fix(telegram,conversations): attachments by day with sweep in both modes, merge renames the topic, gone topics unbind, failures visible

src/beaver_gateway/frontends/telegram/outbox.py

@@ -143,7 +143,7 @@ class Outbox:
             if "parse" in text and not row.plain:
                 await self._retry(row, str(exc), delay=0.0, plain=True)
             elif any(marker in text for marker in _GONE):
-                await self._fail(row, str(exc))
+                await self._fail(row, str(exc), gone=True)
             else:
                 await self._fail(row, str(exc))
         except (TelegramNotFound, TelegramForbiddenError) as exc:
@@ -180,7 +180,7 @@ class Outbox:
         if delay < 5.0:
             self._wake.set()
 
-    async def _fail(self, row: Delivery, error: str) -> None:
+    async def _fail(self, row: Delivery, error: str, *, gone: bool = False) -> None:
         _log.error(
             "delivery #%s to %s/%s given up: %s",
             row.id,
@@ -196,6 +196,7 @@ class Outbox:
             chat_id=row.chat_id,
             thread_id=row.thread_id,
             error=error,
+            gone=gone,
         )
 
     async def _mark(