Model picker: no explicit entry for claude-opus-5 (unlike claude-fable-5[1m])

[break-the-build]

Summary

The Agent defaults / model picker dropdown in Buzz Desktop does not list claude-opus-5 as an explicit, named entry. By contrast, claude-fable-5[1m] does get an explicit versioned entry in the same list.

Current dropdown contents (as of 2026-07-24):

• Default model
• sonnet
• claude-fable-5[1m]
• opus
• haiku
• Custom model...

sonnet, opus, and haiku appear to be generic tier aliases rather than pinned model IDs, so there's no way to tell from the UI alone whether opus currently resolves to the latest Opus release. claude-opus-5 is only reachable by typing it manually into "Custom model...".

Expected behavior

Given claude-fable-5[1m] gets a named entry, claude-opus-5 (or whatever the current-generation Opus release is) should likely get similar first-class treatment in the built-in list, rather than only being reachable via the generic opus alias or manual "Custom model..." entry.

Workaround

Select "Custom model..." in the dropdown and enter claude-opus-5 manually — this does allow selecting it.

Notes

This was found while a user was trying to switch an agent to Opus 5 and initially assumed (incorrectly) that the picker was blocking use of the model entirely. It isn't — it's just missing a named entry, and the custom-model path works as a fallback.