- ChatContainer swaps the timeline on a deferred copy of the selection so the
active row, URL, and tab commit first. (This part had been overwritten by a
concurrent edit before the previous commit and is restored here.)
- A session whose messages are not in memory keeps the previous conversation
on screen for up to 400ms while they load, instead of flashing a skeleton
between two conversations.
- The reveal fade runs only for a session the user waited for and is 100ms;
a session that was ready at the click appears in the same frame.
- The sidebar prefetches the two rows on either side of the open session
150ms after it settles, two at a time, so neighbouring switches are warm.
Bohdan Triapitsyn
c2136ce838