bug: fix steam multi launch

Author: lukepolo

src/lib/steam.sh

@@ -1500,7 +1500,7 @@ cloud_conflict_active() {
 # scope; we invoke it as `"$1"`.
 wait_for_cs2_process() {
   local applaunch_fn="${1:?applaunch function name required}"
-  local pid="" i=0 cloud_pokes=0 cloud_detected=0
+  local pid="" i=0 cloud_pokes=0 cloud_detected=0 steam_gone=0
   # Re-applaunch recovery state (see header): count + last loop we re-launched.
   local relaunches=0 last_relaunch_i=0
 
@@ -1551,6 +1551,27 @@ wait_for_cs2_process() {
 
     [ $(( i % 15 )) -eq 0 ] && log "  ${i}s elapsed waiting on cs2..."
 
+    # Steam client watchdog: the client can segfault after boot (breakpad dump
+    # fires, the steam.sh wrapper survives holding the IPC pipe) — every
+    # applaunch then "forwards" into the corpse and cs2 never spawns. Three
+    # consecutive 5s checks with no client process = dead → full restart.
+    if [ $(( i % 5 )) -eq 0 ]; then
+      if pgrep -f 'ubuntu12_32/steam' >/dev/null 2>&1; then
+        steam_gone=0
+      else
+        steam_gone=$(( steam_gone + 1 ))
+        if [ "$steam_gone" -ge 3 ]; then
+          log "  Steam client process gone ~15s (segfault?) — restarting Steam"
+          kill_steam
+          start_steam
+          wait_for_steam_pipe "${STEAM_PIPE_TIMEOUT:-300}"
+          wait_for_main_steam_window "${STEAM_WINDOW_TIMEOUT:-300}" || true
+          steam_gone=0; cloud_pokes=0; relaunches=0; last_relaunch_i=$i
+          "$applaunch_fn"
+        fi
+      fi
+    fi
+
     # Surface a Steam game-file validation pass (corrupt-files repair / partial
     # update) as status=validating. Self-throttles; no-op when not validating.
     # Capture whether it's actively validating so re-applaunch holds off.