[Bug] Remote task & prefix not working for background execution

Bug Description
THE & prefix for remote tasks is not working

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 2.1.49
• Feedback ID: 1577cce5-9987-4aaf-934c-9da065176ddc

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/sameer/.local/share/claude/versions/2.1.49 (expected in multi-process scenarios)\n    at PFR (/$bunfs/root/claude:2599:2098)\n    at iyA (/$bunfs/root/claude:2599:1209)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-20T08:41:45.508Z"}]