Icon grid

{% comment %}
FEATURES / icon grid: the standard three-across capability grid.

WHAT YOUR VIEW MUST SUPPLY. This is one of the few sections that genuinely
needs context: a Django template cannot build a list of dicts inline. Pass

    features = [
        {"icon": "bell", "heading": "Automatic reminders",
         "body": "Chase on your schedule, not when you remember.",
         "url": "/features/reminders/",
         "cta_label": "Learn more"},
        {"icon": "calendar", "heading": "Late-payment prediction",
         "body": "Know which accounts slip before they do.",
         "eyebrow": "Coming soon", "pending": True},
        {"icon": "check", "heading": "Reconciliation",
         "body": "Payments matched to invoices automatically.",
         "badge": "Popular", "meta": "Included on every plan"},
    ]

`url` is optional per item. Give an item a url and the whole card becomes a
link; leave it off and the card stays a plain block rather than something that
looks clickable and goes nowhere. Optional slots (absent means omitted):
`eyebrow`, `meta`, `badge`, `cta_label` (visible footer text when `url` is
set), and `pending` (reduced emphasis).

`icon` must name an icon brickwork ships, or the render raises (deliberately:
a silently missing icon is worse than a loud failure).

columns takes 2, 3 or 4. The grid is mobile-first regardless: one column on
small screens, widening at the breakpoints the component owns.

variant takes "cards" (default, omitted) or "bordered" for the shared-rule
gap-less marketing grid. This example keeps the default.

States: see _feature_grid.html's own header for the full states contract
  (none of its own: a static grid, a linked card takes the standard link
  hover ink shift; pending cards are de-emphasised).
Accessibility: see _feature_grid.html; covered by axe.spec.mjs against
  sections-*.html, which renders this exact file with a real features
  list, both themes.
Responsive: see _feature_grid.html's own header for the exact breakpoint
  matrix (1 column below sm, 2 from sm to below lg regardless of columns,
  then the requested count from lg up); this example passes columns=3.
{% endcomment %}
{% include "brickwork_marketing/components/_feature_grid.html" with heading="Everything the chasing needs" lede="The parts of getting paid that nobody wants to do by hand." items=features columns=3 %}