Credit balance is too low

**Bug Description**
vvv

**Environment Info**
- Platform: linux
- Terminal: windows-terminal
- Version: 2.1.239
- Feedback ID: 2e36e28f-41a4-426e-8ef1-0b0c37f2abbd

**Errors**
```json
[{"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_011CeGphKfhi1XAd3tJp1z1E\"}\n at generate (/$bunfs/root/cli:39:39492)\n at makeRequest (/$bunfs/root/cli:90:8063)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-08-22T00:15:21.597Z"},{"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_011CeGpjFYiHfdP6QHLgMGRs\"}\n at generate (/$bunfs/root/cli:39:39492)\n at makeRequest (/$bunfs/root/cli:90:8063)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-08-22T00:15:47.772Z"}]
```

Start with the supplied Feedback ID and the two Anthropic API error records, then inspect the bundled CLI entry point at /$bunfs/root/cli. The issue does not name source files, tests, or an expected behavior, so the change and completion criteria need to be established before implementation.

索引モデルが issue の本文から書いたものです。