[Feature]: gpt 5.4 mini in the default models list

[yoav0gal]

Before submitting

• I searched existing issues and did not find a duplicate.
• I am describing a concrete problem or use case, not just a vague idea.

Area

apps/web

Problem or use case

Hey!
OpenAI just dropped GPT-5.4 mini!
I'd like to use it in t3code! lets add it!
lets add it to the default model list!

Proposed solution

A simple prompt in t3code haha something like:

Hey!
OpenAI just dropped GPT-5.4 mini! 
I'd like to use it in t3code! lets add it! 
lets add it to the default model list! 

😂 😂 😂

Why this matters

Cool model,
Small, Fast, quite powerful, I think it would be used!

Smallest useful scope

Just add it as an option in the model selector

Alternatives considered

No response

Risks or tradeoffs

No response

Examples or references

No response

Contribution

• I would be open to helping implement this.

[yoav0gal]

Just to be clear!
If you want to use 5.4 mini now, you can add it in the settings (as a custom model) with the: gpt-5.4-mini

I just think it should be in the list! (I think it's a one liner + tets )

[maria-rcks]

it was added here: 579a69e will be in the next release.