feat(server): bump models (#15013)

#### PR Dependency Tree


* **PR #15013** 👈

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## Summary by CodeRabbit

* **New Features**
* Expanded AI capabilities with the addition of Gemini 3.5 Flash model,
providing enhanced options for AI-powered features.

* **Updates**
* Updated Claude Sonnet to the latest version for improved performance.
  * Refreshed pro models configuration with optimized selections.

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