[Bug] Anthropic API Error: Invalid JSON - No Low Surrogate in String

Bug Description
API Error: 400 The request body is not valid JSON: no low surrogate in string: line 1 column 195621 (char 195620)

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.143
• Feedback ID: 49dae3a1-9f9b-44dd-96bb-f6b4ce7820ad

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"The request body is not valid JSON: no low surrogate in string: line 1 column 195621 (char 195620)\"},\"request_id\":\"req_011CbB4WdzfHtPX5AiG9trL4\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:62291)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-19T01:29:34.326Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"The request body is not valid JSON: no low surrogate in string: line 1 column 195621 (char 195620)\"},\"request_id\":\"req_011CbB4c3k4EyTqPe49htSbL\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:62291)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-19T01:30:47.398Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"The request body is not valid JSON: no low surrogate in string: line 1 column 195621 (char 195620)\"},\"request_id\":\"req_011CbB4djBQD5ntMjkhUxVLJ\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:62291)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-19T01:31:10.418Z"}]