* Add Whisper transcription for BossmanJack Discord voice messages
Detect Discord voice message attachments (audio with IS_VOICE_MESSAGE flag)
from the monitored user and transcribe them via OpenAI Whisper API before
relaying to chat. Reuses the existing OpenAi.ApiKey setting. Feature is
disabled by default via Whisper.Enabled setting.
* Use separate API key setting for Whisper transcription
* Switch to local Whisper and post-then-edit transcription flow
Voice messages are now relayed immediately with a "transcribing..." placeholder,
then transcribed locally via the whisper CLI and the message is edited to append
the result. Removes OpenAI API dependency in favor of a local whisper binary.
Settings: Whisper.BinaryPath, Whisper.Model, Whisper.Enabled
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Co-authored-by: DFE <dfe@dfe.com>
Co-authored-by: barelyprofessional <150058423+barelyprofessional@users.noreply.github.com>
