[ENHANCEMENT] Add SiliconCloud provider support

[AnotiaWang]

Problem (one or two sentences)

SiliconCloud is a LLM inference platform that offers up-to-date SOTA models with competitive pricing.

However, when using SiliconCloud as an OpenAI compatible provider, I noticed three issues:

1. SiliconCloud by default disables reasoning for some models, like GLM-4.6 or DeepSeek V3.1 Terminus. This could result in degraded model performance in complex tasks.
2. Its reasoning params (enable_thinking and thinking_budget) are different from OpenAI's.
3. When trying out new models, I have to update the context length and pricing in settings as well, which is kind of annoying

Context (who is affected and when)

The OpenAI compatible provider does not fit SiliconCloud well

Desired behavior (conceptual, not technical)

Implement a dedicated provider for SiliconCloud.

Constraints / preferences (optional)

No response

Request checklist

• I've searched existing Issues and Discussions for duplicates
• This describes a specific problem with clear context and impact

Roo Code Task Links (optional)

No response

Acceptance criteria (optional)

No response

Proposed approach (optional)

I've opened a PR that implements the SiliconCloud provider, based on the OpenAI compatible provider. For details please see #8551

Trade-offs / risks (optional)

No response

[roomote]

I'm exploring a potential fix for the missing SiliconCloud provider implementation file and will open a PR to share progress.

[roomote]

I've opened PR #8552 with my implementation of the SiliconCloud provider support.

The implementation addresses the issues you mentioned:

• ✅ Dedicated provider with proper reasoning parameter handling (enable_thinking, thinking_budget)
• ✅ Multiple API endpoints for different regions
• ✅ Pre-configured model list with pricing information

The PR extends the BaseOpenAiCompatibleProvider for consistency with other providers and includes UI integration. CI checks are currently running.

Feedback and suggestions are welcome!

[AnotiaWang]

@hannesrudolph Could you please explain why this is closed?