feat(telegram): wire audioAsVoice through bot.ts

- Add audioAsVoice option to ReplyPayload type
- Update bot.ts to use sendVoice by default for audio (voice bubble)
- When audioAsVoice is false, use sendAudio (file with metadata)

This allows agents to control voice vs file mode via ReplyPayload.

src/auto-reply/types.ts

@@ -18,5 +18,7 @@ export type ReplyPayload = {
   mediaUrl?: string;
   mediaUrls?: string[];
   replyToId?: string;
+  /** Send audio as voice message (bubble) instead of audio file. Defaults to false. */
+  audioAsVoice?: boolean;
   isError?: boolean;
 };

src/telegram/bot.ts

@@ -1250,9 +1250,16 @@ async function deliverReplies(params: {
           ...mediaParams,
         });
       } else if (kind === "audio") {
-        await bot.api.sendAudio(chatId, file, {
-          ...mediaParams,
-        });
+        const useVoice = reply.audioAsVoice === true; // default false
+        if (useVoice) {
+          await bot.api.sendVoice(chatId, file, {
+            ...mediaParams,
+          });
+        } else {
+          await bot.api.sendAudio(chatId, file, {
+            ...mediaParams,
+          });
+        }
       } else {
         await bot.api.sendDocument(chatId, file, {
           ...mediaParams,