fix(auth): close cancellation and workspace races

tools/tht/internal/compose/process_unix.go

@@ -15,6 +15,25 @@ func configureProcess(command *exec.Cmd) {
 	command.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 }
 
+type unixProcessLifetime struct {
+	command *exec.Cmd
+}
+
+func startProcess(command *exec.Cmd) (processLifetime, error) {
+	if err := command.Start(); err != nil {
+		return nil, err
+	}
+	return unixProcessLifetime{command: command}, nil
+}
+
+func (process unixProcessLifetime) terminate(done <-chan error) error {
+	return terminateProcess(process.command, done)
+}
+
+func (unixProcessLifetime) close() error {
+	return nil
+}
+
 func terminateProcess(command *exec.Cmd, done <-chan error) error {
 	if command.Process == nil {
 		return nil