• Merge pull request #1501 from kaitranntt/kai/fix/1500-bar-launch-reuse
• perf(bar): probe reuse candidates concurrently to avoid launch stalls
• fix(bar): probe IPv6 loopback when detecting a running CCS server
• docs(bar): troubleshooting reflects reuse-first launch behavior
• fix(bar): reuse a running CCS web-server and probe ports on the bind host