docs: add note about chatmode.md for DNext development

README.md

@@ -72,6 +72,8 @@ The server provides prompt templates for:
 - Bug localization and result explanation
 - Automated bug fixing and full resolution workflow
 
+### NOTE: There is a `chatmode.md` file personalized for DNext development that provides detailed instructions and rules on how to use the MCP server with chat-based interactions in IDEs like VSCode, Cursor, Windsurf and etc. Please refer to the [dnext-chatmode.md](https://github.com/pia-team/defect_solver_api/blob/main/.github/chatmodes/dnext-defect-solver.chatmode.md) for more information. 
+
 ## Configuration
 - API base URL and endpoints are configured in `utils/config.py` and via environment variables:
    - `DS_API_BASE_URL`, `DS_API_MULTIMODULE_ENDPOINT`, `DS_API_SINGLEMODULE_ENDPOINT`, `DS_API_SEARCHSPACE_ENDPOINT`