Add dc3_menu rows for the MCP Connection / MCP Client / MCP Tool settings pages (codes settingsMcpConnection/Client/Tool under the Integration group), matching the new frontend management views.
Reorganize dc3_menu (and mirrored dc3_resource) under Settings into Identity / Access / Model / Alarm / Event&Command / Audit / Integration / System, matching the frontend settingsNav.ts. Replaces the flat, out-of-order layout and retires the legacy Event/Command group containers.