docs: tool-progress preview streaming, Control UI avatar auth, exec heredoc and external-content token sanitization

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Vincent Koc
2026-04-21 13:39:47 -07:00
parent 3cb1a56bfc
commit 9702f0bf21
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@@ -161,6 +161,16 @@ Mattermost:
- Streams thinking, tool activity, and partial reply text into a single draft preview post that finalizes in place when the final answer is safe to send.
- Falls back to sending a fresh final post if the preview post was deleted or is otherwise unavailable at finalize time.
### Tool-progress preview updates
Preview streaming can also include **tool-progress** updates — short status lines like "searching the web", "reading file", or "calling tool" — that appear in the same preview message while tools are running, ahead of the final reply. This keeps multi-step tool turns visually alive rather than silent between the first thinking preview and the final answer.
Supported surfaces:
- **Discord**, **Slack**, and **Telegram** stream tool-progress into the live preview edit.
- **Mattermost** already folds tool activity into its single draft preview post (see above).
- Tool-progress edits follow the active preview streaming mode; they are skipped when preview streaming is `off` or when block streaming has taken over the message.
## Related
- [Messages](/concepts/messages) — message lifecycle and delivery