PR #22410 added three-mode Telegram topic routing to the live message path
(TelegramAdapter.send via the gateway DeliveryRouter), but the cron delivery
path never got it. cron/scheduler.py::_deliver_result sent through the live
adapter with a bare ``{"thread_id": ...}`` and fell back to the standalone
_send_telegram, neither of which addresses Bot API Direct Messages topics
correctly. After Bot API 10.0 (2026-05-08), sending to a private chat with a
bare ``message_thread_id`` is rejected/mis-routed, so cron deliveries to a
private DM topic landed in the General topic instead of the requested lane.
Fix: the cron live-adapter branch now routes the text send through the
gateway's ``DeliveryRouter._deliver_to_platform`` — the same canonical path
live messages use — so it inherits all three Telegram routing modes:
1. Forum/supergroup (negative chat_id) -> message_thread_id
2. Bot API DM topics (private chat_id + numeric topic id) ->
direct_messages_topic_id (the case #22773 reported)
3. Hermes-created named private DM-topic lanes -> ensure_dm_topic +
reply anchor
For mode 2, a private-chat target with a numeric topic id is passed as
``direct_messages_topic_id`` metadata (verified end-to-end:
TelegramAdapter._thread_kwargs_for_send turns it into
``{message_thread_id: None, direct_messages_topic_id: <int>}``), instead of a
bare message_thread_id. Forum/supergroup and home-channel deliveries are
unchanged. The standalone fallback (gateway down) is preserved.
No new config knob and no duplicated routing logic — this reuses the existing
DeliveryRouter rather than reimplementing topic routing in the cron path.
Salvaged from #42051 (stepanov1975) and #23249 (devsart95), which both
diagnosed the missing three-mode routing in the cron/standalone path;
reimplemented onto the canonical DeliveryRouter that landed since those PRs
were opened.
Co-authored-by: Alex <9785479+stepanov1975@users.noreply.github.com>
Co-authored-by: devsart95 <devsart95@gmail.com>
4cc28aa3bb