Credit balance is too low

Bug Description
Bug: Claude Code consumed 160k+ tokens per request without authorization and ignored model switch request
During a session on March 19, 2026 (21:35-21:40 GMT-3), Claude Code automatically read all project files on every single request, accumulating 160,000+ input tokens per turn without my explicit permission. Additionally, I requested a model switch to Haiku but the model remained on claude-sonnet-4-6, resulting in ~$9 USD consumed in a single session.
Request IDs:

req_011CZDQBn1jYAF1yPonA1vaM
req_011CZDQ8m7pW7zW9bNgCRxnn
req_011CZDQ7S7nxRDddiegntYQg
req_011CZDPxwUtBSPFxCTQHtZaU
req_011CZDPvNCMCr9HGqDP2Q8Qt

Expected behavior: Model should switch when requested. File reading should not accumulate unbounded context across turns.

Environment Info

• Platform: win32
• Terminal: null
• Version: 2.1.79
• Feedback ID: 0dd776a8-833d-4bfb-bc18-661225638f21

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"Your credit balance is too low to access the Anthropic API. Please go to Plans & Billing to upgrade or purchase credits.\"},\"request_id\":\"req_011CZEDE5Fqrd7nHnkghHQwW\"}\n    at d7.generate (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:284:12701)\n    at iC.makeStatusError (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:2195)\n    at iC.makeRequest (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:5420)\n    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)\n    at async KZ8.maxRetries (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:7241:4892)\n    at async KZ8 (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2187:7852)\n    at async va4 (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3029:22979)\n    at async bNq (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:7241:4759)\n    at async file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:7501:1203","timestamp":"2026-03-20T10:56:39.323Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"Your credit balance is too low to access the Anthropic API. Please go to Plans & Billing to upgrade or purchase credits.\"},\"request_id\":\"req_011CZEDGcA1jj8Ajp4jamw4z\"}\n    at d7.generate (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:284:12701)\n    at iC.makeStatusError (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:2195)\n    at iC.makeRequest (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:5420)\n    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)","timestamp":"2026-03-20T10:57:13.451Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"Your credit balance is too low to access the Anthropic API. Please go to Plans & Billing to upgrade or purchase credits.\"},\"request_id\":\"req_011CZEF2DjUfD1syLSwMVGHd\"}\n    at d7.generate (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:284:12701)\n    at iC.makeStatusError (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:2195)\n    at iC.makeRequest (file:///C:/Users/rwali/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:323:5420)\n    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)","timestamp":"2026-03-20T11:20:12.101Z"}]