feat: web UI chat render, panels, presence + analytics

frontend/src/lib/components/Location.svelte

@@ -0,0 +1,67 @@
+<script lang="ts">
+  import type { LocationView } from "$lib/api/types";
+
+  interface Props {
+    location: LocationView;
+  }
+
+  let { location }: Props = $props();
+
+  const hasCoords = $derived(
+    location.latitude !== null && location.longitude !== null
+  );
+  const mapUrl = $derived(
+    hasCoords
+      ? `https://www.openstreetmap.org/?mlat=${location.latitude}&mlon=${location.longitude}#map=16/${location.latitude}/${location.longitude}`
+      : null
+  );
+  const title = $derived(location.title ?? "Location");
+</script>
+
+<svelte:element
+  this={mapUrl ? "a" : "div"}
+  class="Location"
+  href={mapUrl}
+  target={mapUrl ? "_blank" : undefined}
+  rel={mapUrl ? "noopener" : undefined}
+>
+  <span class="pin">📍</span>
+  <div class="info">
+    <div class="title">{title}</div>
+    {#if location.address}
+      <div class="address">{location.address}</div>
+    {/if}
+    {#if hasCoords}
+      <div class="coords">{location.latitude}, {location.longitude}</div>
+    {/if}
+  </div>
+</svelte:element>
+
+<style lang="scss">
+  .Location {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+
+    min-width: 12rem;
+    margin-bottom: 0.25rem;
+
+    color: inherit;
+    text-decoration: none;
+  }
+
+  .pin {
+    font-size: 1.5rem;
+    line-height: 1;
+  }
+
+  .title {
+    font-weight: var(--font-weight-medium);
+  }
+
+  .address,
+  .coords {
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+  }
+</style>