Tty in a missing directory fails and makes no pane; a shell that never started answers runs

The host could not start the shell (its chdir failed), and the pane stayed
with no pty: a run written to it waited for a prompt for ever. Tty now
refuses a directory that is not there, `Tty: <dir>: no such directory`,
before making a pane; and a terminal whose shell the host could not start
(Pardes.shellFailed, from each host's spawn) answers any run with
`error shell gone`.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gui/gui.zig b/src/gui/gui.zig
index bd2dca69..d36cf187 100644
--- a/src/gui/gui.zig
+++ b/src/gui/gui.zig
@@ -4519,7 +4519,7 @@ fn spawnPane(ctx: ?*anyopaque, pane: u8, cwd: []const u8) void {
     s.closePty(pane);
     if (s.ptys[pane] != null) return s.core.reportError(pane, "shell", error.WorkersBusy);
     s.gens[pane] +%= 1;
-    const child = host_io.forkShell(s.core, pane, s.prompt_rcs, s.core.shellBin(), cwd, s.core.screen_h, s.core.screen_w, s.fs) catch |err| return s.core.reportError(pane, "shell", err);
+    const child = host_io.forkShell(s.core, pane, s.prompt_rcs, s.core.shellBin(), cwd, s.core.screen_h, s.core.screen_w, s.fs) catch |err| return s.core.shellFailed(pane, err);
     const command = s.core.panes[pane].?.command != null;
     const pt: Pty = .{ .fd = child.file.handle, .pid = child.pid, .serial = s.core.panes[pane].?.serial, .cmd = .{ .watched = command and host_io.watchExit(child.pid), .fd = child.file.handle } };
     s.ptys[pane] = pt;