docs: replace GitHub Copilot recommendations with OpenRouter/minimax-m2.7

GitHub Copilot is still supported but no longer recommended for new users.
Updated documentation to point new users to OpenRouter with minimax/minimax-m2.7
as the recommended starting model.

Changes:
- PROVIDERS.md: Updated Anthropic references, added minimax-m2.7 recommendation
- USER_GUIDE.md: Updated Anthropic row in cloud providers table
- FEATURES.md: Updated Claude models note to mention OpenRouter only

Author: fewtarius

docs/FEATURES.md

@@ -81,7 +81,7 @@ Each conversation stores its own UI state:
 - Access 100+ models from multiple providers through a single API
 - Automatic model routing and load balancing
 
-> **Note on Claude models:** SAM does not include a direct Anthropic provider. Claude-family models are available through GitHub Copilot (if your subscription includes them) and OpenRouter.
+> **Note on Claude models:** SAM does not include a direct Anthropic provider. Claude-family models are available through OpenRouter.
 
 ### Local Models
 

docs/PROVIDERS.md

@@ -15,7 +15,7 @@ SAM connects to AI providers to power its conversation and tool capabilities. Yo
 | Provider | Cost | Speed | Privacy | Best For |
 |----------|------|-------|---------|----------|
 | **OpenAI** | Pay-per-token | Fast | Cloud | General use, coding, creative writing |
-| **Anthropic** | - | - | - | No direct provider. Use GitHub Copilot or OpenRouter for Claude models. |
+| **Anthropic** | - | - | - | No direct provider. Use OpenRouter for Claude models. |
 | **GitHub Copilot** | Subscription | Fast | Cloud | Developers with existing Copilot subscription |
 | **DeepSeek** | Pay-per-token (low cost) | Fast | Cloud | Budget-friendly general use |
 | **Google Gemini** | Pay-per-token | Fast | Cloud | Google ecosystem, multimodal |
@@ -53,7 +53,6 @@ SAM connects to AI providers to power its conversation and tool capabilities. Yo
 
 SAM does not include a direct Anthropic provider. Claude-family models are available through:
 
-- **GitHub Copilot** - If your subscription tier includes Claude models
 - **OpenRouter** - Access Claude 3.5 Sonnet, Claude 4, and others through OpenRouter's unified gateway
 
 ---
@@ -162,6 +161,9 @@ SAM does not include a direct Anthropic provider. Claude-family models are avail
 - Automatic routing and load balancing
 - Pay-per-token across all models
 
+**Recommended Model for New Users:**
+- **minimax/minimax-m2.7** - Excellent all-around model with 1M token context, strong reasoning, and competitive pricing. A great starting point when using OpenRouter.
+
 ---
 
 ## Local Models

docs/USER_GUIDE.md

@@ -75,7 +75,7 @@ When you open SAM for the first time:
 
 1. **Set up an AI provider** - Open Settings (⌘,) and go to the AI Providers tab
 2. **Choose your provider:**
-   - **Cloud AI** - OpenAI, GitHub Copilot, DeepSeek, Google Gemini, MiniMax, or OpenRouter (Claude models available via GitHub Copilot and OpenRouter)
+   - **Cloud AI** - OpenAI, GitHub Copilot, DeepSeek, Google Gemini, MiniMax, or OpenRouter (Claude models available via OpenRouter)
    - **Local AI** - Download and run a model directly on your Mac (Apple Silicon recommended)
 3. **Enter your API key** (for cloud providers)
 4. **Start chatting** - Press ⌘N for a new conversation, type your message, and press Enter
@@ -128,7 +128,7 @@ SAM supports multiple AI providers. You can configure one or many and switch bet
 | Provider | Models | Notes |
 |----------|--------|-------|
 | **OpenAI** | GPT-4o, GPT-4, GPT-3.5, o1, o3 | Most popular, broad capabilities |
-| **Anthropic** | Via GitHub Copilot or OpenRouter | Claude models available through those providers |
+| **Anthropic** | Via OpenRouter | Claude models available through OpenRouter |
 | **GitHub Copilot** | GPT-4o, Claude 3.5, o1 | Requires GitHub Copilot subscription |
 | **DeepSeek** | DeepSeek Chat, DeepSeek Coder | Cost-effective, good for coding |
 | **Google Gemini** | Gemini 2.5 Pro/Flash, 2.0 Flash | Large context (up to 1M tokens) |