Cowork → Customise → Connect hangs after OAuth completes —...

Bug Description
Cowork → Customise → Connect hangs after OAuth completes — browser opens and auth succeeds but the desktop app never detects completion. Started today with 2.1.163/2.1.165.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.0.5
• Feedback ID: 81275bae-c5ad-48ad-a39a-17ff70300a6b

Errors

[{"error":"Error\n    at JC (/$bunfs/root/claude:536:1083)\n    at I1 (/$bunfs/root/claude:537:9957)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:862:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:539:2105)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-06-05T15:14:55.442Z"},{"error":"Error: 404 {\"type\":\"error\",\"error\":{\"type\":\"not_found_error\",\"message\":\"model: claude-3-5-haiku-20241022\"},\"request_id\":\"req_011CbkLDyD5cigCD6N1fqAim\"}\n    at new Y5 (unknown:1:28)\n    at new _Y (/$bunfs/root/claude:732:18247)\n    at new Lb (unknown:1:28)\n    at generate (/$bunfs/root/claude:732:18807)\n    at makeRequest (/$bunfs/root/claude:871:5359)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-06-05T15:15:13.541Z"}]