feat: mcp and backfill fixes

backend/src/userbot/modules/stt/service.py

@@ -4,6 +4,7 @@ from pyrogram.types import Message
 from userbot.modules.capture.context import CaptureContext
 from userbot.modules.media import self_destruct_ttl
 from userbot.modules.stt import repository
+from utils.logging import logger
 
 
 def is_transcribable(message: Message) -> bool:
@@ -12,6 +13,19 @@ def is_transcribable(message: Message) -> bool:
     return message.voice is not None or message.video_note is not None
 
 
+def should_transcribe_on_backfill(message: Message, self_id: int | None) -> bool:
+    if not is_transcribable(message):
+        return False
+    if message.outgoing:
+        return True
+    sender = message.from_user.id if message.from_user else None
+    if sender is None and message.sender_chat is not None:
+        sender = message.sender_chat.id
+    if sender == self_id:
+        return True
+    return not message.unread_media
+
+
 async def transcribe_message(
     client: Client, ctx: CaptureContext, chat_id: int, message_id: int
 ) -> None:
@@ -21,7 +35,18 @@ async def transcribe_message(
     result = await client.invoke(
         raw.functions.messages.TranscribeAudio(peer=peer, msg_id=message_id)
     )
-    if not result.pending and result.text:
+    if result.pending:
+        logger.info(
+            f"[yellow]STT pending {chat_id}/{message_id} "
+            f"(trial_remains={result.trial_remains_num})[/]"
+        )
+        return
+    if result.text:
         await repository.set_extracted_text(
             ctx.pool, ctx.account_id, chat_id, message_id, result.text
         )
+    else:
+        logger.info(
+            f"[yellow]STT empty {chat_id}/{message_id} "
+            f"(trial_remains={result.trial_remains_num})[/]"
+        )