add svelte UI

ui/components/display/ListItem.svelte

@@ -0,0 +1,104 @@
+<script>
+  import { createEventDispatcher } from "svelte";
+
+  export let primary = "";
+  export let secondary = "";
+  export let active = false;
+  export let clickable = true;
+
+  const dispatch = createEventDispatcher();
+
+  function onClick() {
+    if (clickable) {
+      dispatch("click");
+    }
+  }
+</script>
+
+<!-- svelte-ignore a11y-no-static-element-interactions -->
+<div class="list-item" class:active class:clickable on:click={onClick}>
+  {#if $$slots.icon}
+    <div class="item-icon">
+      <slot name="icon" />
+    </div>
+  {/if}
+
+  <div class="item-content">
+    {#if $$slots.default}
+      <slot />
+    {:else}
+      <span class="item-primary">{primary}</span>
+      {#if secondary}
+        <span class="item-secondary">{secondary}</span>
+      {/if}
+    {/if}
+  </div>
+
+  {#if $$slots.action}
+    <div class="item-action">
+      <slot name="action" />
+    </div>
+  {/if}
+</div>
+
+<style>
+  .list-item {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    padding: 0.5rem 0.4rem 0.5rem 1rem;
+    margin: 0 0.2rem;
+    background: var(--background-primary);
+    border-radius: 0.5rem;
+    border: 1px solid transparent;
+    transition:
+      background 0.1s,
+      border-color 0.1s;
+  }
+
+  .list-item.clickable {
+    cursor: pointer;
+  }
+
+  .list-item.clickable:hover {
+    background: var(--background-modifier-hover);
+    border-color: var(--background-modifier-border);
+  }
+
+  .item-icon {
+    display: flex;
+    align-items: center;
+    flex-shrink: 0;
+    color: var(--text-muted);
+    opacity: 0.6;
+  }
+
+  .item-content {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 0.125rem;
+  }
+
+  .item-primary {
+    font-weight: 600;
+    font-size: 1rem;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .item-secondary {
+    font-size: 0.8125rem;
+    color: var(--text-muted);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .item-action {
+    flex-shrink: 0;
+    margin-left: auto;
+  }
+</style>