* refs/remotes/tmux-openbsd/master:
Use ACS arrows for tree mode.
Do not crash when synchronizing groups and there is no current window. GitHub issue 5467 from Ju-an Zhang.
Add pane_private_modes format with list of DEC private modes, from George Nachman.
Do not log when logging is off, from Michael Grant.
* refs/remotes/tmux-openbsd/master:
Do not attempt to drain write buffer on stuck clients, since it requires a weird dance to make libevent do it. Instead, just ignore the client and destroy the buffer normally if not drained in 10 seconds.
* refs/remotes/tmux-openbsd/master:
Do not let a stuck client prevent the server from exiting - give up after 10 seconds. GitHub issue 5444 from Ben Maurer.
* refs/remotes/tmux-openbsd/master:
Queue control mode notifications rather than emitting them inside %begin/%end, GitHub issue 5458 from George Nachman.
* refs/remotes/tmux-openbsd/master:
Store background colour in padding cells and correctly clear adjacent cells when tabs are overwritten, GitHu issue 5441 from Ayman Bagabas.
Exit failure on socket failure, from Rayan Salhab.
Pessimize compiler flags for screen-redraw.c to prevent tmux from dumping core upon startup on landisk.
Build an adaptive 256-colour palette with median cut instead of using a fixed colour cube. Apply Floyd-Steinberg error diffusion while mapping pixels to reduce banding and preserve image detail.
Retain the padded canonical pixel canvas separately from the image content. Scale only the populated portion of partial edge cells so an image keeps its exact raster size on the originating terminal while retaining its cell footprint.
A resize may temporarily leave the terminal cell pixel dimensions unknown while tmux queries the terminal. Schedule another client redraw when the pixel geometry response arrives so the graphical backend replaces the temporary text fallback.
Enable the sixel feature when WezTerm is detected and clarify that the kitty terminal feature requires Unicode placeholder support rather than only the basic graphics protocol.
