Update Agent Wars to Native SDK 0.9.0

Author: marcusschiesser

examples/agent-wars/package.json

@@ -20,7 +20,7 @@
     "@ai-sdk/harness": "1.0.62",
     "@ai-sdk/harness-pi": "1.0.62",
     "@ai-sdk/sandbox-just-bash": "1.0.62",
-    "@native-sdk/core": "0.8.1",
+    "@native-sdk/core": "0.9.0",
     "ai": "7.0.56",
     "ws": "8.21.2",
     "zod": "4.4.3"