{% comment %} SIDEBAR ORGANISM — FIXED ON DESKTOP, OFF-CANVAS DRAWER ON MOBILE. Nav entries come from the DJANGO_FUNDAMENTALS_SIDEBAR_NAV setting via django_fundamentals.context_processors.design, so a project adds links in settings.py without overriding this template. Sections are optional: an entry with a `section` key starts a new labelled group. Expects a parent Alpine scope providing `sidebarOpen` (see layouts/app.html). {% endcomment %}