feat(transcription): add language parameter for Groq Whisper STT

nanobot/channels/base.py

@@ -25,6 +25,7 @@ class BaseChannel(ABC):
     transcription_provider: str = "groq"
     transcription_api_key: str = ""
     transcription_api_base: str = ""
+    transcription_language: str = ""
 
     def __init__(self, config: Any, bus: MessageBus):
         """
@@ -54,6 +55,7 @@ class BaseChannel(ABC):
                 provider = GroqTranscriptionProvider(
                     api_key=self.transcription_api_key,
                     api_base=self.transcription_api_base or None,
+                    language=self.transcription_language or None,
                 )
             return await provider.transcribe(file_path)
         except Exception as e:

nanobot/channels/manager.py

@@ -88,6 +88,7 @@ class ChannelManager:
                 channel.transcription_provider = transcription_provider
                 channel.transcription_api_key = transcription_key
                 channel.transcription_api_base = transcription_base
+                channel.transcription_language = getattr(self.config.channels, "transcription_language", "")
                 self.channels[name] = channel
                 logger.info("{} channel enabled", cls.display_name)
             except Exception as e: