Update Copilot Chat changelog for 1.112

Author: ntrogh

CHANGELOG.md

@@ -1,3 +1,22 @@
+## 0.40 (2026-03-18)
+
+GitHub Copilot updates for [VS Code 1.112](https://code.visualstudio.com/updates/v1_112):
+
+- Message steering and queueing in Copilot CLI
+- Preview changes before delegating to Copilot CLI
+- Clickable file links in Copilot CLI terminal output
+- Permissions levels in Copilot CLI
+- Troubleshoot agent behavior with /troubleshoot (Preview)
+- Export and import agent debug logs (Preview)
+- Image and binary file support for agents
+- Automatic symbol references on paste in chat
+- Customizations discovery in parent repositories
+- Sandbox locally running MCP servers (Linux and macOS)
+- Improved UI for MCP Elicitation
+- Enable or disable plugins and MCP servers
+- Automatic plugin updates
+
+
 ## 0.39 (2026-03-09)
 
 GitHub Copilot updates for [VS Code 1.111](https://code.visualstudio.com/updates/v1_111):