What fuzz output formats are available in EK9?

  ek9 -fuzz <minutes>    Human-readable output (default, same as -fuzz1).
  ek9 -fuzz0 <minutes>   Terse output: one-line CI pass/fail summary.
  ek9 -fuzz2 <minutes>   JSON output: fuzz-report.json + fuzz-snapshots.jsonl.
  ek9 -fuzz6 <minutes>   HTML dashboard: fuzz-report/index.html.

  fuzz-report.json: final summary with crash count, iterations, timing.
  fuzz-snapshots.jsonl: periodic snapshots for throughput graphing.

  Error code heatmap, phase distribution chart, throughput curve.

  ek9 -fuzz0 5

defines module qa.fuzzingandmutation.outputformats

  <?-
    Demonstrates code with multiple output paths that would
    produce different fuzz statistics depending on coverage.
    The output format flags control how those statistics
    are reported, not what the code does.
  -?>

  defines function

    categorise() as pure
      -> score as Integer
      <- category as String: "unknown"

      failThreshold <- 40
      passThreshold <- 70
      excellentThreshold <- 90

      if score < failThreshold
        category: "fail"
      else if score < passThreshold
        category: "pass"
      else if score < excellentThreshold
        category: "good"
      else
        category: "excellent"

    formatResult() as pure
      ->
        studentName as String
        score as Integer
      <- report as String: String()

      grade <- categorise(score)
      report: `${studentName}: ${score} (${grade})`

  defines program

    FuzzOutputFormatsDemo()
      stdout <- Stdout()

      scores <- [35, 55, 78, 95]
      names <- ["Alice", "Bob", "Carol", "Dave"]

      idx <- 0
      defaultName <- "Unknown"
      for score in scores
        studentName <- names.getOrDefault(idx, defaultName)
        if studentName?
          stdout.println(formatResult(studentName, score))
        idx: idx + 1