32395bac5d
Replace the 3-way segmented speed control with a dropdown menu offering 0.5× / 0.75× / 1× / 1.25× / 1.5×, with evened-out underlying AVSpeech rates anchored at 1× = 0.50. Align the default saved rate to 0.50 so 1× is selected on a fresh install (was 0.45, which matched no option). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>