Max Lampert a88994e773 perf(desktop): prefetch the channel window on sidebar hover intent ...

A deliberate hover on a sidebar channel row (100ms dwell, so pointer
scrubbing never fires) warms that channel's message window, making the
subsequent click a cache hit instead of paying the relay fetch on the
switch path.

The window query options move into a shared factory so the prefetched
entry is byte-identical to what the mounted query reads; the prefetch
respects the window's staleTime, so hovering a fresh channel never
refetches. The mock bridge gains a head-fetch probe (cursorless window
reads) so the regression spec can assert dwell-fetches-once /
scrub-fetches-never.

Signed-off-by: Max Lampert <maxwell@squareup.com>

2026-08-26 22:16:06 -07:00

..

e2e

perf(desktop): prefetch the channel window on sidebar hover intent

2026-08-26 22:16:06 -07:00

fixtures

fix(desktop): more compact "compact" link previews (#5629)

2026-08-13 10:51:49 -07:00

helpers

test(desktop): high-membership channel-switch perf harness

2026-08-26 12:33:25 -07:00