v1.2.0

Added

• transcribe_audio accepts an optional language argument (ISO 639-1 code,
  or "auto"), passed through as --language to mw.
• MACWHISPER_LANGUAGE_DEFAULTS env var maps directories to a default
  language (e.g. ~/Desktop/DK=da) — files in a matching directory (or its
  subdirectories) get --language automatically, most-specific match wins.
  An explicit language argument always overrides the directory default.
  Applies to both transcribe_audio and watch-folder transcriptions.
• New engine argument on transcribe_audio ("macwhisper" default, or
  "whisper-cpp") — an independent transcription backend using a standalone
  whisper-cli binary that does not go through MacWhisper at all. New
  MACWHISPER_WHISPERCPP_BINARY / MACWHISPER_WHISPERCPP_MODEL_DIR env vars.
  v1 supports .wav/.mp3/.flac input only; see README for setup and
  limitations. list_models() now also lists whisper-cpp models when
  MACWHISPER_WHISPERCPP_MODEL_DIR is configured.

Changed

• transcribe.py now validates the request and dispatches to a new
  engines.py module (MacWhisper and whisper-cpp backends); behavior of the
  MacWhisper path is unchanged. Test mock target for subprocess.Popen moved
  from macwhisper_mcp.transcribe to macwhisper_mcp.engines accordingly.
• The 10 MB output cap is now a single shared MAX_OUTPUT_BYTES constant in
  config.py, imported by transcribe.py and watcher.py so the two paths
  can never enforce different limits.

Fixed

• cancel_transcription no longer raises IndexError (surfaced to the client
  as an error) when the running transcription finishes and clears the proc
  list in the gap between cancel's non-empty check and its subscript. Cancel
  now uses a single atomic subscript and degrades to "no transcription
  running" instead.
• __version__ is now read from the installed distribution metadata instead of
  a hardcoded literal, so it can no longer drift from pyproject.toml on
  semantic-release bumps.
• start_watch now rejects a watch session when the "done" directory falls
  outside the configured allow-list (previously it silently wrote there). The
  done directory is overridable via the new MACWHISPER_WATCH_DONE_DIR env
  var; the default remains <incoming>/../done.