Replaced continuous=true with phrase-by-phrase mode in all 3 voice inputs
(setupVoiceMicForField, setupVoiceInput, setupVoiceMic). Chrome mobile
resets ev.results mid-session with continuous=true causing repeated words.
Now each phrase is an independent SR() session; baseText grows cleanly.
Shared _buildVoiceEngine factory in clients.js.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>