Startup banner shows Opus 5 instead of Fable 5 for the selected model

Environment

• Claude Code: 2.1.211 (native installer)
• OS: Windows 11 Pro (10.0.26200)

Summary

The startup banner renders the active model's name incorrectly, showing
"Opus 5" when the selected model is Fable 5 (claude-fable-5). This is a display
bug in the banner label only.

Note on correctness

"Opus 5" is not a real model. Opus is 4.8; Fable is 5. So the banner is doubly
wrong: it names a nonexistent version and it names the wrong family.

Expected

Banner reads "Fable 5" for claude-fable-5.

Actual

Banner reads "Opus 5".

Notes

Not captured in the debug log (UI render only); reported from direct observation
after the 2.1.206 -> 2.1.211 update.