Add system control feature for remote shutdown/restart with timer support and UI integration

README.md

@@ -47,7 +47,30 @@ Access the interactive web dashboard at `http://localhost:5000` featuring:
 - **Process Management**: View top processes with CPU/memory percentages, terminate processes via API
 - **Smart Alerting**: Duration-based alerting to prevent false positives
 - **Telegram Bot Integration**: Real-time alerts via Telegram bot with customizable notifications
-- **System Control**: Remote shutdown/restart capabilities
+- **System Control**: Remote shutdown/restart capabilities with timer support (hidden feature)
+
+### 🔐 Hidden System Control Feature
+
+For security reasons, the system control feature is hidden by default. To access it:
+
+**Activation Methods:**
+1. **Triple-click** on the "Resource Monitor" title in the navigation bar
+2. **Keyboard shortcut**: `Ctrl + Shift + P`
+
+**Features:**
+- **Shutdown**: Graceful or forced system shutdown
+- **Restart**: System restart with optional force
+- **Timer Support**: Delay execution from 0 to 86400 seconds (24 hours)
+- **Safety Confirmations**: Multiple confirmation dialogs before execution
+
+**Usage:**
+1. Activate the system control button using one of the methods above
+2. Click the red "System" button that appears in the navigation
+3. Set optional timer (leave empty for immediate action)
+4. Choose shutdown or restart
+5. Confirm the action
+
+⚠️ **Warning**: Use this feature with extreme caution as it will shut down or restart the entire system.
 - **Health Monitoring**: Comprehensive health checks and uptime tracking
 - **Real-time Metrics**: CPU usage calculation and memory percentage tracking for processes