feat: show linked emails in telegram logs

backend/bot/app/web/admin_api_impl/common.py

@@ -234,6 +234,7 @@ def _serialize_log(entry: MessageLog) -> Dict[str, Any]:
         "user_id": int(entry.user_id) if entry.user_id else None,
         "telegram_username": entry.telegram_username,
         "telegram_first_name": entry.telegram_first_name,
+        "email": getattr(getattr(entry, "author_user", None), "email", None),
         "event_type": entry.event_type,
         "content": entry.content,
         "is_admin_event": bool(entry.is_admin_event),

backend/bot/app/web/webapp/billing.py

@@ -311,7 +311,12 @@ async def activate_trial_route(request: web.Request) -> web.Response:
                 notification_service = NotificationService(
                     request.app["bot"], settings, i18n_instance
                 )
-                await notification_service.notify_trial_activation(user_id, end_date)
+                await notification_service.notify_trial_activation(
+                    user_id,
+                    end_date,
+                    username=db_user.username,
+                    email=getattr(db_user, "email", None),
+                )
             except Exception:
                 logger.exception("Failed to send WebApp trial activation notification")