The bridge piece B and C (resolution source, reference images) both need:
Media bin picks have no way into a ComfyUI graph today. One node, media_id
in, IMAGE out, backed by core/media.py's existing store.
Also fixes a real .gitignore bug found along the way: a bare "media/"
pattern matched modules/media/ (this node's own source) as well as the
intended root-level user-data directory. Rooted both media/ and projects/.
