feat: 为下拉选择组件添加搜索过滤功能，支持拼音匹配

- 新增 search.ts 搜索工具，支持中文拼音（全拼/首字母）模糊匹配
- 新增 select-search-context.ts，通过 provide/inject 为 radix-vue Select 组件注入搜索能力
- MultiSelect、ModelMultiSelect 组件集成搜索框，选项超过阈值时自动显示
- select-content/select-item 组件支持搜索过滤与空状态提示
- StandaloneKeyFormDialog、UserFormDialog 中手写下拉框替换为复用 MultiSelect 组件
- 引入 pinyin-pro 依赖，按需懒加载

Closes #210

Co-authored-by: AoaoMH <[email protected]>

frontend/src/components/ui/select-item.vue

@@ -1,32 +1,100 @@
 <script setup lang="ts">
-import { SelectItem as SelectItemPrimitive, SelectItemIndicator, SelectItemText } from 'radix-vue'
+import {
+  SelectItem as SelectItemPrimitive,
+  SelectItemIndicator,
+  SelectItemText,
+} from 'radix-vue'
 import { Check } from 'lucide-vue-next'
 import { cn } from '@/lib/utils'
-import { computed } from 'vue'
+import {
+  computed,
+  getCurrentInstance,
+  inject,
+  onBeforeUnmount,
+  onMounted,
+  useSlots,
+  watch,
+} from 'vue'
+import { SELECT_SEARCH_CONTEXT_KEY } from './select-search-context'
 
 interface Props {
   class?: string
   value: string
   disabled?: boolean
+  textValue?: string
 }
 
 const props = defineProps<Props>()
+const slots = useSlots()
+const searchContext = inject(SELECT_SEARCH_CONTEXT_KEY, null)
+const instance = getCurrentInstance()
+const itemId = instance?.uid
+  ? `select-item-${instance.uid}`
+  : `select-item-${Math.random().toString(36).slice(2, 10)}`
 
+function extractText(node: unknown): string {
+  if (typeof node === 'string' || typeof node === 'number') {
+    return String(node)
+  }
+
+  if (Array.isArray(node)) {
+    return node.map(extractText).join(' ')
+  }
+
+  if (node && typeof node === 'object') {
+    const vnode = node as { children?: unknown }
+    return extractText(vnode.children)
+  }
+
+  return ''
+}
+
+const normalizedText = computed(() => {
+  const slotText = extractText(slots.default?.()).replace(/\s+/g, ' ').trim()
+  return (props.textValue ?? slotText ?? props.value).trim()
+})
+
+const isHidden = computed(
+  () => searchContext?.hiddenValues.value.has(props.value) ?? false,
+)
 const itemClass = computed(() =>
   cn(
     'relative flex w-full cursor-pointer select-none items-center rounded-lg py-1.5 pl-8 pr-2 text-sm outline-none',
     'data-[highlighted]:bg-accent focus:bg-accent text-foreground',
     'transition-colors data-[disabled]:pointer-events-none data-[disabled]:opacity-50',
-    props.class
-  )
+    isHidden.value && 'hidden',
+    props.class,
+  ),
 )
+
+onMounted(() => {
+  searchContext?.registerItem(itemId, {
+    value: props.value,
+    text: normalizedText.value,
+  })
+})
+
+watch(
+  () => [props.value, normalizedText.value] as const,
+  ([value, text]) => {
+    searchContext?.updateItem(itemId, {
+      value,
+      text,
+    })
+  },
+)
+
+onBeforeUnmount(() => {
+  searchContext?.unregisterItem(itemId)
+})
 </script>
 
 <template>
   <SelectItemPrimitive
     :class="itemClass"
     :value="value"
-    :disabled="disabled"
+    :disabled="disabled || isHidden"
+    :text-value="normalizedText"
   >
     <span class="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
       <SelectItemIndicator>