Add channels.telegram.linkPreview config to control whether link previews
are shown in outbound messages. When set to false, uses Telegram's
link_preview_options.is_disabled to suppress URL previews.
- Add linkPreview to TelegramAccountConfig type
- Add Zod schema validation for linkPreview
- Pass link_preview_options to sendMessage in send.ts and bot/delivery.ts
- Propagate linkPreview config through deliverReplies callers
- Add tests for link preview behavior
Fixes#1675
Co-Authored-By: Claude <noreply@anthropic.com>
When native slash commands are executed in Telegram topics/forums, the
originating topic context was not being preserved. This caused sub-agent
announcements to be delivered to the wrong topic.
Root cause: Native slash command context did not set OriginatingChannel
and OriginatingTo, causing session delivery context to fallback to the
user's personal ID instead of the group ID + topic.
Fix: Added OriginatingChannel and OriginatingTo to native slash command
context, ensuring topic information is preserved for sub-agent announcements.
Related session fields:
- lastThreadId: preserved via MessageThreadId
- lastTo: now correctly set to group ID via OriginatingTo
- deliveryContext: includes threadId for proper routing
zerone0x
Rohan Nagpal
Peter Steinberger
hsrvc
Shadow