feat: build dashboard design system

src/lib/ui/components/FooterCell.svelte

@@ -0,0 +1,89 @@
+<script lang="ts">
+  import type { UiStatusItem } from "../types";
+
+  let { item }: { item: UiStatusItem } = $props();
+
+  let target = $derived(item.link?.external ? "_blank" : undefined);
+  let rel = $derived(item.link?.external ? "noreferrer" : undefined);
+</script>
+
+{#snippet cellContent()}
+  <span>{item.label}</span>
+  <strong>{item.value}</strong>
+{/snippet}
+
+{#if item.link}
+  <a
+    class="footer-cell"
+    data-severity={item.severity || "neutral"}
+    href={item.link.href}
+    target={target}
+    rel={rel}
+    aria-label={item.link.label}
+  >
+    {@render cellContent()}
+  </a>
+{:else}
+  <div class="footer-cell" data-severity={item.severity || "neutral"}>
+    {@render cellContent()}
+  </div>
+{/if}
+
+<style>
+  .footer-cell {
+    display: grid;
+    grid-template-columns: auto minmax(0, 1fr);
+    min-height: 2.65rem;
+    align-items: center;
+    background: rgba(2, 3, 2, 0.92);
+    color: inherit;
+    text-decoration: none;
+  }
+
+  span,
+  strong {
+    min-width: 0;
+    padding: var(--ui-space-2) var(--ui-space-3);
+    overflow-wrap: anywhere;
+    text-transform: uppercase;
+  }
+
+  span {
+    height: 100%;
+    border-right: var(--ui-border);
+    color: var(--ui-color-muted);
+    font-size: 0.68rem;
+    font-weight: 800;
+  }
+
+  strong {
+    color: var(--ui-color-text);
+    font-size: 0.76rem;
+  }
+
+  .footer-cell[data-severity="ok"] strong {
+    background: var(--ui-color-accent);
+    color: #060706;
+  }
+
+  .footer-cell[data-severity="warning"] strong {
+    color: var(--ui-color-warning);
+  }
+
+  .footer-cell[data-severity="danger"] strong {
+    color: var(--ui-color-danger);
+  }
+
+  .footer-cell[data-severity="stale"] strong,
+  .footer-cell[data-severity="unavailable"] strong {
+    color: var(--ui-color-stale);
+  }
+
+  .footer-cell[data-severity="loading"] strong {
+    color: var(--ui-color-accent);
+  }
+
+  .footer-cell:where(a):hover strong {
+    color: var(--ui-color-accent);
+  }
+</style>