Refactor/asr tts (#1939)

* refactor: update ASR and TTS implementations

* fix lint

* Integrating asr/tts models w/ new security config

* update documents

* add arbitrary whisper transcriptor support

* update documents

* fix lint

* add mimo tts

pkg/channels/feishu/common.go

@@ -6,6 +6,8 @@ import (
 	"strings"
 
 	larkim "github.com/larksuite/oapi-sdk-go/v3/service/im/v1"
+
+	"github.com/sipeed/picoclaw/pkg/channels"
 )
 
 // mentionPlaceholderRegex matches @_user_N placeholders inserted by Feishu for mentions.
@@ -145,3 +147,8 @@ func extractImageKeysRecursive(v any, feishuKeys, externalURLs *[]string) {
 		}
 	}
 }
+
+// VoiceCapabilities returns the voice capabilities of the channel.
+func (c *FeishuChannel) VoiceCapabilities() channels.VoiceCapabilities {
+	return channels.VoiceCapabilities{ASR: true, TTS: true}
+}