Merge feat/whatsapp-call-meta-bridge: out-of-scope cleanups

enterprise/app/models/channel/voice.rb

@@ -1,8 +0,0 @@
-# Stub for legacy inboxes whose channel_type is still 'Channel::Voice' after
-# the upstream DropChannelVoice migration moved voice fields onto
-# Channel::TwilioSms. Pointing at the new table lets Rails resolve
-# `belongs_to :channel, polymorphic: true` lookups to nil (no matching row),
-# so jbuilder `.try` chains short-circuit instead of raising.
-class Channel::Voice < ApplicationRecord
-  self.table_name = 'channel_twilio_sms'
-end

enterprise/app/services/messages/audio_transcription_service.rb

@@ -67,9 +67,7 @@ class Messages::AudioTranscriptionService< Llm::LegacyBaseOpenAiService
         parameters: {
           model: WHISPER_MODEL,
           file: file,
-          # 0.0 minimises Whisper's hallucinations on silence / sub-vocal segments —
-          # higher temperatures produce phantom phrases that look like real transcripts.
-          temperature: 0.0
+          temperature: 0.4
         }
       )
       transcribed_text = response['text']