[Feature Request] Allow user override for Fable model selection when blocked by safety policies

Bug Description
I specifically requested Fable 5 for the last few hours of availability to run a security audit and produce a report on my local system's OS. The overly broad cybersecurity block for Fable 5 dropped me back to Opus 4.8. I don't mind Opus, but I wanted to take advantage of Fable's much stronger threat and security analysis, reporting, and mitigation capabilities so that I can make my own system more resilient and secure.

Environment Info

• Platform: linux
• Terminal: kitty
• Version: 2.1.202
• Feedback ID: f55637a4-680d-4571-909b-49af762f3eb3

Errors

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