Echo 2.5.0

• Meetings on the Mac now run on Apple's speech model too, every line labelled You or Them.
• The app is 143 MB smaller: Whisper base no longer ships. Small is more accurate (1.9% of words wrong against base's 2.2%) and still ships with tiny.
• Before iOS 26, iPhones with 4 to 6 GB of memory now get tiny in Auto (6.0%) instead of base. Base is still a download under Model in Settings.
• The benchmark now scores the speech, not the reading's spoken credit.