docs: add Crusoe provider and XecGuard guardrail pages

docs/providers/crusoe.md

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+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+# Crusoe
+
+## Overview
+
+| Property | Details |
+|-------|-------|
+| Description | Crusoe Cloud provides GPU-accelerated inference for open-source large language models, optimized for performance and cost efficiency. |
+| Provider Route on LiteLLM | `crusoe/` |
+| Link to Provider Doc | [Crusoe Managed Inference Documentation ↗](https://docs.crusoecloud.com/managed-inference/overview/index.html) |
+| Base URL | `https://managed-inference-api-proxy.crusoecloud.com/v1` |
+| Supported Operations | [`/chat/completions`](#sample-usage) |
+
+<br />
+<br />
+
+**We support ALL Crusoe models, just set `crusoe/` as a prefix when sending completion requests**
+
+## Available Models
+
+| Model | Description | Context Window |
+|-------|-------------|----------------|
+| `crusoe/deepseek-ai/DeepSeek-R1-0528` | DeepSeek R1 reasoning model (May 2025) | 163,840 tokens |
+| `crusoe/deepseek-ai/DeepSeek-V3-0324` | DeepSeek V3 chat model (March 2025) | 163,840 tokens |
+| `crusoe/google/gemma-3-12b-it` | Google Gemma 3 12B instruction-tuned | 131,072 tokens |
+| `crusoe/meta-llama/Llama-3.3-70B-Instruct` | Llama 3.3 70B instruction-tuned | 131,072 tokens |
+| `crusoe/moonshotai/Kimi-K2-Thinking` | Kimi K2 extended thinking model | 262,144 tokens |
+| `crusoe/openai/gpt-oss-120b` | OpenAI 120B open-source model | 131,072 tokens |
+| `crusoe/Qwen/Qwen3-235B-A22B-Instruct-2507` | Qwen3 235B MoE instruction-tuned | 262,144 tokens |
+
+## Required Variables
+
+```python showLineNumbers title="Environment Variables"
+os.environ["CRUSOE_API_KEY"] = ""  # your Crusoe API key
+```
+
+## Usage - LiteLLM Python SDK
+
+### Non-streaming
+
+```python showLineNumbers title="Crusoe Non-streaming Completion"
+import os
+import litellm
+from litellm import completion
+
+os.environ["CRUSOE_API_KEY"] = ""  # your Crusoe API key
+
+messages = [{"content": "Hello, how are you?", "role": "user"}]
+
+# Crusoe call
+response = completion(
+    model="crusoe/meta-llama/Llama-3.3-70B-Instruct",
+    messages=messages
+)
+
+print(response)
+```
+
+### Streaming
+
+```python showLineNumbers title="Crusoe Streaming Completion"
+import os
+import litellm
+from litellm import completion
+
+os.environ["CRUSOE_API_KEY"] = ""  # your Crusoe API key
+
+messages = [{"content": "Write a short story about AI", "role": "user"}]
+
+# Crusoe call with streaming
+response = completion(
+    model="crusoe/meta-llama/Llama-3.3-70B-Instruct",
+    messages=messages,
+    stream=True
+)
+
+for chunk in response:
+    print(chunk)
+```
+
+### Function Calling
+
+```python showLineNumbers title="Crusoe Function Calling"
+import os
+import litellm
+from litellm import completion
+
+os.environ["CRUSOE_API_KEY"] = ""  # your Crusoe API key
+
+tools = [{
+    "type": "function",
+    "function": {
+        "name": "get_weather",
+        "description": "Get the current weather in a location",
+        "parameters": {
+            "type": "object",
+            "properties": {
+                "location": {
+                    "type": "string",
+                    "description": "The city and state, e.g. San Francisco, CA"
+                }
+            },
+            "required": ["location"]
+        }
+    }
+}]
+
+messages = [{"role": "user", "content": "What's the weather in Boston?"}]
+
+response = completion(
+    model="crusoe/meta-llama/Llama-3.3-70B-Instruct",
+    messages=messages,
+    tools=tools,
+    tool_choice="auto"
+)
+
+print(response)
+```
+
+## Usage - LiteLLM Proxy Server
+
+```yaml showLineNumbers title="config.yaml"
+model_list:
+  - model_name: llama-3.3-70b
+    litellm_params:
+      model: crusoe/meta-llama/Llama-3.3-70B-Instruct
+      api_key: os.environ/CRUSOE_API_KEY
+  - model_name: deepseek-r1
+    litellm_params:
+      model: crusoe/deepseek-ai/DeepSeek-R1-0528
+      api_key: os.environ/CRUSOE_API_KEY
+  - model_name: deepseek-v3
+    litellm_params:
+      model: crusoe/deepseek-ai/DeepSeek-V3-0324
+      api_key: os.environ/CRUSOE_API_KEY
+  - model_name: qwen3-235b
+    litellm_params:
+      model: crusoe/Qwen/Qwen3-235B-A22B-Instruct-2507
+      api_key: os.environ/CRUSOE_API_KEY
+  - model_name: kimi-k2
+    litellm_params:
+      model: crusoe/moonshotai/Kimi-K2-Thinking
+      api_key: os.environ/CRUSOE_API_KEY
+```
+
+## Custom API Base
+
+**Option 1: Environment variable**
+
+```python showLineNumbers title="Custom API Base via env var"
+import os
+from litellm import completion
+
+os.environ["CRUSOE_API_BASE"] = "https://custom.crusoecloud.com/v1"
+os.environ["CRUSOE_API_KEY"] = ""  # your API key
+
+response = completion(
+    model="crusoe/meta-llama/Llama-3.3-70B-Instruct",
+    messages=[{"content": "Hello!", "role": "user"}],
+)
+```
+
+**Option 2: Pass directly**
+
+```python showLineNumbers title="Custom API Base via parameter"
+from litellm import completion
+
+response = completion(
+    model="crusoe/meta-llama/Llama-3.3-70B-Instruct",
+    messages=[{"content": "Hello!", "role": "user"}],
+    api_base="https://custom.crusoecloud.com/v1",
+    api_key="your-api-key",
+)
+```
+
+## Supported OpenAI Parameters
+
+- `temperature`
+- `max_tokens`
+- `max_completion_tokens`
+- `top_p`
+- `frequency_penalty`
+- `presence_penalty`
+- `stop`
+- `n`
+- `stream`
+- `tools`
+- `tool_choice`
+- `response_format`
+- `seed`
+- `user`
+- `logit_bias`
+- `logprobs`
+- `top_logprobs`