // Expected: 01 -> 1 (0*10+0=0, 0*10+1=1, then break)
  }
}