/export only exports the loaded portion of a long thread

Description

In a long thread, /export writes only the part of the conversation that's currently
loaded. The file starts partway in and everything before that is missing. There is no
warning: the export succeeds and the file looks complete.

Scrolling to the top first, so the whole thread loads, gives a correct export. I'd
expect /export to write the full thread regardless of scroll position.

Plugins

No response

OpenCode version

v2.0.10

Steps to reproduce

1. Open a thread with well over 100 messages, so older messages aren't loaded.
2. Run /export without scrolling, taking the default options.
3. Check the first message in the file. It begins partway into the session.
4. Scroll to the top of the same session, then run /export again.
5. This file has the full thread. Scroll position is the only difference.

Screenshot and/or share link

No response

Operating System

macOS 27

Terminal

Ghostty

Start by locating the /export command and tracing how it selects messages when a long thread has only its currently visible portion loaded. Reproduce with a thread well over 100 messages without scrolling, then compare the export with one made after scrolling to the top. Done means both exports contain the full conversation regardless of scroll position.