Kaho 2.4.0

Runs on macOS 14 (Sonoma) again. 2.2.0 bundled a Python and speech library built for macOS 15, so on macOS 14 it quit at launch without showing anything. 2.4.0 is built against macOS 14, and the release script now refuses to ship any file that needs a newer macOS than Kaho claims. Tested on a macOS 14.3 MacBook Air.

Download Kaho-2.4.0.zip, unzip it, and drag Kaho into Applications. This release ships as a zip, not a DMG: the app is notarized by Apple and stapled, but Apple's notary service is still holding the DMG wrapper. A DMG will be added here once it clears. With Homebrew: brew install --cask utsavanand/kaho/kaho.

A reliability release. An independent audit of the whole application
found eighteen reproducible defects; this fixes all of them. The worst
could cost a dictation the user had already finished speaking.

• A stuck microphone no longer loses your words. macOS's audio stack
  can block forever while releasing a device, and Kaho waited for that
  release before handing the recording to the model — so a hang
  discarded speech that had already been captured. The transcript is
  now submitted first and the device released afterwards. (Swapping
  stop for abort would not have helped: both route through the same
  blocking call.)
• A dictation that takes too long says so instead of vanishing. The
  watchdog used to hide the pill, which erased the only sign that
  anything was still running — and because cancellability was read off
  whether the pill was visible, it also silently stopped Escape from
  working on that job.
• Cancelling one dictation can no longer discard another. Cancellation
  and spoken-instruction ranges were shared between recordings, so
  stopping one dictation and cancelling the next threw away the first,
  and starting a new one erased the previous one's instruction
  boundaries.
• A failed rewrite never costs you the transcript. Three paths could
  throw away recognised speech: a tokenizer without a chat template, a
  malformed custom endpoint, and a provider returning a null response.
  All three now fall back to pasting what you said.
• The reported time is the time you actually waited. It used to start
  after the worker picked the job up, so microphone shutdown and queue
  waiting were invisible — a four-second stall logged as 0.00s.
• Audio that is too quiet, silent, or missing now says so on the pill
  rather than only in a log file. A microphone turned down read as the
  app being broken.
• A slow device release is no longer reported as a wedged one. The old
  five-second threshold fired on healthy recordings and sent people to
  Restart Kaho for something that recovered on its own.
• An instruction too short to use is no longer transcribed into your
  message.
• A dictation already finished can no longer be stopped by a leftover
  timer from an abandoned one, and starting a new one can no longer
  hide the pill of a recording still in progress.
• A microphone that fails to open is no longer left claimed. The stream
  was not closed when it failed to start, so one bad open made every
  later open fail too — and any error other than a PortAudio one left
  the app unable to record at all until it was restarted.
• Changing the hotkey while holding it no longer strands the recording.
  Releasing the old key stopped matching, so the microphone stayed open
  with nothing to end it.
• A damaged settings file or history entry no longer stops the app
  starting. Both checks accepted valid JSON of the wrong shape and then
  crashed on it later.
• Warmups no longer pile up behind each other when several dictations
  follow in quick succession.

2.3.0 was built but never published: Apple's notary service stalled on
it for hours, and by the time that was clear the build was eight fixes
behind. Its contents are included here.