build: restore the single-instance launcher

run.sh

@@ -1,35 +1,8 @@
 #!/bin/sh
 
-set -eu
-
 cd "$(dirname "$0")"
-
-strans_pid=
-xim_pid=
-
-cleanup()
-{
-	trap - 0 1 2 15
-	if test -n "$xim_pid"; then
-		kill "$xim_pid" 2>/dev/null || true
-		wait "$xim_pid" 2>/dev/null || true
-	fi
-	if test -n "$strans_pid"; then
-		kill "$strans_pid" 2>/dev/null || true
-		wait "$strans_pid" 2>/dev/null || true
-	fi
-}
-
-trap cleanup 0 1 2 15
-
-./strans map font &
-strans_pid=$!
+pkill strans
+sleep 1
+./strans map font &
 sleep 1
-kill -0 "$strans_pid"
-
 xim/strans-xim &
-xim_pid=$!
-
-while kill -0 "$strans_pid" 2>/dev/null && kill -0 "$xim_pid" 2>/dev/null; do
-	sleep 1
-done