feat: add configurable tab bar status (#2586)

* feat: show a zoom indicator in the desktop tab bar

Reserve the right edge of the tab row for a ZOOM pill while the
focused pane is zoomed, matching the accent style of the mode bars.
The per-tab Z suffix stays; the pill makes the zoomed state visible
at a glance like tmux's status-right flag.

* feat: optionally show the hostname in the desktop tab bar

Add ui.tab_bar_hostname to display the machine's hostname at the right
edge of the tab row, like tmux's #h in status-right. The value resolves
where the server renders, so remote sessions show the remote host. Off
by default.

* fix: strip control characters from the tab bar hostname

* fix: hide the hostname when it would squeeze out the tab strip

* feat: add configurable tab bar status

* fix: harden tab bar status updates

* fix: terminate tab bar status process trees

* fix: disable status commands on unsupported platforms

* fix: skip unchanged status command renders

* fix: keep tab bar status opt-in by default

---------

Co-authored-by: David Heinemeier Hansson <david@hey.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/platform/linux.rs b/src/platform/linux.rs
index 7932ae09..89e6c96d 100644
--- a/src/platform/linux.rs
+++ b/src/platform/linux.rs
@@ -13,9 +13,10 @@ use super::{
 };
 
 pub(crate) use super::unix_common::{
-    create_remote_private_dir, create_remote_ssh_config_dir, create_remote_ssh_config_file,
-    remote_bridge_endpoint_path, remote_private_temp_base, remote_reattach_argument,
-    remote_reattach_program, remote_ssh_config_paths,
+    configure_status_command, create_remote_private_dir, create_remote_ssh_config_dir,
+    create_remote_ssh_config_file, hostname, local_datetime, remote_bridge_endpoint_path,
+    remote_private_temp_base, remote_reattach_argument, remote_reattach_program,
+    remote_ssh_config_paths, status_commands_supported, StatusCommandGuard,
 };
 
 const WSL_MARKER_ENV_VARS: &[&str] = &["WSL_DISTRO_NAME", "WSL_INTEROP"];