v2.1.52 Changelog: - add first-class Docker container folders with protected compose deployment folders - replace inline folder creation with modal dialogs on Docker and Proxy Hosts pages - add folder and item reordering for Docker containers and proxy hosts - persist ungrouped Docker container ordering and fix Docker reorder route handling - fix Docker container node-filter leakage when returning from container detail - move Docker folder creation into the main page header and align iconography with Proxy Hosts - fix list border polish and ungrouped section bottom-border rendering - fix folder drag previews and add optimistic folder reorder feedback for both pages