[Bug] Plan mode "Write your own text" step blocks submission and progress

Bug Description
I got stuck in the "Write your own text" part of Plan mode. I was unable to submit and move on to the next step.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.0.27
• Feedback ID: 42ef5234-a7dd-4d2b-b265-76e4f1840e6a

Errors

[{"error":"Error\n    at nL (/$bunfs/root/claude:53:1142)\n    at <anonymous> (/$bunfs/root/claude:58:9841)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:862:50)\n    at processTicksAndRejections (native:7:39)\n    at spawnSync (unknown)\n    at spawnSync (node:child_process:226:22)\n    at r00 (/$bunfs/root/claude:88:1337)\n    at JW (/$bunfs/root/claude:88:3436)\n    at read (/$bunfs/root/claude:762:2883)\n    at request (/$bunfs/root/claude:60:2146)\n    at processTicksAndRejections (native:7:39)\n    at spawnSync (unknown)\n    at spawnSync (node:child_process:226:22)\n    at r00 (/$bunfs/root/claude:88:1337)\n    at JW (/$bunfs/root/claude:88:3436)\n    at read (/$bunfs/root/claude:762:2883)\n    at read (/$bunfs/root/claude:762:2154)\n    at <anonymous> (/$bunfs/root/claude:3570:13851)\n    at Q (/$bunfs/root/claude:11:15027)","timestamp":"2025-10-27T08:21:34.311Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvoRW1dBfMXrBm1vV3\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:44.066Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvoQkdR2KuArMdhowB\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:44.071Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvoRVoR7suxuvFUQrc\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:44.072Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvoSVXsAprQyDzFSaL\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:44.078Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvoUj33JiXv9RJNH1L\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:44.084Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid OAuth token. The provided token was not found or is malformed.\"},\"request_id\":\"req_011CUXNvtEUDEDhL991SrVnM\"}\n    at generate (/$bunfs/root/claude:380:25610)\n    at makeRequest (/$bunfs/root/claude:525:5345)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T08:21:45.222Z"},{"error":"AbortError: The operation was aborted.\n    at unknown\n    at abortChildProcess (node:child_process:937:42)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (/$bunfs/root/claude:3595:2045)","timestamp":"2025-10-27T08:35:48.837Z"},{"error":"Error: File has been unexpectedly modified. Read it again before attempting to write it.\n    at call (/$bunfs/root/claude:784:759)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-10-27T10:09:49.382Z"}]