Add integrated Lora Loader MXD support and frontend. Introduces a new loraloader_mxd package (constants, logging, power node, prompt utils, server API routes, model info utils, server helpers, general utils, and userdata migration/IO). Adds many web frontend files for the MXD UI and registers the node in the top-level __init__.py. Updates README with merge/migration notes and adds userdata/ to .gitignore. Also includes minor comment/tuning change in maxedoutnodes.py and small updates to existing web/index.js and project metadata.