When Hermes auto-titles a session in a Telegram DM topic it currently
renames the topic itself to the generated title. That works for
operator-managed lanes (extra.dm_topics) but is disruptive for
ad-hoc Threaded-Mode topics that users name by hand — every first
exchange overwrites their chosen title.
Add gateway.platforms.telegram.extra.disable_topic_auto_rename (default
False, preserving prior behaviour). When set, both
_schedule_telegram_topic_title_rename and the underlying
_rename_telegram_topic_for_session_title short-circuit before touching
the Telegram API. Internal session titles (sessions list, TUI) keep
working unchanged.
Also bridge the legacy top-level telegram.disable_topic_auto_rename key
through to gateway.platforms.telegram.extra so users on the older
config layout don't have to migrate to enable it.
- Tests cover the runtime flag, the scheduling entry-point, and string
truthiness coercion for YAML-loaded values.
- Docs updated in messaging/telegram.md with an example block.
9d789f3a5b