Add TemuClaude to Chatbot Arena — OpenAI-compatible API endpoint

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## Model Submission: TemuClaude

I'd like to add **TemuClaude** to the Chatbot Arena for blind testing.

### API Details

- **Endpoint:** `https://saifulbusiness47--temuclaude-serve.modal.run/v1/chat/completions`
- **Format:** OpenAI-compatible Chat Completions API
- **Method:** POST
- **No API key required** (open access for evaluation)
- **Health check:** GET `https://saifulbusiness47--temuclaude-serve.modal.run/health`
- **Model list:** GET `https://saifulbusiness47--temuclaude-serve.modal.run/v1/models`
- **Model name:** `temuclaude`

### About TemuClaude

TemuClaude is a multi-model orchestration pipeline — not a single model. It routes queries across 8 models based on difficulty:

1. **Trivial queries** → cheapest model (Hy3 Preview)
2. **Medium queries** → specialist routing (DeepSeek for math, MiniMax for creative, MiMo for multimodal)
3. **Hard queries** → full Mixture-of-Agents pipeline:
- 3 models propose in parallel (GLM-5.2 + DeepSeek V4 Pro + Gemini 3.5 Flash)
- Aggregation by GLM-5.2 (consensus analysis, contradiction resolution)
- QA gate scoring by Nemotron (5-rubric, independent judge)
- Reflexion retry if QA < 8 (DeepSeek with feedback)
- Frontier fallback if QA < 6 (Claude Sonnet 5)
- Self-consistency for math (3 samples, majority vote)

### Test Command

```bash
curl -X POST https://saifulbusiness47--temuclaude-serve.modal.run/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{"model":"temuclaude","messages":[{"role":"user","content":"What is the capital of France?"}]}'
```

### Hosting

Hosted on Modal (serverless, auto-scaling). Max duration 120s per request. Timeout safeguard at 45s with single-model fallback.

The endpoint is live and ready for integration.

**Contact:** saifulbusiness47@gmail.com

No repository files or tests are named. Start by locating FastChat's Chatbot Arena model-registration entry point, then verify the supplied health, model-list, and chat-completions endpoints with the curl example. Done means TemuClaude is available for blind testing under the model name `temuclaude` without breaking existing arena models.

Written by the indexing model from the issue text.