Fix OpenRouter section: remove fake 'openrouter/auto', use real model IDs from OpenClaw docs

README.md

@@ -268,13 +268,19 @@ Models: `amazon/nova-premier-v1` · `amazon/nova-pro-v1` · `amazon/nova-lite-v1
 ### OpenRouter (300+ models via single API key)
 ```
 LLM_API_KEY=sk-or-v1-...
-LLM_MODEL=openrouter/auto
+LLM_MODEL=openrouter/anthropic/claude-sonnet-4-6
 ```
 With OpenRouter, you can access **every model above** with a single API key! Just prefix with `openrouter/`:
-- `openrouter/openai/gpt-5.4-pro`
-- `openrouter/anthropic/claude-opus-4-6`
-- `openrouter/deepseek/deepseek-v3.2`
-- `openrouter/qwen/qwen3.6-plus-preview:free`
+- `openrouter/anthropic/claude-sonnet-4-6` — Anthropic Claude
+- `openrouter/openai/gpt-5.4` — OpenAI (1M context)
+- `openrouter/deepseek/deepseek-v3.2` — DeepSeek V3.2
+- `openrouter/google/gemini-2.5-flash` — Google Gemini
+- `openrouter/qwen/qwen3.6-plus-preview:free` — Qwen (free!)
+- `openrouter/x-ai/grok-4.20-beta` — xAI Grok
+- `openrouter/meta-llama/llama-3.3-70b-instruct:free` — Llama (free!)
+- `openrouter/mistralai/mistral-large-2512` — Mistral Large
+- `openrouter/moonshotai/kimi-k2.5` — Moonshot Kimi
+- `openrouter/z-ai/glm-5-turbo` — Z.ai GLM
 
 Get key from: [OpenRouter.ai](https://openrouter.ai) · [Full model list](https://openrouter.ai/models)