Country cards in the Where We Work sections show no description on hover

Problem/Motivation

The "Where We Work" country cards — both on the home page and on each country's own "See Other Countries" section — render a card with only the country name. No description shows, even though the design (Figma) specifies a short intro line that reveals on hover. The card component (sdc.vartheme_bs5_horizonaid.card-country, a separate SDC project) already has fully-built hover-reveal CSS/JS for exactly this effect — it had nothing to reveal because the Canvas content template never dropped a description into the card's content slot.

Steps to reproduce

1. Install the Horizon Aid site template (Varbase 11 + Horizon Aid recipe).
2. Visit the home page's "Where We Work" section, or any country's own page "See Other Countries" section.
3. Hover/focus a country card.
4. Observe: only the country title is present. No description text appears.

Proposed resolution

In config/canvas.content_template.node.country.card.yml, add a second component to the card's content slot: sdc.vartheme_bs5_horizonaid.text, bound to the Country node's field_description (label "Summary" — "A short introduction shown under the country title"), with text_color: text-white so it reads against the card's dark footer. Also add field.field.node.country.field_description to the config's own dependencies.config list (it becomes referenced). This matches the exact same binding pattern already used for this same field on canvas.content_template.node.country.full.yml.

AI-Generated: Yes

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User interface changes

• The "Where We Work" country card now shows a short description under the country title, revealed on hover/focus, matching the Figma design.

API changes

• N/A

Data model changes

• N/A

Release notes snippet

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