[Bug] Model selection protocol not followed correctly

Bug Description
trouble following my model selection protocol

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.45
• Feedback ID: 47fe0874-5be4-40c7-a6c8-8c87e3aac194

Errors

[{"error":"FileTooLargeError: File content (2.6MB) exceeds maximum allowed size (256KB). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at hI_ (/$bunfs/root/claude:1121:402)\n    at async IY_ (/$bunfs/root/claude:1290:2402)\n    at async call (/$bunfs/root/claude:1295:5924)\n    at async <anonymous> (/$bunfs/root/claude:5780:2040)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T03:47:44.951Z"},{"error":"Error: File does not exist. Current working directory: /Users/fred/xcu_my_apps/nimble/codexes-factory\n    at call (/$bunfs/root/claude:1295:6219)\n    at async <anonymous> (/$bunfs/root/claude:5780:2040)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T03:52:05.821Z"},{"error":"Error: File does not exist. Current working directory: /Users/fred/xcu_my_apps/nimble/codexes-factory\n    at call (/$bunfs/root/claude:1295:6219)\n    at async <anonymous> (/$bunfs/root/claude:5780:2040)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:15:18.064Z"},{"error":"Error: This PDF has 285 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:15:40.844Z"},{"error":"Error: File does not exist. Current working directory: /Users/fred/xcu_my_apps/nimble/codexes-factory\n    at call (/$bunfs/root/claude:1295:6219)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:17:26.398Z"},{"error":"Error: This PDF has 285 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:17:26.411Z"},{"error":"Error: This PDF has 328 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:18:26.266Z"},{"error":"Error: This PDF has 328 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:18:34.267Z"},{"error":"Error: This PDF has 184 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:25:48.098Z"},{"error":"Error: This PDF has 184 pages, which is too many to read at once. Use the pages parameter to read specific page ranges (e.g., pages: \"1-5\"). Maximum 20 pages per request.\n    at IY_ (/$bunfs/root/claude:1290:1402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T04:25:48.113Z"},{"error":"Error\n    at <anonymous> (/$bunfs/root/claude:43:10685)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/claude:42:5642)\n    at request (/$bunfs/root/claude:45:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T05:00:01.164Z"},{"error":"Error\n    at <anonymous> (/$bunfs/root/claude:43:10685)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/claude:42:5642)\n    at request (/$bunfs/root/claude:45:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T05:06:28.739Z"},{"error":"Error\n    at <anonymous> (/$bunfs/root/claude:43:10685)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/claude:42:5642)\n    at request (/$bunfs/root/claude:45:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-19T05:27:18.024Z"},{"error":"FileTooLargeError: File content (1.5MB) exceeds maximum allowed size (256KB). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at hI_ (/$bunfs/root/claude:1121:402)\n    at async IY_ (/$bunfs/root/claude:1290:2402)\n    at async call (/$bunfs/root/claude:1295:5924)\n    at async <anonymous> (/$bunfs/…

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