feat: auto-discovery

README.md

@@ -71,6 +71,7 @@ The backend now includes automatic UDP discovery for SPORE nodes on the network.
 - `GET /api/discovery/nodes` - View all discovered nodes and current status
 - `POST /api/discovery/refresh` - Manually trigger discovery refresh
 - `POST /api/discovery/primary/:ip` - Manually set a specific node as primary
+- `POST /api/discovery/random-primary` - Randomly select a new primary node
 - `GET /api/health` - Health check including discovery status
 
 ### Testing Discovery
@@ -86,8 +87,21 @@ npm run test-discovery 192.168.1.100
 
 # Send multiple messages
 npm run test-discovery broadcast 5
+
+# Test random primary node selection
+npm run test-random-selection
 ```
 
+### Frontend Features
+
+The frontend now includes:
+
+- **Primary Node Display**: Shows the current primary node IP in the cluster header
+- **Random Selection**: Click the 🎲 button to randomly select a new primary node
+- **Real-time Updates**: Primary node display updates automatically every 10 seconds
+- **Visual Status Indicators**: Different colors and icons show node status
+- **Manual Refresh**: Users can manually trigger discovery updates
+
 ### Node Behavior
 
 - Nodes should send `CLUSTER_DISCOVERY` messages periodically (recommended: every 30-60 seconds)