style: fix formatting (black + cargo fmt)

[devin-ai-integration]

Overview:

Fix formatting issues flagged by CI on upstream PR ai-dynamo#10939.

Details:

• black: Collapse multi-line RepetitionDetectionParams(**value) to single line in handlers.py
• cargo fmt: Reformat matches! macro, anyhow::bail! macros, and assert_eq! in validate.rs and chat_completions.rs

Where should the reviewer start?

All changes are auto-formatter output — no logic changes.

Related Issues

🚫 This PR is NOT linked to an issue:

• Confirmed — no related issue

Link to Devin session: https://app.devin.ai/sessions/f1910643f0cb4b90b9f8698f6b639810
Requested by: @raunakdoesdev

[devin-ai-integration]

Original prompt from Raunak

SYSTEM:
=== BEGIN THREAD HISTORY (in #proj-modal-at-home) ===
Sravan Puttagunta (U0B0RDKAR3N): if you fix that issue, we should see maverick route to GPU as well

Jean Ghislain Billa (U08V1RU5R54): So repetition detection is a specific parameter than VLLM added to the OpenAI API. The NVIDIA dynamo frontend parser does not let the parameter through. A proper fix would require making a custom fork of nvidia dynamo and patching. I don't think it's worth the lift for now, I want to prioritize getting traffic in.
Currently, we only use it with key-value so I think it's okay to forego repetition detection for requests going to Dynamo for now: <https://github.com/reductoai/api/pull/7567|github.com/reductoai/api/pull/7567>. Maverick also has a super low repetition rate.
I will do a follow up on this if necessary in the future. @Sravan Puttagunta

<most_recent_message>
Raunak Chowdhuri (U0615F96QH2): @Devin is there a way to pass this in as additional arguments or something like that as an alternative here? I'm sure dynamo has some support for extra body or something like that no? can you take a look at the context and suggest something here
</most_recent_message>
=== END THREAD HISTORY ===

Thread URL: https://reductoai.slack.com/archives/C0B9PCXP874/p1782180596276739?thread_ts=1782180596.276739&amp;cid=C0B9PCXP874

The latest message is the one right above that tagged you. The <most_recent_message> is the message that you should use to guide your goals + task for this session, and you should use the rest of the slack thread as context.

[devin-ai-integration]

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