Kill stops a command pane's whole line again, now it runs with job control

With the line run under job control (the change before), the job running
has a group of its own, and Kill's SIGTERM to the tty's foreground group
stopped only that job: of `sleep 30; touch x` the touch still ran. For a
command pane the hosts now signal the shell's group as well, so the whole
line stops, as it did; a line typed at a prompt still loses only its
foreground job. The test forks a real pty for both halves: a background job
outliving its command and the pty's hangup, and a killed line not running on.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/detached/server.zig b/src/detached/server.zig
index 2fc165eb..857591d4 100644
--- a/src/detached/server.zig
+++ b/src/detached/server.zig
@@ -533,7 +533,7 @@ pub const Session = struct {
         const pt = s.ptys[pane];
         // A command whose exit is recorded is reaped: its group may be another's.
         if (pt.fd < 0 or pt.cmd.exited) return;
-        host_io.signalTty(pt.pid, pt.fd, sig);
+        host_io.signalTty(pt.pid, pt.fd, sig, pt.cmd.watched);
     }
 
     fn ttyTaken(ctx: ?*anyopaque, pane: u8) bool {