docs: update

README.md

@@ -42,19 +42,19 @@ Zero-configuration web interface for monitoring and managing SPORE embedded syst
 - **API**: SPORE Embedded System API
 - **Design**: Glassmorphism, CSS Grid, Flexbox
 
-## UDP Auto Discovery
+## UDP Heartbeat Discovery
 
-The backend now includes automatic UDP discovery for SPORE nodes on the network. This eliminates the need for hardcoded IP addresses and provides a self-healing, scalable solution for managing SPORE clusters.
+The backend now includes automatic UDP heartbeat-based discovery for SPORE nodes on the network. This eliminates the need for hardcoded IP addresses and provides a self-healing, scalable solution for managing SPORE clusters.
 
 ### 🚀 How It Works
 
 1. **UDP Server**: The backend listens on port 4210 for UDP messages
 2. **Heartbeat Message**: Nodes send `CLUSTER_HEARTBEAT` messages to broadcast address `255.255.255.255:4210`
-3. **Auto Configuration**: When a discovery message is received, the source IP is automatically used to configure the SporeApiClient
+3. **Auto Configuration**: When a heartbeat message is received, the source IP is automatically used to configure the SporeApiClient
 4. **Dynamic Updates**: The system automatically switches to the most recently seen node as the primary connection
 5. **Health Monitoring**: Continuous monitoring of node availability with automatic failover
 
-### 📡 Discovery Protocol
+### 📡 Heartbeat Protocol
 
 - **Port**: 4210 (configurable via `UDP_PORT` constant)
 - **Message**: `CLUSTER_HEARTBEAT` (configurable via `HEARTBEAT_MESSAGE` constant)
@@ -71,7 +71,7 @@ npm start
 
 # The server will automatically:
 # - Start HTTP server on port 3001
-# - Start UDP discovery server on port 4210
+# - Start UDP heartbeat server on port 4210
 # - Wait for CLUSTER_HEARTBEAT messages
 ```