[Bug] Anthropic API Error: Content policy violation with reasoning extraction

**Bug Description**
⏺ API Error: Fable 5.1's safeguards flagged this message (https://www.anthropic.com/legal/aup). This sometimes happens with safe, normal conversations. Claude Code can't respond to this message with Fable 5.1.

Double press esc to edit your last message, or try a different model with /model.

Send feedback with /feedback or learn more: https://support.claude.com/en/articles/15363606

Details: `[reasoning_extraction]`

Request ID: req_011Cf2tWfvw42bSbnojv8rp7

**Environment Info**
- Platform: darwin
- Terminal: iTerm.app
- Version: 2.1.270
- Feedback ID: 498349cc-262d-456a-8309-bf9d031e4695

**Errors**
```json
[]
```

please....

Start by reproducing the reported failure in Claude Code on darwin using iTerm.app with a safe, normal conversation, and note whether the [reasoning_extraction] detail recurs. Compare the behavior with the reported Fable 5.1 model and request context; done requires identifying a reproducible cause or a clear maintainer follow-up path.

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