- Add 1M context window beta support for Claude Sonnet 4 on Vertex AI, enabling significantly larger context for complex tasks (PR #10209 by @hannesrudolph)

- Add native tool calling support for LM Studio and Qwen-Code providers, improving compatibility with local models (PR #10208 by @hannesrudolph)

- Add native tool call defaults for OpenAI-compatible providers, expanding native function calling across more configurations (PR #10213 by @hannesrudolph)

- Enable native tool calls for Requesty provider (PR #10211 by @daniel-lxs)

- Improve API error handling and visibility with clearer error messages and better user feedback (PR #10204 by @brunobergher)

- Add downloadable error diagnostics from chat errors, making it easier to troubleshoot and report issues (PR #10188 by @brunobergher)

- Fix refresh models button not properly flushing the cache, ensuring model lists update correctly (#9682 by @tl-hbk, PR #9870 by @pdecat)

- Fix additionalProperties handling for strict mode compatibility, resolving schema validation issues with certain providers (PR #10210 by @daniel-lxs)