fix(dev): auto-remove stale overmind socket on start

  A crashed overmind run leaves .overmind.sock behind, so the next
  bin/dev aborts with "overmind is already running". Remove the
  socket before starting, guarded by a pgrep check so a live
  session is never clobbered.

  Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: duy211099

bin/dev

@@ -4,6 +4,11 @@ export PORT="${PORT:-3000}"
 
 if command -v overmind 1> /dev/null 2>&1
 then
+  # Remove a stale socket left behind by a crashed run (no live overmind).
+  if [ -S ./.overmind.sock ] && ! pgrep -f "overmind start" > /dev/null 2>&1
+  then
+    rm -f ./.overmind.sock
+  fi
   overmind start -f Procfile.dev "$@"
   exit $?
 fi