Feature: Audio Conversion
  As the system
  I want to convert audio to Razzmatazz-compatible WAV
  So the exported kit plays correctly on Nintendo Switch

  Scenario: Convert audio format
    Given an audio file in any supported format (WAV, MP3, FLAC, OGG, AIFF, M4A, AAC)
    When the /api/convert endpoint receives the file
    Then the output is PCM WAV (format tag 1)
    And sample rate is preserved
    And bit depth is at most 24-bit (s16le or s24le)
    And channel count is 1 or 2

  Scenario: Probe audio metadata
    Given an audio file
    When the /api/probe endpoint receives the file
    Then it returns sample rate, bit depth, channels, duration, extension, and file size