docs: enhance documentation with comprehensive API, architecture, and installation guides

- Add detailed API documentation for core functions, SSE, and WebSocket APIs
- Create comprehensive architecture overview with system design diagrams
- Develop in-depth installation and quick start guides
- Improve troubleshooting documentation with advanced debugging techniques
- Update site navigation and markdown configuration

docs/getting-started/quickstart.md

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+---
+layout: default
+title: Quick Start
+parent: Getting Started
+nav_order: 2
+---
+
+# Quick Start Guide 🚀
+
+This guide will help you get started with MCP Server after installation. We'll cover basic usage, common commands, and simple integrations.
+
+## First Steps
+
+### 1. Verify Connection
+
+After installation, verify your MCP Server is running and connected to Home Assistant:
+
+```bash
+# Check server health
+curl http://localhost:3000/health
+
+# Verify Home Assistant connection
+curl http://localhost:3000/api/state
+```
+
+### 2. Basic Voice Commands
+
+Try these basic voice commands to test your setup:
+
+```bash
+# Example using curl for testing
+curl -X POST http://localhost:3000/api/command \
+  -H "Content-Type: application/json" \
+  -d '{"command": "Turn on the living room lights"}'
+```
+
+Common voice commands:
+- "Turn on/off [device name]"
+- "Set [device] to [value]"
+- "What's the temperature in [room]?"
+- "Is [device] on or off?"
+
+## Real-World Examples
+
+### 1. Smart Lighting Control
+
+```javascript
+// Browser example using fetch
+const response = await fetch('http://localhost:3000/api/command', {
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+  },
+  body: JSON.stringify({
+    command: 'Set living room lights to 50% brightness and warm white color'
+  })
+});
+```
+
+### 2. Real-Time Updates
+
+Subscribe to device state changes using Server-Sent Events (SSE):
+
+```javascript
+const eventSource = new EventSource('http://localhost:3000/subscribe_events?token=YOUR_TOKEN&domain=light');
+
+eventSource.onmessage = (event) => {
+    const data = JSON.parse(event.data);
+    console.log('Device state changed:', data);
+    // Update your UI here
+};
+```
+
+### 3. Scene Automation
+
+Create and trigger scenes for different activities:
+
+```javascript
+// Create a "Movie Night" scene
+const createScene = async () => {
+  await fetch('http://localhost:3000/api/scene', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({
+      name: 'Movie Night',
+      actions: [
+        { device: 'living_room_lights', action: 'dim', value: 20 },
+        { device: 'tv', action: 'on' },
+        { device: 'soundbar', action: 'on' }
+      ]
+    })
+  });
+};
+
+// Trigger the scene with voice command:
+// "Hey MCP, activate movie night scene"
+```
+
+## Integration Examples
+
+### 1. Web Dashboard Integration
+
+```javascript
+// React component example
+function SmartHomeControl() {
+    const [devices, setDevices] = useState([]);
+    
+    useEffect(() => {
+        // Subscribe to device updates
+        const events = new EventSource('http://localhost:3000/subscribe_events');
+        events.onmessage = (event) => {
+            const data = JSON.parse(event.data);
+            setDevices(currentDevices => 
+                currentDevices.map(device => 
+                    device.id === data.id ? {...device, ...data} : device
+                )
+            );
+        };
+        
+        return () => events.close();
+    }, []);
+
+    return (
+        <div className="dashboard">
+            {devices.map(device => (
+                <DeviceCard key={device.id} device={device} />
+            ))}
+        </div>
+    );
+}
+```
+
+### 2. Voice Assistant Integration
+
+```typescript
+// Example using speech-to-text with MCP
+async function handleVoiceCommand(audioBlob: Blob) {
+    // First, convert speech to text
+    const text = await speechToText(audioBlob);
+    
+    // Then send command to MCP
+    const response = await fetch('http://localhost:3000/api/command', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ command: text })
+    });
+    
+    return response.json();
+}
+```
+
+## Best Practices
+
+1. **Error Handling**
+   ```javascript
+   try {
+       const response = await fetch('http://localhost:3000/api/command', {
+           method: 'POST',
+           headers: {
+               'Content-Type': 'application/json',
+           },
+           body: JSON.stringify({ command: 'Turn on lights' })
+       });
+       
+       if (!response.ok) {
+           throw new Error(`HTTP error! status: ${response.status}`);
+       }
+       
+       const data = await response.json();
+   } catch (error) {
+       console.error('Error:', error);
+       // Handle error appropriately
+   }
+   ```
+
+2. **Connection Management**
+   ```javascript
+   class MCPConnection {
+       constructor() {
+           this.eventSource = null;
+           this.reconnectAttempts = 0;
+       }
+       
+       connect() {
+           this.eventSource = new EventSource('http://localhost:3000/subscribe_events');
+           this.eventSource.onerror = this.handleError.bind(this);
+       }
+       
+       handleError() {
+           if (this.reconnectAttempts < 3) {
+               setTimeout(() => {
+                   this.reconnectAttempts++;
+                   this.connect();
+               }, 1000 * this.reconnectAttempts);
+           }
+       }
+   }
+   ```
+
+## Next Steps
+
+- Explore the [API Documentation](../api/index.md) for advanced features
+- Learn about [SSE API](../api/sse.md) for real-time updates
+- Check out [Architecture](../architecture.md) for system design details
+- Read the [Contributing Guide](../contributing.md) to get involved
+
+## Troubleshooting
+
+If you encounter issues:
+- Verify your authentication token
+- Check server logs for errors
+- Ensure Home Assistant is accessible
+- Review the [Troubleshooting Guide](../troubleshooting.md)
+
+Need more help? Visit our [Support Resources](../index.md#support).