iter(g49): 新增 autoComplete 自动补全组件

packages/skin/ui/ui.css

@@ -2721,3 +2721,91 @@ button.ua-step-dot:hover {
     transition: none;
   }
 }
+.ua-autocomplete {
+  position: relative;
+  display: inline-block;
+  width: 100%;
+  max-width: 320px;
+}
+.ua-autocomplete-input {
+  width: 100%;
+  padding: 8px var(--ua-space-2);
+  font-size: var(--ua-font-size-sm);
+  color: var(--ua-color-text);
+  background: var(--ua-color-surface);
+  border: 1px solid var(--ua-color-border);
+  border-radius: var(--ua-radius-sm);
+  outline: none;
+  transition: border-color 0.15s ease, box-shadow 0.15s ease;
+}
+.ua-autocomplete-input:focus {
+  border-color: var(--ua-color-accent);
+  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ua-color-accent) 18%, transparent);
+}
+.ua-autocomplete-input:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+.ua-autocomplete-pop {
+  position: absolute;
+  z-index: 40;
+  left: 0;
+  right: 0;
+  display: none;
+  margin-top: 4px;
+  border: 1px solid var(--ua-color-border);
+  border-radius: var(--ua-radius-md);
+  background: var(--ua-color-surface);
+  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
+  overflow: hidden;
+}
+.ua-autocomplete-pop.ua-open {
+  display: block;
+  animation: ua-ac-in 0.15s ease both;
+}
+.ua-autocomplete-pop.is-flip {
+  margin-top: 0;
+  margin-bottom: 4px;
+}
+.ua-autocomplete-list {
+  max-height: 220px;
+  margin: 0;
+  padding: var(--ua-space-1);
+  overflow: auto;
+  list-style: none;
+}
+.ua-autocomplete-opt {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: var(--ua-space-1);
+  padding: 6px var(--ua-space-1);
+  border-radius: var(--ua-radius-sm);
+  font-size: var(--ua-font-size-sm);
+  color: var(--ua-color-text);
+  cursor: pointer;
+  transition: background 0.15s ease;
+}
+.ua-autocomplete-opt.is-active,
+.ua-autocomplete-opt:hover {
+  background: color-mix(in srgb, var(--ua-color-accent) 10%, transparent);
+}
+.ua-autocomplete-hint {
+  font-size: var(--ua-font-size-sm);
+  color: var(--ua-color-text-muted);
+}
+.ua-autocomplete-empty {
+  padding: var(--ua-space-2) 0;
+  text-align: center;
+  font-size: var(--ua-font-size-sm);
+  color: var(--ua-color-text-muted);
+}
+@keyframes ua-ac-in {
+  from { opacity: 0; transform: translateY(-4px); }
+  to   { opacity: 1; transform: translateY(0); }
+}
+@media (prefers-reduced-motion: reduce) {
+  .ua-autocomplete-pop.ua-open { animation: none; }
+  .ua-autocomplete-input,
+  .ua-autocomplete-opt { transition: none; }
+}