[Bug] ASCII graph rendering fails with Chinese characters

Bug Description
ASCII graphs containing Chinese characters always break.

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 2.1.66
• Feedback ID: b8ed86da-5fe4-478d-8d14-593fec79d1e3

Errors

[{"error":"Error: {\"message\":\"Failed to export 4 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\",\"originalLine\":\"6264\",\"originalColumn\":\"1713\",\"line\":\"6264\",\"column\":\"1713\",\"sourceURL\":\"/$bunfs/root/claude\",\"stack\":\"Error: Failed to export 4 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\\n    at doExport (/$bunfs/root/claude:6264:1713)\\n    at processTicksAndRejections (native:7:39)\",\"name\":\"Error\"}\n    at error (/$bunfs/root/claude:2402:25029)\n    at <anonymous> (/$bunfs/root/claude:119:92465)\n    at A4D (/$bunfs/root/claude:119:93009)\n    at <anonymous> (/$bunfs/root/claude:120:17366)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:11:47.472Z"},{"error":"Error: 1P event logging: 1 events failed to export (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\n    at queueFailedEvents (/$bunfs/root/claude:6264:2654)\n    at async doExport (/$bunfs/root/claude:6264:1561)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:12:47.668Z"},{"error":"Error: {\"message\":\"Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\",\"originalLine\":\"6264\",\"originalColumn\":\"1713\",\"line\":\"6264\",\"column\":\"1713\",\"sourceURL\":\"/$bunfs/root/claude\",\"stack\":\"Error: Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\\n    at doExport (/$bunfs/root/claude:6264:1713)\\n    at processTicksAndRejections (native:7:39)\",\"name\":\"Error\"}\n    at error (/$bunfs/root/claude:2402:25029)\n    at <anonymous> (/$bunfs/root/claude:119:92465)\n    at A4D (/$bunfs/root/claude:119:93009)\n    at <anonymous> (/$bunfs/root/claude:120:17366)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:12:47.669Z"},{"error":"Error: 1P event logging: 1 events failed to export (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\n    at queueFailedEvents (/$bunfs/root/claude:6264:2654)\n    at async doExport (/$bunfs/root/claude:6264:1561)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:20:44.633Z"},{"error":"Error: {\"message\":\"Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\",\"originalLine\":\"6264\",\"originalColumn\":\"1713\",\"line\":\"6264\",\"column\":\"1713\",\"sourceURL\":\"/$bunfs/root/claude\",\"stack\":\"Error: Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\\n    at doExport (/$bunfs/root/claude:6264:1713)\\n    at processTicksAndRejections (native:7:39)\",\"name\":\"Error\"}\n    at error (/$bunfs/root/claude:2402:25029)\n    at <anonymous> (/$bunfs/root/claude:119:92465)\n    at A4D (/$bunfs/root/claude:119:93009)\n    at <anonymous> (/$bunfs/root/claude:120:17366)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:20:44.634Z"},{"error":"Error: 1P event logging: 1 events failed to export (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\n    at queueFailedEvents (/$bunfs/root/claude:6264:2654)\n    at async doExport (/$bunfs/root/claude:6264:1561)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:21:06.251Z"},{"error":"Error: {\"message\":\"Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\",\"originalLine\":\"6264\",\"originalColumn\":\"1713\",\"line\":\"6264\",\"column\":\"1713\",\"sourceURL\":\"/$bunfs/root/claude\",\"stack\":\"Error: Failed to export 1 events (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\\n    at doExport (/$bunfs/root/claude:6264:1713)\\n    at processTicksAndRejections (native:7:39)\",\"name\":\"Error\"}\n    at error (/$bunfs/root/claude:2402:25029)\n    at <anonymous> (/$bunfs/root/claude:119:92465)\n    at A4D (/$bunfs/root/claude:119:93009)\n    at <anonymous> (/$bunfs/root/claude:120:17366)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-04T06:21:06.252Z"},{"error":"Error: 1P event logging: 17 events failed to export (status=429, code=ERR_BAD_REQUEST, Request failed with status code 429)\n    at queueFailedEvents (/$bunfs/root/claude:6264:2654)\n    at…

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