feat: add thinking mode setting for OpenAI Compatible provider

[roomote]

This PR attempts to address Issue #10603. Feedback and guidance are welcome.

Summary

When using the OpenAI Compatible provider with thinking models like Kimi K2, DeepSeek Reasoner, or GLM-4, the thinking/reasoning output was not working because the thinking: { type: "enabled" } parameter was not being sent in the API request.

Changes

Core Changes

• packages/types/src/provider-settings.ts: Added openAiThinkingModeEnabled setting to the OpenAI schema
• src/api/providers/openai.ts: Added thinking parameter handling for both streaming and non-streaming modes

UI Changes

• webview-ui/src/components/settings/ThinkingModeSetting.tsx: New UI component for the thinking mode toggle
• webview-ui/src/components/settings/providers/OpenAICompatible.tsx: Integrated the new setting into the OpenAI Compatible settings panel

Translations

• Added translations for the new setting (enableThinkingMode, enableThinkingModeTips) to all 18 locale files

Tests

• src/api/providers/tests/openai.spec.ts: Added 6 new tests covering streaming/non-streaming modes with thinking mode enabled/disabled/undefined

How to Test

1. Configure OpenAI Compatible provider with a thinking model (e.g., Kimi K2)
2. Enable the new "Enable thinking mode" checkbox in settings
3. Send a message and verify that reasoning content is returned

Related Issues

Fixes #10603

---

Important

Adds thinking mode setting for OpenAI Compatible provider, updating API handling, UI components, translations, and tests.

• Behavior:
  • Adds openAiThinkingModeEnabled setting to OpenAI schema in provider-settings.ts.
  • Updates openai.ts to handle thinking parameter for streaming and non-streaming modes.
• UI:
  • New component ThinkingModeSetting.tsx for thinking mode toggle.
  • Integrates setting into OpenAICompatible.tsx.
• Translations:
  • Adds translations for enableThinkingMode and enableThinkingModeTips in 18 locale files.
• Tests:
  • Adds tests in openai.spec.ts for thinking mode in streaming/non-streaming modes.

^{This description was created by for ab9a4e3. You can customize this summary. It will automatically update as commits are pushed.}

[roomote]

Rooviewer   See task on Roo Cloud

Review complete. No issues found.

The implementation is clean and follows existing patterns:

• Schema change properly extends openAiSchema with openAiThinkingModeEnabled
• Handler correctly applies thinking parameter in both streaming and non-streaming modes
• UI component follows the existing R1FormatSetting pattern
• Test coverage for enabled/disabled/undefined states
• All 18 locale files updated with translations

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}