Add Developer MCP to v17 documentation navigation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Phil Whittaker

17/umbraco-cms/SUMMARY.md

@@ -380,6 +380,23 @@
   * [Additional preview environments support](reference/content-delivery-api/additional-preview-environments-support.md)
 * [Webhooks](reference/webhooks/README.md)
   * [Expanding Webhook Events](reference/webhooks/expanding-webhook-events.md)
+* [Developer MCP](reference/developer-mcp/README.md)
+  * [Key Concepts](reference/developer-mcp/concepts/README.md)
+    * [Model Context Protocol](reference/developer-mcp/concepts/model-context-protocol.md)
+    * [Context Engineering](reference/developer-mcp/concepts/context-enginerring.md)
+  * [Host Setup](reference/developer-mcp/host-setup/README.md)
+    * [Claude Desktop](reference/developer-mcp/host-setup/claude-desktop.md)
+    * [Claude Code](reference/developer-mcp/host-setup/claude-code.md)
+    * [Cursor](reference/developer-mcp/host-setup/cursor.md)
+    * [GitHub Copilot](reference/developer-mcp/host-setup/github-copilot.md)
+    * [OpenAI Codex](reference/developer-mcp/host-setup/openai-codex.md)
+  * [Best Practice](reference/developer-mcp/best-practice/README.md)
+    * [Example Instruction File](reference/developer-mcp/best-practice/example-instructions.md)
+    * [Creating Media](reference/developer-mcp/best-practice/creating-media.md)
+  * [Configuration](reference/developer-mcp/configuration.md)
+  * [Available Tools](reference/developer-mcp/available-tools.md)
+  * [Excluded Tools](reference/developer-mcp/excluded-tools.md)
+  * [Use Cases and Scenarios](reference/developer-mcp/scenarios.md)  
 * [API versioning and OpenAPI](reference/api-versioning-and-openapi.md)
 * [Searching](reference/searching/README.md)
   * [Examine](reference/searching/examine/README.md)