Preserve thread recency when reopening from memory

[guivieiras]

Opening a thread that is still in memory changes its last activity time and moves it up the thread list. This fix keeps that time unchanged when reopening it, just as when opening a thread from disk.

The fix removes one unnecessary save from the existing code. The updated test checks that the activity time stays unchanged both in memory and on disk. It also keeps the existing checks that reopening the thread doesn’t stop its provider.

Implemented with GPT-6 Astra in Tcode

[guivieiras]

Hey @Tryanks! Really nice project!

I was hunting for a library to start working on a PoC of an agent wrapper. I then found about GPUI, looked for projects that use it and ended up here. I was getting sick of having no other option than electron 😄

Tcode performs really well, the mobile app is lightweight and smooth. Great job!

I have some other changes and fixes that I did on my fork here, over the next few days I'll clean them and
submit some PR's if you want to have a look. Some might be too opinionated, but I'll send them just in case.

Fixes:

• Overlay theme inheritance - Dialogs and toasts now use correct text color and font
• Manual activity expansion/collapse - now collapsing an auto expanded activity works
• Subagent label - now subagent model name label shows correct name
• Window drag - stop propagation on header controls so clicks on them dont drag the window
• Android autocomplete - now accepting autocomplete suggestion properly replaces the word

Improvements:

• Added thread and thread-list scrollbars
• Added smooth scrolling
• Thread title generation and regeneration - TODO
• Harden image loading and improve image previewing and link

Tweaks:

• Centerer blank thread composer + project header - TODO
• Added drawer for chat settings below composer on mobile
• Thread state presentation (has some settle related things) - TODO
  • unread -> completed
  • timer for time spent working
  • pulse animation
  • unsent-draf indicator
  • settle instead of archive on the hover icon action

Features:

• Settled threads - similar to t3code
• Thread sorting by last user message setting - instead of just based on agent updates - TODO
• Keyboard shortcuts for navigating between threads - TODO
• T3 Code importer - brings over t3code thread titles and some additional metadatas - TODO

[Tryanks]

Hey @guivieiras , thanks — I really appreciate that! I've gone through those branches, and they all look very helpful.

In fact, some of the issues they address are things that have bothered me in day-to-day use as well. I guess I'd just gotten so used to them over time that I stopped noticing them enough to actually fix them.

If you're interested, please feel free to open PRs for any of these improvements. I'd be very happy to take a closer look and discuss them further there. Thanks again!