added sidebar

Author: humanagent

docs/docs/guides/advanced.md

@@ -402,3 +402,4 @@ debug("Detailed operation info: %O", {
 - [Autonomous Trading Guide](../advanced/autonomous-trading.md) for trading features
 - [Fine-tuning Guide](../advanced/fine-tuning.md) for model optimization
 - [Eliza in TEE](../advanced/eliza-in-tee.md) for TEE integration
+- [Secure messaging](../advanced/eliza-in-tee.md) for E2EE XMTP integration