What's new in cmux

• Fix a crash seconds after launch on Intel Macs; cmux is now the only process-wide crash handler, and embedded GhosttyKit no longer links Ghostty's native Sentry initializer (#9436)
• Fix cmux ssh <host> failing immediately with a shell syntax error from the generated startup script (#9425) — thanks @KousukeUchiyama!
• Clear Dock notifications when you focus the pane that raised them (#9418)
• Keep a restored Claude agent on its own account instead of falling back to the ambient one (#9419) — thanks @seanyoungberg!
• Stop bash shell integration printing "cannot overwrite existing file" on every prompt under set -o noclobber (#9420) — thanks @8bit-void!
• Fail closed when close or respawn-pane is given an explicit --surface that no longer exists, instead of acting on a different live surface (#9422) — thanks @PhilipPinckaers!

Native Simulator Panes. Run iPhone and iPad Simulators as first-class cmux panes, rendered crisply at real size, with their own commands and automation.

Mosh for Remote Workspaces. Remote workspaces can use Mosh instead of plain SSH, so a laptop that sleeps or changes networks picks the session back up instead of dropping it.

Idle CPU and Memory Reclaimed. Leaked openThread loops that burned ~90% of cmux idle CPU are gone, and idle background agents hibernate under critical memory pressure.

• Native iPhone and iPad Simulator panes, with their own commands and automation (#7857)
• First-class Mosh transport for remote workspaces (#8442)
• Workspace-wide terminal font zoom on Cmd+Ctrl+= / Cmd+Ctrl+- / Cmd+Ctrl+0, and per-tab zoom now persists across restarts (#8791)
• Cmd+Shift+T reopens the last closed item (#9132)
• Cmd+[ and Cmd+] traverse global workspace focus history, and pane cycling becomes rebindable (#9329)
• Move active surfaces between panes with automatic directional splits (#8764)
• Dock panes persist across session restore, with full Dock surface runtime parity (#8690)
• iOS (beta): stream Mac browser panes to the phone, interactive and pixel-perfect, with dialogs mirrored (#8298)
• iOS (beta): chronological notification feed (#8210)