[Bug] Degraded code generation quality and increased correction rate

Bug Description
Claude seems a little dumber over the last couple of days. I can't put finger on a specific thing but I've noticed I have to correct it more.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.20
• Feedback ID: 279f66f9-3f57-4a5e-805f-9b0904900c76

Errors

[{"error":"Error: ENOENT: no such file or directory, scandir '/Library/Application Support/ClaudeCode/.claude/skills'\n    at readdirSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:2063)\n    at oW (/$bunfs/root/claude:11:35584)\n    at readdirSync (/$bunfs/root/claude:12:2024)\n    at MIR (/$bunfs/root/claude:1758:380)\n    at MIR (/$bunfs/root/claude:1758:1350)\n    at <anonymous> (/$bunfs/root/claude:1758:4670)\n    at <anonymous> (/$bunfs/root/claude:1758:5401)\n    at A (/$bunfs/root/claude:11:7259)\n    at fw8 (/$bunfs/root/claude:4826:4342)","timestamp":"2026-01-28T00:07:31.576Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"output_config: Extra inputs are not permitted\"},\"request_id\":\"req_011CXYoe3JXKgpfxZ183hLxW\"}\n    at generate (/$bunfs/root/claude:145:37631)\n    at makeRequest (/$bunfs/root/claude:162:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:09:45.718Z"},{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"API\"\n    at <parse> (:0)\n    at parse (unknown)\n    at <anonymous> (/$bunfs/root/claude:70:855)\n    at A (/$bunfs/root/claude:11:7259)\n    at Wt_ (/$bunfs/root/claude:1540:40110)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:09:45.719Z"},{"error":"MaxFileReadTokenExceededError: File content (32339 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at dxB (/$bunfs/root/claude:3536:3052)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:10:21.801Z"},{"error":"MaxFileReadTokenExceededError: File content (32339 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at dxB (/$bunfs/root/claude:3536:3052)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:10:26.520Z"},{"error":"MaxFileReadTokenExceededError: File content (32339 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at dxB (/$bunfs/root/claude:3536:3052)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:10:51.975Z"},{"error":"AbortError: The operation was aborted.\n    at unknown\n    at abortChildProcess (node:child_process:935:42)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (/$bunfs/root/claude:5165:2153)","timestamp":"2026-01-28T00:12:33.430Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"output_config: Extra inputs are not permitted\"},\"request_id\":\"req_011CXYp6YLVeVgciLva5B9X7\"}\n    at generate (/$bunfs/root/claude:145:37631)\n    at makeRequest (/$bunfs/root/claude:162:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:15:45.278Z"},{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"API\"\n    at <parse> (:0)\n    at parse (unknown)\n    at <anonymous> (/$bunfs/root/claude:70:855)\n    at A (/$bunfs/root/claude:11:7259)\n    at Wt_ (/$bunfs/root/claude:1540:40110)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:15:45.279Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"output_config: Extra inputs are not permitted\"},\"request_id\":\"req_011CXYp71wBG3TTyKZ9KqBtR\"}\n    at generate (/$bunfs/root/claude:145:37631)\n    at makeRequest (/$bunfs/root/claude:162:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:15:51.678Z"},{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"API\"\n    at <parse> (:0)\n    at parse (unknown)\n    at <anonymous> (/$bunfs/root/claude:70:855)\n    at A (/$bunfs/root/claude:11:7259)\n    at Wt_ (/$bunfs/root/claude:1540:40110)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-28T00:15:51.679Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"output_config: Extra inputs are…

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