Add GLM 4.6 and LongCat Flash Thinking for Chutes AI provider

[leakless21]

Problem (one or two sentences)

The Roo Code extension currently lacks support for the zai-org/GLM-4.6-FP8 (200k context window) and meituan-longcat/LongCat-Flash-Thinking-FP8 (128k context window) models on the Chutes AI provider. These model performs on par or very close to with SOTA models while being much faster and cheaper.

Context (who is affected and when)

This affects all Roo Code users who needs efficient models for complex reasoning, coding, and creative tasks. There are no options for these models in Roo Code/ Chutes AI.

Desired behavior (conceptual, not technical)

The user should see and be able to select zai-org/GLM-4.6-FP8 and meituan-longcat/LongCat-Flash-Thinking-FP8 models inside Roo Code, specifically Chutes AI provider

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)

No response

Trade-offs / risks (optional)

No response

[roomote]

I'm exploring a potential fix for adding GLM-4.6-FP8 and LongCat-Flash-Thinking-FP8 models to the Chutes AI provider. I'll open a PR to share progress.

[roomote]

Opened PR #8426 with my attempt at addressing this issue. The implementation adds both GLM-4.6-FP8 (200K context) and LongCat-Flash-Thinking-FP8 (128K context) models to the Chutes AI provider. All CI checks have passed. Feedback welcome!

PR: #8426